AI Trajectory

Trajectory: (Expand/Collapse All)
Seq	Timestamp	Type	Name	Duration
0/0	2026/10/13 22:29	flow	patch-triage	3m Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "KMSANReasoning": "", "NeedsKMSAN": false, "Reasoning": "The patch modifies drivers/power/supply/qcom_battmgr.c, which is a Qualcomm-specific PMIC GLINK battery manager driver. It binds to an auxiliary device instantiated by the pmic_glink platform driver, which relies on Qualcomm ARM64 SoC device trees and communication over Qualcomm GLINK/RPMSG with the ADSP coprocessor. On the target architecture (amd64), as well as in standard QEMU/GCE virtualized environments, the requisite hardware and coprocessor firmware are not present or emulated, making the modified code structurally unreachable.", "WorthFuzzing": false }
1/1	2026/10/13 22:29	action	read-patch-diff	0m Args: null Results: { "PatchDiff": "commit 8daed3ed6dedc3419779751f17907e43646421a0\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Tue Oct 13 22:29:43 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/drivers/power/supply/qcom_battmgr.c b/drivers/power/supply/qcom_battmgr.c\nindex a7237ba09be12..4ca3409819229 100644\n--- a/drivers/power/supply/qcom_battmgr.c\n+++ b/drivers/power/supply/qcom_battmgr.c\n@@ -1255,6 +1255,23 @@ static unsigned int qcom_battmgr_sc8280xp_convert_temp(unsigned int temperature)\n \treturn DIV_ROUND_CLOSEST(temperature, 10);\n }\n \n+/\n+ The charger supplies' online state comes from the battery status response,\n+ * and the firmware sends no notification of its own when it changes, so\n+ * announce the change here. A supply that is not registered yet announces its\n+ * state when it is.\n+ /\n+static void qcom_battmgr_sc8280xp_set_online(struct power_supply psy,\n+\t\t\t\t\t bool online, bool value)\n+{\n+\tif (online == value)\n+\t\treturn;\n+\n+\tonline = value;\n+\tif (psy)\n+\t\tpower_supply_changed(psy);\n+}\n+\n static void qcom_battmgr_sc8280xp_callback(struct qcom_battmgr battmgr,\n \t\t\t\t\t const struct qcom_battmgr_message resp,\n \t\t\t\t\t size_t len)\n@@ -1324,9 +1341,12 @@ static void qcom_battmgr_sc8280xp_callback(struct qcom_battmgr battmgr,\n \t\tbattmgr-\u003estatus.temperature = qcom_battmgr_sc8280xp_convert_temp(le32_to_cpu(resp-\u003estatus.temperature));\n \n \t\tsource = le32_to_cpu(resp-\u003estatus.charging_source);\n-\t\tbattmgr-\u003eac.online = source == BATTMGR_CHARGING_SOURCE_AC;\n-\t\tbattmgr-\u003eusb.online = source == BATTMGR_CHARGING_SOURCE_USB;\n-\t\tbattmgr-\u003ewireless.online = source == BATTMGR_CHARGING_SOURCE_WIRELESS;\n+\t\tqcom_battmgr_sc8280xp_set_online(battmgr-\u003eac_psy, \u0026battmgr-\u003eac.online,\n+\t\t\t\t\t\t source == BATTMGR_CHARGING_SOURCE_AC);\n+\t\tqcom_battmgr_sc8280xp_set_online(battmgr-\u003eusb_psy, \u0026battmgr-\u003eusb.online,\n+\t\t\t\t\t\t source == BATTMGR_CHARGING_SOURCE_USB);\n+\t\tqcom_battmgr_sc8280xp_set_online(battmgr-\u003ewls_psy, \u0026battmgr-\u003ewireless.online,\n+\t\t\t\t\t\t source == BATTMGR_CHARGING_SOURCE_WIRELESS);\n \t\tif (battmgr-\u003einfo.last_full_capacity != 0) {\n \t\t\t/\n \t\t\t 100 * battmgr-\u003estatus.capacity can overflow a 32bit\n" }
2/1	2026/10/13 22:29	agent	patch-evaluator	3m Model: core Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch modifies drivers/power/supply/qcom_battmgr.c, which is a Qualcomm-specific PMIC GLINK battery manager driver. It binds to an auxiliary device instantiated by the pmic_glink platform driver, which relies on Qualcomm ARM64 SoC device trees and communication over Qualcomm GLINK/RPMSG with the ADSP coprocessor. On the target architecture (amd64), as well as in standard QEMU/GCE virtualized environments, the requisite hardware and coprocessor firmware are not present or emulated, making the modified code structurally unreachable.", "WorthFuzzing": false } Instruction: 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. Prompt: Target architecture: amd64 For your convenience, here is the diff of the changes: commit 8daed3ed6dedc3419779751f17907e43646421a0 Author: syz-cluster <triage@syzkaller.com> Date: Tue Oct 13 22:29:43 2026 +0000 syz-cluster: applied patch under review diff --git a/drivers/power/supply/qcom_battmgr.c b/drivers/power/supply/qcom_battmgr.c index a7237ba09be12..4ca3409819229 100644 --- a/drivers/power/supply/qcom_battmgr.c +++ b/drivers/power/supply/qcom_battmgr.c @@ -1255,6 +1255,23 @@ static unsigned int qcom_battmgr_sc8280xp_convert_temp(unsigned int temperature) return DIV_ROUND_CLOSEST(temperature, 10); } +/* + * The charger supplies' online state comes from the battery status response, + * and the firmware sends no notification of its own when it changes, so + * announce the change here. A supply that is not registered yet announces its + * state when it is. + / +static void qcom_battmgr_sc8280xp_set_online(struct power_supply psy, + bool online, bool value) +{ + if (online == value) + return; + + online = value; + if (psy) + power_supply_changed(psy); +} + static void qcom_battmgr_sc8280xp_callback(struct qcom_battmgr battmgr, const struct qcom_battmgr_message resp, size_t len) @@ -1324,9 +1341,12 @@ static void qcom_battmgr_sc8280xp_callback(struct qcom_battmgr battmgr, battmgr->status.temperature = qcom_battmgr_sc8280xp_convert_temp(le32_to_cpu(resp->status.temperature)); source = le32_to_cpu(resp->status.charging_source); - battmgr->ac.online = source == BATTMGR_CHARGING_SOURCE_AC; - battmgr->usb.online = source == BATTMGR_CHARGING_SOURCE_USB; - battmgr->wireless.online = source == BATTMGR_CHARGING_SOURCE_WIRELESS; + qcom_battmgr_sc8280xp_set_online(battmgr->ac_psy, &battmgr->ac.online, + source == BATTMGR_CHARGING_SOURCE_AC); + qcom_battmgr_sc8280xp_set_online(battmgr->usb_psy, &battmgr->usb.online, + source == BATTMGR_CHARGING_SOURCE_USB); + qcom_battmgr_sc8280xp_set_online(battmgr->wls_psy, &battmgr->wireless.online, + source == BATTMGR_CHARGING_SOURCE_WIRELESS); if (battmgr->info.last_full_capacity != 0) { /* * 100 * battmgr->status.capacity can overflow a 32bit
3/2	2026/10/13 22:29	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 3548 output: 29 thoughts: 112 Thoughts: Analyzing the QCOM Battery Manager Driver Patch Alright, let's dive into this. The first step is always to understand the scope of the change, so I need to analyze this patch to understand what was modified. Ah, the file is `drivers/power/supply/qcom_battmgr.c`. Okay, now we need to understand what this driver does. I'll need to check the file and its associated Kconfig entry to determine the underlying hardware or platform it manages. Given the context, I think this is related to a battery management system. The target architecture is amd64. While the context might not directly impact the code itself, it can be useful for debugging or understanding potential architecture-specific optimizations. Finally, I'll need to actually see the code. I'll use `grepper` or `read-file` to get the contents of `drivers/power/supply/qcom_battmgr.c`. From there, I can begin my detailed inspection, looking for the specific changes, their potential impact, and if they align with best practices and the overall system design. Let's see what we've got.
