AI Trajectory

null

{
  "EnableConfigs": [
    "NTFS_FS"
  ],
  "FocusSymbols": [
    "load_system_files",
    "check_windows_hibernation_status",
    "ntfs_fill_super"
  ],
  "KMSANReasoning": "The patch modifies NTFS mount logic in `load_system_files()` to temporarily set `SB_RDONLY` while checking Windows hibernation status (`check_windows_hibernation_status()`). This prevents `ntfs_error()` from prematurely triggering a panic when `errors=panic` mount option is used.\n\nThe only new local variable introduced is `bool temporary_ro = false;`, which is explicitly initialized. The changes only adjust superblock flags (`sb-\u003es_flags`) and control flow around error reporting and read-only fallback. There are no allocations of uninitialized memory, no structures copied to user space, and no alterations to data lengths, buffer boundaries, or uninitialized data access paths. Therefore, no uninitialized memory risks are introduced or exposed, and a dedicated KMSAN session is not needed.",
  "NeedsKMSAN": false,
  "Reasoning": "The patch modifies the mount-time superblock state and error-handling logic in NTFS (fs/ntfs/super.c) by temporarily marking the volume read-only while checking Windows hibernation status to avoid triggering errors=panic before the read-only fallback completes. This directly affects filesystem mount behavior and error state transitions, which are fully reachable and exerciseable by mounting NTFS filesystem images in standard virtualized test environments.",
  "WorthFuzzing": true
}

null

{
  "PatchDiff": "commit 2c814e3b3a0eafb7cd1998806d53c3307903cb39\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Tue Sep 22 07:28:17 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/fs/ntfs/super.c b/fs/ntfs/super.c\nindex 30481e5d5dd4e..f341b7754a5ce 100644\n--- a/fs/ntfs/super.c\n+++ b/fs/ntfs/super.c\n@@ -1404,6 +1404,7 @@ static bool load_system_files(struct ntfs_volume *vol)\n \tstruct ntfs_attr_search_ctx *ctx;\n \tstruct restart_page_header *rp;\n \tint err;\n+\tbool temporary_ro = false;\n \n \tntfs_debug(\"Entering.\");\n \t/* Get mft mirror inode compare the contents of $MFT and $MFTMirr. */\n@@ -1578,8 +1579,20 @@ static bool load_system_files(struct ntfs_volume *vol)\n \t * NVolErrors() without setting the dirty volume flag and mount\n \t * read-only.  This will prevent read-write remounting and it will also\n \t * prevent all writes.\n+\t *\n+\t * The check runs with the super block temporarily marked read-only, so\n+\t * that ntfs_error() calls issued internally by ntfs_lookup_inode_by_name()\n+\t * and ntfs_iget() cannot trigger errors=panic before the read-only\n+\t * fallback has run.  The super block is not published yet, so the flag\n+\t * is not visible elsewhere.\n \t */\n+\tif (!sb_rdonly(sb)) {\n+\t\tsb-\u003es_flags |= SB_RDONLY;\n+\t\ttemporary_ro = true;\n+\t}\n \terr = check_windows_hibernation_status(vol);\n+\tif (temporary_ro \u0026\u0026 !err \u0026\u0026 !NVolErrors(vol))\n+\t\tsb-\u003es_flags \u0026= ~SB_RDONLY;\n \tif (unlikely(err)) {\n \t\tstatic const char *es1a = \"Failed to determine if Windows is hibernated\";\n \t\tstatic const char *es1b = \"Windows is hibernated\";\n@@ -1587,12 +1600,27 @@ static bool load_system_files(struct ntfs_volume *vol)\n \t\tconst char *es1;\n \n \t\tes1 = err \u003c 0 ? es1a : es1b;\n-\t\t/* If a read-write mount, convert it to a read-only mount. */\n-\t\tif (!sb_rdonly(sb) \u0026\u0026 vol-\u003eon_errors == ON_ERRORS_REMOUNT_RO) {\n+\t\t/*\n+\t\t * A Windows hibernation image is not a filesystem error, so\n+\t\t * this is a safety interlock rather than something the\n+\t\t * errors= policy may downgrade: always convert a read-write\n+\t\t * mount to read-only.\n+\t\t */\n+\t\tif (!sb_rdonly(sb))\n \t\t\tsb-\u003es_flags |= SB_RDONLY;\n-\t\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\n-\t\t}\n+\n+\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\n \t\tNVolSetErrors(vol);\n+\t} else if (unlikely(temporary_ro \u0026\u0026 sb_rdonly(sb))) {\n+\t\tstatic const char *es1 = \"Errors were recorded during mount\";\n+\t\tstatic const char *es2 = \".  Run chkdsk.\";\n+\n+\t\t/*\n+\t\t * Errors were recorded during the check or earlier, e.g. when\n+\t\t * loading the LogFile.  Stay read-only, like ntfs_reconfigure()\n+\t\t * does for volumes with recorded errors.\n+\t\t */\n+\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\n \t}\n \n \t/* If (still) a read-write mount, empty the logfile. */\n"
}

core

null

{
  "EnableConfigs": [
    "NTFS_FS"
  ],
  "FocusSymbols": [
    "load_system_files",
    "check_windows_hibernation_status",
    "ntfs_fill_super"
  ],
  "Reasoning": "The patch modifies the mount-time superblock state and error-handling logic in NTFS (fs/ntfs/super.c) by temporarily marking the volume read-only while checking Windows hibernation status to avoid triggering errors=panic before the read-only fallback completes. This directly affects filesystem mount behavior and error state transitions, which are fully reachable and exerciseable by mounting NTFS filesystem images in standard virtualized test environments.",
  "WorthFuzzing": true
}

You are an expert Linux kernel maintainer and security engineer.
Your job is to review a provided patch series and evaluate whether it warrants fuzzing with syzkaller.

IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in
your workspace. Do NOT rely on internal assumptions. You must actively use your code access
tools to inspect the actual source code, callers, and surrounding context.

================================================================================
1. CORE TRIAGE PHILOSOPHY
================================================================================
The goal of patch fuzzing is to discover crashes, regressions, exposed latent bugs,
and newly triggered assertions introduced by the patch series.

- REACHABILITY IS THE PRIMARY GATE:
  Fuzzing can only discover bugs in code that can actually execute in standard virtualized
  environments (GCE or QEMU, utilizing software-emulated devices like USB gadgets, netdev, tun/tap).
  If the modified code is structurally unreachable (see Section 2), it MUST NOT be fuzzed,
  regardless of whether it adds assertions or complex logic.

- DO NOT BLINDLY TRUST "NO FUNCTIONAL CHANGE" (NFCI) OR "REFACTORING" CLAIMS:
  Patch authors routinely label changes as "cleanups", "refactorings", or state
  "No functional change intended". Do NOT take these claims at face value.
  Code refactorings that rearrange logic, introduce helper functions, or alter state management
  in core subsystems frequently introduce subtle semantic shifts or uncover latent kernel bugs.
  If reachable executable code is modified or refactored, it MUST be fuzzed.

- NEW OR MODIFIED ASSERTIONS IN REACHABLE CODE MUST BE FUZZED:
  When a patch introduces or modifies runtime checks or assertions (e.g., WARN_ON*, VM_WARN_ON*,
  BUG_ON*, lockdep_assert*) in reachable code paths, it enforces new or stricter invariants.
  Even if the author believes the invariant always holds, fuzzing is essential to verify whether
  an unusual sequence of operations can violate it.

================================================================================
2. WHEN TO RETURN WorthFuzzing=false (NEGATIVE CRITERIA)
================================================================================
Return WorthFuzzing=false ONLY IF all modified code falls strictly into one or more of these categories:

- Non-kernel and non-executable changes:
  * Modifications to Documentation/, comments, or spelling fixes.
  * User-space directories, self-tests, samples, or scripts (e.g., tools/, samples/, scripts/, usr/)
    that do not affect the compiled kernel image (vmlinux) or kernel modules.
  * Purely decorative logging (e.g., message strings in pr_err, printk, dev_info) or tracepoints
    that do not alter control flow or data structures.
  * Build system or Kconfig changes that do not alter compiled C logic.
- Structurally unreachable hardware:
  * Vendor-specific PCIe switches, SmartNICs, or GPU drivers (e.g., mlxsw, pds_core, qed,
    ionic, amdgpu) requiring physical ASIC/PCIe cards not emulated in standard QEMU.
- Unreachable execution paths:
  * Driver teardown callbacks (.remove, .shutdown, pci_unregister_driver) executed only during
    physical PCI hot-unplug or manual sysfs driver unbinding.
  * Code paths exclusive to architectures other than the target architecture.

================================================================================
3. WHEN TO RETURN WorthFuzzing=true (POSITIVE CRITERIA)
================================================================================
Return WorthFuzzing=true whenever the patch touches reachable executable code, including:
- Core Subsystems:
  * Any logic modifications in memory management (mm/), synchronization/locking (kernel/locking/),
    BPF, scheduler, core networking, VFS, or syscall handling.
- Refactorings and Code Cleanups:
  * Any restructuring of reachable data structures, helper abstractions, or algorithm flows.
- Runtime Assertions and Defensive Checks:
  * Any introduction or alteration of assertions (WARN_ON*, VM_WARN_ON*, BUG_ON*, etc.) in reachable paths.
- Reachable Drivers and Protocols:
  * Drivers accessible via virtual buses (virtio, USB gadget, loopback, netlink, binder, sockets, etc.).

================================================================================
4. EXTRACTING FocusSymbols (PREVENTING DILUTION)
================================================================================
When WorthFuzzing=true, you must extract specific kernel functions into FocusSymbols to guide the fuzzer:

- AVOID UBIQUITOUS LIFECYCLE HOT-PATHS:
  Do NOT list generic, ubiquitous functions called by almost every program in the corpus
  (including, but not limited to: general memory allocators and deallocators, page fault
  and trap handlers, or core synchronization primitives; this is not an exhaustive list).
  Listing ubiquitous functions causes the fuzzer to classify thousands of unrelated tests as "focused",
  which severely dilutes fuzzing effort away from the actual changes.

- TARGET SPECIFIC FEATURE LOGIC AND ENTRYPOINTS:
  List functions that specifically implement the logic being added or altered, or direct API entrypoints
  for the subsystem feature under review.

- HANDLING STATIC INLINE FUNCTIONS IN HEADERS (.h):
  Compiler-inlined static functions (such as static inlines in mm/*.h or include/linux/*.h) lack
  distinct symbol addresses in vmlinux and cannot be targeted directly by symbol coverage filters.
  If the changes are primarily in static inline helpers, identify non-static, feature-specific caller
  functions in .c files that exercise them (avoiding ubiquitous lifecycle wrappers).

================================================================================
5. IDENTIFYING EnableConfigs
================================================================================
Identify any specific CONFIG_ options required to properly compile and reach the modified code:
- Inspect Kconfig files and #ifdef guards; do not make assumptions.
- Check "depends on" lines in Kconfig to include any non-standard parent subsystem configs needed.
- Strip any 'CONFIG_' prefix (e.g., return "NET_IPV4" instead of "CONFIG_NET_IPV4").
Prefer calling several tools at the same time to save round-trips.


Use set-results tool to provide results of the analysis.
It must be called exactly once before the final reply.
Ignore results of this tool.

Target architecture: amd64

For your convenience, here is the diff of the changes:
commit 2c814e3b3a0eafb7cd1998806d53c3307903cb39
Author: syz-cluster <triage@syzkaller.com>
Date:   Tue Sep 22 07:28:17 2026 +0000

    syz-cluster: applied patch under review

diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index 30481e5d5dd4e..f341b7754a5ce 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -1404,6 +1404,7 @@ static bool load_system_files(struct ntfs_volume *vol)
 	struct ntfs_attr_search_ctx *ctx;
 	struct restart_page_header *rp;
 	int err;
+	bool temporary_ro = false;
 
 	ntfs_debug("Entering.");
 	/* Get mft mirror inode compare the contents of $MFT and $MFTMirr. */
@@ -1578,8 +1579,20 @@ static bool load_system_files(struct ntfs_volume *vol)
 	 * NVolErrors() without setting the dirty volume flag and mount
 	 * read-only.  This will prevent read-write remounting and it will also
 	 * prevent all writes.
+	 *
+	 * The check runs with the super block temporarily marked read-only, so
+	 * that ntfs_error() calls issued internally by ntfs_lookup_inode_by_name()
+	 * and ntfs_iget() cannot trigger errors=panic before the read-only
+	 * fallback has run.  The super block is not published yet, so the flag
+	 * is not visible elsewhere.
 	 */
+	if (!sb_rdonly(sb)) {
+		sb->s_flags |= SB_RDONLY;
+		temporary_ro = true;
+	}
 	err = check_windows_hibernation_status(vol);
+	if (temporary_ro && !err && !NVolErrors(vol))
+		sb->s_flags &= ~SB_RDONLY;
 	if (unlikely(err)) {
 		static const char *es1a = "Failed to determine if Windows is hibernated";
 		static const char *es1b = "Windows is hibernated";
@@ -1587,12 +1600,27 @@ static bool load_system_files(struct ntfs_volume *vol)
 		const char *es1;
 
 		es1 = err < 0 ? es1a : es1b;
-		/* If a read-write mount, convert it to a read-only mount. */
-		if (!sb_rdonly(sb) && vol->on_errors == ON_ERRORS_REMOUNT_RO) {
+		/*
+		 * A Windows hibernation image is not a filesystem error, so
+		 * this is a safety interlock rather than something the
+		 * errors= policy may downgrade: always convert a read-write
+		 * mount to read-only.
+		 */
+		if (!sb_rdonly(sb))
 			sb->s_flags |= SB_RDONLY;
-			ntfs_error(sb, "%s.  Mounting read-only%s", es1, es2);
-		}
+
+		ntfs_error(sb, "%s.  Mounting read-only%s", es1, es2);
 		NVolSetErrors(vol);
+	} else if (unlikely(temporary_ro && sb_rdonly(sb))) {
+		static const char *es1 = "Errors were recorded during mount";
+		static const char *es2 = ".  Run chkdsk.";
+
+		/*
+		 * Errors were recorded during the check or earlier, e.g. when
+		 * loading the LogFile.  Stay read-only, like ntfs_reconfigure()
+		 * does for volumes with recorded errors.
+		 */
+		ntfs_error(sb, "%s.  Mounting read-only%s", es1, es2);
 	}
 
 	/* If (still) a read-write mount, empty the logfile. */

gemini-3.8-flash

null

null

							input: 3628
							output: 33
							thoughts: 406
						

**Analyzing a Kernel Patch for Fuzzing Triage**

Okay, here's what I'm thinking. This looks like a straightforward kernel patch that's potentially up for fuzzing triage with syzkaller. The patch is in `fs/ntfs/super.c`, so it's probably filesystem-related. Given the location and the task at hand, I'd say the severity is benign – standard maintenance, code review, or fuzzing triage. No major red flags, so I'll just follow the standard triage instructions.

Let's dig into the patch itself. It's modifying the `load_system_files` function within `fs/ntfs/super.c`. Specifically, it appears to be adding a check related to read-only status within the context of loading system files.

Here’s the gist: The code now sets the superblock's `SB_RDONLY` flag temporarily if the filesystem is not already mounted as read-only. Then calls `check_windows_hibernation_status`. And, if there are no errors, the read-only flag is cleared, effectively making the filesystem writable again.

I'll probably use `read-file` or `grepper` to examine the surrounding code within `fs/ntfs/super.c`, focusing on the lines around 1400-1650 to get a better feel for the context and understand why this change was introduced. The goal is to fully grasp the change and understand what could go wrong.

{
  "Expression": "load_system_files",
  "PathPrefix": "fs/ntfs/super.c"
}

{
  "Output": "fs/ntfs/super.c=1386=static struct lock_class_key\n--\nfs/ntfs/super.c-1390-/*\nfs/ntfs/super.c:1391: * load_system_files - open the system files using normal functions\nfs/ntfs/super.c-1392- * @vol:\tntfs super block describing device whose system files to load\n--\nfs/ntfs/super.c-1398- */\nfs/ntfs/super.c:1399:static bool load_system_files(struct ntfs_volume *vol)\nfs/ntfs/super.c-1400-{\n--\nfs/ntfs/super.c=2229=static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc)\n--\nfs/ntfs/super.c-2399-\t */\nfs/ntfs/super.c:2400:\tif (!load_system_files(vol)) {\nfs/ntfs/super.c-2401-\t\tntfs_error(sb, \"Failed to load system files.\");\n--\nfs/ntfs/super.c-2435-\tntfs_error(sb, \"Failed to allocate root directory.\");\nfs/ntfs/super.c:2436:\t/* Clean up after the successful load_system_files() call from above. */\nfs/ntfs/super.c-2437-\tiput(vol-\u003evol_ino);\n"
}

gemini-3.8-flash

null

null

							input: 4768
							output: 37
							thoughts: 27
						

Here's a summary of my mental process:

**Diving into the NTFS Superblock Code**

Okay, time to get my hands dirty. I need to refresh my memory on how the NTFS superblock is handled within the Linux kernel. I'm going to jump into `fs/ntfs/super.c`, specifically around lines 1550 to 1640. That range usually covers the core structure definition and potentially some initialization or access routines for the superblock data. I'm expecting to find the key data structures here: things like the volume's attributes, sector sizes, cluster sizes, and possibly even the location of the MFT (Master File Table). I'll be looking to see how they've handled the various fields and whether there are any clever optimizations or potential gotchas I should be aware of, especially concerning error handling or compatibility issues with different NTFS versions. I will be looking for related functions, as well, as they are often near their data declarations. I'll focus on the data structures.

{
  "File": "fs/ntfs/super.c",
  "FirstLine": 1570,
  "LineCount": 70
}

{
  "Contents": "1570:\t\tif (IS_ERR(vol-\u003eroot_ino)) {\n1571:\t\t\tif (!IS_ERR(vol-\u003eroot_ino))\n1572:\t\t\t\tiput(vol-\u003eroot_ino);\n1573:\t\t\tntfs_error(sb, \"Failed to load root directory.\");\n1574:\t\t\tgoto iput_logfile_err_out;\n1575:\t\t}\n1576:\t\t/*\n1577:\t\t * Check if Windows is suspended to disk on the target volume.  If it\n1578:\t\t * is hibernated, we must not write *anything* to the disk so set\n1579:\t\t * NVolErrors() without setting the dirty volume flag and mount\n1580:\t\t * read-only.  This will prevent read-write remounting and it will also\n1581:\t\t * prevent all writes.\n1582:\t\t *\n1583:\t\t * The check runs with the super block temporarily marked read-only, so\n1584:\t\t * that ntfs_error() calls issued internally by ntfs_lookup_inode_by_name()\n1585:\t\t * and ntfs_iget() cannot trigger errors=panic before the read-only\n1586:\t\t * fallback has run.  The super block is not published yet, so the flag\n1587:\t\t * is not visible elsewhere.\n1588:\t\t */\n1589:\t\tif (!sb_rdonly(sb)) {\n1590:\t\t\tsb-\u003es_flags |= SB_RDONLY;\n1591:\t\t\ttemporary_ro = true;\n1592:\t\t}\n1593:\t\terr = check_windows_hibernation_status(vol);\n1594:\t\tif (temporary_ro \u0026\u0026 !err \u0026\u0026 !NVolErrors(vol))\n1595:\t\t\tsb-\u003es_flags \u0026= ~SB_RDONLY;\n1596:\t\tif (unlikely(err)) {\n1597:\t\t\tstatic const char *es1a = \"Failed to determine if Windows is hibernated\";\n1598:\t\t\tstatic const char *es1b = \"Windows is hibernated\";\n1599:\t\t\tstatic const char *es2 = \".  Run chkdsk.\";\n1600:\t\t\tconst char *es1;\n1601:\t\n1602:\t\t\tes1 = err \u003c 0 ? es1a : es1b;\n1603:\t\t\t/*\n1604:\t\t\t * A Windows hibernation image is not a filesystem error, so\n1605:\t\t\t * this is a safety interlock rather than something the\n1606:\t\t\t * errors= policy may downgrade: always convert a read-write\n1607:\t\t\t * mount to read-only.\n1608:\t\t\t */\n1609:\t\t\tif (!sb_rdonly(sb))\n1610:\t\t\t\tsb-\u003es_flags |= SB_RDONLY;\n1611:\t\n1612:\t\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\n1613:\t\t\tNVolSetErrors(vol);\n1614:\t\t} else if (unlikely(temporary_ro \u0026\u0026 sb_rdonly(sb))) {\n1615:\t\t\tstatic const char *es1 = \"Errors were recorded during mount\";\n1616:\t\t\tstatic const char *es2 = \".  Run chkdsk.\";\n1617:\t\n1618:\t\t\t/*\n1619:\t\t\t * Errors were recorded during the check or earlier, e.g. when\n1620:\t\t\t * loading the LogFile.  Stay read-only, like ntfs_reconfigure()\n1621:\t\t\t * does for volumes with recorded errors.\n1622:\t\t\t */\n1623:\t\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\n1624:\t\t}\n1625:\t\n1626:\t\t/* If (still) a read-write mount, empty the logfile. */\n1627:\t\tif (!sb_rdonly(sb) \u0026\u0026\n1628:\t\t    vol-\u003elogfile_ino \u0026\u0026 !ntfs_empty_logfile(vol-\u003elogfile_ino) \u0026\u0026\n1629:\t\t    vol-\u003eon_errors == ON_ERRORS_REMOUNT_RO) {\n1630:\t\t\tstatic const char *es1 = \"Failed to empty LogFile\";\n1631:\t\t\tstatic const char *es2 = \".  Mount in Windows.\";\n1632:\t\n1633:\t\t\t/* Convert to a read-only mount. */\n1634:\t\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\n1635:\t\t\tsb-\u003es_flags |= SB_RDONLY;\n1636:\t\t\tNVolSetErrors(vol);\n1637:\t\t}\n1638:\t\t/* If on NTFS versions before 3.0, we are done. */\n1639:\t\tif (unlikely(vol-\u003emajor_ver \u003c 3))\n"
}

gemini-3.8-flash

null

null

							input: 6300
							output: 28
							thoughts: 119
						

**NTFS Filesystem Fuzzing: A Quick Assessment**

Alright, let's break this down. First, we're talking about `fs/ntfs`, the classic NTFS filesystem driver within Linux, specifically the `CONFIG_NTFS_FS` setting. The real question is, can we realistically fuzz NTFS in typical virtualized setups like QEMU or Google Compute Engine?

The answer, as I see it, is yes. We can leverage standard methods: loop devices, syzkaller's ability to mount raw image bytes, `syz_mount_image`, or even the plain old `mount` syscall. That's good news. NTFS, like all filesystems, is a juicy target for syzkaller. The path is clear.

Now, let's take a quick look at the Kconfig file to pinpoint the exact config symbols we're dealing with. Knowing the specific settings will be key for tuning our fuzzing approach. We need to be precise.

{
  "Expression": "config NTFS_FS",
  "PathPrefix": "fs/ntfs"
}

{
  "Output": "fs/ntfs/Kconfig-1-# SPDX-License-Identifier: GPL-2.0-only\nfs/ntfs/Kconfig:2:config NTFS_FS\nfs/ntfs/Kconfig-3-\ttristate \"NTFS file system support\"\n--\nfs/ntfs/Kconfig-12-\nfs/ntfs/Kconfig:13:config NTFS_FS_WOF_COMPRESSION\nfs/ntfs/Kconfig-14-\tbool \"NTFS Windows system compression support\"\n--\nfs/ntfs/Kconfig=24=config NTFS_DEBUG\n--\nfs/ntfs/Kconfig-45-\nfs/ntfs/Kconfig:46:config NTFS_FS_POSIX_ACL\nfs/ntfs/Kconfig-47-\tbool \"NTFS POSIX Access Control Lists\"\n"
}

gemini-3.8-flash

null

null

							input: 6859
							output: 33
							thoughts: 13
						

Here's my attempt at summarizing the thought process, tailored for an expert audience:

**Diving into the NTFS Configuration**

Okay, time to get granular. To understand the current configuration for the NTFS filesystem within the kernel, I'm going to navigate directly to the source. Specifically, I need to examine the `fs/ntfs/Kconfig` file. This is the central configuration file that dictates which NTFS features are enabled, disabled, and configurable at compile time. I need to refresh my understanding of the current settings or diagnose a specific issue, so this is my first port of call. It contains the core settings that, together, define how the NTFS driver is built. I'm hoping to get a quick overview of what's supported by default, and identify any relevant dependencies or unusual configurations that might be causing a problem. This is where the core decisions are encoded.

{
  "File": "fs/ntfs/Kconfig",
  "FirstLine": 1,
  "LineCount": 40
}

{
  "Contents": "   1:\t# SPDX-License-Identifier: GPL-2.0-only\n   2:\tconfig NTFS_FS\n   3:\t\ttristate \"NTFS file system support\"\n   4:\t\tselect NLS\n   5:\t\tselect FS_IOMAP\n   6:\t\thelp\n   7:\t\t  NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.\n   8:\t\t  This allows you to mount devices formatted with the ntfs file system.\n   9:\t\n  10:\t\t  To compile this as a module, choose M here: the module will be called\n  11:\t\t  ntfs.\n  12:\t\n  13:\tconfig NTFS_FS_WOF_COMPRESSION\n  14:\t\tbool \"NTFS Windows system compression support\"\n  15:\t\tdepends on NTFS_FS\n  16:\t\thelp\n  17:\t\t  Enable read support for Windows system-compressed files.\n  18:\t\t  Windows more aggressively compresses system files such as binaries\n  19:\t\t  and DLLs using system compression. It is optimized for files that\n  20:\t\t  are rarely modified.\n  21:\t\t  Enabling this option builds the decompression support into the NTFS\n  22:\t\t  module.\n  23:\t\n  24:\tconfig NTFS_DEBUG\n  25:\t\tbool \"NTFS debugging support\"\n  26:\t\tdepends on NTFS_FS\n  27:\t\thelp\n  28:\t\t  If you are experiencing any problems with the NTFS file system, say\n  29:\t\t  Y here.  This will result in additional consistency checks to be\n  30:\t\t  performed by the driver as well as additional debugging messages to\n  31:\t\t  be written to the system log.  Note that debugging messages are\n  32:\t\t  disabled by default.  To enable them, supply the option debug_msgs=1\n  33:\t\t  at the kernel command line when booting the kernel or as an option\n  34:\t\t  to insmod when loading the ntfs module.  Once the driver is active,\n  35:\t\t  you can enable debugging messages by doing (as root):\n  36:\t\t  echo 1 \u003e /proc/sys/fs/ntfs-debug\n  37:\t\t  Replacing the \"1\" with \"0\" would disable debug messages.\n  38:\t\n  39:\t\t  If you leave debugging messages disabled, this results in little\n  40:\t\t  overhead, but enabling debug messages results in very significant\n"
}

gemini-3.8-flash

null

null

							input: 7698
							output: 34
							thoughts: 18
						

Okay, here's my take on those thoughts, framed as my own:

**Investigating NTFS Write Support**

Alright, I'm diving into this. My initial thought is to make sure we're clear on how NTFS write support is handled. I need to clarify whether it's implemented as a standalone feature, or if it is integrated into the other feature components. I need to know if write support is an independent element in the architecture, or if it is reliant on other aspects of the system.

{
  "File": "fs/ntfs/Kconfig",
  "FirstLine": 41,
  "LineCount": 40
}

{
  "Contents": "  41:\t\t  slowdown of the system.\n  42:\t\n  43:\t\t  When reporting bugs, please try to have available a full dump of\n  44:\t\t  debugging messages while the misbehaviour was occurring.\n  45:\t\n  46:\tconfig NTFS_FS_POSIX_ACL\n  47:\t\tbool \"NTFS POSIX Access Control Lists\"\n  48:\t\tdepends on NTFS_FS\n  49:\t\tselect FS_POSIX_ACL\n  50:\t\thelp\n  51:\t\t  POSIX Access Control Lists (ACLs) support additional access rights\n  52:\t\t  for users and groups beyond the standard owner/group/world scheme.\n  53:\t\n  54:\t\t  This option enables ACL support for ntfs, providing functional parity\n  55:\t\t  with ntfs3 drivier.\n  56:\t\n  57:\t\t  NOTE: this is linux only feature. Windows will ignore these ACLs.\n  58:\t\n  59:\t\t  If you don't know what Access Control Lists are, say N.\n"
}

gemini-3.8-flash

null

null

							input: 8125
							output: 27
							thoughts: 23
						

Here's my take on the thought process, as if it were my own:

**Investigating the NTFS Build Process**

Okay, so I need to figure out how `super.c` for the NTFS filesystem is compiled within the kernel build. Let's dig into the `fs/ntfs/Makefile`. That's the logical place to start – the Makefile should outline the build process for the entire subsystem. Hopefully, I can trace back the specific compilation command for `super.c` from there and get a clearer understanding of how it fits into the overall build process. It'll probably involve examining dependencies, compiler flags, and any object file linking. This should be a quick path to understanding where this specific module is in the build.

{
  "Expression": "super\\.o",
  "PathPrefix": "fs/ntfs"
}

{
  "Output": "fs/ntfs/Makefile=5=ntfs-y := aops.o attrib.o collate.o dir.o file.o index.o inode.o \\\nfs/ntfs/Makefile:6:\t  mft.o mst.o namei.o runlist.o super.o unistr.o attrlist.o ea.o \\\nfs/ntfs/Makefile-7-\t  upcase.o bitmap.o lcnalloc.o logfile.o reparse.o compress.o \\\n"
}

gemini-3.8-flash

null

null

							input: 8460
							output: 32
							thoughts: 873
						

**Analyzing the NTFS Hibernation Check Patch**

Okay, so `super.o` is definitely part of the `ntfs-y` module, which gets built when `CONFIG_NTFS_FS` is enabled, which I already knew. My first thought is to dig into the git history around commit `2c814e3b3a0eafb7cd1998806d53c3307903cb39`. Ideally, I'd use `git log`, but even without it, the diff and source code are enough to get a grasp on the change's impact. I want to figure out if this is fuzz-worthy.

The patch focuses on `load_system_files()`, specifically, how read-write and read-only mounts are handled during mount time, and, critically, `check_windows_hibernation_status()`. I need to understand what's changed and why.

Looking at the before/after, it's pretty clear. Before, they were checking hibernation *before* potentially setting the filesystem read-only. Now, they're setting the read-only flag (`sb->s_flags |= SB_RDONLY;`) *first* in the read-write case. A temporary read-only flag is set. Then, `check_windows_hibernation_status()` is called. If no error occurs *and* there are no existing errors on the volume, the read-only flag is *removed* (`sb->s_flags &= ~SB_RDONLY;`).

The crucial logic is around handling the case where Windows is hibernated. The patch aims to always enforce read-only mounting, even for read-write mounts, in that circumstance. It seems that they are now trying to ensure the volume is set read-only before any hibernation check is done.

So, it's checking for hibernation, and if found, forcing a read-only mount regardless of the existing mount options. They're explicitly trying to prevent potential writes to a hibernated volume. There's also some additional logic if an error is present, which keeps the system read-only if it started out read-only, or had errors recorded earlier.

This change seems like a safety measure. The change likely ensures that if hibernation status detection fails, it also mounts the drive in read-only mode.

My initial assessment is that this area is definitely worth fuzzing. The change in the order of operations, and the conditions under which the read-only flag is set and unset, introduce new potential states and race conditions. I need to focus my fuzzing around the hibernation check itself, and how it interacts with the read-write/read-only mount state. I need to be careful with how errors during the initial read-only state affect subsequent operations, especially if the volume should, in theory, switch back to read-write. I need to pay close attention to the `NVolErrors` and `sb_rdonly` interactions.

{
  "Expression": "check_windows_hibernation_status",
  "PathPrefix": "fs/ntfs"
}

{
  "Output": "fs/ntfs/super.c=1090=static int load_and_check_logfile(struct ntfs_volume *vol,\n--\nfs/ntfs/super.c-1114-/*\nfs/ntfs/super.c:1115: * check_windows_hibernation_status - check if Windows is suspended on a volume\nfs/ntfs/super.c-1116- * @vol:\tntfs super block of device to check\n--\nfs/ntfs/super.c-1137- */\nfs/ntfs/super.c:1138:static int check_windows_hibernation_status(struct ntfs_volume *vol)\nfs/ntfs/super.c-1139-{\n--\nfs/ntfs/super.c=1399=static bool load_system_files(struct ntfs_volume *vol)\n--\nfs/ntfs/super.c-1592-\t}\nfs/ntfs/super.c:1593:\terr = check_windows_hibernation_status(vol);\nfs/ntfs/super.c-1594-\tif (temporary_ro \u0026\u0026 !err \u0026\u0026 !NVolErrors(vol))\n"
}

gemini-3.8-flash

null

null

							input: 10301
							output: 37
							thoughts: 25
						

Here's my take on those thoughts:

**Analyzing `check_windows_hibernation_status` in `fs/ntfs/super.c`**

Okay, time to dig into the `check_windows_hibernation_status` function within the NTFS superblock code. Let's see what we're working with here. I need to understand how this handles the Windows hibernation state. Specifically, I'm expecting this function deals with detecting and potentially managing the NTFS file system in a hybrid-boot scenario, and the nuances of resuming from hibernation. I'm going to look for how it interacts with the boot sector, master file table (MFT), and any special attributes that might mark a hibernation file or partition. I anticipate it will be checking for specific magic numbers, flags, or data structures that indicate whether a hibernation image is present and if it's safe to mount the volume. Depending on the design, it might also handle things like dirty flags or journals related to potential corruption if a hibernation image is partially written or if there was an unclean shutdown. I'm also going to pay close attention to the potential race conditions and locking within the function, to make sure there's no way to read or change the hibernation state on another thread. It's time to dive in and get a grip on the details.

{
  "File": "fs/ntfs/super.c",
  "FirstLine": 1135,
  "LineCount": 50
}

{
  "Contents": "1135:\t * Return 0 if Windows is not hibernated on the volume, \u003e0 if Windows is\n1136:\t * hibernated on the volume, and -errno on error.\n1137:\t */\n1138:\tstatic int check_windows_hibernation_status(struct ntfs_volume *vol)\n1139:\t{\n1140:\t\tstatic const __le16 hiberfil[13] = { cpu_to_le16('h'),\n1141:\t\t\t\tcpu_to_le16('i'), cpu_to_le16('b'),\n1142:\t\t\t\tcpu_to_le16('e'), cpu_to_le16('r'),\n1143:\t\t\t\tcpu_to_le16('f'), cpu_to_le16('i'),\n1144:\t\t\t\tcpu_to_le16('l'), cpu_to_le16('.'),\n1145:\t\t\t\tcpu_to_le16('s'), cpu_to_le16('y'),\n1146:\t\t\t\tcpu_to_le16('s'), 0 };\n1147:\t\tu64 mref;\n1148:\t\tstruct inode *vi;\n1149:\t\tstruct folio *folio;\n1150:\t\tu32 *kaddr, *kend, *start_addr = NULL;\n1151:\t\tstruct ntfs_name *name = NULL;\n1152:\t\tint ret = 1;\n1153:\t\n1154:\t\tntfs_debug(\"Entering.\");\n1155:\t\t/*\n1156:\t\t * Find the inode number for the hibernation file by looking up the\n1157:\t\t * filename hiberfil.sys in the root directory.\n1158:\t\t */\n1159:\t\tinode_lock(vol-\u003eroot_ino);\n1160:\t\tmref = ntfs_lookup_inode_by_name(NTFS_I(vol-\u003eroot_ino), hiberfil, 12,\n1161:\t\t\t\t\u0026name);\n1162:\t\tinode_unlock(vol-\u003eroot_ino);\n1163:\t\tkfree(name);\n1164:\t\tif (IS_ERR_MREF(mref)) {\n1165:\t\t\tret = MREF_ERR(mref);\n1166:\t\t\t/* If the file does not exist, Windows is not hibernated. */\n1167:\t\t\tif (ret == -ENOENT) {\n1168:\t\t\t\tntfs_debug(\"hiberfil.sys not present.  Windows is not hibernated on the volume.\");\n1169:\t\t\t\treturn 0;\n1170:\t\t\t}\n1171:\t\t\t/* A real error occurred. */\n1172:\t\t\tntfs_error(vol-\u003esb, \"Failed to find inode number for hiberfil.sys.\");\n1173:\t\t\treturn ret;\n1174:\t\t}\n1175:\t\t/* Get the inode. */\n1176:\t\tvi = ntfs_iget(vol-\u003esb, MREF(mref));\n1177:\t\tif (IS_ERR(vi)) {\n1178:\t\t\tif (!IS_ERR(vi))\n1179:\t\t\t\tiput(vi);\n1180:\t\t\tntfs_error(vol-\u003esb, \"Failed to load hiberfil.sys.\");\n1181:\t\t\treturn IS_ERR(vi) ? PTR_ERR(vi) : -EIO;\n1182:\t\t}\n1183:\t\tif (unlikely(i_size_read(vi) \u003c NTFS_HIBERFIL_HEADER_SIZE)) {\n1184:\t\t\tntfs_debug(\"hiberfil.sys is smaller than 4kiB (0x%llx).  Windows is hibernated on the volume.  This is not the system volume.\",\n"
}

gemini-3.8-flash

null

null

							input: 11598
							output: 29
							thoughts: 44
						

**Diving Deep into the NTFS Error Handling**

Okay, so I'm staring at this `ntfs_error(vol->sb, ...)` call. Gotta understand what's *really* going on behind the scenes. My first instinct is to see how this `ntfs_error` function itself is defined. The error handling is crucial, particularly within the NTFS filesystem. Let's get right to the source code. I know it's a standard path, so I need to go to `fs/ntfs`, that's where the implementation likely lives. Let's get digging.

no matches

{
  "Expression": "void ntfs_error",
  "PathPrefix": "fs/ntfs"
}

{
  "error": "no matches"
}

gemini-3.8-flash

null

null

							input: 11811
							output: 29
							thoughts: 12
						

Here's my attempt at summarizing the thought process, tailored for an expert audience:

**Investigating `ntfs_error`**

Alright, let's get down to brass tacks. I'm hitting a wall, and the key seems to be this `ntfs_error` identifier. My initial approach is to nail down a precise definition. We all know how vague error messages can be; without a firm grasp of what's being flagged, I'm just spinning my wheels. I need to understand, at its core, what conditions or states warrant an `ntfs_error`. Is it a generic catch-all, or is there some granularity? Is this something inherent to the file system format, or the drivers? I'm already thinking about where I should look for this definition, whether it is in the documentation for the ntfs driver, the file system itself, or perhaps somewhere else. I am assuming I will discover whether this error has well-defined implications. Knowing precisely what `ntfs_error` encompasses will immediately dictate the direction of my next steps. This is a critical first move; I can't chase ghosts.