4/2	2026/10/13 22:30	tool	grepper	0m Args: { "Expression": "BATTMGR", "PathPrefixes": [ "drivers/power/supply" ] } Results: { "Output": "\nFull output is too long, showing 200 out of 313 lines.\nUse more precise expression or PathPrefixes if possible.\n\nNumber of matching lines per file (3 files in total):\ndrivers/power/supply/Kconfig:1\ndrivers/power/supply/Makefile:1\ndrivers/power/supply/qcom_battmgr.c:97\n\ndrivers/power/supply/Kconfig=204=config BATTERY_PMU\n--\ndrivers/power/supply/Kconfig-210-\ndrivers/power/supply/Kconfig:211:config BATTERY_QCOM_BATTMGR\ndrivers/power/supply/Kconfig-212-\ttristate \"Qualcomm PMIC GLINK battery manager support\"\n--\ndrivers/power/supply/Makefile=39=obj-$(CONFIG_BATTERY_PMU)\t+= pmu_battery.o\ndrivers/power/supply/Makefile:40:obj-$(CONFIG_BATTERY_QCOM_BATTMGR)\t+= qcom_battmgr.o\ndrivers/power/supply/Makefile-41-obj-$(CONFIG_BATTERY_OLPC)\t+= olpc_battery.o\n--\ndrivers/power/supply/qcom_battmgr.c-19-\ndrivers/power/supply/qcom_battmgr.c:20:#define BATTMGR_CHEMISTRY_LEN\t4\ndrivers/power/supply/qcom_battmgr.c:21:#define BATTMGR_STRING_LEN\t128\ndrivers/power/supply/qcom_battmgr.c-22-\ndrivers/power/supply/qcom_battmgr.c=23=enum qcom_battmgr_variant {\ndrivers/power/supply/qcom_battmgr.c:24:\tQCOM_BATTMGR_SC8280XP,\ndrivers/power/supply/qcom_battmgr.c:25:\tQCOM_BATTMGR_SM8350,\ndrivers/power/supply/qcom_battmgr.c:26:\tQCOM_BATTMGR_SM8550,\ndrivers/power/supply/qcom_battmgr.c:27:\tQCOM_BATTMGR_X1E80100,\ndrivers/power/supply/qcom_battmgr.c-28-};\ndrivers/power/supply/qcom_battmgr.c-29-\ndrivers/power/supply/qcom_battmgr.c:30:#define BATTMGR_BAT_STATUS\t\t0x1\ndrivers/power/supply/qcom_battmgr.c-31-\ndrivers/power/supply/qcom_battmgr.c:32:#define BATTMGR_REQUEST_NOTIFICATION\t0x4\ndrivers/power/supply/qcom_battmgr.c-33-\ndrivers/power/supply/qcom_battmgr.c:34:#define BATTMGR_NOTIFICATION\t\t0x7\ndrivers/power/supply/qcom_battmgr.c-35-#define NOTIF_BAT_PROPERTY\t\t0x30\n--\ndrivers/power/supply/qcom_battmgr.c-41-\ndrivers/power/supply/qcom_battmgr.c:42:#define BATTMGR_BAT_INFO\t\t0x9\ndrivers/power/supply/qcom_battmgr.c-43-\ndrivers/power/supply/qcom_battmgr.c:44:#define BATTMGR_BAT_DISCHARGE_TIME\t0xc\ndrivers/power/supply/qcom_battmgr.c-45-\ndrivers/power/supply/qcom_battmgr.c:46:#define BATTMGR_BAT_CHARGE_TIME\t\t0xd\ndrivers/power/supply/qcom_battmgr.c-47-\ndrivers/power/supply/qcom_battmgr.c:48:#define BATTMGR_BAT_PROPERTY_GET\t0x30\ndrivers/power/supply/qcom_battmgr.c:49:#define BATTMGR_BAT_PROPERTY_SET\t0x31\ndrivers/power/supply/qcom_battmgr.c-50-#define BATT_STATUS\t\t\t0\n--\ndrivers/power/supply/qcom_battmgr.c-77-\ndrivers/power/supply/qcom_battmgr.c:78:#define BATTMGR_USB_PROPERTY_GET\t0x32\ndrivers/power/supply/qcom_battmgr.c:79:#define BATTMGR_USB_PROPERTY_SET\t0x33\ndrivers/power/supply/qcom_battmgr.c-80-#define USB_ONLINE\t\t\t0\n--\ndrivers/power/supply/qcom_battmgr.c-90-\ndrivers/power/supply/qcom_battmgr.c:91:#define BATTMGR_WLS_PROPERTY_GET\t0x34\ndrivers/power/supply/qcom_battmgr.c:92:#define BATTMGR_WLS_PROPERTY_SET\t0x35\ndrivers/power/supply/qcom_battmgr.c-93-#define WLS_ONLINE\t\t\t0\n--\ndrivers/power/supply/qcom_battmgr.c-100-\ndrivers/power/supply/qcom_battmgr.c:101:#define BATTMGR_CHG_CTRL_LIMIT_EN\t0x48\ndrivers/power/supply/qcom_battmgr.c-102-#define CHARGE_CTRL_START_THR_MIN\t50\n--\ndrivers/power/supply/qcom_battmgr.c=149=struct qcom_battmgr_message {\n--\ndrivers/power/supply/qcom_battmgr.c-158-\t\t\t__le32 property;\ndrivers/power/supply/qcom_battmgr.c:159:\t\t\tchar model[BATTMGR_STRING_LEN];\ndrivers/power/supply/qcom_battmgr.c-160-\t\t} strval;\n--\ndrivers/power/supply/qcom_battmgr.c-194-\t\t\t__le32 capabilities;\ndrivers/power/supply/qcom_battmgr.c:195:\t\t\tchar model_number[BATTMGR_STRING_LEN];\ndrivers/power/supply/qcom_battmgr.c:196:\t\t\tchar serial_number[BATTMGR_STRING_LEN];\ndrivers/power/supply/qcom_battmgr.c:197:\t\t\tchar battery_type[BATTMGR_STRING_LEN];\ndrivers/power/supply/qcom_battmgr.c:198:\t\t\tchar oem_info[BATTMGR_STRING_LEN];\ndrivers/power/supply/qcom_battmgr.c:199:\t\t\tchar battery_chemistry[BATTMGR_CHEMISTRY_LEN];\ndrivers/power/supply/qcom_battmgr.c:200:\t\t\tchar uid[BATTMGR_STRING_LEN];\ndrivers/power/supply/qcom_battmgr.c-201-\t\t\t__le32 critical_bias;\n--\ndrivers/power/supply/qcom_battmgr.c-238-\ndrivers/power/supply/qcom_battmgr.c:239:#define BATTMGR_CHARGING_SOURCE_AC\t1\ndrivers/power/supply/qcom_battmgr.c:240:#define BATTMGR_CHARGING_SOURCE_USB\t2\ndrivers/power/supply/qcom_battmgr.c:241:#define BATTMGR_CHARGING_SOURCE_WIRELESS 3\ndrivers/power/supply/qcom_battmgr.c-242-\ndrivers/power/supply/qcom_battmgr.c=243=enum