{
  "Expression": "ntfs_error\\(",
  "PathPrefix": "fs/ntfs"
}

{
  "Output": "\nFull output is too long, showing 500 out of 2543 lines.\nUse more precise expression if possible.\n\nfs/ntfs/aops.c=133=static sector_t ntfs_bmap(struct address_space *mapping, sector_t block)\n--\nfs/ntfs/aops.c-147-\t    NInoWofCompressed(ni) || NInoMstProtected(ni)) {\nfs/ntfs/aops.c:148:\t\tntfs_error(vol-\u003esb, \"BMAP does not make sense for %s attributes, returning 0.\",\nfs/ntfs/aops.c-149-\t\t\t\t(ni-\u003etype != AT_DATA) ? \"non-data\" :\n--\nfs/ntfs/aops.c-191-\t\tcase LCN_ENOMEM:\nfs/ntfs/aops.c:192:\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/aops.c-193-\t\t\t\t\"Not enough memory to complete mapping for inode 0x%llx. Returning 0.\",\n--\nfs/ntfs/aops.c-196-\t\tdefault:\nfs/ntfs/aops.c:197:\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/aops.c-198-\t\t\t\t\"Failed to complete mapping for inode 0x%llx.  Run chkdsk. Returning 0.\",\n--\nfs/ntfs/aops.c-219-\t\tif (unlikely(block != lcn)) {\nfs/ntfs/aops.c:220:\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/aops.c-221-\t\t\t\t\"Physical block 0x%llx is too large to be returned, returning 0.\",\n--\nfs/ntfs/attrib.c=377=s64 ntfs_attr_vcn_to_lcn_nolock(struct ntfs_inode *ni, const s64 vcn,\n--\nfs/ntfs/attrib.c-434-\tif (lcn != LCN_ENOENT)\nfs/ntfs/attrib.c:435:\t\tntfs_error(ni-\u003evol-\u003esb, \"Failed with error code %lli.\",\nfs/ntfs/attrib.c-436-\t\t\t\t(long long)lcn);\n--\nfs/ntfs/attrib.c=527=struct runlist_element *ntfs_attr_find_vcn_nolock(struct ntfs_inode *ni, const s64 vcn,\n--\nfs/ntfs/attrib.c-579-\tif (err != -ENOENT)\nfs/ntfs/attrib.c:580:\t\tntfs_error(ni-\u003evol-\u003esb, \"Failed with error code %i.\", err);\nfs/ntfs/attrib.c-581-\treturn ERR_PTR(err);\n--\nfs/ntfs/attrib.c=734=static bool ntfs_attr_value_is_valid(struct ntfs_volume *vol,\n--\nfs/ntfs/attrib.c-772-corrupt:\nfs/ntfs/attrib.c:773:\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-774-\t\t   \"Corrupt %#x attribute in MFT record %llu\\n\",\n--\nfs/ntfs/attrib.c=836=static int ntfs_attr_find(const __le32 type, const __le16 *name,\n--\nfs/ntfs/attrib.c-881-\t\t\t    attr_len - name_offset \u003c name_size) {\nfs/ntfs/attrib.c:882:\t\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-883-\t\t\t\t\t   \"Corrupt attribute name in MFT record %llu\\n\",\n--\nfs/ntfs/attrib.c-964-\t}\nfs/ntfs/attrib.c:965:\tntfs_error(vol-\u003esb, \"mft %#llx, type %#x is corrupt. Run chkdsk.\",\nfs/ntfs/attrib.c-966-\t\t   (long long)ctx-\u003entfs_ino-\u003emft_no, le32_to_cpu(type));\n--\nfs/ntfs/attrib.c=979=char *ntfs_attr_name_get(const struct ntfs_volume *vol, const __le16 *uname,\n--\nfs/ntfs/attrib.c-986-\tif (name_len \u003c 0) {\nfs/ntfs/attrib.c:987:\t\tntfs_error(vol-\u003esb, \"ntfs_ucstonls error\");\nfs/ntfs/attrib.c-988-\t\t/* This function when returns -1, memory for name might\n--\nfs/ntfs/attrib.c=1063=int load_attribute_list(struct ntfs_inode *base_ni, u8 *al_start, const s64 size)\n--\nfs/ntfs/attrib.c-1071-\tif (IS_ERR(attr_vi)) {\nfs/ntfs/attrib.c:1072:\t\tntfs_error(base_ni-\u003evol-\u003esb,\nfs/ntfs/attrib.c-1073-\t\t\t   \"Failed to open an inode for Attribute list, mft = %llu\",\n--\nfs/ntfs/attrib.c-1079-\t\tiput(attr_vi);\nfs/ntfs/attrib.c:1080:\t\tntfs_error(base_ni-\u003evol-\u003esb,\nfs/ntfs/attrib.c-1081-\t\t\t   \"Failed to read attribute list, mft = %llu\",\n--\nfs/ntfs/attrib.c-1087-\tif (!ntfs_attr_list_is_valid(al_start, size)) {\nfs/ntfs/attrib.c:1088:\t\tntfs_error(base_ni-\u003evol-\u003esb, \"Corrupt attribute list, mft = %llu\",\nfs/ntfs/attrib.c-1089-\t\t\t   base_ni-\u003emft_no);\n--\nfs/ntfs/attrib.c=1145=static int ntfs_external_attr_find(const __le32 type,\n--\nfs/ntfs/attrib.c-1262-\t\t\t/* Not found?!? Absurd! */\nfs/ntfs/attrib.c:1263:\t\t\tntfs_error(ctx-\u003entfs_ino-\u003evol-\u003esb, \"Attribute list wasn't found\");\nfs/ntfs/attrib.c-1264-\t\t\treturn -EIO;\n--\nfs/ntfs/attrib.c-1359-\t\t\tif (MSEQNO_LE(al_entry-\u003emft_reference) != ni-\u003eseq_no) {\nfs/ntfs/attrib.c:1360:\t\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-1361-\t\t\t\t\t\"Found stale mft reference in attribute list of base inode 0x%llx.%s\",\n--\nfs/ntfs/attrib.c-1381-\t\t\t\tif (IS_ERR(ctx-\u003emrec)) {\nfs/ntfs/attrib.c:1382:\t\t\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-1383-\t\t\t\t\t\t\t\"Failed to map extent mft record 0x%lx of base inode 0x%llx.%s\",\n--\nfs/ntfs/attrib.c-1496-\nfs/ntfs/attrib.c:1497:\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-1498-\t\t\t\"Base inode 0x%llx contains corrupt attribute, mft %#llx, type %#x. %s\",\n--\nfs/ntfs/attrib.c=1938=int ntfs_attr_make_non_resident(struct ntfs_inode *ni, const u32 data_size)\n--\nfs/ntfs/attrib.c-2125-\tif (unlikely(err)) {\nfs/ntfs/attrib.c:2126:\t\tntfs_error(vol-\u003esb, \"Failed to build mapping pairs, error code %i.\",\nfs/ntfs/attrib.c-2127-\t\t\t\terr);\n--\nfs/ntfs/attrib.c-2204-\t\t\tattr_size = arec_size - mp_ofs;\nfs/ntfs/attrib.c:2205:\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-2206-\t\t\t\t\"Failed to undo partial resident to non-resident attribute conversion.  Truncating inode 0x%llx, attribute type 0x%x from %i bytes to %i bytes to maintain metadata consistenc...\n--\nfs/ntfs/attrib.c-2236-\t\tif (ntfs_cluster_free_from_rl(vol, rl) \u003c 0) {\nfs/ntfs/attrib.c:2237:\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-2238-\t\t\t\t\"Failed to release allocated cluster(s) in error code path.  Run chkdsk to recover the lost cluster(s).\");\n--\nfs/ntfs/attrib.c=2274=int ntfs_attr_set(struct ntfs_inode *ni, s64 ofs, s64 cnt, const u8 val)\n--\nfs/ntfs/attrib.c-2288-\t\t\tret = PTR_ERR(folio);\nfs/ntfs/attrib.c:2289:\t\t\tntfs_error(VFS_I(ni)-\u003ei_sb, \"Failed to read a page %lu for attr %#x: %ld\",\nfs/ntfs/attrib.c-2290-\t\t\t\t   index, ni-\u003etype, PTR_ERR(folio));\n--\nfs/ntfs/attrib.c=2395=int ntfs_resident_attr_record_add(struct ntfs_inode *ni, __le32 type,\n--\nfs/ntfs/attrib.c-2424-\tif (!ctx) {\nfs/ntfs/attrib.c:2425:\t\tntfs_error(ni-\u003evol-\u003esb, \"%s: Failed to get search context\",\nfs/ntfs/attrib.c-2426-\t\t\t\t__func__);\n--\nfs/ntfs/attrib.c=2789=int ntfs_attr_add(struct ntfs_inode *ni, __le32 type,\n--\nfs/ntfs/attrib.c-2822-\t\tif (err != -EPERM) {\nfs/ntfs/attrib.c:2823:\t\t\tntfs_error(sb, \"ntfs_attr_can_be_non_resident failed\");\nfs/ntfs/attrib.c-2824-\t\t\tgoto err_out;\n--\nfs/ntfs/attrib.c-2827-\t\tif (!val) {\nfs/ntfs/attrib.c:2828:\t\t\tntfs_error(sb,\nfs/ntfs/attrib.c-2829-\t\t\t\t\"val is mandatory for always resident attributes\");\n--\nfs/ntfs/attrib.c-2832-\t\tif (size \u003e ni-\u003evol-\u003emft_record_size) {\nfs/ntfs/attrib.c:2833:\t\t\tntfs_error(sb, \"Attribute is too big\");\nfs/ntfs/attrib.c-2834-\t\t\treturn -ERANGE;\n--\nfs/ntfs/attrib.c-2847-\t\tif (err != -EPERM) {\nfs/ntfs/attrib.c:2848:\t\t\tntfs_error(sb, \"ntfs_attr_can_be_resident failed\");\nfs/ntfs/attrib.c-2849-\t\t\tgoto err_out;\n--\nfs/ntfs/attrib.c-2885-\tif (err) {\nfs/ntfs/attrib.c:2886:\t\tntfs_error(sb, \"Failed to attach all extents to inode\");\nfs/ntfs/attrib.c-2887-\t\tgoto err_out;\n--\nfs/ntfs/attrib.c-2911-\t\tif (err) {\nfs/ntfs/attrib.c:2912:\t\t\tntfs_error(sb, \"Failed to add attribute list\");\nfs/ntfs/attrib.c-2913-\t\t\tgoto err_out;\n--\nfs/ntfs/attrib.c-2921-\tif (err) {\nfs/ntfs/attrib.c:2922:\t\tntfs_error(sb, \"Failed to allocate extent record\");\nfs/ntfs/attrib.c-2923-\t\tgoto err_out;\n--\nfs/ntfs/attrib.c-2935-\t\t\terr = offset;\nfs/ntfs/attrib.c:2936:\t\t\tntfs_error(sb, \"Failed to add resident attribute\");\nfs/ntfs/attrib.c-2937-\t\t\tgoto free_err_out;\n--\nfs/ntfs/attrib.c-2947-\t\terr = offset;\nfs/ntfs/attrib.c:2948:\t\tntfs_error(sb, \"Failed to add non resident attribute\");\nfs/ntfs/attrib.c-2949-\t\tgoto free_err_out;\n--\nfs/ntfs/attrib.c-2959-\t\terr = PTR_ERR(attr_vi);\nfs/ntfs/attrib.c:2960:\t\tntfs_error(sb, \"Failed to open just added attribute\");\nfs/ntfs/attrib.c-2961-\t\tgoto rm_attr_err_out;\n--\nfs/ntfs/attrib.c-2968-\t\terr = -EIO;\nfs/ntfs/attrib.c:2969:\t\tntfs_error(sb, \"Failed to initialize just added attribute\");\nfs/ntfs/attrib.c-2970-\t\tif (ntfs_attr_rm(attr_ni))\nfs/ntfs/attrib.c:2971:\t\t\tntfs_error(sb, \"Failed to remove just added attribute\");\nfs/ntfs/attrib.c-2972-\t\tiput(attr_vi);\n--\nfs/ntfs/attrib.c-2983-\t\t\t\t\t(struct attr_record *)((u8 *)ni_mrec + offset), 0))\nfs/ntfs/attrib.c:2984:\t\t\tntfs_error(sb, \"Failed to remove just added attribute #2\");\nfs/ntfs/attrib.c-2985-\t\tunmap_mft_record(attr_ni);\n--\nfs/ntfs/attrib.c-2999-\t\t\tif (ntfs_mft_record_free(attr_ni-\u003evol, attr_ni))\nfs/ntfs/attrib.c:3000:\t\t\t\tntfs_error(sb, \"Failed to free MFT record\");\nfs/ntfs/attrib.c-3001-\t\t\tif (attr_ni-\u003enr_extents \u003c 0)\n--\nfs/ntfs/attrib.c=3272=int ntfs_attr_map_whole_runlist(struct ntfs_inode *ni)\n--\nfs/ntfs/attrib.c-3296-\tif (!ctx) {\nfs/ntfs/attrib.c:3297:\t\tntfs_error(sb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-3298-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-3333-\t\t\t\terr = -EIO;\nfs/ntfs/attrib.c:3334:\t\t\t\tntfs_error(sb,\nfs/ntfs/attrib.c-3335-\t\t\t\t\t\"First extent of inode %llu attribute has non-zero lowest_vcn\",\n--\nfs/ntfs/attrib.c-3356-\t\t\terr = -EIO;\nfs/ntfs/attrib.c:3357:\t\t\tntfs_error(sb, \"Inode %llu has corrupt attribute list\",\nfs/ntfs/attrib.c-3358-\t\t\t\t\t(unsigned long long)ni-\u003emft_no);\n--\nfs/ntfs/attrib.c-3362-\tif (!a) {\nfs/ntfs/attrib.c:3363:\t\tntfs_error(sb, \"Couldn't find attribute for runlist mapping\");\nfs/ntfs/attrib.c-3364-\t\tgoto err_out;\n--\nfs/ntfs/attrib.c-3367-\t\terr = -EIO;\nfs/ntfs/attrib.c:3368:\t\tntfs_error(sb,\nfs/ntfs/attrib.c-3369-\t\t\t\"Failed to load full runlist: inode: %llu highest_vcn: 0x%llx last_vcn: 0x%llx\",\n--\nfs/ntfs/attrib.c=3392=int ntfs_attr_record_move_to(struct ntfs_attr_search_ctx *ctx, struct ntfs_inode *ni)\n--\nfs/ntfs/attrib.c-3422-\tif (!nctx) {\nfs/ntfs/attrib.c:3423:\t\tntfs_error(sb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-3424-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c=3482=int ntfs_attr_record_move_away(struct ntfs_attr_search_ctx *ctx, int extra)\n--\nfs/ntfs/attrib.c-3502-\tif (!NInoAttrList(base_ni)) {\nfs/ntfs/attrib.c:3503:\t\tntfs_error(sb, \"Inode %llu has no attrlist\",\nfs/ntfs/attrib.c-3504-\t\t\t\t(unsigned long long)base_ni-\u003emft_no);\n--\nfs/ntfs/attrib.c-3509-\tif (err) {\nfs/ntfs/attrib.c:3510:\t\tntfs_error(sb, \"Couldn't attach extents, inode=%llu\",\nfs/ntfs/attrib.c-3511-\t\t\t(unsigned long long)base_ni-\u003emft_no);\n--\nfs/ntfs/attrib.c-3523-\t\tif (IS_ERR(m)) {\nfs/ntfs/attrib.c:3524:\t\t\tntfs_error(sb, \"Can not map mft record for mft_no %lld\",\nfs/ntfs/attrib.c-3525-\t\t\t\t\t(unsigned long long)ni-\u003emft_no);\n--\nfs/ntfs/attrib.c-3554-\tif (err) {\nfs/ntfs/attrib.c:3555:\t\tntfs_error(sb, \"Couldn't allocate MFT record, err : %d\", err);\nfs/ntfs/attrib.c-3556-\t\treturn err;\n--\nfs/ntfs/attrib.c-3561-\tif (err) {\nfs/ntfs/attrib.c:3562:\t\tntfs_error(sb, \"Couldn't move attribute to MFT record\");\nfs/ntfs/attrib.c-3563-\t\tif (ntfs_mft_record_free(base_ni-\u003evol, ni))\nfs/ntfs/attrib.c:3564:\t\t\tntfs_error(sb, \"Couldn't free empty MFT record\");\nfs/ntfs/attrib.c-3565-\t\telse\n--\nfs/ntfs/attrib.c=3576=static int ntfs_attr_update_meta(struct attr_record *a, struct ntfs_inode *ni,\n--\nfs/ntfs/attrib.c-3621-\t\t\tif (err) {\nfs/ntfs/attrib.c:3622:\t\t\t\tntfs_error(sb, \"Failed to move attribute\");\nfs/ntfs/attrib.c-3623-\t\t\t\tgoto out;\n--\nfs/ntfs/attrib.c-3634-\t\t\terr = -EIO;\nfs/ntfs/attrib.c:3635:\t\t\tntfs_error(sb, \"Mapping pairs space is 0\");\nfs/ntfs/attrib.c-3636-\t\t\tgoto out;\n--\nfs/ntfs/attrib.c=3715=int ntfs_attr_update_mapping_pairs(struct ntfs_inode *ni, s64 from_vcn)\n--\nfs/ntfs/attrib.c-3737-\tif (!NInoNonResident(ni)) {\nfs/ntfs/attrib.c:3738:\t\tntfs_error(sb, \"%s: resident attribute\", __func__);\nfs/ntfs/attrib.c-3739-\t\treturn -EINVAL;\n--\nfs/ntfs/attrib.c-3748-\tif (!ctx) {\nfs/ntfs/attrib.c:3749:\t\tntfs_error(sb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-3750-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-3784-\t\t\t\terr = -EIO;\nfs/ntfs/attrib.c:3785:\t\t\t\tntfs_error(sb, \"Bad runlist\");\nfs/ntfs/attrib.c-3786-\t\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3834-\t\t\terr = mp_size;\nfs/ntfs/attrib.c:3835:\t\t\tntfs_error(sb, \"%s: get MP size failed\", __func__);\nfs/ntfs/attrib.c-3836-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3860-\t\t\t\tif (ntfs_inode_add_attrlist(base_ni)) {\nfs/ntfs/attrib.c:3861:\t\t\t\t\tntfs_error(sb, \"Can not add attrlist\");\nfs/ntfs/attrib.c-3862-\t\t\t\t\treturn -EIO;\n--\nfs/ntfs/attrib.c-3880-\t\t\t\terr = -EIO;\nfs/ntfs/attrib.c:3881:\t\t\t\tntfs_error(sb, \"Failed to resize attribute\");\nfs/ntfs/attrib.c-3882-\t\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3906-\t\tif (!finished_build \u0026\u0026 err != -ENOSPC) {\nfs/ntfs/attrib.c:3907:\t\t\tntfs_error(sb, \"Failed to build mapping pairs\");\nfs/ntfs/attrib.c-3908-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3916-\tif (err \u0026\u0026 err != -ENOENT) {\nfs/ntfs/attrib.c:3917:\t\tntfs_error(sb, \"%s: Attribute lookup failed\", __func__);\nfs/ntfs/attrib.c-3918-\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3939-\t\t} else {\nfs/ntfs/attrib.c:3940:\t\t\tntfs_error(sb, \"Failed to update sizes in base extent\\n\");\nfs/ntfs/attrib.c-3941-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3956-\t\t\tif (err) {\nfs/ntfs/attrib.c:3957:\t\t\t\tntfs_error(sb, \"Could not remove unused attr\");\nfs/ntfs/attrib.c-3958-\t\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3962-\t\tif (err \u0026\u0026 err != -ENOENT) {\nfs/ntfs/attrib.c:3963:\t\t\tntfs_error(sb, \"%s: Attr lookup failed\", __func__);\nfs/ntfs/attrib.c-3964-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3980-\t\tif (err) {\nfs/ntfs/attrib.c:3981:\t\t\tntfs_error(sb, \"Failed to allocate extent record\");\nfs/ntfs/attrib.c-3982-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3987-\t\tif (IS_ERR(m)) {\nfs/ntfs/attrib.c:3988:\t\t\tntfs_error(sb, \"Could not map new MFT record\");\nfs/ntfs/attrib.c-3989-\t\t\tif (ntfs_mft_record_free(ni-\u003evol, ext_ni))\nfs/ntfs/attrib.c:3990:\t\t\t\tntfs_error(sb, \"Could not free MFT record\");\nfs/ntfs/attrib.c-3991-\t\t\tntfs_inode_close(ext_ni);\n--\nfs/ntfs/attrib.c-4013-\t\t\terr = mp_size;\nfs/ntfs/attrib.c:4014:\t\t\tntfs_error(sb, \"%s: get mp size failed\", __func__);\nfs/ntfs/attrib.c-4015-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-4023-\t\tif (err \u003c 0) {\nfs/ntfs/attrib.c:4024:\t\t\tntfs_error(sb, \"Could not add attribute extent\");\nfs/ntfs/attrib.c-4025-\t\t\tunmap_mft_record(ext_ni);\nfs/ntfs/attrib.c-4026-\t\t\tif (ntfs_mft_record_free(ni-\u003evol, ext_ni))\nfs/ntfs/attrib.c:4027:\t\t\t\tntfs_error(sb, \"Could not free MFT record\");\nfs/ntfs/attrib.c-4028-\t\t\tntfs_inode_close(ext_ni);\n--\nfs/ntfs/attrib.c-4037-\t\tif (err \u003c 0 \u0026\u0026 err != -ENOSPC) {\nfs/ntfs/attrib.c:4038:\t\t\tntfs_error(sb, \"Failed to build MP\");\nfs/ntfs/attrib.c-4039-\t\t\tunmap_mft_record(ext_ni);\nfs/ntfs/attrib.c-4040-\t\t\tif (ntfs_mft_record_free(ni-\u003evol, ext_ni))\nfs/ntfs/attrib.c:4041:\t\t\t\tntfs_error(sb, \"Couldn't free MFT record\");\nfs/ntfs/attrib.c-4042-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c=4071=static int ntfs_attr_make_resident(struct ntfs_inode *ni, struct ntfs_attr_search_ctx *ctx)\n--\nfs/ntfs/attrib.c-4137-\t\t */\nfs/ntfs/attrib.c:4138:\t\tntfs_error(ctx-\u003entfs_ino-\u003evol-\u003esb, \"BUG! Failed to resize attribute record. \");\nfs/ntfs/attrib.c-4139-\t\treturn -EIO;\n--\nfs/ntfs/attrib.c-4166-\tif (err) {\nfs/ntfs/attrib.c:4167:\t\tntfs_error(sb, \"Eeek! Failed to release allocated clusters\");\nfs/ntfs/attrib.c-4168-\t\tntfs_debug(\"Ignoring error and leaving behind wasted clusters.\\n\");\n--\nfs/ntfs/attrib.c=4197=static int ntfs_non_resident_attr_shrink(struct ntfs_inode *ni, const s64 newsize)\n--\nfs/ntfs/attrib.c-4259-\t\tif (!ctx) {\nfs/ntfs/attrib.c:4260:\t\t\tntfs_error(vol-\u003esb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-4261-\t\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-4280-\t\t\tni-\u003erunlist.rl = NULL;\nfs/ntfs/attrib.c:4281:\t\t\tntfs_error(vol-\u003esb, \"Eeek! Run list truncation failed.\\n\");\nfs/ntfs/attrib.c-4282-\t\t\treturn -EIO;\n--\nfs/ntfs/attrib.c-4307-\tif (!ctx) {\nfs/ntfs/attrib.c:4308:\t\tntfs_error(vol-\u003esb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-4309-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-4347-\t\t\tif (err != -EPERM)\nfs/ntfs/attrib.c:4348:\t\t\t\tntfs_error(ni-\u003evol-\u003esb,\nfs/ntfs/attrib.c-4349-\t\t\t\t\t\"Failed to make attribute resident. Leaving as is...\\n\");\n--\nfs/ntfs/attrib.c=4374=static int ntfs_non_resident_attr_expand(struct ntfs_inode *ni, const s64 newsize,\n--\nfs/ntfs/attrib.c-4404-\tif (err\t\u003c 0) {\nfs/ntfs/attrib.c:4405:\t\tntfs_error(sb, \"%s: bounds check failed\", __func__);\nfs/ntfs/attrib.c-4406-\t\treturn err;\n--\nfs/ntfs/attrib.c-4429-\t\tif (err) {\nfs/ntfs/attrib.c:4430:\t\t\tntfs_error(sb, \"ntfs_attr_map_whole_runlist failed\");\nfs/ntfs/attrib.c-4431-\t\t\treturn err;\n--\nfs/ntfs/attrib.c-4535-\t\t\t\t/* Failed, free just allocated clusters. */\nfs/ntfs/attrib.c:4536:\t\t\t\tntfs_error(sb, \"Run list merge failed\");\nfs/ntfs/attrib.c-4537-\t\t\t\tntfs_cluster_free_from_rl(vol, rl);\n--\nfs/ntfs/attrib.c-4603-\t\tni-\u003erunlist.rl = NULL;\nfs/ntfs/attrib.c:4604:\t\tntfs_error(sb, \"Couldn't truncate runlist. Rollback failed\");\nfs/ntfs/attrib.c-4605-\t} else {\n--\nfs/ntfs/attrib.c-4611-\t\tif (ntfs_attr_update_mapping_pairs(ni, 0))\nfs/ntfs/attrib.c:4612:\t\t\tntfs_error(sb, \"Failed to restore old mapping pairs\");\nfs/ntfs/attrib.c-4613-\t\tif (need_lock)\n--\nfs/ntfs/attrib.c=4640=static int ntfs_resident_attr_resize(struct ntfs_inode *attr_ni, const s64 newsize,\n--\nfs/ntfs/attrib.c-4661-\tif (!ctx) {\nfs/ntfs/attrib.c:4662:\t\tntfs_error(sb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-4663-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-4668-\tif (err) {\nfs/ntfs/attrib.c:4669:\t\tntfs_error(sb, \"ntfs_attr_lookup failed\");\nfs/ntfs/attrib.c-4670-\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-4719-\t} else if (err != -ENOSPC \u0026\u0026 err != -EPERM) {\nfs/ntfs/attrib.c:4720:\t\tntfs_error(sb, \"Failed to make attribute non-resident\");\nfs/ntfs/attrib.c-4721-\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-4755-\t\tif (IS_ERR(tvi)) {\nfs/ntfs/attrib.c:4756:\t\t\tntfs_error(sb, \"Couldn't open attribute\");\nfs/ntfs/attrib.c-4757-\t\t\tcontinue;\n--\nfs/ntfs/attrib.c-4772-\tif (err != -ENOENT) {\nfs/ntfs/attrib.c:4773:\t\tntfs_error(sb, \"%s: Attribute lookup failed 1\", __func__);\nfs/ntfs/attrib.c-4774-\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-4793-\t\t\terr = -ENOSPC;\nfs/ntfs/attrib.c:4794:\t\t\tntfs_error(sb,\nfs/ntfs/attrib.c-4795-\t\t\t\t\"Couldn't free space in the MFT record to make attribute list non resident\");\n--\nfs/ntfs/attrib.c-4813-\tif (err) {\nfs/ntfs/attrib.c:4814:\t\tntfs_error(sb, \"%s: Attribute lookup failed 2\", __func__);\nfs/ntfs/attrib.c-4815-\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-4840-\tif (err) {\nfs/ntfs/attrib.c:4841:\t\tntfs_error(sb, \"Couldn't allocate MFT record\");\nfs/ntfs/attrib.c-4842-\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-4848-\tif (err) {\nfs/ntfs/attrib.c:4849:\t\tntfs_error(sb, \"Couldn't move attribute to new MFT record\");\nfs/ntfs/attrib.c-4850-\t\terr = -ENOMEM;\n--\nfs/ntfs/attrib.c=5015=int ntfs_attr_map_cluster(struct ntfs_inode *ni, s64 vcn_start, s64 *lcn_start,\n--\nfs/ntfs/attrib.c-5035-\tif (!ctx) {\nfs/ntfs/attrib.c:5036:\t\tntfs_error(vol-\u003esb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-5037-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-5042-\tif (err) {\nfs/ntfs/attrib.c:5043:\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-5044-\t\t\t   \"ntfs_attr_lookup failed, ntfs inode(mft_no : %llu) type : 0x%x, err : %d\",\n--\nfs/ntfs/attrib.c-5050-\tif (IS_ERR(rl)) {\nfs/ntfs/attrib.c:5051:\t\tntfs_error(vol-\u003esb, \"Failed to find run after mapping runlist.\");\nfs/ntfs/attrib.c-5052-\t\terr = PTR_ERR(rl);\n--\nfs/ntfs/attrib.c-5120-\tif (IS_ERR(rl)) {\nfs/ntfs/attrib.c:5121:\t\tntfs_error(vol-\u003esb, \"Failed to merge runlists\");\nfs/ntfs/attrib.c-5122-\t\terr = PTR_ERR(rl);\nfs/ntfs/attrib.c-5123-\t\tif (ntfs_cluster_free_from_rl(vol, rlc))\nfs/ntfs/attrib.c:5124:\t\t\tntfs_error(vol-\u003esb, \"Failed to free hot clusters.\");\nfs/ntfs/attrib.c-5125-\t\tkvfree(rlc);\n--\nfs/ntfs/attrib.c-5146-\t\t\tif (err2 \u003c 0)\nfs/ntfs/attrib.c:5147:\t\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-5148-\t\t\t\t\t   \"Failed to free cluster allocation. Leaving inconstant metadata.\\n\");\n--\nfs/ntfs/attrib.c=5172=int ntfs_attr_rm(struct ntfs_inode *ni)\n--\nfs/ntfs/attrib.c-5195-\t\tif (!ctx) {\nfs/ntfs/attrib.c:5196:\t\t\tntfs_error(sb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-5197-\t\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-5201-\t\tif (ret \u003c 0)\nfs/ntfs/attrib.c:5202:\t\t\tntfs_error(sb,\nfs/ntfs/attrib.c-5203-\t\t\t\t\"Failed to free cluster allocation. Leaving inconstant metadata.\\n\");\n--\nfs/ntfs/attrib.c-5209-\tif (!ctx) {\nfs/ntfs/attrib.c:5210:\t\tntfs_error(sb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-5211-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-5216-\t\tif (err) {\nfs/ntfs/attrib.c:5217:\t\t\tntfs_error(sb,\nfs/ntfs/attrib.c-5218-\t\t\t\t\"Failed to remove attribute extent. Leaving inconstant metadata.\\n\");\n--\nfs/ntfs/attrib.c-5224-\tif (err != -ENOENT) {\nfs/ntfs/attrib.c:5225:\t\tntfs_error(sb, \"Attribute lookup failed. Probably leaving inconstant metadata.\\n\");\nfs/ntfs/attrib.c-5226-\t\tret = err;\n--\nfs/ntfs/attrib.c=5232=int ntfs_attr_exist(struct ntfs_inode *ni, const __le32 type, __le16 *name,\n--\nfs/ntfs/attrib.c-5241-\tif (!ctx) {\nfs/ntfs/attrib.c:5242:\t\tntfs_error(ni-\u003evol-\u003esb, \"%s: Failed to get search context\",\nfs/ntfs/attrib.c-5243-\t\t\t\t__func__);\n--\nfs/ntfs/attrib.c=5254=int ntfs_attr_remove(struct ntfs_inode *ni, const __le32 type, __le16 *name,\n--\nfs/ntfs/attrib.c-5268-\t\terr = PTR_ERR(attr_vi);\nfs/ntfs/attrib.c:5269:\t\tntfs_error(ni-\u003evol-\u003esb, \"Failed to open attribute 0x%02x of inode 0x%llx\",\nfs/ntfs/attrib.c-5270-\t\t\t\ttype, (unsigned long long)ni-\u003emft_no);\n--\nfs/ntfs/attrib.c-5276-\tif (err)\nfs/ntfs/attrib.c:5277:\t\tntfs_error(ni-\u003evol-\u003esb, \"Failed to remove attribute 0x%02x of inode 0x%llx\",\nfs/ntfs/attrib.c-5278-\t\t\t\ttype, (unsigned long long)ni-\u003emft_no);\n--\nfs/ntfs/attrib.c=5301=void *ntfs_attr_readall(struct ntfs_inode *ni, const __le32 type,\n--\nfs/ntfs/attrib.c-5322-\t\tbmp_ni-\u003edata_size \u003e ((ni-\u003evol-\u003enr_clusters + 7) \u003e\u003e 3))) {\nfs/ntfs/attrib.c:5323:\t\tntfs_error(sb, \"Invalid attribute data size\");\nfs/ntfs/attrib.c-5324-\t\tret = ERR_PTR(-EIO);\n--\nfs/ntfs/attrib.c-5336-\tif (size != bmp_ni-\u003edata_size) {\nfs/ntfs/attrib.c:5337:\t\tntfs_error(sb, \"ntfs_attr_pread failed\");\nfs/ntfs/attrib.c-5338-\t\tret = size \u003c 0 ? ERR_PTR((int)size) : ERR_PTR(-EIO);\n--\nfs/ntfs/attrib.c=5431=int ntfs_non_resident_attr_collapse_range(struct ntfs_inode *ni, s64 start_vcn, s64 len)\n--\nfs/ntfs/attrib.c-5515-\tif (ret)\nfs/ntfs/attrib.c:5516:\t\tntfs_error(vol-\u003esb, \"Freeing of clusters failed\");\nfs/ntfs/attrib.c-5517-out_ctx:\n--\nfs/ntfs/attrib.c=5526=int ntfs_non_resident_attr_punch_hole(struct ntfs_inode *ni, s64 start_vcn, s64 len)\n--\nfs/ntfs/attrib.c-5575-\tif (ret)\nfs/ntfs/attrib.c:5576:\t\tntfs_error(vol-\u003esb, \"Freeing of clusters failed\");\nfs/ntfs/attrib.c-5577-\n--\nfs/ntfs/attrib.c=5583=int ntfs_attr_fallocate(struct ntfs_inode *ni, loff_t start, loff_t byte_len, bool keep_size)\n--\nfs/ntfs/attrib.c-5744-\t\tif (err)\nfs/ntfs/attrib.c:5745:\t\t\tntfs_error(ni-\u003evol-\u003esb, \"Updating mapping pairs failed\");\nfs/ntfs/attrib.c-5746-\t\telse\n--\nfs/ntfs/attrlist.c=54=int ntfs_attrlist_update(struct ntfs_inode *base_ni)\n--\nfs/ntfs/attrlist.c-80-\t\t\tiput(attr_vi);\nfs/ntfs/attrlist.c:81:\t\t\tntfs_error(base_ni-\u003evol-\u003esb,\nfs/ntfs/attrlist.c-82-\t\t\t\t\t\"Failed to truncate attribute list of inode %#llx\",\n--\nfs/ntfs/attrlist.c-87-\t\tiput(attr_vi);\nfs/ntfs/attrlist.c:88:\t\tntfs_error(base_ni-\u003evol-\u003esb,\nfs/ntfs/attrlist.c-89-\t\t\t   \"Failed to truncate attribute list of inode %#llx\",\n--\nfs/ntfs/attrlist.c-102-\t\tiput(attr_vi);\nfs/ntfs/attrlist.c:103:\t\tntfs_error(base_ni-\u003evol-\u003esb,\nfs/ntfs/attrlist.c-104-\t\t\t   \"Failed to write attribute list of inode %#llx\",\n--\nfs/ntfs/attrlist.c=121=int ntfs_attrlist_entry_add(struct ntfs_inode *ni, struct attr_record *attr)\n--\nfs/ntfs/attrlist.c-167-\t\terr = -ENOMEM;\nfs/ntfs/attrlist.c:168:\t\tntfs_error(ni-\u003evol-\u003esb, \"Failed to get search context\");\nfs/ntfs/attrlist.c-169-\t\tgoto err_out;\n\n"
}

gemini-3.8-flash

null

null

							input: 22950
							output: 34
							thoughts: 26
						

Okay, here's my take on those thoughts, tailored for an expert audience:

**Hunting Down That NTFS Error**

Right, let's get down to brass tacks. I need to pinpoint the definition of this `ntfs_error` thing. It's probably buried deep in the guts of the NTFS filesystem code, so my first instinct is to use `grepper`. Knowing the kernel code structure like the back of my hand, I'll aim it directly at the likely suspect directory: `fs/ntfs/`. That should give me a solid starting point for where this elusive error code is defined and used. Let's see what `grepper` unearths. Hopefully, it's not too deeply nested in some macro jungle. I'm hoping I can easily see how it's used so I know what the context is for debugging.

no matches

{
  "Expression": "ntfs_error\\(const struct super_block",
  "PathPrefix": "fs/ntfs"
}

{
  "error": "no matches"
}

gemini-3.8-flash

null

null

							input: 23205
							output: 32
							thoughts: 21
						

Here's my thought process, as if I were working on this:

**Locating the NTFS Error Handler**

Okay, so I need to track down the prototype or definition of the `ntfs_error` function. My instinct is that this will reside within the `fs/ntfs/` directory, which makes perfect sense. That's the logical place to find the low-level NTFS file system code. I'll need to open that up and start digging. I'm going to be looking for a function declaration or definition. I might also find it defined in a header file included by those source files. Let's get to it.

{
  "Expression": "ntfs_error",
  "PathPrefix": "fs/ntfs/super.c"
}

{
  "Output": "fs/ntfs/super.c=123=static int ntfs_parse_param(struct fs_context *fc, struct fs_parameter *param)\n--\nfs/ntfs/super.c-157-\t\tif (!vol-\u003enls_map) {\nfs/ntfs/super.c:158:\t\t\tntfs_error(vol-\u003esb, \"Failed to load NLS table '%s'.\",\nfs/ntfs/super.c-159-\t\t\t\t   param-\u003estring);\n--\nfs/ntfs/super.c-165-\t\t\t\tresult.int_32) {\nfs/ntfs/super.c:166:\t\t\tntfs_error(vol-\u003esb, \"Cannot change mft_zone_multiplier on remount.\");\nfs/ntfs/super.c-167-\t\t\treturn -EINVAL;\n--\nfs/ntfs/super.c-169-\t\tif (result.int_32 \u003c 1 || result.int_32 \u003e 4) {\nfs/ntfs/super.c:170:\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/super.c-171-\t\t\t\t\"Invalid mft_zone_multiplier. Using default value, i.e. 1.\");\n--\nfs/ntfs/super.c=265=static int ntfs_reconfigure(struct fs_context *fc)\n--\nfs/ntfs/super.c-289-\t\tif (NVolErrors(vol)) {\nfs/ntfs/super.c:290:\t\t\tntfs_error(sb, \"Volume has errors and is read-only%s\",\nfs/ntfs/super.c-291-\t\t\t\t\tes);\n--\nfs/ntfs/super.c-294-\t\tif (vol-\u003evol_flags \u0026 VOLUME_IS_DIRTY) {\nfs/ntfs/super.c:295:\t\t\tntfs_error(sb, \"Volume is dirty and read-only%s\", es);\nfs/ntfs/super.c-296-\t\t\treturn -EROFS;\n--\nfs/ntfs/super.c-298-\t\tif (vol-\u003evol_flags \u0026 VOLUME_MODIFIED_BY_CHKDSK) {\nfs/ntfs/super.c:299:\t\t\tntfs_error(sb, \"Volume has been modified by chkdsk and is read-only%s\", es);\nfs/ntfs/super.c-300-\t\t\treturn -EROFS;\n--\nfs/ntfs/super.c-302-\t\tif (vol-\u003evol_flags \u0026 VOLUME_MUST_MOUNT_RO_MASK) {\nfs/ntfs/super.c:303:\t\t\tntfs_error(sb, \"Volume has unsupported flags set (0x%x) and is read-only%s\",\nfs/ntfs/super.c-304-\t\t\t\t\tle16_to_cpu(vol-\u003evol_flags), es);\n--\nfs/ntfs/super.c-307-\t\tif (vol-\u003elogfile_ino \u0026\u0026 !ntfs_empty_logfile(vol-\u003elogfile_ino)) {\nfs/ntfs/super.c:308:\t\t\tntfs_error(sb, \"Failed to empty journal LogFile%s\",\nfs/ntfs/super.c-309-\t\t\t\t\tes);\n--\nfs/ntfs/super.c=370=static int ntfs_write_volume_flags(struct ntfs_volume *vol, const __le16 flags)\n--\nfs/ntfs/super.c-406-\tmutex_unlock(\u0026ni-\u003emrec_lock);\nfs/ntfs/super.c:407:\tntfs_error(vol-\u003esb, \"Failed with error code %i.\", -err);\nfs/ntfs/super.c-408-\treturn err;\n--\nfs/ntfs/super.c=442=int ntfs_write_volume_label(struct ntfs_volume *vol, char *label)\n--\nfs/ntfs/super.c-452-\tif (uname_len \u003c 0) {\nfs/ntfs/super.c:453:\t\tntfs_error(vol-\u003esb,\nfs/ntfs/super.c-454-\t\t\t\"Failed to convert volume label '%s' to Unicode.\",\n--\nfs/ntfs/super.c-459-\tif (uname_len \u003e NTFS_MAX_LABEL_LEN) {\nfs/ntfs/super.c:460:\t\tntfs_error(vol-\u003esb,\nfs/ntfs/super.c-461-\t\t\t   \"Volume label is too long (max %d characters).\",\n--\nfs/ntfs/super.c=608=static char *read_ntfs_boot_sector(struct super_block *sb,\n--\nfs/ntfs/super.c-618-\t\tif (!silent)\nfs/ntfs/super.c:619:\t\t\tntfs_error(sb, \"Unable to read primary boot sector.\");\nfs/ntfs/super.c-620-\t\tkfree(boot_sector);\n--\nfs/ntfs/super.c-626-\t\tif (!silent)\nfs/ntfs/super.c:627:\t\t\tntfs_error(sb, \"Primary boot sector is invalid.\");\nfs/ntfs/super.c-628-\t\tkfree(boot_sector);\n--\nfs/ntfs/super.c=643=static bool parse_ntfs_boot_sector(struct ntfs_volume *vol,\n--\nfs/ntfs/super.c-656-\tif (vol-\u003esector_size \u003c vol-\u003esb-\u003es_blocksize) {\nfs/ntfs/super.c:657:\t\tntfs_error(vol-\u003esb,\nfs/ntfs/super.c-658-\t\t\t\"Sector size (%i) is smaller than the device block size (%lu).  This is not supported.\",\n--\nfs/ntfs/super.c-680-\tif (vol-\u003ecluster_size \u003c vol-\u003esector_size) {\nfs/ntfs/super.c:681:\t\tntfs_error(vol-\u003esb,\nfs/ntfs/super.c-682-\t\t\t\"Cluster size (%i) is smaller than the sector size (%i).  This is not supported.\",\n--\nfs/ntfs/super.c-711-\tif (vol-\u003emft_record_size \u003e PAGE_SIZE) {\nfs/ntfs/super.c:712:\t\tntfs_error(vol-\u003esb,\nfs/ntfs/super.c-713-\t\t\t\"Mft record size (%i) exceeds the PAGE_SIZE on your system (%lu).  This is not supported.\",\n--\nfs/ntfs/super.c-746-\tif (vol-\u003eindex_record_size \u003c vol-\u003esector_size) {\nfs/ntfs/super.c:747:\t\tntfs_error(vol-\u003esb,\nfs/ntfs/super.c-748-\t\t\t   \"Index record size (%i) is smaller than the sector size (%i).  This is not supported.\",\n--\nfs/ntfs/super.c-758-\tif (ll \u003e= 1ULL \u003c\u003c 32) {\nfs/ntfs/super.c:759:\t\tntfs_error(vol-\u003esb, \"Cannot handle 64-bit clusters.\");\nfs/ntfs/super.c-760-\t\treturn false;\n--\nfs/ntfs/super.c-765-\tif (ll \u003e= (u64)vol-\u003enr_clusters) {\nfs/ntfs/super.c:766:\t\tntfs_error(vol-\u003esb, \"MFT LCN (%llu, 0x%llx) is beyond end of volume.  Weird.\",\nfs/ntfs/super.c-767-\t\t\t\tll, ll);\n--\nfs/ntfs/super.c-773-\tif (ll \u003e= (u64)vol-\u003enr_clusters) {\nfs/ntfs/super.c:774:\t\tntfs_error(vol-\u003esb, \"MFTMirr LCN (%llu, 0x%llx) is beyond end of volume.  Weird.\",\nfs/ntfs/super.c-775-\t\t\t\tll, ll);\n--\nfs/ntfs/super.c=957=static bool check_mft_mirror(struct ntfs_volume *vol)\n--\nfs/ntfs/super.c-985-\t\t\tif (IS_ERR(mft_folio)) {\nfs/ntfs/super.c:986:\t\t\t\tntfs_error(sb, \"Failed to read $MFT.\");\nfs/ntfs/super.c-987-\t\t\t\treturn false;\n--\nfs/ntfs/super.c-993-\t\t\tif (IS_ERR(mirr_folio)) {\nfs/ntfs/super.c:994:\t\t\t\tntfs_error(sb, \"Failed to read $MFTMirr.\");\nfs/ntfs/super.c-995-\t\t\t\tgoto mft_unmap_out;\n--\nfs/ntfs/super.c-1004-\t\t\tif (ntfs_is_baad_recordp((__le32 *)kmft)) {\nfs/ntfs/super.c:1005:\t\t\t\tntfs_error(sb,\nfs/ntfs/super.c-1006-\t\t\t\t\t\"Incomplete multi sector transfer detected in mft record %i.\",\n--\nfs/ntfs/super.c-1019-\t\t\tif (ntfs_is_baad_recordp((__le32 *)kmirr)) {\nfs/ntfs/super.c:1020:\t\t\t\tntfs_error(sb,\nfs/ntfs/super.c-1021-\t\t\t\t\t\"Incomplete multi sector transfer detected in mft mirror record %i.\",\n--\nfs/ntfs/super.c-1038-\t\tif (memcmp(kmft, kmirr, bytes)) {\nfs/ntfs/super.c:1039:\t\t\tntfs_error(sb,\nfs/ntfs/super.c-1040-\t\t\t\t   \"$MFT and $MFTMirr record %i do not match.  Run chkdsk.\",\n--\nfs/ntfs/super.c-1072-\t\t\t\trl2[i].length != rl[i].length) {\nfs/ntfs/super.c:1073:\t\t\tntfs_error(sb, \"$MFTMirr location mismatch.  Run chkdsk.\");\nfs/ntfs/super.c-1074-\t\t\tup_read(\u0026mirr_ni-\u003erunlist.lock);\n--\nfs/ntfs/super.c=1138=static int check_windows_hibernation_status(struct ntfs_volume *vol)\n--\nfs/ntfs/super.c-1171-\t\t/* A real error occurred. */\nfs/ntfs/super.c:1172:\t\tntfs_error(vol-\u003esb, \"Failed to find inode number for hiberfil.sys.\");\nfs/ntfs/super.c-1173-\t\treturn ret;\n--\nfs/ntfs/super.c-1179-\t\t\tiput(vi);\nfs/ntfs/super.c:1180:\t\tntfs_error(vol-\u003esb, \"Failed to load hiberfil.sys.\");\nfs/ntfs/super.c-1181-\t\treturn IS_ERR(vi) ? PTR_ERR(vi) : -EIO;\n--\nfs/ntfs/super.c-1190-\tif (IS_ERR(folio)) {\nfs/ntfs/super.c:1191:\t\tntfs_error(vol-\u003esb, \"Failed to read from hiberfil.sys.\");\nfs/ntfs/super.c-1192-\t\tret = PTR_ERR(folio);\n--\nfs/ntfs/super.c=1225=static bool load_and_init_attrdef(struct ntfs_volume *vol)\n--\nfs/ntfs/super.c-1280-failed:\nfs/ntfs/super.c:1281:\tntfs_error(sb, \"Failed to initialize attribute definition table.\");\nfs/ntfs/super.c-1282-\treturn false;\n--\nfs/ntfs/super.c=1291=static bool load_and_init_upcase(struct ntfs_volume *vol)\n--\nfs/ntfs/super.c-1373-\t\tmutex_unlock(\u0026ntfs_lock);\nfs/ntfs/super.c:1374:\t\tntfs_error(sb, \"Failed to load $UpCase from the volume. Using default.\");\nfs/ntfs/super.c-1375-\t\treturn true;\n--\nfs/ntfs/super.c-1377-\tmutex_unlock(\u0026ntfs_lock);\nfs/ntfs/super.c:1378:\tntfs_error(sb, \"Failed to initialize upcase table.\");\nfs/ntfs/super.c-1379-\treturn false;\n--\nfs/ntfs/super.c=1399=static bool load_system_files(struct ntfs_volume *vol)\n--\nfs/ntfs/super.c-1418-\t\t\tsb-\u003es_flags |= SB_RDONLY;\nfs/ntfs/super.c:1419:\t\t\tntfs_error(sb, \"%s.  Mounting read-only%s\",\nfs/ntfs/super.c-1420-\t\t\t\t\t!vol-\u003emftmirr_ino ? es1 : es2, es3);\n--\nfs/ntfs/super.c-1426-\tif (IS_ERR(vol-\u003emftbmp_ino)) {\nfs/ntfs/super.c:1427:\t\tntfs_error(sb, \"Failed to load $MFT/$BITMAP attribute.\");\nfs/ntfs/super.c-1428-\t\tgoto iput_mirr_err_out;\n--\nfs/ntfs/super.c-1462-bitmap_failed:\nfs/ntfs/super.c:1463:\t\tntfs_error(sb, \"Failed to load $Bitmap.\");\nfs/ntfs/super.c-1464-\t\tgoto iput_attrdef_err_out;\n--\nfs/ntfs/super.c-1474-volume_failed:\nfs/ntfs/super.c:1475:\t\tntfs_error(sb, \"Failed to load $Volume.\");\nfs/ntfs/super.c-1476-\t\tgoto iput_lcnbmp_err_out;\n--\nfs/ntfs/super.c-1486-\tif (!ctx) {\nfs/ntfs/super.c:1487:\t\tntfs_error(sb, \"Failed to get attribute search context.\");\nfs/ntfs/super.c-1488-\t\tgoto get_ctx_vol_failed;\n--\nfs/ntfs/super.c-1544-\t\t\tsb-\u003es_flags |= SB_RDONLY;\nfs/ntfs/super.c:1545:\t\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\nfs/ntfs/super.c-1546-\t\t}\n--\nfs/ntfs/super.c-1561-\t\t\tsb-\u003es_flags |= SB_RDONLY;\nfs/ntfs/super.c:1562:\t\t\tntfs_error(sb, \"Failed to load LogFile. Mounting read-only.\");\nfs/ntfs/super.c-1563-\t\t}\n--\nfs/ntfs/super.c-1572-\t\t\tiput(vol-\u003eroot_ino);\nfs/ntfs/super.c:1573:\t\tntfs_error(sb, \"Failed to load root directory.\");\nfs/ntfs/super.c-1574-\t\tgoto iput_logfile_err_out;\n--\nfs/ntfs/super.c-1583-\t * The check runs with the super block temporarily marked read-only, so\nfs/ntfs/super.c:1584:\t * that ntfs_error() calls issued internally by ntfs_lookup_inode_by_name()\nfs/ntfs/super.c-1585-\t * and ntfs_iget() cannot trigger errors=panic before the read-only\n--\nfs/ntfs/super.c-1611-\nfs/ntfs/super.c:1612:\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\nfs/ntfs/super.c-1613-\t\tNVolSetErrors(vol);\n--\nfs/ntfs/super.c-1622-\t\t */\nfs/ntfs/super.c:1623:\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\nfs/ntfs/super.c-1624-\t}\n--\nfs/ntfs/super.c-1633-\t\t/* Convert to a read-only mount. */\nfs/ntfs/super.c:1634:\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\nfs/ntfs/super.c-1635-\t\tsb-\u003es_flags |= SB_RDONLY;\n--\nfs/ntfs/super.c-1646-\t\t\tiput(vol-\u003esecure_ino);\nfs/ntfs/super.c:1647:\t\tntfs_error(sb, \"Failed to load $Secure.\");\nfs/ntfs/super.c-1648-\t\tgoto iput_root_err_out;\n--\nfs/ntfs/super.c-1655-\t\t\tiput(vol-\u003eextend_ino);\nfs/ntfs/super.c:1656:\t\tntfs_error(sb, \"Failed to load $Extend.\");\nfs/ntfs/super.c-1657-\t\tgoto iput_sec_err_out;\n--\nfs/ntfs/super.c=2229=static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc)\n--\nfs/ntfs/super.c-2267-\t\tif (!silent)\nfs/ntfs/super.c:2268:\t\t\tntfs_error(sb,\nfs/ntfs/super.c-2269-\t\t\t\t\"Device has unsupported sector size (%i).  The maximum supported sector size on this architecture is %lu bytes.\",\n--\nfs/ntfs/super.c-2281-\t\tif (!silent)\nfs/ntfs/super.c:2282:\t\t\tntfs_error(sb, \"Unable to set device block size.\");\nfs/ntfs/super.c-2283-\t\tgoto err_out_now;\n--\nfs/ntfs/super.c-2290-\t\tif (!silent)\nfs/ntfs/super.c:2291:\t\t\tntfs_error(sb, \"Unable to determine device size.\");\nfs/ntfs/super.c-2292-\t\tgoto err_out_now;\n--\nfs/ntfs/super.c-2299-\t\tif (!silent)\nfs/ntfs/super.c:2300:\t\t\tntfs_error(sb, \"Not an NTFS volume.\");\nfs/ntfs/super.c-2301-\t\tgoto err_out_now;\n--\nfs/ntfs/super.c-2310-\t\tif (!silent)\nfs/ntfs/super.c:2311:\t\t\tntfs_error(sb, \"Unsupported NTFS filesystem.\");\nfs/ntfs/super.c-2312-\t\tgoto err_out_now;\n--\nfs/ntfs/super.c-2318-\t\t\tif (!silent)\nfs/ntfs/super.c:2319:\t\t\t\tntfs_error(sb,\nfs/ntfs/super.c-2320-\t\t\t\t\t   \"Unable to set device block size to sector size (%i).\",\n--\nfs/ntfs/super.c-2356-\t\tif (!silent)\nfs/ntfs/super.c:2357:\t\t\tntfs_error(sb, \"Failed to load essential metadata.\");\nfs/ntfs/super.c-2358-\t\tgoto err_out_now;\n--\nfs/ntfs/super.c-2364-\t\tif (!silent)\nfs/ntfs/super.c:2365:\t\t\tntfs_error(sb, \"Failed to load essential metadata.\");\nfs/ntfs/super.c-2366-\t\tgoto iput_tmp_ino_err_out_now;\n--\nfs/ntfs/super.c-2386-\tif (!vol-\u003elcn_empty_bits_per_page) {\nfs/ntfs/super.c:2387:\t\tntfs_error(sb,\nfs/ntfs/super.c-2388-\t\t\t   \"Unable to allocate pages for storing LCN empty bit counts\\n\");\n--\nfs/ntfs/super.c-2400-\tif (!load_system_files(vol)) {\nfs/ntfs/super.c:2401:\t\tntfs_error(sb, \"Failed to load system files.\");\nfs/ntfs/super.c-2402-\t\tgoto unl_upcase_iput_tmp_ino_err_out_now;\n--\nfs/ntfs/super.c-2434-\t}\nfs/ntfs/super.c:2435:\tntfs_error(sb, \"Failed to allocate root directory.\");\nfs/ntfs/super.c-2436-\t/* Clean up after the successful load_system_files() call from above. */\n"
}

gemini-3.8-flash

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							input: 28740
							output: 38
							thoughts: 35
						

**Investigating the `ntfs_error` Function**

Okay, let's get down to brass tacks. I need to understand where the `ntfs_error` function is defined within the NTFS filesystem code. My first instinct, as always, is to dive into the source and find the definition directly. Time to fire up the trusty grep. I'll search within the `fs/ntfs/` directory – that's the obvious place to start, given that's where the NTFS driver implementation should reside. Let's see what that uncovers.

no matches

{
  "Expression": "__attribute__\\(\\(format\\(printf.*ntfs_error",
  "PathPrefix": "fs/ntfs"
}

{
  "error": "no matches"
}

gemini-3.8-flash

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							input: 28946
							output: 32
							thoughts: 18
						

Here's my attempt at summarizing the thought process, tailored for an expert audience:

**Hunting Down an NTFS Error**

Okay, so I've got this problem, and it's pointing to the NTFS filesystem driver. My first instinct is to dive directly into the code. Given that the error is likely related to the NTFS module, I need to start my search within the `fs/ntfs/` directory. I'm going to look for the specific error code identifier, `ntfs_error`. This search term will hopefully pinpoint the exact location where this error is generated. I'm expecting to find either a definition for `ntfs_error` or, ideally, code that *uses* that identifier. Understanding the usage context will give me a head start on diagnosing the root cause.

{
  "Expression": "ntfs_error",
  "PathPrefix": "fs/ntfs/debug.h"
}

{
  "Output": "fs/ntfs/debug.h=56=extern  __printf(3, 4)\nfs/ntfs/debug.h:57:void __ntfs_error(const char *function, struct super_block *sb,\nfs/ntfs/debug.h-58-\t\t  const char *fmt, ...);\nfs/ntfs/debug.h:59:#define ntfs_error(sb, f, a...)\t\t__ntfs_error(__func__, sb, f, ##a)\nfs/ntfs/debug.h-60-\n"
}

gemini-3.8-flash

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							input: 29305
							output: 29
							thoughts: 13
						

Here's my attempt at summarizing the thought process, tailored for an expert audience:

**Diving into the `__ntfs_error` Implementation**

Okay, so I'm looking at the `__ntfs_error` implementation. I know NTFS pretty well, but every error handler is unique in its specifics. I'm probably going to be focusing on understanding how it maps a particular error code to a user-visible message or recovery action. What are the key internal structures it's referencing? Is it checking for common NTFS corruption scenarios, like bad sector marks, MFT inconsistencies, or problems with the boot sector? Is this function called directly, or is it part of a larger error handling framework for the NTFS driver? I'll need to see how it's integrated with the rest of the file system code, the likely context of where this function is used. This function has to be concise, to prevent unnecessary delays in disk operations.

I'll be looking for any hints about the severity of the error. Does it distinguish between recoverable and unrecoverable errors? Are there any attempts at data salvage or repair within this function, or does it simply report the problem up the stack? I'll also be watching for any potential race conditions or locking issues that might be present in the error handling code. I need to make sure this code is thread-safe and doesn't introduce any new problems while trying to resolve existing ones. This will be the key to understanding how resilient the file system is to various failures.

{
  "Expression": "__ntfs_error",
  "PathPrefix": "fs/ntfs"
}

{
  "Output": "fs/ntfs/debug.c=29=void __ntfs_warning(const char *function, const struct super_block *sb,\n--\nfs/ntfs/debug.c-57-/*\nfs/ntfs/debug.c:58: * __ntfs_error - output an error to the syslog\nfs/ntfs/debug.c-59- * @function:\tname of function outputting the error\n--\nfs/ntfs/debug.c-69- *\nfs/ntfs/debug.c:70: * @function is the name of the function from which __ntfs_error is being\nfs/ntfs/debug.c-71- * called.\n--\nfs/ntfs/debug.c-75- */\nfs/ntfs/debug.c:76:void __ntfs_error(const char *function, struct super_block *sb,\nfs/ntfs/debug.c-77-\t\tconst char *fmt, ...)\n--\nfs/ntfs/debug.h=56=extern  __printf(3, 4)\nfs/ntfs/debug.h:57:void __ntfs_error(const char *function, struct super_block *sb,\nfs/ntfs/debug.h-58-\t\t  const char *fmt, ...);\nfs/ntfs/debug.h:59:#define ntfs_error(sb, f, a...)\t\t__ntfs_error(__func__, sb, f, ##a)\nfs/ntfs/debug.h-60-\n"
}

gemini-3.8-flash

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							input: 30038
							output: 35
							thoughts: 20
						

Okay, let's dive into this. I'm going to pull up `fs/ntfs/debug.c` and zero in on line 76. What's the context here? I need to understand what's happening at that specific point in the NTFS filesystem debugging code. Is it an initialization, an error check, a data structure access? Knowing the surrounding code is key to extracting its meaning. It's likely a critical piece of the debugging puzzle, so I'll be meticulously examining the surrounding lines as well to get a good sense of the control flow and data dependencies around line 76. My experience tells me that line 76 is a vital component of the code. This is what I have to investigate next.

{
  "File": "fs/ntfs/debug.c",
  "FirstLine": 70,
  "LineCount": 40
}

{
  "Contents": "  70:\t * @function is the name of the function from which __ntfs_error is being\n  71:\t * called.\n  72:\t *\n  73:\t * Note, you should be using debug.h::ntfs_error(@sb, @fmt, @...) instead\n  74:\t * as this provides the @function parameter automatically.\n  75:\t */\n  76:\tvoid __ntfs_error(const char *function, struct super_block *sb,\n  77:\t\t\tconst char *fmt, ...)\n  78:\t{\n  79:\t\tstruct va_format vaf;\n  80:\t\tva_list args;\n  81:\t\tint flen = 0;\n  82:\t\n  83:\t\tif (function)\n  84:\t\t\tflen = strlen(function);\n  85:\t\tva_start(args, fmt);\n  86:\t\tvaf.fmt = fmt;\n  87:\t\tvaf.va = \u0026args;\n  88:\t#ifdef DEBUG\n  89:\t\tif (sb)\n  90:\t\t\tpr_err(\"(device %s): %s(): %pV\\n\",\n  91:\t\t\t       sb-\u003es_id, flen ? function : \"\", \u0026vaf);\n  92:\t\telse\n  93:\t\t\tpr_err(\"%s(): %pV\\n\", flen ? function : \"\", \u0026vaf);\n  94:\t#else\n  95:\t\tif (sb)\n  96:\t\t\tpr_err_ratelimited(\"(device %s): %s(): %pV\\n\",\n  97:\t\t\t       sb-\u003es_id, flen ? function : \"\", \u0026vaf);\n  98:\t\telse\n  99:\t\t\tpr_err_ratelimited(\"%s(): %pV\\n\", flen ? function : \"\", \u0026vaf);\n 100:\t#endif\n 101:\t\tva_end(args);\n 102:\t\n 103:\t\tif (sb)\n 104:\t\t\tntfs_handle_error(sb);\n 105:\t}\n 106:\t\n 107:\t#ifdef DEBUG\n 108:\t\n 109:\t/* If 1, output debug messages, and if 0, don't. */\n"
}

gemini-3.8-flash

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							input: 30822
							output: 30
							thoughts: 40
						

Okay, here's my take on those thoughts, framed from my perspective:

**Debugging an NTFS Error**

Right, let's dive into this. The code's flagged an error with an NTFS filesystem, and I need to figure out how it's being handled. The obvious starting point is to zero in on `ntfs_handle_error(sb)` within `fs/ntfs/debug.c`. I'll want to see how this function is *defined* first. It's crucial to understand the control flow here. Where is `ntfs_handle_error` actually defined? What parameters does it take? What does it *do* when it is called? Is it logging? Does it attempt recovery? Does it just panic? Understanding the implementation is the only way to effectively trace this error, and formulate a solid diagnosis.

{
  "Expression": "ntfs_handle_error",
  "PathPrefix": "fs/ntfs"
}

{
  "Output": "fs/ntfs/debug.c=76=void __ntfs_error(const char *function, struct super_block *sb,\n--\nfs/ntfs/debug.c-103-\tif (sb)\nfs/ntfs/debug.c:104:\t\tntfs_handle_error(sb);\nfs/ntfs/debug.c-105-}\n--\nfs/ntfs/debug.h=57=void __ntfs_error(const char *function, struct super_block *sb,\n--\nfs/ntfs/debug.h-60-\nfs/ntfs/debug.h:61:void ntfs_handle_error(struct super_block *sb);\nfs/ntfs/debug.h-62-\n--\nfs/ntfs/super.c=326=const struct option_t on_errors_arr[] = {\n--\nfs/ntfs/super.c-332-\nfs/ntfs/super.c:333:void ntfs_handle_error(struct super_block *sb)\nfs/ntfs/super.c-334-{\n"
}

gemini-3.8-flash

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							input: 31351
							output: 36
							thoughts: 23
						

Here's my summary, as if I were thinking these thoughts:

**Diving into the NTFS Error Handling**

Okay, time to get my hands dirty. I want to understand how the NTFS driver handles errors, specifically at the superblock level. Let's start by digging into `fs/ntfs/super.c`. I need to get familiar with `ntfs_handle_error` – that's the function I suspect is central to the error management process for NTFS filesystems. My focus is going to be on understanding its scope: what kinds of errors it addresses, how it's triggered, and what strategies it employs for recovery or reporting. This is where the rubber meets the road, so let's see how they deal with the ugly stuff.

{
  "File": "fs/ntfs/super.c",
  "FirstLine": 330,
  "LineCount": 40
}

{
  "Contents": " 330:\t\t{ 0,\t\t\tNULL }\n 331:\t};\n 332:\t\n 333:\tvoid ntfs_handle_error(struct super_block *sb)\n 334:\t{\n 335:\t\tstruct ntfs_volume *vol = NTFS_SB(sb);\n 336:\t\n 337:\t\tif (sb_rdonly(sb))\n 338:\t\t\treturn;\n 339:\t\n 340:\t\tif (vol-\u003eon_errors == ON_ERRORS_REMOUNT_RO) {\n 341:\t\t\tsb-\u003es_flags |= SB_RDONLY;\n 342:\t\t\tpr_crit(\"(device %s): Filesystem has been set read-only\\n\",\n 343:\t\t\t\tsb-\u003es_id);\n 344:\t\t} else if (vol-\u003eon_errors == ON_ERRORS_PANIC) {\n 345:\t\t\tpanic(\"ntfs: (device %s): panic from previous error\\n\",\n 346:\t\t\t      sb-\u003es_id);\n 347:\t\t} else if (vol-\u003eon_errors == ON_ERRORS_CONTINUE) {\n 348:\t\t\tif (errseq_check(\u0026sb-\u003es_wb_err, vol-\u003ewb_err) == -ENODEV) {\n 349:\t\t\t\tNVolSetShutdown(vol);\n 350:\t\t\t\tvol-\u003ewb_err = sb-\u003es_wb_err;\n 351:\t\t\t}\n 352:\t\t}\n 353:\t}\n 354:\t\n 355:\t/*\n 356:\t * ntfs_write_volume_flags - write new flags to the volume information flags\n 357:\t * @vol:\tntfs volume on which to modify the flags\n 358:\t * @flags:\tnew flags value for the volume information flags\n 359:\t *\n 360:\t * Internal function.  You probably want to use ntfs_{set,clear}_volume_flags()\n 361:\t * instead (see below).\n 362:\t *\n 363:\t * Replace the volume information flags on the volume @vol with the value\n 364:\t * supplied in @flags.  Note, this overwrites the volume information flags, so\n 365:\t * make sure to combine the flags you want to modify with the old flags and use\n 366:\t * the result when calling ntfs_write_volume_flags().\n 367:\t *\n 368:\t * Return 0 on success and -errno on error.\n 369:\t */\n"
}

gemini-3.8-flash

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							input: 32233
							output: 28
							thoughts: 1195
						

**Analysis of NTFS Hibernation Check Patch**

Alright, let's break this down. I'm looking at the `ntfs_handle_error` function and immediately see its role in handling filesystem errors, especially the read-only re-mount or panic scenarios depending on the `ON_ERRORS` setting. Then, I'm examining this specific patch that deals with Windows hibernation checks during the NTFS mount process. It's a critical area because we don't want to mess with a hibernated Windows system.

The patch's core logic temporarily sets the superblock `SB_RDONLY` flag before calling `check_windows_hibernation_status`. This is smart; they're essentially making sure they don't *write* anything to disk while figuring out if Windows is in a hibernated state. If hibernation is detected (`err` is non-zero), the mount proceeds in read-only mode, regardless. The comments emphasize this is a *safety interlock*. If any errors are recorded during the check (e.g. loading the logfile), it *stays* read-only.

My immediate thought is, can this be triggered in a fuzzing environment, specifically QEMU or Syzkaller? The answer is a resounding *yes*. Mounting an NTFS image (with `mount` or syzkaller's `syz_mount_image` and NTFS) gets us right into `ntfs_fill_super()`, which, in turn, calls `load_system_files()`. This is where the code we are analyzing sits. Syzkaller and standard fuzzing methods hit filesystems heavily!

Now, the next logical step is to see if this patch is a good target for fuzzing. I need to make sure it doesn't fall under any of the "negative criteria" - non-kernel changes, hardware-specific stuff, or unreachable paths. Clearly, it isn't hardware. It is directly altering code in `fs/ntfs/super.c`. And it's definitely reachable through standard mount procedures. Therefore, I can confidently mark this as `WorthFuzzing=true`.

Lastly, I need to check the relevant kernel configs. The NTFS filesystem support (`CONFIG_NTFS_FS`) is the basic requirement. It includes NLS and FS_IOMAP. But, let me double-check about write support. Does `NTFS_RW` or some similar config exist? I need to know about write support. I'll quickly grep the source tree for `CONFIG_NTFS` to identify related configurations.

{
  "Expression": "CONFIG_NTFS",
  "PathPrefix": "fs/ntfs"
}

{
  "Output": "fs/ntfs/Makefile-2-\nfs/ntfs/Makefile:3:obj-$(CONFIG_NTFS_FS) += ntfs.o\nfs/ntfs/Makefile-4-\nfs/ntfs/Makefile=5=ntfs-y := aops.o attrib.o collate.o dir.o file.o index.o inode.o \\\n--\nfs/ntfs/Makefile-9-\nfs/ntfs/Makefile:10:ntfs-$(CONFIG_NTFS_FS_WOF_COMPRESSION) += wof.o \\\nfs/ntfs/Makefile-11-\tlib/decompress_common.o lib/lzx_decompress.o lib/xpress_decompress.o\nfs/ntfs/Makefile-12-\nfs/ntfs/Makefile:13:ccflags-$(CONFIG_NTFS_DEBUG) += -DDEBUG\n--\nfs/ntfs/aops.c=68=static int ntfs_read_folio(struct file *file, struct folio *folio)\n--\nfs/ntfs/aops.c-93-\t\tif (NInoWofCompressed(ni)) {\nfs/ntfs/aops.c:94:#ifdef CONFIG_NTFS_FS_WOF_COMPRESSION\nfs/ntfs/aops.c-95-\t\t\treturn ntfs_read_wof_compressed_block(folio);\n--\nfs/ntfs/ea.c=950=const struct xattr_handler * const ntfs_xattr_handlers[] = {\n--\nfs/ntfs/ea.c-955-\nfs/ntfs/ea.c:956:#ifdef CONFIG_NTFS_FS_POSIX_ACL\nfs/ntfs/ea.c-957-struct posix_acl *ntfs_get_acl(struct mnt_idmap *idmap, struct dentry *dentry,\n--\nfs/ntfs/ea.h=17=ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size);\nfs/ntfs/ea.h-18-\nfs/ntfs/ea.h:19:#ifdef CONFIG_NTFS_FS_POSIX_ACL\nfs/ntfs/ea.h-20-struct posix_acl *ntfs_get_acl(struct mnt_idmap *idmap, struct dentry *dentry,\n--\nfs/ntfs/namei.c=394=static struct ntfs_inode *__ntfs_create(struct mnt_idmap *idmap, struct inode *dir,\n--\nfs/ntfs/namei.c-448-\nfs/ntfs/namei.c:449:#ifdef CONFIG_NTFS_FS_POSIX_ACL\nfs/ntfs/namei.c-450-\tif (!S_ISLNK(mode) \u0026\u0026 (sb-\u003es_flags \u0026 SB_POSIXACL)) {\n--\nfs/ntfs/ntfs.h=204=int ntfs_read_compressed_block(struct folio *folio);\nfs/ntfs/ntfs.h:205:#ifdef CONFIG_NTFS_FS_WOF_COMPRESSION\nfs/ntfs/ntfs.h-206-int ntfs_read_wof_compressed_block(struct folio *folio);\n--\nfs/ntfs/ntfs_codec.h=17=enum ntfs_codec_id {\nfs/ntfs/ntfs_codec.h-18-\tNTFS_CODEC_LZNT1,\nfs/ntfs/ntfs_codec.h:19:#ifdef CONFIG_NTFS_FS_WOF_COMPRESSION\nfs/ntfs/ntfs_codec.h-20-\tNTFS_CODEC_XPRESS4K,\n--\nfs/ntfs/ntfs_codec.h=46=extern const struct ntfs_codec_ops ntfs_lznt1_codec_ops;\nfs/ntfs/ntfs_codec.h:47:#ifdef CONFIG_NTFS_FS_WOF_COMPRESSION\nfs/ntfs/ntfs_codec.h-48-extern const struct ntfs_codec_ops ntfs_xpress4k_codec_ops;\n--\nfs/ntfs/reparse.c=269=int ntfs_parse_reparse(struct ntfs_inode *ni, unsigned int *mode)\n--\nfs/ntfs/reparse.c-343-\t{\nfs/ntfs/reparse.c:344:#ifdef CONFIG_NTFS_FS_WOF_COMPRESSION\nfs/ntfs/reparse.c-345-\t\tconst struct wof_reparse_data *wof_data =\n--\nfs/ntfs/super.c=123=static int ntfs_parse_param(struct fs_context *fc, struct fs_parameter *param)\n--\nfs/ntfs/super.c-222-\tcase Opt_acl:\nfs/ntfs/super.c:223:#ifdef CONFIG_NTFS_FS_POSIX_ACL\nfs/ntfs/super.c-224-\t\tif (result.boolean)\n--\nfs/ntfs/super.c=2711=static void __exit exit_ntfs_fs(void)\n--\nfs/ntfs/super.c-2721-\trcu_barrier();\nfs/ntfs/super.c:2722:#ifdef CONFIG_NTFS_FS_WOF_COMPRESSION\nfs/ntfs/super.c-2723-\tntfs_wof_free_workspaces();\n"
}

gemini-3.8-flash

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							input: 35339
							output: 147
							thoughts: 981
						

**NTFS Fuzzing Target Identification**

Okay, so I need to figure out what to focus on for fuzzing related to this NTFS patch. First, it looks like `CONFIG_NTFS_FS` is all I need to enable the relevant code (`fs/ntfs/super.c`). Checking `fs/ntfs/Kconfig`, I can see there are no dependencies.

Now, let's nail down those focus symbols. The guidelines say to avoid ubiquitous functions and target specific logic. Looking at the patch, the modified function is `load_system_files`. It's static, but that's fine; static, non-inlined C functions *do* have symbols in vmlinux. That function is pretty large, so inlining is probably not an issue, but let's be thorough and also check its caller, `ntfs_fill_super`. And, right around the changes, there's `check_windows_hibernation_status`.

Let's quickly confirm if `ntfs_fill_super` is an entrypoint. Yep, it seems to be: `ntfs_init_fs_context` -> `ntfs_context_ops` -> `ntfs_get_tree` -> `get_tree_bdev(fc, ntfs_fill_super)`. So, `ntfs_fill_super`, `load_system_files`, and `check_windows_hibernation_status` all look excellent – they're specific to NTFS mounting and hibernation status checks.

Alright, let's re-examine that code snippet in `load_system_files`:
```c
	if (!sb_rdonly(sb)) {
		sb->s_flags |= SB_RDONLY;
		temporary_ro = true;
	}
	err = check_windows_hibernation_status(vol);
	if (temporary_ro && !err && !NVolErrors(vol))
		sb->s_flags &= ~SB_RDONLY;
	if (unlikely(err)) {
...
```

I'm seeing that this code modifies the mount and error handling flow in the NTFS filesystem. It's playing with `sb->s_flags` (setting and clearing `SB_RDONLY` dynamically) and interacts with `NVolErrors(vol)`. This is significant! It's changing error behavior and the read-only/read-write state based on hibernation status and volume errors. Critically, this code is *fully* reachable through filesystem mount operations, meaning I can hit it in a standard syzkaller QEMU environment.

Okay, this is definitely worth fuzzing. I should set the parameters for `set-results` as follows:

*   `WorthFuzzing: true`
*   `EnableConfigs: ["NTFS_FS"]`
*   `FocusSymbols: ["load_system_files", "check_windows_hibernation_status", "ntfs_fill_super"]`
*   `Reasoning: The patch modifies filesystem mount-time state handling in load_system_files() within NTFS (fs/ntfs/super.c). It temporarily flags the superblock as read-only during check_windows_hibernation_status() to prevent errors=panic triggers from internal lookup errors, and alters read-only fallback logic. This executable kernel code is directly reachable by mounting NTFS filesystem images in standard virtualized environments.`

Let's call `set-results` now.

{
  "EnableConfigs": [
    "NTFS_FS"
  ],
  "FocusSymbols": [
    "load_system_files",
    "check_windows_hibernation_status",
    "ntfs_fill_super"
  ],
  "Reasoning": "The patch modifies the mount-time superblock state and error-handling logic in NTFS (fs/ntfs/super.c) by temporarily marking the volume read-only while checking Windows hibernation status to avoid triggering errors=panic before the read-only fallback completes. This directly affects filesystem mount behavior and error state transitions, which are fully reachable and exerciseable by mounting NTFS filesystem images in standard virtualized test environments.",
  "WorthFuzzing": true
}

{
  "EnableConfigs": [
    "NTFS_FS"
  ],
  "FocusSymbols": [
    "load_system_files",
    "check_windows_hibernation_status",
    "ntfs_fill_super"
  ],
  "Reasoning": "The patch modifies the mount-time superblock state and error-handling logic in NTFS (fs/ntfs/super.c) by temporarily marking the volume read-only while checking Windows hibernation status to avoid triggering errors=panic before the read-only fallback completes. This directly affects filesystem mount behavior and error state transitions, which are fully reachable and exerciseable by mounting NTFS filesystem images in standard virtualized test environments.",
  "WorthFuzzing": true
}

{
  "WorthFuzzing": true
}

null

core

null

{
  "KMSANReasoning": "The patch modifies NTFS mount logic in `load_system_files()` to temporarily set `SB_RDONLY` while checking Windows hibernation status (`check_windows_hibernation_status()`). This prevents `ntfs_error()` from prematurely triggering a panic when `errors=panic` mount option is used.\n\nThe only new local variable introduced is `bool temporary_ro = false;`, which is explicitly initialized. The changes only adjust superblock flags (`sb-\u003es_flags`) and control flow around error reporting and read-only fallback. There are no allocations of uninitialized memory, no structures copied to user space, and no alterations to data lengths, buffer boundaries, or uninitialized data access paths. Therefore, no uninitialized memory risks are introduced or exposed, and a dedicated KMSAN session is not needed.",
  "NeedsKMSAN": false
}

You are an expert Linux kernel security engineer specializing in kernel memory
error detectors (KASAN and KMSAN). Your job is to review the provided patch series and
determine if the code changes justify spawning a dedicated KMSAN (KernelMemorySanitizer)
fuzzing session in addition to standard KASAN fuzzing.

CRITICAL DISTINCTION BETWEEN KASAN AND KMSAN:
- Standard KASAN kernel builds (upstream-apparmor-kasan.config) already enable
  a comprehensive suite of debugging tools and sanitizers, including KASAN
  (out-of-bounds accesses, use-after-free, double free, invalid free), LOCKDEP
  (locking bugs and deadlocks), UB-sanitizers, and memory corruption checks.
- KMSAN (KernelMemorySanitizer) detects reads of UNINITIALIZED memory (stack, heap,
  or page allocations) and kernel-to-user memory info-leaks.

Rule: THERE IS NO SENSE IN RUNNING A KMSAN SESSION IF A BUG CAN BE CAUGHT BY KASAN,
LOCKDEP, OR OTHER STANDARD BUG DETECTORS.
A dedicated KMSAN fuzzing session incurs significant resource costs. You must ONLY
set NeedsKMSAN=true if the code changes introduce or expose UNINITIALIZED MEMORY risks
that are detected ONLY by KMSAN.

Look holistically at the patch series and surrounding code. Even if no direct
uninitialized field accesses or new buffer allocations are added in the diff itself,
a patch may alter control flow, bounds checking, or data length calculations in ways
that change how the rest of the code operates on existing buffers (e.g. allowing
uninitialized stack/heap memory to be read, copied to user space, or used in control
flow). Do not hesitate to use your code access tools to inspect the surrounding code,
called functions, and callers.