qcom_battmgr_unit {\ndrivers/power/supply/qcom_battmgr.c:244:\tQCOM_BATTMGR_UNIT_mWh = 0,\ndrivers/power/supply/qcom_battmgr.c:245:\tQCOM_BATTMGR_UNIT_mAh = 1\ndrivers/power/supply/qcom_battmgr.c-246-};\n--\ndrivers/power/supply/qcom_battmgr.c=248=struct qcom_battmgr_info {\n--\ndrivers/power/supply/qcom_battmgr.c-262-\tunsigned int charge_ctrl_end;\ndrivers/power/supply/qcom_battmgr.c:263:\tchar model_number[BATTMGR_STRING_LEN];\ndrivers/power/supply/qcom_battmgr.c:264:\tchar serial_number[BATTMGR_STRING_LEN];\ndrivers/power/supply/qcom_battmgr.c:265:\tchar oem_info[BATTMGR_STRING_LEN];\ndrivers/power/supply/qcom_battmgr.c-266-\tunsigned char technology;\n--\ndrivers/power/supply/qcom_battmgr.c=364=static int qcom_battmgr_request_property(struct qcom_battmgr battmgr, int opcode,\n--\ndrivers/power/supply/qcom_battmgr.c-367-\tstruct qcom_battmgr_property_request request = {\ndrivers/power/supply/qcom_battmgr.c:368:\t\t.hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),\ndrivers/power/supply/qcom_battmgr.c-369-\t\t.hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP),\n--\ndrivers/power/supply/qcom_battmgr.c=379=static int qcom_battmgr_update_status(struct qcom_battmgr battmgr)\n--\ndrivers/power/supply/qcom_battmgr.c-381-\tstruct qcom_battmgr_update_request request = {\ndrivers/power/supply/qcom_battmgr.c:382:\t\t.hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),\ndrivers/power/supply/qcom_battmgr.c-383-\t\t.hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP),\ndrivers/power/supply/qcom_battmgr.c:384:\t\t.hdr.opcode = cpu_to_le32(BATTMGR_BAT_STATUS),\ndrivers/power/supply/qcom_battmgr.c-385-\t\t.battery_id = cpu_to_le32(0),\n--\ndrivers/power/supply/qcom_battmgr.c=391=static int qcom_battmgr_update_info(struct qcom_battmgr battmgr)\n--\ndrivers/power/supply/qcom_battmgr.c-393-\tstruct qcom_battmgr_update_request request = {\ndrivers/power/supply/qcom_battmgr.c:394:\t\t.hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),\ndrivers/power/supply/qcom_battmgr.c-395-\t\t.hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP),\ndrivers/power/supply/qcom_battmgr.c:396:\t\t.hdr.opcode = cpu_to_le32(BATTMGR_BAT_INFO),\ndrivers/power/supply/qcom_battmgr.c-397-\t\t.battery_id = cpu_to_le32(0),\n--\ndrivers/power/supply/qcom_battmgr.c=403=static int qcom_battmgr_update_charge_time(struct qcom_battmgr battmgr)\n--\ndrivers/power/supply/qcom_battmgr.c-405-\tstruct qcom_battmgr_charge_time_request request = {\ndrivers/power/supply/qcom_battmgr.c:406:\t\t.hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),\ndrivers/power/supply/qcom_battmgr.c-407-\t\t.hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP),\ndrivers/power/supply/qcom_battmgr.c:408:\t\t.hdr.opcode = cpu_to_le32(BATTMGR_BAT_CHARGE_TIME),\ndrivers/power/supply/qcom_battmgr.c-409-\t\t.battery_id = cpu_to_le32(0),\n--\ndrivers/power/supply/qcom_battmgr.c=416=static int qcom_battmgr_update_discharge_time(struct qcom_battmgr battmgr)\n--\ndrivers/power/supply/qcom_battmgr.c-418-\tstruct qcom_battmgr_discharge_time_request request = {\ndrivers/power/supply/qcom_battmgr.c:419:\t\t.hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),\ndrivers/power/supply/qcom_battmgr.c-420-\t\t.hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP),\ndrivers/power/supply/qcom_battmgr.c:421:\t\t.hdr.opcode = cpu_to_le32(BATTMGR_BAT_DISCHARGE_TIME),\ndrivers/power/supply/qcom_battmgr.c-422-\t\t.battery_id = cpu_to_le32(0),\n--\ndrivers/power/supply/qcom_battmgr.c=455=static int qcom_battmgr_bat_sm8350_update(struct qcom_battmgr battmgr,\n--\ndrivers/power/supply/qcom_battmgr.c-466-\tmutex_lock(\u0026battmgr-\u003elock);\ndrivers/power/supply/qcom_battmgr.c:467:\tret = qcom_battmgr_request_property(battmgr, BATTMGR_BAT_PROPERTY_GET, prop, 0);\ndrivers/power/supply/qcom_battmgr.c-468-\tmutex_unlock(\u0026battmgr-\u003elock);\n--\ndrivers/power/supply/qcom_battmgr.c=512=static int qcom_battmgr_bat_get_property(struct power_supply psy,\n--\ndrivers/power/supply/qcom_battmgr.c-522-\ndrivers/power/supply/qcom_battmgr.c:523:\tif (battmgr-\u003evariant == QCOM_BATTMGR_SC8280XP \|\|\ndrivers/power/supply/qcom_battmgr.c:524:\t battmgr-\u003evariant == QCOM_BATTMGR_X1E80100)\ndrivers/power/supply/qcom_battmgr.c-525-\t\tret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);\n--\ndrivers/power/supply/qcom_battmgr.c-568-\tcase POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:\ndrivers/power/supply/qcom_battmgr.c:569:\t\tif (unit != QCOM_BATTMGR_UNIT_mAh)\ndrivers/power/supply/qcom_battmgr.c-570-\t\t\treturn -ENODATA;\n--\ndrivers/power/supply/qcom_battmgr.c-573-\tcase POWER_SUPPLY_PROP_CHARGE_FULL:\ndrivers/power/supply/qcom_battmgr.c:574:\t\tif (unit != QCOM_BATTMGR_UNIT_mAh)\ndrivers/power/supply/qcom_battmgr.c-575-\t\t\treturn -ENODATA;\n--\ndrivers/power/supply/qcom_battmgr.c-578-\tcase POWER_SUPPLY_PROP_CHARGE_EMPTY:\ndrivers/power/supply/qcom_battmgr.c:579:\t\tif (unit != QCOM_BATTMGR_UNIT_mAh)\ndrivers/power/supply/qcom_battmgr.c-580-\t\t\treturn -ENODATA;\n--\ndrivers/power/supply/qcom_battmgr.c-583-\tcase POWER_SUPPLY_PROP_CHARGE_NOW:\ndrivers/power/supply/qcom_battmgr.c:584:\t\tif (unit != QCOM_BATTMGR_UNIT_mAh)\ndrivers/power/supply/qcom_battmgr.c-585-\t\t\treturn -ENODATA;\n--\ndrivers/power/supply/qcom_battmgr.c-591-\tcase POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:\ndrivers/power/supply/qcom_battmgr.c:592:\t\tif (unit != QCOM_BATTMGR_UNIT_mWh)\ndrivers/power/supply/qcom_battmgr.c-593-\t\t\treturn -ENODATA;\n--\ndrivers/power/supply/qcom_battmgr.c-596-\tcase POWER_SUPPLY_PROP_ENERGY_FULL:\ndrivers/power/supply/qcom_battmgr.c:597:\t\tif (unit != QCOM_BATTMGR_UNIT_mWh)\ndrivers/power/supply/qcom_battmgr.c-598-\t\t\treturn -ENODATA;\n--\ndrivers/power/supply/qcom_battmgr.c-601-\tcase POWER_SUPPLY_PROP_ENERGY_EMPTY:\ndrivers/power/supply/qcom_battmgr.c:602:\t\tif (unit != QCOM_BATTMGR_UNIT_mWh)\ndrivers/power/supply/qcom_battmgr.c-603-\t\t\treturn -ENODATA;\n--\ndrivers/power/supply/qcom_battmgr.c-606-\tcase POWER_SUPPLY_PROP_ENERGY_NOW:\ndrivers/power/supply/qcom_battmgr.c:607:\t\tif (unit != QCOM_BATTMGR_UNIT_mWh)\ndrivers/power/supply/qcom_battmgr.c-608-\t\t\treturn -ENODATA;\n--\ndrivers/power/supply/qcom_battmgr.c=662=static int qcom_battmgr_set_charge_control(struct qcom_battmgr battmgr,\n--\ndrivers/power/supply/qcom_battmgr.c-665-\tstruct qcom_battmgr_charge_ctrl_request request = {\ndrivers/power/supply/qcom_battmgr.c:666:\t\t.hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),\ndrivers/power/supply/qcom_battmgr.c-667-\t\t.hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP),\ndrivers/power/supply/qcom_battmgr.c:668:\t\t.hdr.opcode = cpu_to_le32(BATTMGR_CHG_CTRL_LIMIT_EN),\ndrivers/power/supply/qcom_battmgr.c-669-\t\t.enable = cpu_to_le32(1),\n--\ndrivers/power/supply/qcom_battmgr.c=982=static int qcom_battmgr_usb_sm8350_update(struct qcom_battmgr battmgr,\n--\ndrivers/power/supply/qcom_battmgr.c-993-\tmutex_lock(\u0026battmgr-\u003elock);\ndrivers/power/supply/qcom_battmgr.c:994:\tret = qcom_battmgr_request_property(battmgr, BATTMGR_USB_PROPERTY_GET, prop, 0);\ndrivers/power/supply/qcom_battmgr.c-995-\tmutex_unlock(\u0026battmgr-\u003elock);\n--\ndrivers/power/supply/qcom_battmgr.c=1000=static int qcom_battmgr_usb_get_property(struct power_supply psy,\n--\ndrivers/power/supply/qcom_battmgr.c-1009-\ndrivers/power/supply/qcom_battmgr.c:1010:\tif (battmgr-\u003evariant == QCOM_BATTMGR_SC8280XP \|\|\ndrivers/power/supply/qcom_battmgr.c:1011:\t battmgr-\u003evariant == QCOM_BATTMGR_X1E80100)\ndrivers/power/supply/qcom_battmgr.c-1012-\t\tret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);\n--\ndrivers/power/supply/qcom_battmgr.c=1105=static int qcom_battmgr_wls_sm8350_update(struct qcom_battmgr battmgr,\n--\ndrivers/power/supply/qcom_battmgr.c-1116-\tmutex_lock(\u0026battmgr-\u003elock);\ndrivers/power/supply/qcom_battmgr.c:1117:\tret = qcom_battmgr_request_property(battmgr, BATTMGR_WLS_PROPERTY_GET, prop, 0);\ndrivers/power/supply/qcom_battmgr.c-1118-\tmutex_unlock(\u0026battmgr-\u003elock);\n--\ndrivers/power/supply/qcom_battmgr.c=1123=static int qcom_battmgr_wls_get_property(struct power_supply psy,\n--\ndrivers/power/supply/qcom_battmgr.c-1132-\ndrivers/power/supply/qcom_battmgr.c:1133:\tif (battmgr-\u003evariant == QCOM_BATTMGR_SC8280XP \|\|\n\n" }
5/2	2026/10/13 22:30	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 9192 output: 36 thoughts: 37 Thoughts: Here's my summary, as the expert: Investigating a Dependency in the Power Subsystem Configuration Okay, so I'm looking into `drivers/power/supply/Kconfig` – specifically around line 211. My goal is to understand the dependencies of `CONFIG_BATTERY_QCOM_BATTMGR`. This is standard practice when I'm debugging or modifying power management configurations. I need to know what other Kconfig options need to be enabled or are pre-requisites for this particular battery driver. Understanding these dependencies is crucial for proper configuration and functionality, particularly when dealing with Qualcomm-based systems. I'm mentally parsing the Kconfig file to identify the logical conditions and any relevant context that's laid out in that section. Time to dig in!