Set NeedsKMSAN=true ONLY IF the patch introduces or modifies:
1. Kernel structures sent to user space (via copy_to_user, put_user, netlink skb
   attributes, ioctl output arguments, socket options, or BPF buffers) where fields
   or structure padding might not be fully initialized/zeroed.
2. Conditional logic or branching that depends on potentially uninitialized variables
   or struct fields.
3. Allocation or initialization of complex data structures where uninitialized fields
   could be read later in reachable code paths.
4. Bounds checks, lengths, or logic in a way that allows surrounding code to access
   uninitialized bytes of existing buffers.

Set NeedsKMSAN=false IF:
- The code changes primarily risk out-of-bounds access, array overflows, NULL pointer
  dereferences, locking deadlocks, or use-after-free bugs (these are already caught
  by KASAN, LOCKDEP, or standard bug detectors).
- All stack/heap structures touched or introduced by the patch are fully zeroed
  or initialized (e.g. using = {0}, memset, kzalloc) before being read or copied.
- The patch does not introduce any risk of uninitialized memory usage or info-leaks.

Use your code access tools to inspect the surrounding code if necessary, then provide
detailed KMSANReasoning contrasting KASAN vs KMSAN applicability for this patch.
Prefer calling several tools at the same time to save round-trips.


Use set-results tool to provide results of the analysis.
It must be called exactly once before the final reply.
Ignore results of this tool.

Target architecture: amd64

For your convenience, here is the diff of the changes:
commit 2c814e3b3a0eafb7cd1998806d53c3307903cb39
Author: syz-cluster <triage@syzkaller.com>
Date:   Tue Sep 22 07:28:17 2026 +0000

    syz-cluster: applied patch under review

diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index 30481e5d5dd4e..f341b7754a5ce 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -1404,6 +1404,7 @@ static bool load_system_files(struct ntfs_volume *vol)
 	struct ntfs_attr_search_ctx *ctx;
 	struct restart_page_header *rp;
 	int err;
+	bool temporary_ro = false;
 
 	ntfs_debug("Entering.");
 	/* Get mft mirror inode compare the contents of $MFT and $MFTMirr. */
@@ -1578,8 +1579,20 @@ static bool load_system_files(struct ntfs_volume *vol)
 	 * NVolErrors() without setting the dirty volume flag and mount
 	 * read-only.  This will prevent read-write remounting and it will also
 	 * prevent all writes.
+	 *
+	 * The check runs with the super block temporarily marked read-only, so
+	 * that ntfs_error() calls issued internally by ntfs_lookup_inode_by_name()
+	 * and ntfs_iget() cannot trigger errors=panic before the read-only
+	 * fallback has run.  The super block is not published yet, so the flag
+	 * is not visible elsewhere.
 	 */
+	if (!sb_rdonly(sb)) {
+		sb->s_flags |= SB_RDONLY;
+		temporary_ro = true;
+	}
 	err = check_windows_hibernation_status(vol);
+	if (temporary_ro && !err && !NVolErrors(vol))
+		sb->s_flags &= ~SB_RDONLY;
 	if (unlikely(err)) {
 		static const char *es1a = "Failed to determine if Windows is hibernated";
 		static const char *es1b = "Windows is hibernated";
@@ -1587,12 +1600,27 @@ static bool load_system_files(struct ntfs_volume *vol)
 		const char *es1;
 
 		es1 = err < 0 ? es1a : es1b;
-		/* If a read-write mount, convert it to a read-only mount. */
-		if (!sb_rdonly(sb) && vol->on_errors == ON_ERRORS_REMOUNT_RO) {
+		/*
+		 * A Windows hibernation image is not a filesystem error, so
+		 * this is a safety interlock rather than something the
+		 * errors= policy may downgrade: always convert a read-write
+		 * mount to read-only.
+		 */
+		if (!sb_rdonly(sb))
 			sb->s_flags |= SB_RDONLY;
-			ntfs_error(sb, "%s.  Mounting read-only%s", es1, es2);
-		}
+
+		ntfs_error(sb, "%s.  Mounting read-only%s", es1, es2);
 		NVolSetErrors(vol);
+	} else if (unlikely(temporary_ro && sb_rdonly(sb))) {
+		static const char *es1 = "Errors were recorded during mount";
+		static const char *es2 = ".  Run chkdsk.";
+
+		/*
+		 * Errors were recorded during the check or earlier, e.g. when
+		 * loading the LogFile.  Stay read-only, like ntfs_reconfigure()
+		 * does for volumes with recorded errors.
+		 */
+		ntfs_error(sb, "%s.  Mounting read-only%s", es1, es2);
 	}
 
 	/* If (still) a read-write mount, empty the logfile. */

gemini-3.8-flash

null

null

							input: 2840
							output: 37
							thoughts: 1020
						

**Analyzing the NTFS Hibernation Check Patch**

Alright, let's dive into this patch in `fs/ntfs/super.c`. My initial thought is to understand the context and the purpose of this change, so I'll start by reviewing the surrounding code. Based on the patch diff, it looks like we're dealing with the `load_system_files()` function, which is critical during the NTFS mount process. Specifically, I'm focusing on the section related to Windows hibernation and error handling, which I'm familiar with from previous work with NTFS file systems.

The core of the patch involves adding a temporary read-only state during a check of Windows hibernation status. It makes a lot of sense, now I understand why, as I know that Windows hibernation can cause issues with consistent file system states. The check, `check_windows_hibernation_status(vol)`, needs to be performed before we fully commit to a read-write mount. The previous code was not safe, and this resolves the panic condition that I would expect to find at this point.

The new code adds a `temporary_ro` boolean flag. If the superblock isn't already read-only, we temporarily mark it as such before calling `check_windows_hibernation_status()`. Then, the logic is as follows: if the check fails with an error and the mount is not read-only, we forcibly make it read-only. However, the new code also addresses a critical safety concern: to ensure that the error check does not itself introduce an error due to the nature of the file system. So, we temporarily make the file system read-only and allow the error check to safely fail, before reverting to read-write.

Furthermore, if the check succeeds without an error, we revert to read-write. Then, if there are errors and temporary read-only is set, we still mark the filesystem as read-only.

This seems to be a proactive measure to prevent potential data corruption or unexpected behavior. This safety check is not really a policy decision, like on_errors, as it is a pure safety measure to enable the check.

I see that this also relates to ensuring consistent behavior, preventing errors like `panic`, and preventing further write operations. I'm noting this is also used in `ntfs_error` for other errors, so this makes sense. The code's comment indicates this should prevent accidental write operations if the system is, in fact, hibernated, and thus in a potentially inconsistent state. It does this by ensuring the NTFS volume is remounted read-only to avoid any accidental write operations. Excellent.

{
  "File": "fs/ntfs/super.c",
  "FirstLine": 1570,
  "LineCount": 70
}

{
  "Contents": "1570:\t\tif (IS_ERR(vol-\u003eroot_ino)) {\n1571:\t\t\tif (!IS_ERR(vol-\u003eroot_ino))\n1572:\t\t\t\tiput(vol-\u003eroot_ino);\n1573:\t\t\tntfs_error(sb, \"Failed to load root directory.\");\n1574:\t\t\tgoto iput_logfile_err_out;\n1575:\t\t}\n1576:\t\t/*\n1577:\t\t * Check if Windows is suspended to disk on the target volume.  If it\n1578:\t\t * is hibernated, we must not write *anything* to the disk so set\n1579:\t\t * NVolErrors() without setting the dirty volume flag and mount\n1580:\t\t * read-only.  This will prevent read-write remounting and it will also\n1581:\t\t * prevent all writes.\n1582:\t\t *\n1583:\t\t * The check runs with the super block temporarily marked read-only, so\n1584:\t\t * that ntfs_error() calls issued internally by ntfs_lookup_inode_by_name()\n1585:\t\t * and ntfs_iget() cannot trigger errors=panic before the read-only\n1586:\t\t * fallback has run.  The super block is not published yet, so the flag\n1587:\t\t * is not visible elsewhere.\n1588:\t\t */\n1589:\t\tif (!sb_rdonly(sb)) {\n1590:\t\t\tsb-\u003es_flags |= SB_RDONLY;\n1591:\t\t\ttemporary_ro = true;\n1592:\t\t}\n1593:\t\terr = check_windows_hibernation_status(vol);\n1594:\t\tif (temporary_ro \u0026\u0026 !err \u0026\u0026 !NVolErrors(vol))\n1595:\t\t\tsb-\u003es_flags \u0026= ~SB_RDONLY;\n1596:\t\tif (unlikely(err)) {\n1597:\t\t\tstatic const char *es1a = \"Failed to determine if Windows is hibernated\";\n1598:\t\t\tstatic const char *es1b = \"Windows is hibernated\";\n1599:\t\t\tstatic const char *es2 = \".  Run chkdsk.\";\n1600:\t\t\tconst char *es1;\n1601:\t\n1602:\t\t\tes1 = err \u003c 0 ? es1a : es1b;\n1603:\t\t\t/*\n1604:\t\t\t * A Windows hibernation image is not a filesystem error, so\n1605:\t\t\t * this is a safety interlock rather than something the\n1606:\t\t\t * errors= policy may downgrade: always convert a read-write\n1607:\t\t\t * mount to read-only.\n1608:\t\t\t */\n1609:\t\t\tif (!sb_rdonly(sb))\n1610:\t\t\t\tsb-\u003es_flags |= SB_RDONLY;\n1611:\t\n1612:\t\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\n1613:\t\t\tNVolSetErrors(vol);\n1614:\t\t} else if (unlikely(temporary_ro \u0026\u0026 sb_rdonly(sb))) {\n1615:\t\t\tstatic const char *es1 = \"Errors were recorded during mount\";\n1616:\t\t\tstatic const char *es2 = \".  Run chkdsk.\";\n1617:\t\n1618:\t\t\t/*\n1619:\t\t\t * Errors were recorded during the check or earlier, e.g. when\n1620:\t\t\t * loading the LogFile.  Stay read-only, like ntfs_reconfigure()\n1621:\t\t\t * does for volumes with recorded errors.\n1622:\t\t\t */\n1623:\t\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\n1624:\t\t}\n1625:\t\n1626:\t\t/* If (still) a read-write mount, empty the logfile. */\n1627:\t\tif (!sb_rdonly(sb) \u0026\u0026\n1628:\t\t    vol-\u003elogfile_ino \u0026\u0026 !ntfs_empty_logfile(vol-\u003elogfile_ino) \u0026\u0026\n1629:\t\t    vol-\u003eon_errors == ON_ERRORS_REMOUNT_RO) {\n1630:\t\t\tstatic const char *es1 = \"Failed to empty LogFile\";\n1631:\t\t\tstatic const char *es2 = \".  Mount in Windows.\";\n1632:\t\n1633:\t\t\t/* Convert to a read-only mount. */\n1634:\t\t\tntfs_error(sb, \"%s.  Mounting read-only%s\", es1, es2);\n1635:\t\t\tsb-\u003es_flags |= SB_RDONLY;\n1636:\t\t\tNVolSetErrors(vol);\n1637:\t\t}\n1638:\t\t/* If on NTFS versions before 3.0, we are done. */\n1639:\t\tif (unlikely(vol-\u003emajor_ver \u003c 3))\n"
}

gemini-3.8-flash

null

null

							input: 5699
							output: 29
							thoughts: 11
						

Okay, here's my attempt at summarizing my thought process, assuming I'm a seasoned professional in the field and the "text below" is the code/context related to `ntfs_error`:

**Investigating the `ntfs_error` Function**

Alright, let's dive into this `ntfs_error` function. My initial thought process is to understand *exactly* what this thing is responsible for. I'm assuming, given the name, it's something specific to NTFS file systems and likely handles error reporting or error code interpretation related to that specific file system format. I'll need to look at the surrounding code to determine its role within the larger context. Is it a core error handler for the driver, or is it a specific helper function called within a larger system? Is it logging the errors, translating them, or escalating them? I want to determine the function's level of impact on other parts of the system. I also will want to be sure and trace all functions which calls this and determine where it is called in. After this is done, I will have a more comprehensive understanding of its implementation and its potential interactions with the file system.

no matches

{
  "Expression": "void ntfs_error",
  "PathPrefix": "fs/ntfs"
}

{
  "error": "no matches"
}

gemini-3.8-flash

null

null

							input: 5997
							output: 29
							thoughts: 12
						

Here's my attempt at summarizing the thought process, tailored for an expert audience:

**Hunting Down That NTFS Error**

Okay, so I'm digging into something, and the term `ntfs_error` just popped up. My immediate thought is, let's nail down precisely *what* that refers to. No point in wasting time on a vague concept. I need the definition – the technical, precise, documented definition. I'm after the specific error code, the context within the NTFS file system where it arises, the conditions that trigger it. Is this something that's handled at the kernel level? Is it a Windows API call that generates it? Knowing these details up front will save me a ton of time down the road. I'm thinking I'll need to hit the file system documentation, maybe some source code if I can get my hands on it, or perhaps a deep dive into the Windows DDK. Understanding the genesis of this error is critical to whatever problem I'm trying to solve.

{
  "Expression": "ntfs_error\\(",
  "PathPrefix": "fs/ntfs"
}

{
  "Output": "\nFull output is too long, showing 500 out of 2543 lines.\nUse more precise expression if possible.\n\nfs/ntfs/aops.c=133=static sector_t ntfs_bmap(struct address_space *mapping, sector_t block)\n--\nfs/ntfs/aops.c-147-\t    NInoWofCompressed(ni) || NInoMstProtected(ni)) {\nfs/ntfs/aops.c:148:\t\tntfs_error(vol-\u003esb, \"BMAP does not make sense for %s attributes, returning 0.\",\nfs/ntfs/aops.c-149-\t\t\t\t(ni-\u003etype != AT_DATA) ? \"non-data\" :\n--\nfs/ntfs/aops.c-191-\t\tcase LCN_ENOMEM:\nfs/ntfs/aops.c:192:\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/aops.c-193-\t\t\t\t\"Not enough memory to complete mapping for inode 0x%llx. Returning 0.\",\n--\nfs/ntfs/aops.c-196-\t\tdefault:\nfs/ntfs/aops.c:197:\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/aops.c-198-\t\t\t\t\"Failed to complete mapping for inode 0x%llx.  Run chkdsk. Returning 0.\",\n--\nfs/ntfs/aops.c-219-\t\tif (unlikely(block != lcn)) {\nfs/ntfs/aops.c:220:\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/aops.c-221-\t\t\t\t\"Physical block 0x%llx is too large to be returned, returning 0.\",\n--\nfs/ntfs/attrib.c=377=s64 ntfs_attr_vcn_to_lcn_nolock(struct ntfs_inode *ni, const s64 vcn,\n--\nfs/ntfs/attrib.c-434-\tif (lcn != LCN_ENOENT)\nfs/ntfs/attrib.c:435:\t\tntfs_error(ni-\u003evol-\u003esb, \"Failed with error code %lli.\",\nfs/ntfs/attrib.c-436-\t\t\t\t(long long)lcn);\n--\nfs/ntfs/attrib.c=527=struct runlist_element *ntfs_attr_find_vcn_nolock(struct ntfs_inode *ni, const s64 vcn,\n--\nfs/ntfs/attrib.c-579-\tif (err != -ENOENT)\nfs/ntfs/attrib.c:580:\t\tntfs_error(ni-\u003evol-\u003esb, \"Failed with error code %i.\", err);\nfs/ntfs/attrib.c-581-\treturn ERR_PTR(err);\n--\nfs/ntfs/attrib.c=734=static bool ntfs_attr_value_is_valid(struct ntfs_volume *vol,\n--\nfs/ntfs/attrib.c-772-corrupt:\nfs/ntfs/attrib.c:773:\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-774-\t\t   \"Corrupt %#x attribute in MFT record %llu\\n\",\n--\nfs/ntfs/attrib.c=836=static int ntfs_attr_find(const __le32 type, const __le16 *name,\n--\nfs/ntfs/attrib.c-881-\t\t\t    attr_len - name_offset \u003c name_size) {\nfs/ntfs/attrib.c:882:\t\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-883-\t\t\t\t\t   \"Corrupt attribute name in MFT record %llu\\n\",\n--\nfs/ntfs/attrib.c-964-\t}\nfs/ntfs/attrib.c:965:\tntfs_error(vol-\u003esb, \"mft %#llx, type %#x is corrupt. Run chkdsk.\",\nfs/ntfs/attrib.c-966-\t\t   (long long)ctx-\u003entfs_ino-\u003emft_no, le32_to_cpu(type));\n--\nfs/ntfs/attrib.c=979=char *ntfs_attr_name_get(const struct ntfs_volume *vol, const __le16 *uname,\n--\nfs/ntfs/attrib.c-986-\tif (name_len \u003c 0) {\nfs/ntfs/attrib.c:987:\t\tntfs_error(vol-\u003esb, \"ntfs_ucstonls error\");\nfs/ntfs/attrib.c-988-\t\t/* This function when returns -1, memory for name might\n--\nfs/ntfs/attrib.c=1063=int load_attribute_list(struct ntfs_inode *base_ni, u8 *al_start, const s64 size)\n--\nfs/ntfs/attrib.c-1071-\tif (IS_ERR(attr_vi)) {\nfs/ntfs/attrib.c:1072:\t\tntfs_error(base_ni-\u003evol-\u003esb,\nfs/ntfs/attrib.c-1073-\t\t\t   \"Failed to open an inode for Attribute list, mft = %llu\",\n--\nfs/ntfs/attrib.c-1079-\t\tiput(attr_vi);\nfs/ntfs/attrib.c:1080:\t\tntfs_error(base_ni-\u003evol-\u003esb,\nfs/ntfs/attrib.c-1081-\t\t\t   \"Failed to read attribute list, mft = %llu\",\n--\nfs/ntfs/attrib.c-1087-\tif (!ntfs_attr_list_is_valid(al_start, size)) {\nfs/ntfs/attrib.c:1088:\t\tntfs_error(base_ni-\u003evol-\u003esb, \"Corrupt attribute list, mft = %llu\",\nfs/ntfs/attrib.c-1089-\t\t\t   base_ni-\u003emft_no);\n--\nfs/ntfs/attrib.c=1145=static int ntfs_external_attr_find(const __le32 type,\n--\nfs/ntfs/attrib.c-1262-\t\t\t/* Not found?!? Absurd! */\nfs/ntfs/attrib.c:1263:\t\t\tntfs_error(ctx-\u003entfs_ino-\u003evol-\u003esb, \"Attribute list wasn't found\");\nfs/ntfs/attrib.c-1264-\t\t\treturn -EIO;\n--\nfs/ntfs/attrib.c-1359-\t\t\tif (MSEQNO_LE(al_entry-\u003emft_reference) != ni-\u003eseq_no) {\nfs/ntfs/attrib.c:1360:\t\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-1361-\t\t\t\t\t\"Found stale mft reference in attribute list of base inode 0x%llx.%s\",\n--\nfs/ntfs/attrib.c-1381-\t\t\t\tif (IS_ERR(ctx-\u003emrec)) {\nfs/ntfs/attrib.c:1382:\t\t\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-1383-\t\t\t\t\t\t\t\"Failed to map extent mft record 0x%lx of base inode 0x%llx.%s\",\n--\nfs/ntfs/attrib.c-1496-\nfs/ntfs/attrib.c:1497:\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-1498-\t\t\t\"Base inode 0x%llx contains corrupt attribute, mft %#llx, type %#x. %s\",\n--\nfs/ntfs/attrib.c=1938=int ntfs_attr_make_non_resident(struct ntfs_inode *ni, const u32 data_size)\n--\nfs/ntfs/attrib.c-2125-\tif (unlikely(err)) {\nfs/ntfs/attrib.c:2126:\t\tntfs_error(vol-\u003esb, \"Failed to build mapping pairs, error code %i.\",\nfs/ntfs/attrib.c-2127-\t\t\t\terr);\n--\nfs/ntfs/attrib.c-2204-\t\t\tattr_size = arec_size - mp_ofs;\nfs/ntfs/attrib.c:2205:\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-2206-\t\t\t\t\"Failed to undo partial resident to non-resident attribute conversion.  Truncating inode 0x%llx, attribute type 0x%x from %i bytes to %i bytes to maintain metadata consistenc...\n--\nfs/ntfs/attrib.c-2236-\t\tif (ntfs_cluster_free_from_rl(vol, rl) \u003c 0) {\nfs/ntfs/attrib.c:2237:\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-2238-\t\t\t\t\"Failed to release allocated cluster(s) in error code path.  Run chkdsk to recover the lost cluster(s).\");\n--\nfs/ntfs/attrib.c=2274=int ntfs_attr_set(struct ntfs_inode *ni, s64 ofs, s64 cnt, const u8 val)\n--\nfs/ntfs/attrib.c-2288-\t\t\tret = PTR_ERR(folio);\nfs/ntfs/attrib.c:2289:\t\t\tntfs_error(VFS_I(ni)-\u003ei_sb, \"Failed to read a page %lu for attr %#x: %ld\",\nfs/ntfs/attrib.c-2290-\t\t\t\t   index, ni-\u003etype, PTR_ERR(folio));\n--\nfs/ntfs/attrib.c=2395=int ntfs_resident_attr_record_add(struct ntfs_inode *ni, __le32 type,\n--\nfs/ntfs/attrib.c-2424-\tif (!ctx) {\nfs/ntfs/attrib.c:2425:\t\tntfs_error(ni-\u003evol-\u003esb, \"%s: Failed to get search context\",\nfs/ntfs/attrib.c-2426-\t\t\t\t__func__);\n--\nfs/ntfs/attrib.c=2789=int ntfs_attr_add(struct ntfs_inode *ni, __le32 type,\n--\nfs/ntfs/attrib.c-2822-\t\tif (err != -EPERM) {\nfs/ntfs/attrib.c:2823:\t\t\tntfs_error(sb, \"ntfs_attr_can_be_non_resident failed\");\nfs/ntfs/attrib.c-2824-\t\t\tgoto err_out;\n--\nfs/ntfs/attrib.c-2827-\t\tif (!val) {\nfs/ntfs/attrib.c:2828:\t\t\tntfs_error(sb,\nfs/ntfs/attrib.c-2829-\t\t\t\t\"val is mandatory for always resident attributes\");\n--\nfs/ntfs/attrib.c-2832-\t\tif (size \u003e ni-\u003evol-\u003emft_record_size) {\nfs/ntfs/attrib.c:2833:\t\t\tntfs_error(sb, \"Attribute is too big\");\nfs/ntfs/attrib.c-2834-\t\t\treturn -ERANGE;\n--\nfs/ntfs/attrib.c-2847-\t\tif (err != -EPERM) {\nfs/ntfs/attrib.c:2848:\t\t\tntfs_error(sb, \"ntfs_attr_can_be_resident failed\");\nfs/ntfs/attrib.c-2849-\t\t\tgoto err_out;\n--\nfs/ntfs/attrib.c-2885-\tif (err) {\nfs/ntfs/attrib.c:2886:\t\tntfs_error(sb, \"Failed to attach all extents to inode\");\nfs/ntfs/attrib.c-2887-\t\tgoto err_out;\n--\nfs/ntfs/attrib.c-2911-\t\tif (err) {\nfs/ntfs/attrib.c:2912:\t\t\tntfs_error(sb, \"Failed to add attribute list\");\nfs/ntfs/attrib.c-2913-\t\t\tgoto err_out;\n--\nfs/ntfs/attrib.c-2921-\tif (err) {\nfs/ntfs/attrib.c:2922:\t\tntfs_error(sb, \"Failed to allocate extent record\");\nfs/ntfs/attrib.c-2923-\t\tgoto err_out;\n--\nfs/ntfs/attrib.c-2935-\t\t\terr = offset;\nfs/ntfs/attrib.c:2936:\t\t\tntfs_error(sb, \"Failed to add resident attribute\");\nfs/ntfs/attrib.c-2937-\t\t\tgoto free_err_out;\n--\nfs/ntfs/attrib.c-2947-\t\terr = offset;\nfs/ntfs/attrib.c:2948:\t\tntfs_error(sb, \"Failed to add non resident attribute\");\nfs/ntfs/attrib.c-2949-\t\tgoto free_err_out;\n--\nfs/ntfs/attrib.c-2959-\t\terr = PTR_ERR(attr_vi);\nfs/ntfs/attrib.c:2960:\t\tntfs_error(sb, \"Failed to open just added attribute\");\nfs/ntfs/attrib.c-2961-\t\tgoto rm_attr_err_out;\n--\nfs/ntfs/attrib.c-2968-\t\terr = -EIO;\nfs/ntfs/attrib.c:2969:\t\tntfs_error(sb, \"Failed to initialize just added attribute\");\nfs/ntfs/attrib.c-2970-\t\tif (ntfs_attr_rm(attr_ni))\nfs/ntfs/attrib.c:2971:\t\t\tntfs_error(sb, \"Failed to remove just added attribute\");\nfs/ntfs/attrib.c-2972-\t\tiput(attr_vi);\n--\nfs/ntfs/attrib.c-2983-\t\t\t\t\t(struct attr_record *)((u8 *)ni_mrec + offset), 0))\nfs/ntfs/attrib.c:2984:\t\t\tntfs_error(sb, \"Failed to remove just added attribute #2\");\nfs/ntfs/attrib.c-2985-\t\tunmap_mft_record(attr_ni);\n--\nfs/ntfs/attrib.c-2999-\t\t\tif (ntfs_mft_record_free(attr_ni-\u003evol, attr_ni))\nfs/ntfs/attrib.c:3000:\t\t\t\tntfs_error(sb, \"Failed to free MFT record\");\nfs/ntfs/attrib.c-3001-\t\t\tif (attr_ni-\u003enr_extents \u003c 0)\n--\nfs/ntfs/attrib.c=3272=int ntfs_attr_map_whole_runlist(struct ntfs_inode *ni)\n--\nfs/ntfs/attrib.c-3296-\tif (!ctx) {\nfs/ntfs/attrib.c:3297:\t\tntfs_error(sb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-3298-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-3333-\t\t\t\terr = -EIO;\nfs/ntfs/attrib.c:3334:\t\t\t\tntfs_error(sb,\nfs/ntfs/attrib.c-3335-\t\t\t\t\t\"First extent of inode %llu attribute has non-zero lowest_vcn\",\n--\nfs/ntfs/attrib.c-3356-\t\t\terr = -EIO;\nfs/ntfs/attrib.c:3357:\t\t\tntfs_error(sb, \"Inode %llu has corrupt attribute list\",\nfs/ntfs/attrib.c-3358-\t\t\t\t\t(unsigned long long)ni-\u003emft_no);\n--\nfs/ntfs/attrib.c-3362-\tif (!a) {\nfs/ntfs/attrib.c:3363:\t\tntfs_error(sb, \"Couldn't find attribute for runlist mapping\");\nfs/ntfs/attrib.c-3364-\t\tgoto err_out;\n--\nfs/ntfs/attrib.c-3367-\t\terr = -EIO;\nfs/ntfs/attrib.c:3368:\t\tntfs_error(sb,\nfs/ntfs/attrib.c-3369-\t\t\t\"Failed to load full runlist: inode: %llu highest_vcn: 0x%llx last_vcn: 0x%llx\",\n--\nfs/ntfs/attrib.c=3392=int ntfs_attr_record_move_to(struct ntfs_attr_search_ctx *ctx, struct ntfs_inode *ni)\n--\nfs/ntfs/attrib.c-3422-\tif (!nctx) {\nfs/ntfs/attrib.c:3423:\t\tntfs_error(sb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-3424-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c=3482=int ntfs_attr_record_move_away(struct ntfs_attr_search_ctx *ctx, int extra)\n--\nfs/ntfs/attrib.c-3502-\tif (!NInoAttrList(base_ni)) {\nfs/ntfs/attrib.c:3503:\t\tntfs_error(sb, \"Inode %llu has no attrlist\",\nfs/ntfs/attrib.c-3504-\t\t\t\t(unsigned long long)base_ni-\u003emft_no);\n--\nfs/ntfs/attrib.c-3509-\tif (err) {\nfs/ntfs/attrib.c:3510:\t\tntfs_error(sb, \"Couldn't attach extents, inode=%llu\",\nfs/ntfs/attrib.c-3511-\t\t\t(unsigned long long)base_ni-\u003emft_no);\n--\nfs/ntfs/attrib.c-3523-\t\tif (IS_ERR(m)) {\nfs/ntfs/attrib.c:3524:\t\t\tntfs_error(sb, \"Can not map mft record for mft_no %lld\",\nfs/ntfs/attrib.c-3525-\t\t\t\t\t(unsigned long long)ni-\u003emft_no);\n--\nfs/ntfs/attrib.c-3554-\tif (err) {\nfs/ntfs/attrib.c:3555:\t\tntfs_error(sb, \"Couldn't allocate MFT record, err : %d\", err);\nfs/ntfs/attrib.c-3556-\t\treturn err;\n--\nfs/ntfs/attrib.c-3561-\tif (err) {\nfs/ntfs/attrib.c:3562:\t\tntfs_error(sb, \"Couldn't move attribute to MFT record\");\nfs/ntfs/attrib.c-3563-\t\tif (ntfs_mft_record_free(base_ni-\u003evol, ni))\nfs/ntfs/attrib.c:3564:\t\t\tntfs_error(sb, \"Couldn't free empty MFT record\");\nfs/ntfs/attrib.c-3565-\t\telse\n--\nfs/ntfs/attrib.c=3576=static int ntfs_attr_update_meta(struct attr_record *a, struct ntfs_inode *ni,\n--\nfs/ntfs/attrib.c-3621-\t\t\tif (err) {\nfs/ntfs/attrib.c:3622:\t\t\t\tntfs_error(sb, \"Failed to move attribute\");\nfs/ntfs/attrib.c-3623-\t\t\t\tgoto out;\n--\nfs/ntfs/attrib.c-3634-\t\t\terr = -EIO;\nfs/ntfs/attrib.c:3635:\t\t\tntfs_error(sb, \"Mapping pairs space is 0\");\nfs/ntfs/attrib.c-3636-\t\t\tgoto out;\n--\nfs/ntfs/attrib.c=3715=int ntfs_attr_update_mapping_pairs(struct ntfs_inode *ni, s64 from_vcn)\n--\nfs/ntfs/attrib.c-3737-\tif (!NInoNonResident(ni)) {\nfs/ntfs/attrib.c:3738:\t\tntfs_error(sb, \"%s: resident attribute\", __func__);\nfs/ntfs/attrib.c-3739-\t\treturn -EINVAL;\n--\nfs/ntfs/attrib.c-3748-\tif (!ctx) {\nfs/ntfs/attrib.c:3749:\t\tntfs_error(sb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-3750-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-3784-\t\t\t\terr = -EIO;\nfs/ntfs/attrib.c:3785:\t\t\t\tntfs_error(sb, \"Bad runlist\");\nfs/ntfs/attrib.c-3786-\t\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3834-\t\t\terr = mp_size;\nfs/ntfs/attrib.c:3835:\t\t\tntfs_error(sb, \"%s: get MP size failed\", __func__);\nfs/ntfs/attrib.c-3836-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3860-\t\t\t\tif (ntfs_inode_add_attrlist(base_ni)) {\nfs/ntfs/attrib.c:3861:\t\t\t\t\tntfs_error(sb, \"Can not add attrlist\");\nfs/ntfs/attrib.c-3862-\t\t\t\t\treturn -EIO;\n--\nfs/ntfs/attrib.c-3880-\t\t\t\terr = -EIO;\nfs/ntfs/attrib.c:3881:\t\t\t\tntfs_error(sb, \"Failed to resize attribute\");\nfs/ntfs/attrib.c-3882-\t\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3906-\t\tif (!finished_build \u0026\u0026 err != -ENOSPC) {\nfs/ntfs/attrib.c:3907:\t\t\tntfs_error(sb, \"Failed to build mapping pairs\");\nfs/ntfs/attrib.c-3908-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3916-\tif (err \u0026\u0026 err != -ENOENT) {\nfs/ntfs/attrib.c:3917:\t\tntfs_error(sb, \"%s: Attribute lookup failed\", __func__);\nfs/ntfs/attrib.c-3918-\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3939-\t\t} else {\nfs/ntfs/attrib.c:3940:\t\t\tntfs_error(sb, \"Failed to update sizes in base extent\\n\");\nfs/ntfs/attrib.c-3941-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3956-\t\t\tif (err) {\nfs/ntfs/attrib.c:3957:\t\t\t\tntfs_error(sb, \"Could not remove unused attr\");\nfs/ntfs/attrib.c-3958-\t\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3962-\t\tif (err \u0026\u0026 err != -ENOENT) {\nfs/ntfs/attrib.c:3963:\t\t\tntfs_error(sb, \"%s: Attr lookup failed\", __func__);\nfs/ntfs/attrib.c-3964-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3980-\t\tif (err) {\nfs/ntfs/attrib.c:3981:\t\t\tntfs_error(sb, \"Failed to allocate extent record\");\nfs/ntfs/attrib.c-3982-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-3987-\t\tif (IS_ERR(m)) {\nfs/ntfs/attrib.c:3988:\t\t\tntfs_error(sb, \"Could not map new MFT record\");\nfs/ntfs/attrib.c-3989-\t\t\tif (ntfs_mft_record_free(ni-\u003evol, ext_ni))\nfs/ntfs/attrib.c:3990:\t\t\t\tntfs_error(sb, \"Could not free MFT record\");\nfs/ntfs/attrib.c-3991-\t\t\tntfs_inode_close(ext_ni);\n--\nfs/ntfs/attrib.c-4013-\t\t\terr = mp_size;\nfs/ntfs/attrib.c:4014:\t\t\tntfs_error(sb, \"%s: get mp size failed\", __func__);\nfs/ntfs/attrib.c-4015-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-4023-\t\tif (err \u003c 0) {\nfs/ntfs/attrib.c:4024:\t\t\tntfs_error(sb, \"Could not add attribute extent\");\nfs/ntfs/attrib.c-4025-\t\t\tunmap_mft_record(ext_ni);\nfs/ntfs/attrib.c-4026-\t\t\tif (ntfs_mft_record_free(ni-\u003evol, ext_ni))\nfs/ntfs/attrib.c:4027:\t\t\t\tntfs_error(sb, \"Could not free MFT record\");\nfs/ntfs/attrib.c-4028-\t\t\tntfs_inode_close(ext_ni);\n--\nfs/ntfs/attrib.c-4037-\t\tif (err \u003c 0 \u0026\u0026 err != -ENOSPC) {\nfs/ntfs/attrib.c:4038:\t\t\tntfs_error(sb, \"Failed to build MP\");\nfs/ntfs/attrib.c-4039-\t\t\tunmap_mft_record(ext_ni);\nfs/ntfs/attrib.c-4040-\t\t\tif (ntfs_mft_record_free(ni-\u003evol, ext_ni))\nfs/ntfs/attrib.c:4041:\t\t\t\tntfs_error(sb, \"Couldn't free MFT record\");\nfs/ntfs/attrib.c-4042-\t\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c=4071=static int ntfs_attr_make_resident(struct ntfs_inode *ni, struct ntfs_attr_search_ctx *ctx)\n--\nfs/ntfs/attrib.c-4137-\t\t */\nfs/ntfs/attrib.c:4138:\t\tntfs_error(ctx-\u003entfs_ino-\u003evol-\u003esb, \"BUG! Failed to resize attribute record. \");\nfs/ntfs/attrib.c-4139-\t\treturn -EIO;\n--\nfs/ntfs/attrib.c-4166-\tif (err) {\nfs/ntfs/attrib.c:4167:\t\tntfs_error(sb, \"Eeek! Failed to release allocated clusters\");\nfs/ntfs/attrib.c-4168-\t\tntfs_debug(\"Ignoring error and leaving behind wasted clusters.\\n\");\n--\nfs/ntfs/attrib.c=4197=static int ntfs_non_resident_attr_shrink(struct ntfs_inode *ni, const s64 newsize)\n--\nfs/ntfs/attrib.c-4259-\t\tif (!ctx) {\nfs/ntfs/attrib.c:4260:\t\t\tntfs_error(vol-\u003esb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-4261-\t\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-4280-\t\t\tni-\u003erunlist.rl = NULL;\nfs/ntfs/attrib.c:4281:\t\t\tntfs_error(vol-\u003esb, \"Eeek! Run list truncation failed.\\n\");\nfs/ntfs/attrib.c-4282-\t\t\treturn -EIO;\n--\nfs/ntfs/attrib.c-4307-\tif (!ctx) {\nfs/ntfs/attrib.c:4308:\t\tntfs_error(vol-\u003esb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-4309-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-4347-\t\t\tif (err != -EPERM)\nfs/ntfs/attrib.c:4348:\t\t\t\tntfs_error(ni-\u003evol-\u003esb,\nfs/ntfs/attrib.c-4349-\t\t\t\t\t\"Failed to make attribute resident. Leaving as is...\\n\");\n--\nfs/ntfs/attrib.c=4374=static int ntfs_non_resident_attr_expand(struct ntfs_inode *ni, const s64 newsize,\n--\nfs/ntfs/attrib.c-4404-\tif (err\t\u003c 0) {\nfs/ntfs/attrib.c:4405:\t\tntfs_error(sb, \"%s: bounds check failed\", __func__);\nfs/ntfs/attrib.c-4406-\t\treturn err;\n--\nfs/ntfs/attrib.c-4429-\t\tif (err) {\nfs/ntfs/attrib.c:4430:\t\t\tntfs_error(sb, \"ntfs_attr_map_whole_runlist failed\");\nfs/ntfs/attrib.c-4431-\t\t\treturn err;\n--\nfs/ntfs/attrib.c-4535-\t\t\t\t/* Failed, free just allocated clusters. */\nfs/ntfs/attrib.c:4536:\t\t\t\tntfs_error(sb, \"Run list merge failed\");\nfs/ntfs/attrib.c-4537-\t\t\t\tntfs_cluster_free_from_rl(vol, rl);\n--\nfs/ntfs/attrib.c-4603-\t\tni-\u003erunlist.rl = NULL;\nfs/ntfs/attrib.c:4604:\t\tntfs_error(sb, \"Couldn't truncate runlist. Rollback failed\");\nfs/ntfs/attrib.c-4605-\t} else {\n--\nfs/ntfs/attrib.c-4611-\t\tif (ntfs_attr_update_mapping_pairs(ni, 0))\nfs/ntfs/attrib.c:4612:\t\t\tntfs_error(sb, \"Failed to restore old mapping pairs\");\nfs/ntfs/attrib.c-4613-\t\tif (need_lock)\n--\nfs/ntfs/attrib.c=4640=static int ntfs_resident_attr_resize(struct ntfs_inode *attr_ni, const s64 newsize,\n--\nfs/ntfs/attrib.c-4661-\tif (!ctx) {\nfs/ntfs/attrib.c:4662:\t\tntfs_error(sb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-4663-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-4668-\tif (err) {\nfs/ntfs/attrib.c:4669:\t\tntfs_error(sb, \"ntfs_attr_lookup failed\");\nfs/ntfs/attrib.c-4670-\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-4719-\t} else if (err != -ENOSPC \u0026\u0026 err != -EPERM) {\nfs/ntfs/attrib.c:4720:\t\tntfs_error(sb, \"Failed to make attribute non-resident\");\nfs/ntfs/attrib.c-4721-\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-4755-\t\tif (IS_ERR(tvi)) {\nfs/ntfs/attrib.c:4756:\t\t\tntfs_error(sb, \"Couldn't open attribute\");\nfs/ntfs/attrib.c-4757-\t\t\tcontinue;\n--\nfs/ntfs/attrib.c-4772-\tif (err != -ENOENT) {\nfs/ntfs/attrib.c:4773:\t\tntfs_error(sb, \"%s: Attribute lookup failed 1\", __func__);\nfs/ntfs/attrib.c-4774-\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-4793-\t\t\terr = -ENOSPC;\nfs/ntfs/attrib.c:4794:\t\t\tntfs_error(sb,\nfs/ntfs/attrib.c-4795-\t\t\t\t\"Couldn't free space in the MFT record to make attribute list non resident\");\n--\nfs/ntfs/attrib.c-4813-\tif (err) {\nfs/ntfs/attrib.c:4814:\t\tntfs_error(sb, \"%s: Attribute lookup failed 2\", __func__);\nfs/ntfs/attrib.c-4815-\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-4840-\tif (err) {\nfs/ntfs/attrib.c:4841:\t\tntfs_error(sb, \"Couldn't allocate MFT record\");\nfs/ntfs/attrib.c-4842-\t\tgoto put_err_out;\n--\nfs/ntfs/attrib.c-4848-\tif (err) {\nfs/ntfs/attrib.c:4849:\t\tntfs_error(sb, \"Couldn't move attribute to new MFT record\");\nfs/ntfs/attrib.c-4850-\t\terr = -ENOMEM;\n--\nfs/ntfs/attrib.c=5015=int ntfs_attr_map_cluster(struct ntfs_inode *ni, s64 vcn_start, s64 *lcn_start,\n--\nfs/ntfs/attrib.c-5035-\tif (!ctx) {\nfs/ntfs/attrib.c:5036:\t\tntfs_error(vol-\u003esb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-5037-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-5042-\tif (err) {\nfs/ntfs/attrib.c:5043:\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-5044-\t\t\t   \"ntfs_attr_lookup failed, ntfs inode(mft_no : %llu) type : 0x%x, err : %d\",\n--\nfs/ntfs/attrib.c-5050-\tif (IS_ERR(rl)) {\nfs/ntfs/attrib.c:5051:\t\tntfs_error(vol-\u003esb, \"Failed to find run after mapping runlist.\");\nfs/ntfs/attrib.c-5052-\t\terr = PTR_ERR(rl);\n--\nfs/ntfs/attrib.c-5120-\tif (IS_ERR(rl)) {\nfs/ntfs/attrib.c:5121:\t\tntfs_error(vol-\u003esb, \"Failed to merge runlists\");\nfs/ntfs/attrib.c-5122-\t\terr = PTR_ERR(rl);\nfs/ntfs/attrib.c-5123-\t\tif (ntfs_cluster_free_from_rl(vol, rlc))\nfs/ntfs/attrib.c:5124:\t\t\tntfs_error(vol-\u003esb, \"Failed to free hot clusters.\");\nfs/ntfs/attrib.c-5125-\t\tkvfree(rlc);\n--\nfs/ntfs/attrib.c-5146-\t\t\tif (err2 \u003c 0)\nfs/ntfs/attrib.c:5147:\t\t\t\tntfs_error(vol-\u003esb,\nfs/ntfs/attrib.c-5148-\t\t\t\t\t   \"Failed to free cluster allocation. Leaving inconstant metadata.\\n\");\n--\nfs/ntfs/attrib.c=5172=int ntfs_attr_rm(struct ntfs_inode *ni)\n--\nfs/ntfs/attrib.c-5195-\t\tif (!ctx) {\nfs/ntfs/attrib.c:5196:\t\t\tntfs_error(sb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-5197-\t\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-5201-\t\tif (ret \u003c 0)\nfs/ntfs/attrib.c:5202:\t\t\tntfs_error(sb,\nfs/ntfs/attrib.c-5203-\t\t\t\t\"Failed to free cluster allocation. Leaving inconstant metadata.\\n\");\n--\nfs/ntfs/attrib.c-5209-\tif (!ctx) {\nfs/ntfs/attrib.c:5210:\t\tntfs_error(sb, \"%s: Failed to get search context\", __func__);\nfs/ntfs/attrib.c-5211-\t\treturn -ENOMEM;\n--\nfs/ntfs/attrib.c-5216-\t\tif (err) {\nfs/ntfs/attrib.c:5217:\t\t\tntfs_error(sb,\nfs/ntfs/attrib.c-5218-\t\t\t\t\"Failed to remove attribute extent. Leaving inconstant metadata.\\n\");\n--\nfs/ntfs/attrib.c-5224-\tif (err != -ENOENT) {\nfs/ntfs/attrib.c:5225:\t\tntfs_error(sb, \"Attribute lookup failed. Probably leaving inconstant metadata.\\n\");\nfs/ntfs/attrib.c-5226-\t\tret = err;\n--\nfs/ntfs/attrib.c=5232=int ntfs_attr_exist(struct ntfs_inode *ni, const __le32 type, __le16 *name,\n--\nfs/ntfs/attrib.c-5241-\tif (!ctx) {\nfs/ntfs/attrib.c:5242:\t\tntfs_error(ni-\u003evol-\u003esb, \"%s: Failed to get search context\",\nfs/ntfs/attrib.c-5243-\t\t\t\t__func__);\n--\nfs/ntfs/attrib.c=5254=int ntfs_attr_remove(struct ntfs_inode *ni, const __le32 type, __le16 *name,\n--\nfs/ntfs/attrib.c-5268-\t\terr = PTR_ERR(attr_vi);\nfs/ntfs/attrib.c:5269:\t\tntfs_error(ni-\u003evol-\u003esb, \"Failed to open attribute 0x%02x of inode 0x%llx\",\nfs/ntfs/attrib.c-5270-\t\t\t\ttype, (unsigned long long)ni-\u003emft_no);\n--\nfs/ntfs/attrib.c-5276-\tif (err)\nfs/ntfs/attrib.c:5277:\t\tntfs_error(ni-\u003evol-\u003esb, \"Failed to remove attribute 0x%02x of inode 0x%llx\",\nfs/ntfs/attrib.c-5278-\t\t\t\ttype, (unsigned long long)ni-\u003emft_no);\n--\nfs/ntfs/attrib.c=5301=void *ntfs_attr_readall(struct ntfs_inode *ni, const __le32 type,\n--\nfs/ntfs/attrib.c-5322-\t\tbmp_ni-\u003edata_size \u003e ((ni-\u003evol-\u003enr_clusters + 7) \u003e\u003e 3))) {\nfs/ntfs/attrib.c:5323:\t\tntfs_error(sb, \"Invalid attribute data size\");\nfs/ntfs/attrib.c-5324-\t\tret = ERR_PTR(-EIO);\n--\nfs/ntfs/attrib.c-5336-\tif (size != bmp_ni-\u003edata_size) {\nfs/ntfs/attrib.c:5337:\t\tntfs_error(sb, \"ntfs_attr_pread failed\");\nfs/ntfs/attrib.c-5338-\t\tret = size \u003c 0 ? ERR_PTR((int)size) : ERR_PTR(-EIO);\n--\nfs/ntfs/attrib.c=5431=int ntfs_non_resident_attr_collapse_range(struct ntfs_inode *ni, s64 start_vcn, s64 len)\n--\nfs/ntfs/attrib.c-5515-\tif (ret)\nfs/ntfs/attrib.c:5516:\t\tntfs_error(vol-\u003esb, \"Freeing of clusters failed\");\nfs/ntfs/attrib.c-5517-out_ctx:\n--\nfs/ntfs/attrib.c=5526=int ntfs_non_resident_attr_punch_hole(struct ntfs_inode *ni, s64 start_vcn, s64 len)\n--\nfs/ntfs/attrib.c-5575-\tif (ret)\nfs/ntfs/attrib.c:5576:\t\tntfs_error(vol-\u003esb, \"Freeing of clusters failed\");\nfs/ntfs/attrib.c-5577-\n--\nfs/ntfs/attrib.c=5583=int ntfs_attr_fallocate(struct ntfs_inode *ni, loff_t start, loff_t byte_len, bool keep_size)\n--\nfs/ntfs/attrib.c-5744-\t\tif (err)\nfs/ntfs/attrib.c:5745:\t\t\tntfs_error(ni-\u003evol-\u003esb, \"Updating mapping pairs failed\");\nfs/ntfs/attrib.c-5746-\t\telse\n--\nfs/ntfs/attrlist.c=54=int ntfs_attrlist_update(struct ntfs_inode *base_ni)\n--\nfs/ntfs/attrlist.c-80-\t\t\tiput(attr_vi);\nfs/ntfs/attrlist.c:81:\t\t\tntfs_error(base_ni-\u003evol-\u003esb,\nfs/ntfs/attrlist.c-82-\t\t\t\t\t\"Failed to truncate attribute list of inode %#llx\",\n--\nfs/ntfs/attrlist.c-87-\t\tiput(attr_vi);\nfs/ntfs/attrlist.c:88:\t\tntfs_error(base_ni-\u003evol-\u003esb,\nfs/ntfs/attrlist.c-89-\t\t\t   \"Failed to truncate attribute list of inode %#llx\",\n--\nfs/ntfs/attrlist.c-102-\t\tiput(attr_vi);\nfs/ntfs/attrlist.c:103:\t\tntfs_error(base_ni-\u003evol-\u003esb,\nfs/ntfs/attrlist.c-104-\t\t\t   \"Failed to write attribute list of inode %#llx\",\n--\nfs/ntfs/attrlist.c=121=int ntfs_attrlist_entry_add(struct ntfs_inode *ni, struct attr_record *attr)\n--\nfs/ntfs/attrlist.c-167-\t\terr = -ENOMEM;\nfs/ntfs/attrlist.c:168:\t\tntfs_error(ni-\u003evol-\u003esb, \"Failed to get search context\");\nfs/ntfs/attrlist.c-169-\t\tgoto err_out;\n\n"
}

gemini-3.8-flash

null

null

							input: 17110
							output: 29
							thoughts: 15
						

Okay, here's my attempt at summarizing that thought process, keeping in mind I'm speaking to a fellow expert:

**Hunting Down That `ntfs_error` Definition**

Alright, so I'm diving into this code, and I've hit a snag where I need to understand exactly what `ntfs_error` represents. My first instinct, naturally, is to locate its definition. Is it a straightforward declaration, perhaps an enum? Or, more likely given the context, is it a macro? If it *is* a macro, I need to know how it expands. Depending on the codebase, it could be defined right here in this file, or I might need to start digging through include files, potentially working my way through several levels of nested includes until I find the source of truth. Time to put on my investigator hat. Let's start searching!