6/2	2026/10/13 22:30	tool	read-file	0m Args: { "File": "drivers/power/supply/Kconfig", "FirstLine": 208, "LineCount": 25 } Results: { "Contents": " 208:\t\t Say Y here to expose battery information on Apple machines\n 209:\t\t through the generic battery class.\n 210:\t\n 211:\tconfig BATTERY_QCOM_BATTMGR\n 212:\t\ttristate \"Qualcomm PMIC GLINK battery manager support\"\n 213:\t\tdepends on QCOM_PMIC_GLINK\n 214:\t\tselect AUXILIARY_BUS\n 215:\t\thelp\n 216:\t\t Say Y here to enable the Qualcomm PMIC GLINK power supply driver,\n 217:\t\t which is used on modern Qualcomm platforms to provide battery and\n 218:\t\t power supply information.\n 219:\t\n 220:\tconfig BATTERY_OLPC\n 221:\t\ttristate \"One Laptop Per Child battery\"\n 222:\t\tdepends on OLPC_EC\n 223:\t\thelp\n 224:\t\t Say Y to enable support for the battery on the OLPC laptop.\n 225:\t\n 226:\tconfig BATTERY_SAMSUNG_SDI\n 227:\t\tbool \"Samsung SDI batteries\"\n 228:\t\thelp\n 229:\t\t Say Y to enable support for Samsung SDI battery data.\n 230:\t\t These batteries are used in Samsung mobile phones.\n 231:\t\n 232:\tconfig BATTERY_S2MU005\n" }
7/2	2026/10/13 22:30	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 9796 output: 23 thoughts: 52 Thoughts: Okay, here's my interpretation of that thought process, tailored for an expert audience: Investigating the Dependency Tree of QCOM_PMIC_GLINK Alright, so the core of the issue hinges on the configuration option `QCOM_PMIC_GLINK`. I need to understand its role and, more importantly, its dependencies. To truly grasp the implications of enabling or disabling this, I need to trace its inheritance. Thus, I'll bypass any assumptions and, rather, immediately query the configuration system to understand the conditional logic. The most direct approach is to use `grep` within the Kconfig files. This will allow me to quickly identify any `depends on` statements or other conditions that govern the inclusion of `QCOM_PMIC_GLINK`. This will give me a clear picture of the module's dependency tree.
8/2	2026/10/13 22:30	tool	grepper	0m Args: { "Expression": "config QCOM_PMIC_GLINK" } Results: { "Output": "drivers/soc/qcom/Kconfig=92=config QCOM_PMIC_PDCHARGER_ULOG\n--\ndrivers/soc/qcom/Kconfig-103-\ndrivers/soc/qcom/Kconfig:104:config QCOM_PMIC_GLINK\ndrivers/soc/qcom/Kconfig-105-\ttristate \"Qualcomm PMIC GLINK driver\"\n" }
9/2	2026/10/13 22:30	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 10156 output: 37 thoughts: 22 Thoughts: Here's a summary of my thought process, as requested: Diving into the QCOM Kconfig Okay, let's get down to brass tacks. I need to take a look at the Qualcomm system-on-chip configuration file. Specifically, I'm thinking about the Kconfig file located in the `drivers/soc/qcom/` directory. My hunch is that I'll find what I'm looking for around line 104. Time to jump in and see what's what. Let's see if this is the key to whatever problem I'm trying to solve.
10/2	2026/10/13 22:30	tool	read-file	0m Args: { "File": "drivers/soc/qcom/Kconfig", "FirstLine": 100, "LineCount": 25 } Results: { "Contents": " 100:\t\n 101:\t\t Say yes here to support PDCharger ULOG event tracing on modern\n 102:\t\t Qualcomm platforms.\n 103:\t\n 104:\tconfig QCOM_PMIC_GLINK\n 105:\t\ttristate \"Qualcomm PMIC GLINK driver\"\n 106:\t\tdepends on RPMSG\n 107:\t\tdepends on TYPEC\n 108:\t\tdepends on DRM\n 109:\t\tdepends on NET\n 110:\t\tdepends on OF\n 111:\t\tdepends on ARM64 \|\| COMPILE_TEST\n 112:\t\tselect AUXILIARY_BUS\n 113:\t\tselect QCOM_PDR_HELPERS\n 114:\t\tselect DRM_AUX_HPD_BRIDGE\n 115:\t\tdefault m if ARCH_QCOM\n 116:\t\thelp\n 117:\t\t The Qualcomm PMIC GLINK driver provides access, over GLINK, to the\n 118:\t\t USB and battery firmware running on one of the coprocessors in\n 119:\t\t several modern Qualcomm platforms.\n 120:\t\n 121:\t\t Say yes here to support USB-C and battery status on modern Qualcomm\n 122:\t\t platforms.\n 123:\t\n 124:\tconfig QCOM_RAMP_CTRL\n" }
11/2	2026/10/13 22:30	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 10697 output: 45 thoughts: 70 Thoughts: Okay, here's my take on those thoughts, framed as an expert diving into the code: Diving into the Build Configuration and Battery Manager Right, so I see this line: `depends on ARM64 \|\| COMPILE_TEST`. That's the starting point. It's telling me this code section, whatever it is, is contingent on either the architecture being ARM64 or the build environment being a compilation test. That immediately narrows down the context. I need to understand what this dependency tells us about the scope of the code. Is this a generic power management module, or something very specific? Now, the next thing that pops out is `qcom_battmgr.c`. That's a Qualcomm-specific battery manager, I'm assuming. Given the context, this is most likely for a Qualcomm-based system. Okay, the question now is, how is this module being pulled in? How is it probed by the kernel? How is it registered? Is it a driver, a module, or something else entirely? My next step is clear: I need to dig directly into `qcom_battmgr.c`. I'm going to search for the typical keywords and patterns: `module_init`, `module_exit`, `driver`, `probe`, anything that tells me how this thing is actually integrated into the kernel's power management framework. I want to see the function that gets called when it's loaded, and where that loading happens. That’ll tell me how the device tree (or other probe mechanism) interacts with this battery manager driver. I need to understand how the battery manager is brought online.