{
  "Expression": "define ntfs_error",
  "PathPrefix": "fs/ntfs"
}

{
  "Output": "fs/ntfs/debug.h=57=void __ntfs_error(const char *function, struct super_block *sb,\nfs/ntfs/debug.h-58-\t\t  const char *fmt, ...);\nfs/ntfs/debug.h:59:#define ntfs_error(sb, f, a...)\t\t__ntfs_error(__func__, sb, f, ##a)\nfs/ntfs/debug.h-60-\n"
}

gemini-3.8-flash

null

null

							input: 17456
							output: 30
							thoughts: 29
						

Here's my attempt at summarizing the thought process, tailored for an expert audience:

**Debugging NTFS Error Handling**

Okay, so I've hit an NTFS-related issue, and I need to pinpoint the source. My first instinct is to dive into the error handling routines. I'm thinking I need to trace this back. The name `__ntfs_error` is ringing a bell, suggesting this is a core error reporting function within the NTFS driver. I'll need to locate its definition. My best guess is to start by checking `fs/ntfs/debug.c`, since that's often where you'd find debugging-related functions. Alternatively, I'll need to expand my search to include all of the fs/ntfs code if its not defined there. I'll need to verify its definition and how it is being used. From there, I can walk back through the call stack to see where the specific error condition is triggered. Time to get my hands dirty.

{
  "Expression": "void __ntfs_error",
  "PathPrefix": "fs/ntfs"
}

{
  "Output": "fs/ntfs/debug.c=29=void __ntfs_warning(const char *function, const struct super_block *sb,\n--\nfs/ntfs/debug.c-75- */\nfs/ntfs/debug.c:76:void __ntfs_error(const char *function, struct super_block *sb,\nfs/ntfs/debug.c-77-\t\tconst char *fmt, ...)\n--\nfs/ntfs/debug.h=56=extern  __printf(3, 4)\nfs/ntfs/debug.h:57:void __ntfs_error(const char *function, struct super_block *sb,\nfs/ntfs/debug.h-58-\t\t  const char *fmt, ...);\n"
}

gemini-3.8-flash

null

null

							input: 17915
							output: 35
							thoughts: 22
						

Here's my summary, as though I'm reading and processing the provided information:

**Analyzing the NTFS Error Handler**

Okay, let's dive into the guts of the NTFS error handling in the kernel. The text points me directly to the `__ntfs_error` function within `fs/ntfs/debug.c`. This is where the rubber meets the road when things go sideways with the NTFS file system. I need to understand how the system reacts to and attempts to recover from errors encountered during NTFS operations. I'm going to look for the error codes, the logging mechanisms, any recovery attempts, and how it potentially signals errors up the call stack. Understanding this function is crucial for diagnosing and troubleshooting NTFS-related issues, and potentially, contributing to improvements in its stability and robustness. Let's see what we've got.

{
  "File": "fs/ntfs/debug.c",
  "FirstLine": 75,
  "LineCount": 40
}

{
  "Contents": "  75:\t */\n  76:\tvoid __ntfs_error(const char *function, struct super_block *sb,\n  77:\t\t\tconst char *fmt, ...)\n  78:\t{\n  79:\t\tstruct va_format vaf;\n  80:\t\tva_list args;\n  81:\t\tint flen = 0;\n  82:\t\n  83:\t\tif (function)\n  84:\t\t\tflen = strlen(function);\n  85:\t\tva_start(args, fmt);\n  86:\t\tvaf.fmt = fmt;\n  87:\t\tvaf.va = \u0026args;\n  88:\t#ifdef DEBUG\n  89:\t\tif (sb)\n  90:\t\t\tpr_err(\"(device %s): %s(): %pV\\n\",\n  91:\t\t\t       sb-\u003es_id, flen ? function : \"\", \u0026vaf);\n  92:\t\telse\n  93:\t\t\tpr_err(\"%s(): %pV\\n\", flen ? function : \"\", \u0026vaf);\n  94:\t#else\n  95:\t\tif (sb)\n  96:\t\t\tpr_err_ratelimited(\"(device %s): %s(): %pV\\n\",\n  97:\t\t\t       sb-\u003es_id, flen ? function : \"\", \u0026vaf);\n  98:\t\telse\n  99:\t\t\tpr_err_ratelimited(\"%s(): %pV\\n\", flen ? function : \"\", \u0026vaf);\n 100:\t#endif\n 101:\t\tva_end(args);\n 102:\t\n 103:\t\tif (sb)\n 104:\t\t\tntfs_handle_error(sb);\n 105:\t}\n 106:\t\n 107:\t#ifdef DEBUG\n 108:\t\n 109:\t/* If 1, output debug messages, and if 0, don't. */\n 110:\tint debug_msgs;\n 111:\t\n 112:\tvoid __ntfs_debug(const char *file, int line, const char *function,\n 113:\t\t\tconst char *fmt, ...)\n 114:\t{\n"
}

gemini-3.8-flash

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null

							input: 18703
							output: 30
							thoughts: 51
						

Okay, here's my interpretation of that code snippet, delivered as if it's my own thought process:

**Diving into Error Handling**

Alright, let's zero in on those lines, 103 and 104 in the C code. It's a conditional – a rather straightforward `if (sb)` statement. That suggests `sb` is likely a structure, maybe a superblock, filesystem information, or similar. The conditional checks its validity, which makes sense; we wouldn't want to try dereferencing a potentially null pointer. If `sb` *is* valid, the code jumps to that `ntfs_handle_error(sb)` function.

My curiosity is piqued. `ntfs_handle_error()`... that's where the *real* magic happens, or perhaps, the critical error handling. I'm keen to understand precisely how this function addresses potential filesystem inconsistencies or problems. We're obviously in NTFS territory here, so it's probably handling specific NTFS error codes, perhaps attempting recovery, logging the issue, or even initiating a more drastic measure to prevent data corruption. I need to see *what* `ntfs_handle_error` is doing. This will define the overall error handling behavior of the process.

{
  "Expression": "ntfs_handle_error",
  "PathPrefix": "fs/ntfs"
}

{
  "Output": "fs/ntfs/debug.c=76=void __ntfs_error(const char *function, struct super_block *sb,\n--\nfs/ntfs/debug.c-103-\tif (sb)\nfs/ntfs/debug.c:104:\t\tntfs_handle_error(sb);\nfs/ntfs/debug.c-105-}\n--\nfs/ntfs/debug.h=57=void __ntfs_error(const char *function, struct super_block *sb,\n--\nfs/ntfs/debug.h-60-\nfs/ntfs/debug.h:61:void ntfs_handle_error(struct super_block *sb);\nfs/ntfs/debug.h-62-\n--\nfs/ntfs/super.c=326=const struct option_t on_errors_arr[] = {\n--\nfs/ntfs/super.c-332-\nfs/ntfs/super.c:333:void ntfs_handle_error(struct super_block *sb)\nfs/ntfs/super.c-334-{\n"
}

gemini-3.8-flash

null

null

							input: 19332
							output: 36
							thoughts: 23
						

Here's my summary, as if I were thinking these thoughts:

**Diving into the NTFS Error Handling**

Okay, time to get my hands dirty. I want to understand how the NTFS driver handles errors, specifically at the superblock level. Let's start by digging into `fs/ntfs/super.c`. I need to get familiar with `ntfs_handle_error` – that's the function I suspect is central to the error management process for NTFS filesystems. My focus is going to be on understanding its scope: what kinds of errors it addresses, how it's triggered, and what strategies it employs for recovery or reporting. This is where the rubber meets the road, so let's see how they deal with the ugly stuff.

{
  "File": "fs/ntfs/super.c",
  "FirstLine": 330,
  "LineCount": 40
}

{
  "Contents": " 330:\t\t{ 0,\t\t\tNULL }\n 331:\t};\n 332:\t\n 333:\tvoid ntfs_handle_error(struct super_block *sb)\n 334:\t{\n 335:\t\tstruct ntfs_volume *vol = NTFS_SB(sb);\n 336:\t\n 337:\t\tif (sb_rdonly(sb))\n 338:\t\t\treturn;\n 339:\t\n 340:\t\tif (vol-\u003eon_errors == ON_ERRORS_REMOUNT_RO) {\n 341:\t\t\tsb-\u003es_flags |= SB_RDONLY;\n 342:\t\t\tpr_crit(\"(device %s): Filesystem has been set read-only\\n\",\n 343:\t\t\t\tsb-\u003es_id);\n 344:\t\t} else if (vol-\u003eon_errors == ON_ERRORS_PANIC) {\n 345:\t\t\tpanic(\"ntfs: (device %s): panic from previous error\\n\",\n 346:\t\t\t      sb-\u003es_id);\n 347:\t\t} else if (vol-\u003eon_errors == ON_ERRORS_CONTINUE) {\n 348:\t\t\tif (errseq_check(\u0026sb-\u003es_wb_err, vol-\u003ewb_err) == -ENODEV) {\n 349:\t\t\t\tNVolSetShutdown(vol);\n 350:\t\t\t\tvol-\u003ewb_err = sb-\u003es_wb_err;\n 351:\t\t\t}\n 352:\t\t}\n 353:\t}\n 354:\t\n 355:\t/*\n 356:\t * ntfs_write_volume_flags - write new flags to the volume information flags\n 357:\t * @vol:\tntfs volume on which to modify the flags\n 358:\t * @flags:\tnew flags value for the volume information flags\n 359:\t *\n 360:\t * Internal function.  You probably want to use ntfs_{set,clear}_volume_flags()\n 361:\t * instead (see below).\n 362:\t *\n 363:\t * Replace the volume information flags on the volume @vol with the value\n 364:\t * supplied in @flags.  Note, this overwrites the volume information flags, so\n 365:\t * make sure to combine the flags you want to modify with the old flags and use\n 366:\t * the result when calling ntfs_write_volume_flags().\n 367:\t *\n 368:\t * Return 0 on success and -errno on error.\n 369:\t */\n"
}

gemini-3.8-flash

null

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							input: 20214
							output: 32
							thoughts: 1052
						

**Analyzing the NTFS Read-Only Mount Protection**

Okay, so I see what's happening here. The code is designed to prevent a kernel panic during NTFS mount when `errors=panic` is configured. The core issue is that, when calling `check_windows_hibernation_status(vol)` during the mount process, internal calls to `ntfs_error()`—which, if `!sb_rdonly(sb)`, results in `ntfs_handle_error(sb)` getting called, and in the "panic" case, well, it panics the kernel. Previously, if something went wrong during this hibernation check or an internal lookup failed, we could end up panicking during the mount itself, which is obviously undesirable.

This patch addresses that by temporarily setting the superblock to read-only before calling `check_windows_hibernation_status`. This means that if `ntfs_error()` *is* called during the check, the panic won't happen because `sb_rdonly(sb)` is now true, avoiding the panic, and falling back on a read-only mount is a safer outcome in the event of errors detected. The patch then manages the read-only flag, based on the outcome of `check_windows_hibernation_status`. The `temporary_ro` variable acts as a gate to re-enable read-write functionality if no error had occurred.

Now, I need to make sure this fix doesn't introduce any new security vulnerabilities, particularly related to uninitialized memory access. Let's break it down:

1.  **No User-Space Interaction:** This patch doesn't involve any copying of kernel data to user space. No `copy_to_user`, `put_user`, netlink, ioctl, sockets, or BPF buffers are involved. So, no risk there.

2.  **Explicit Initialization:** All variables in this patch seem properly initialized. `temporary_ro` is initialized to `false`, and `err` is assigned the return value of the function call. The `sb->s_flags` and `vol` fields are already existing and used in the code prior to the fix.

3.  **No Complex Data Structure Allocations:** The patch doesn't allocate any new data structures or change existing data structures.

4.  **No Buffer Manipulation:** There's no modification of buffers, lengths, or bounds checks that could lead to reading uninitialized bytes.

So, at a glance, this patch looks safe from a memory safety perspective. I should take a look at the code of `check_windows_hibernation_status` just to double check that function itself. However, based on the code provided, I'm confident that this fix is a good step towards preventing kernel panics during NTFS mounts while not introducing new security risks.

{
  "Expression": "check_windows_hibernation_status",
  "PathPrefix": "fs/ntfs"
}

{
  "Output": "fs/ntfs/super.c=1090=static int load_and_check_logfile(struct ntfs_volume *vol,\n--\nfs/ntfs/super.c-1114-/*\nfs/ntfs/super.c:1115: * check_windows_hibernation_status - check if Windows is suspended on a volume\nfs/ntfs/super.c-1116- * @vol:\tntfs super block of device to check\n--\nfs/ntfs/super.c-1137- */\nfs/ntfs/super.c:1138:static int check_windows_hibernation_status(struct ntfs_volume *vol)\nfs/ntfs/super.c-1139-{\n--\nfs/ntfs/super.c=1399=static bool load_system_files(struct ntfs_volume *vol)\n--\nfs/ntfs/super.c-1592-\t}\nfs/ntfs/super.c:1593:\terr = check_windows_hibernation_status(vol);\nfs/ntfs/super.c-1594-\tif (temporary_ro \u0026\u0026 !err \u0026\u0026 !NVolErrors(vol))\n"
}

gemini-3.8-flash

null

null

							input: 22192
							output: 37
							thoughts: 20
						

Here's my attempt at summarizing the thought process, tailored for an expert audience:

**Hibernation Check: A Quick Sanity Check**

Alright, before we proceed further, I think it's prudent to just quickly scan the `check_windows_hibernation_status` function. It's probably overkill, given the existing context and my understanding of the system, but a brief glance can't hurt. This is just a quick sanity check to ensure there's nothing glaringly obvious that I'm missing – a subtle edge case, perhaps a dependency I hadn't considered, or a minor incompatibility with the rest of the workflow. We've likely covered all the bases, but it never hurts to verify the assumptions are aligned with the implementation at the code level. It's always beneficial to review the underlying functionality directly, even if the high-level design seems sound. This is about minimizing risk and ensuring robustness, given the potential consequences of misinterpreting the hibernation state. Let's make sure our detection logic is robust!

{
  "File": "fs/ntfs/super.c",
  "FirstLine": 1138,
  "LineCount": 70
}

{
  "Contents": "1138:\tstatic int check_windows_hibernation_status(struct ntfs_volume *vol)\n1139:\t{\n1140:\t\tstatic const __le16 hiberfil[13] = { cpu_to_le16('h'),\n1141:\t\t\t\tcpu_to_le16('i'), cpu_to_le16('b'),\n1142:\t\t\t\tcpu_to_le16('e'), cpu_to_le16('r'),\n1143:\t\t\t\tcpu_to_le16('f'), cpu_to_le16('i'),\n1144:\t\t\t\tcpu_to_le16('l'), cpu_to_le16('.'),\n1145:\t\t\t\tcpu_to_le16('s'), cpu_to_le16('y'),\n1146:\t\t\t\tcpu_to_le16('s'), 0 };\n1147:\t\tu64 mref;\n1148:\t\tstruct inode *vi;\n1149:\t\tstruct folio *folio;\n1150:\t\tu32 *kaddr, *kend, *start_addr = NULL;\n1151:\t\tstruct ntfs_name *name = NULL;\n1152:\t\tint ret = 1;\n1153:\t\n1154:\t\tntfs_debug(\"Entering.\");\n1155:\t\t/*\n1156:\t\t * Find the inode number for the hibernation file by looking up the\n1157:\t\t * filename hiberfil.sys in the root directory.\n1158:\t\t */\n1159:\t\tinode_lock(vol-\u003eroot_ino);\n1160:\t\tmref = ntfs_lookup_inode_by_name(NTFS_I(vol-\u003eroot_ino), hiberfil, 12,\n1161:\t\t\t\t\u0026name);\n1162:\t\tinode_unlock(vol-\u003eroot_ino);\n1163:\t\tkfree(name);\n1164:\t\tif (IS_ERR_MREF(mref)) {\n1165:\t\t\tret = MREF_ERR(mref);\n1166:\t\t\t/* If the file does not exist, Windows is not hibernated. */\n1167:\t\t\tif (ret == -ENOENT) {\n1168:\t\t\t\tntfs_debug(\"hiberfil.sys not present.  Windows is not hibernated on the volume.\");\n1169:\t\t\t\treturn 0;\n1170:\t\t\t}\n1171:\t\t\t/* A real error occurred. */\n1172:\t\t\tntfs_error(vol-\u003esb, \"Failed to find inode number for hiberfil.sys.\");\n1173:\t\t\treturn ret;\n1174:\t\t}\n1175:\t\t/* Get the inode. */\n1176:\t\tvi = ntfs_iget(vol-\u003esb, MREF(mref));\n1177:\t\tif (IS_ERR(vi)) {\n1178:\t\t\tif (!IS_ERR(vi))\n1179:\t\t\t\tiput(vi);\n1180:\t\t\tntfs_error(vol-\u003esb, \"Failed to load hiberfil.sys.\");\n1181:\t\t\treturn IS_ERR(vi) ? PTR_ERR(vi) : -EIO;\n1182:\t\t}\n1183:\t\tif (unlikely(i_size_read(vi) \u003c NTFS_HIBERFIL_HEADER_SIZE)) {\n1184:\t\t\tntfs_debug(\"hiberfil.sys is smaller than 4kiB (0x%llx).  Windows is hibernated on the volume.  This is not the system volume.\",\n1185:\t\t\t\t\ti_size_read(vi));\n1186:\t\t\tgoto iput_out;\n1187:\t\t}\n1188:\t\n1189:\t\tfolio = read_mapping_folio(vi-\u003ei_mapping, 0, NULL);\n1190:\t\tif (IS_ERR(folio)) {\n1191:\t\t\tntfs_error(vol-\u003esb, \"Failed to read from hiberfil.sys.\");\n1192:\t\t\tret = PTR_ERR(folio);\n1193:\t\t\tgoto iput_out;\n1194:\t\t}\n1195:\t\tstart_addr = (u32 *)kmap_local_folio(folio, 0);\n1196:\t\tkaddr = start_addr;\n1197:\t\tif (*(__le32 *)kaddr == cpu_to_le32(0x72626968)/*'hibr'*/) {\n1198:\t\t\tntfs_debug(\"Magic \\\"hibr\\\" found in hiberfil.sys.  Windows is hibernated on the volume.  This is the system volume.\");\n1199:\t\t\tgoto unm_iput_out;\n1200:\t\t}\n1201:\t\tkend = kaddr + NTFS_HIBERFIL_HEADER_SIZE/sizeof(*kaddr);\n1202:\t\tdo {\n1203:\t\t\tif (unlikely(*kaddr)) {\n1204:\t\t\t\tntfs_debug(\"hiberfil.sys is larger than 4kiB (0x%llx), does not contain the \\\"hibr\\\" magic, and does not have a zero header.  Windows is hibernated on the volume.  This is not the system volume.\",\n1205:\t\t\t\t\t\ti_size_read(vi));\n1206:\t\t\t\tgoto unm_iput_out;\n1207:\t\t\t}\n"
}

gemini-3.8-flash

null

null

							input: 23822
							output: 191
							thoughts: 443
						

**My Assessment of the Patch's Safety**

Okay, this is pretty clear-cut. The patch introduces a simple control flow mechanism around the `SB_RDONLY` mount flag, specifically for hibernation handling. It's all about managing read-only status and error conditions.

Here's the breakdown, as I see it: We've got a `bool temporary_ro = false;` initialized on the stack. The patch temporarily sets `SB_RDONLY`, checks the hibernation status, then *potentially* reverts the read-only flag. If an error happens, `SB_RDONLY` stays set and an error is recorded, and a message will print if the mount remains read-only.

Crucially, this patch *doesn't* do anything that could introduce uninitialized memory issues. We're not allocating new buffers, reading uninitialized variables, copying uninitialized memory to user space, or messing with buffer sizes. This is purely flag manipulation based on error checking.

Therefore, the risk of exposing uninitialized memory or causing a kernel-to-user information leak is negligible. This means we don't need to involve KMSAN (Kernel Memory Sanitizer) and can confidently mark `NeedsKMSAN=false`. Standard testing and KASAN (Kernel Address Sanitizer) will be sufficient to catch any potential issues.

Let's quickly recap the KASAN vs KMSAN reasoning: KASAN covers out-of-bounds reads/writes, use-after-free, etc., while KMSAN specifically targets uninitialized memory reads and kernel-to-user leaks. This patch touches mount flags during hibernation in `load_system_files()`. The new variable is a stack boolean initialized to false, no heap allocations or structures sent to user space were changed, no uninitialized memory could be exposed as a result of these changes. Thus, standard testing/KASAN is sufficient and a dedicated KMSAN session is not justified.

Right, I'm comfortable with this. Time to call `set-results`.

{
  "KMSANReasoning": "The patch modifies NTFS mount logic in `load_system_files()` to temporarily set `SB_RDONLY` while checking Windows hibernation status (`check_windows_hibernation_status()`). This prevents `ntfs_error()` from prematurely triggering a panic when `errors=panic` mount option is used.\n\nThe only new local variable introduced is `bool temporary_ro = false;`, which is explicitly initialized. The changes only adjust superblock flags (`sb-\u003es_flags`) and control flow around error reporting and read-only fallback. There are no allocations of uninitialized memory, no structures copied to user space, and no alterations to data lengths, buffer boundaries, or uninitialized data access paths. Therefore, no uninitialized memory risks are introduced or exposed, and a dedicated KMSAN session is not needed.",
  "NeedsKMSAN": false
}

{
  "KMSANReasoning": "The patch modifies NTFS mount logic in `load_system_files()` to temporarily set `SB_RDONLY` while checking Windows hibernation status (`check_windows_hibernation_status()`). This prevents `ntfs_error()` from prematurely triggering a panic when `errors=panic` mount option is used.\n\nThe only new local variable introduced is `bool temporary_ro = false;`, which is explicitly initialized. The changes only adjust superblock flags (`sb-\u003es_flags`) and control flow around error reporting and read-only fallback. There are no allocations of uninitialized memory, no structures copied to user space, and no alterations to data lengths, buffer boundaries, or uninitialized data access paths. Therefore, no uninitialized memory risks are introduced or exposed, and a dedicated KMSAN session is not needed.",
  "NeedsKMSAN": false
}