12/2	2026/10/13 22:30	tool	grepper	0m Args: { "Expression": "module_auxiliary_driver\|auxiliary_driver", "PathPrefixes": [ "drivers/power/supply/qcom_battmgr.c" ] } Results: { "Output": "drivers/power/supply/qcom_battmgr.c=1756=MODULE_DEVICE_TABLE(auxiliary, qcom_battmgr_id_table);\ndrivers/power/supply/qcom_battmgr.c-1757-\ndrivers/power/supply/qcom_battmgr.c:1758:static struct auxiliary_driver qcom_battmgr_driver = {\ndrivers/power/supply/qcom_battmgr.c-1759-\t.name = \"pmic_glink_power_supply\",\n--\ndrivers/power/supply/qcom_battmgr.c-1763-\ndrivers/power/supply/qcom_battmgr.c:1764:module_auxiliary_driver(qcom_battmgr_driver);\ndrivers/power/supply/qcom_battmgr.c-1765-\n" }
13/2	2026/10/13 22:30	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 11377 output: 23 thoughts: 41 Thoughts: Okay, let's dive into this "pmic_glink_power_supply" thing. My first instinct is always to trace its creation and registration. So, I'm going to start by grepping the codebase for that exact string – `pmic_glink_power_supply`. That should quickly reveal where it's defined and how it's brought into the system. Knowing the creation and registration details is key to understanding its overall interaction with the rest of the power management framework. Let's see what we find.
14/2	2026/10/13 22:30	tool	grepper	0m Args: { "Expression": "pmic_glink_power_supply" } Results: { "Output": "drivers/power/supply/qcom_battmgr.c=1758=static struct auxiliary_driver qcom_battmgr_driver = {\ndrivers/power/supply/qcom_battmgr.c:1759:\t.name = \"pmic_glink_power_supply\",\ndrivers/power/supply/qcom_battmgr.c-1760-\t.probe = qcom_battmgr_probe,\n" }
15/2	2026/10/13 22:30	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 11666 output: 33 thoughts: 22 Thoughts: Here's my attempt at summarizing the thought process, tailored for an expert audience: Investigating the Power Management Interface Okay, so I need to track down where this thing is being instantiated. My first instinct, given the architecture, is to look within the Qualcomm PMIC glue layer. I'm thinking the likely candidates for the code are modules like `qcom_pmic_glink` or something similar, perhaps with a slightly different naming convention depending on the exact SoC and PMIC implementation. I need to dive into that codebase and start tracing the calls. I'm betting the creation happens there.
16/2	2026/10/13 22:30	tool	grepper	0m Args: { "Expression": "pmic_glink", "PathPrefixes": [ "drivers/soc/qcom/" ] } Results: { "Output": "\nFull output is too long, showing 200 out of 489 lines.\nUse more precise expression or PathPrefixes if possible.\n\nNumber of matching lines per file (3 files in total):\ndrivers/soc/qcom/Makefile:2\ndrivers/soc/qcom/pmic_glink.c:93\ndrivers/soc/qcom/pmic_glink_altmode.c:78\n\ndrivers/soc/qcom/Makefile=12=obj-$(CONFIG_QCOM_PDR_MSG)\t+= qcom_pdr_msg.o\ndrivers/soc/qcom/Makefile:13:obj-$(CONFIG_QCOM_PMIC_GLINK)\t+= pmic_glink.o\ndrivers/soc/qcom/Makefile:14:obj-$(CONFIG_QCOM_PMIC_GLINK)\t+= pmic_glink_altmode.o\ndrivers/soc/qcom/Makefile-15-obj-$(CONFIG_QCOM_PMIC_PDCHARGER_ULOG)\t+= pmic_pdcharger_ulog.o\n--\ndrivers/soc/qcom/pmic_glink.c-14-#include \u003clinux/soc/qcom/pdr.h\u003e\ndrivers/soc/qcom/pmic_glink.c:15:#include \u003clinux/soc/qcom/pmic_glink.h\u003e\ndrivers/soc/qcom/pmic_glink.c-16-#include \u003clinux/spinlock.h\u003e\n--\ndrivers/soc/qcom/pmic_glink.c=20=enum {\n--\ndrivers/soc/qcom/pmic_glink.c-25-\ndrivers/soc/qcom/pmic_glink.c:26:struct pmic_glink_data {\ndrivers/soc/qcom/pmic_glink.c-27-\tunsigned long\tclient_mask;\n--\ndrivers/soc/qcom/pmic_glink.c-31-\ndrivers/soc/qcom/pmic_glink.c:32:struct pmic_glink {\ndrivers/soc/qcom/pmic_glink.c-33-\tstruct device dev;\n--\ndrivers/soc/qcom/pmic_glink.c-37-\ndrivers/soc/qcom/pmic_glink.c:38:\tconst struct pmic_glink_data data;\ndrivers/soc/qcom/pmic_glink.c-39-\n--\ndrivers/soc/qcom/pmic_glink.c-54-\ndrivers/soc/qcom/pmic_glink.c:55:static struct pmic_glink __pmic_glink;\ndrivers/soc/qcom/pmic_glink.c:56:static DEFINE_MUTEX(__pmic_glink_lock);\ndrivers/soc/qcom/pmic_glink.c-57-\ndrivers/soc/qcom/pmic_glink.c:58:struct pmic_glink_client {\ndrivers/soc/qcom/pmic_glink.c-59-\tstruct list_head node;\ndrivers/soc/qcom/pmic_glink.c-60-\ndrivers/soc/qcom/pmic_glink.c:61:\tstruct pmic_glink pg;\ndrivers/soc/qcom/pmic_glink.c-62-\tunsigned int id;\n--\ndrivers/soc/qcom/pmic_glink.c-68-\ndrivers/soc/qcom/pmic_glink.c:69:static void _devm_pmic_glink_release_client(struct device dev, void res)\ndrivers/soc/qcom/pmic_glink.c-70-{\ndrivers/soc/qcom/pmic_glink.c:71:\tstruct pmic_glink_client client = (struct pmic_glink_client )res;\ndrivers/soc/qcom/pmic_glink.c:72:\tstruct pmic_glink pg = client-\u003epg;\ndrivers/soc/qcom/pmic_glink.c-73-\tunsigned long flags;\n--\ndrivers/soc/qcom/pmic_glink.c-79-\ndrivers/soc/qcom/pmic_glink.c:80:struct pmic_glink_client devm_pmic_glink_client_alloc(struct device dev,\ndrivers/soc/qcom/pmic_glink.c-81-\t\t\t\t\t\t unsigned int id,\n--\ndrivers/soc/qcom/pmic_glink.c-85-{\ndrivers/soc/qcom/pmic_glink.c:86:\tstruct pmic_glink_client client;\ndrivers/soc/qcom/pmic_glink.c:87:\tstruct pmic_glink pg = dev_get_drvdata(dev-\u003eparent);\ndrivers/soc/qcom/pmic_glink.c-88-\ndrivers/soc/qcom/pmic_glink.c:89:\tclient = devres_alloc(_devm_pmic_glink_release_client, sizeof(client), GFP_KERNEL);\ndrivers/soc/qcom/pmic_glink.c-90-\tif (!client)\n--\ndrivers/soc/qcom/pmic_glink.c-103-}\ndrivers/soc/qcom/pmic_glink.c:104:EXPORT_SYMBOL_GPL(devm_pmic_glink_client_alloc);\ndrivers/soc/qcom/pmic_glink.c-105-\ndrivers/soc/qcom/pmic_glink.c:106:void pmic_glink_client_register(struct pmic_glink_client client)\ndrivers/soc/qcom/pmic_glink.c-107-{\ndrivers/soc/qcom/pmic_glink.c:108:\tstruct pmic_glink pg = client-\u003epg;\ndrivers/soc/qcom/pmic_glink.c-109-\tunsigned long flags;\n--\ndrivers/soc/qcom/pmic_glink.c-118-}\ndrivers/soc/qcom/pmic_glink.c:119:EXPORT_SYMBOL_GPL(pmic_glink_client_register);\ndrivers/soc/qcom/pmic_glink.c-120-\ndrivers/soc/qcom/pmic_glink.c:121:int pmic_glink_send(struct pmic_glink_client client, void data, size_t len)\ndrivers/soc/qcom/pmic_glink.c-122-{\ndrivers/soc/qcom/pmic_glink.c:123:\tstruct pmic_glink pg = client-\u003epg;\ndrivers/soc/qcom/pmic_glink.c-124-\tbool timeout_reached = false;\n--\ndrivers/soc/qcom/pmic_glink.c-149-}\ndrivers/soc/qcom/pmic_glink.c:150:EXPORT_SYMBOL_GPL(pmic_glink_send);\ndrivers/soc/qcom/pmic_glink.c-151-\ndrivers/soc/qcom/pmic_glink.c:152:static int pmic_glink_rpmsg_callback(struct rpmsg_device rpdev, void data,\ndrivers/soc/qcom/pmic_glink.c-153-\t\t\t\t int len, void priv, u32 addr)\ndrivers/soc/qcom/pmic_glink.c-154-{\ndrivers/soc/qcom/pmic_glink.c:155:\tstruct pmic_glink_client client;\ndrivers/soc/qcom/pmic_glink.c:156:\tstruct pmic_glink_hdr hdr;\ndrivers/soc/qcom/pmic_glink.c:157:\tstruct pmic_glink pg = dev_get_drvdata(\u0026rpdev-\u003edev);\ndrivers/soc/qcom/pmic_glink.c-158-\tunsigned long flags;\n--\ndrivers/soc/qcom/pmic_glink.c-176-\ndrivers/soc/qcom/pmic_glink.c:177:static void pmic_glink_aux_release(struct device dev)\ndrivers/soc/qcom/pmic_glink.c-178-{\n--\ndrivers/soc/qcom/pmic_glink.c-181-\ndrivers/soc/qcom/pmic_glink.c:182:static int pmic_glink_add_aux_device(struct pmic_glink pg,\ndrivers/soc/qcom/pmic_glink.c-183-\t\t\t\t struct auxiliary_device aux,\n--\ndrivers/soc/qcom/pmic_glink.c-190-\taux-\u003edev.parent = parent;\ndrivers/soc/qcom/pmic_glink.c:191:\taux-\u003edev.release = pmic_glink_aux_release;\ndrivers/soc/qcom/pmic_glink.c-192-\tdevice_set_of_node_from_dev(\u0026aux-\u003edev, parent);\n--\ndrivers/soc/qcom/pmic_glink.c-205-\ndrivers/soc/qcom/pmic_glink.c:206:static void pmic_glink_del_aux_device(struct pmic_glink pg,\ndrivers/soc/qcom/pmic_glink.c-207-\t\t\t\t struct auxiliary_device aux)\n--\ndrivers/soc/qcom/pmic_glink.c-212-\ndrivers/soc/qcom/pmic_glink.c:213:static void pmic_glink_state_notify_clients(struct pmic_glink pg)\ndrivers/soc/qcom/pmic_glink.c-214-{\ndrivers/soc/qcom/pmic_glink.c:215:\tstruct pmic_glink_client client;\ndrivers/soc/qcom/pmic_glink.c-216-\tunsigned int new_state = pg-\u003eclient_state;\n--\ndrivers/soc/qcom/pmic_glink.c-235-\ndrivers/soc/qcom/pmic_glink.c:236:static void pmic_glink_pdr_callback(int state, char svc_path, void priv)\ndrivers/soc/qcom/pmic_glink.c-237-{\ndrivers/soc/qcom/pmic_glink.c:238:\tstruct pmic_glink pg = priv;\ndrivers/soc/qcom/pmic_glink.c-239-\n--\ndrivers/soc/qcom/pmic_glink.c-242-\ndrivers/soc/qcom/pmic_glink.c:243:\tpmic_glink_state_notify_clients(pg);\ndrivers/soc/qcom/pmic_glink.c-244-}\ndrivers/soc/qcom/pmic_glink.c-245-\ndrivers/soc/qcom/pmic_glink.c:246:static int pmic_glink_rpmsg_probe(struct rpmsg_device rpdev)\ndrivers/soc/qcom/pmic_glink.c-247-{\ndrivers/soc/qcom/pmic_glink.c:248:\tstruct pmic_glink pg;\ndrivers/soc/qcom/pmic_glink.c-249-\ndrivers/soc/qcom/pmic_glink.c:250:\tguard(mutex)(\u0026__pmic_glink_lock);\ndrivers/soc/qcom/pmic_glink.c:251:\tpg = __pmic_glink;\ndrivers/soc/qcom/pmic_glink.c-252-\tif (!pg)\ndrivers/soc/qcom/pmic_glink.c-253-\t\treturn dev_err_probe(\u0026rpdev-\u003edev, -EPROBE_DEFER,\ndrivers/soc/qcom/pmic_glink.c:254:\t\t\t\t \"no pmic_glink device to attach to\\n\");\ndrivers/soc/qcom/pmic_glink.c-255-\n--\ndrivers/soc/qcom/pmic_glink.c-262-\t\tpg-\u003epdr_state = SERVREG_SERVICE_STATE_UP;\ndrivers/soc/qcom/pmic_glink.c:263:\tpmic_glink_state_notify_clients(pg);\ndrivers/soc/qcom/pmic_glink.c-264-\n--\ndrivers/soc/qcom/pmic_glink.c-267-\ndrivers/soc/qcom/pmic_glink.c:268:static void pmic_glink_rpmsg_remove(struct rpmsg_device rpdev)\ndrivers/soc/qcom/pmic_glink.c-269-{\ndrivers/soc/qcom/pmic_glink.c:270:\tstruct pmic_glink pg;\ndrivers/soc/qcom/pmic_glink.c-271-\ndrivers/soc/qcom/pmic_glink.c:272:\tguard(mutex)(\u0026__pmic_glink_lock);\ndrivers/soc/qcom/pmic_glink.c:273:\tpg = __pmic_glink;\ndrivers/soc/qcom/pmic_glink.c-274-\tif (!pg)\n--\ndrivers/soc/qcom/pmic_glink.c-280-\t\tpg-\u003epdr_state = SERVREG_SERVICE_STATE_DOWN;\ndrivers/soc/qcom/pmic_glink.c:281:\tpmic_glink_state_notify_clients(pg);\ndrivers/soc/qcom/pmic_glink.c-282-}\ndrivers/soc/qcom/pmic_glink.c-283-\ndrivers/soc/qcom/pmic_glink.c:284:static const struct rpmsg_device_id pmic_glink_rpmsg_id_match[] = {\ndrivers/soc/qcom/pmic_glink.c-285-\t{.name = \"PMIC_RTR_ADSP_APPS\", .driver_data = true },\n--\ndrivers/soc/qcom/pmic_glink.c-289-\ndrivers/soc/qcom/pmic_glink.c:290:static struct rpmsg_driver pmic_glink_rpmsg_driver = {\ndrivers/soc/qcom/pmic_glink.c:291:\t.probe = pmic_glink_rpmsg_probe,\ndrivers/soc/qcom/pmic_glink.c:292:\t.remove = pmic_glink_rpmsg_remove,\ndrivers/soc/qcom/pmic_glink.c:293:\t.callback = pmic_glink_rpmsg_callback,\ndrivers/soc/qcom/pmic_glink.c:294:\t.id_table = pmic_glink_rpmsg_id_match,\ndrivers/soc/qcom/pmic_glink.c-295-\t.drv = {\ndrivers/soc/qcom/pmic_glink.c:296:\t\t.name = \"qcom_pmic_glink_rpmsg\",\ndrivers/soc/qcom/pmic_glink.c-297-\t},\n--\ndrivers/soc/qcom/pmic_glink.c-299-\ndrivers/soc/qcom/pmic_glink.c:300:static int pmic_glink_probe(struct platform_device pdev)\ndrivers/soc/qcom/pmic_glink.c-301-{\ndrivers/soc/qcom/pmic_glink.c-302-\tstruct pdr_service service;\ndrivers/soc/qcom/pmic_glink.c:303:\tstruct pmic_glink pg;\ndrivers/soc/qcom/pmic_glink.c-304-\tint ret;\n--\ndrivers/soc/qcom/pmic_glink.c-321-\ndrivers/soc/qcom/pmic_glink.c:322:\tpg-\u003epdr = pdr_handle_alloc(pmic_glink_pdr_callback, pg);\ndrivers/soc/qcom/pmic_glink.c-323-\tif (IS_ERR(pg-\u003epdr)) {\n--\ndrivers/soc/qcom/pmic_glink.c-329-\tif (pg-\u003edata-\u003eclient_mask \u0026 BIT(PMIC_GLINK_CLIENT_UCSI)) {\ndrivers/soc/qcom/pmic_glink.c:330:\t\tret = pmic_glink_add_aux_device(pg, \u0026pg-\u003eucsi_aux, \"ucsi\");\ndrivers/soc/qcom/pmic_glink.c-331-\t\tif (ret)\n--\ndrivers/soc/qcom/pmic_glink.c-334-\tif (pg-\u003edata-\u003eclient_mask \u0026 BIT(PMIC_GLINK_CLIENT_ALTMODE)) {\ndrivers/soc/qcom/pmic_glink.c:335:\t\tret = pmic_glink_add_aux_device(pg, \u0026pg-\u003ealtmode_aux, \"altmode\");\ndrivers/soc/qcom/pmic_glink.c-336-\t\tif (ret)\n--\ndrivers/soc/qcom/pmic_glink.c-339-\tif (pg-\u003edata-\u003eclient_mask \u0026 BIT(PMIC_GLINK_CLIENT_BATT)) {\ndrivers/soc/qcom/pmic_glink.c:340:\t\tret = pmic_glink_add_aux_device(pg, \u0026pg-\u003eps_aux, \"power-supply\");\ndrivers/soc/qcom/pmic_glink.c-341-\t\tif (ret)\n--\ndrivers/soc/qcom/pmic_glink.c-354-\ndrivers/soc/qcom/pmic_glink.c:355:\tmutex_lock(\u0026__pmic_glink_lock);\ndrivers/soc/qcom/pmic_glink.c:356:\t__pmic_glink = pg;\ndrivers/soc/qcom/pmic_glink.c:357:\tmutex_unlock(\u0026__pmic_glink_lock);\ndrivers/soc/qcom/pmic_glink.c-358-\n--\ndrivers/soc/qcom/pmic_glink.c-362-\tif (pg-\u003edata-\u003eclient_mask \u0026 BIT(PMIC_GLINK_CLIENT_BATT))\ndrivers/soc/qcom/pmic_glink.c:363:\t\tpmic_glink_del_aux_device(pg, \u0026pg-\u003eps_aux);\ndrivers/soc/qcom/pmic_glink.c-364-out_release_altmode_aux:\ndrivers/soc/qcom/pmic_glink.c-365-\tif (pg-\u003edata-\u003eclient_mask \u0026 BIT(PMIC_GLINK_CLIENT_ALTMODE))\ndrivers/soc/qcom/pmic_glink.c:366:\t\tpmic_glink_del_aux_device(pg, \u0026pg-\u003ealtmode_aux);\ndrivers/soc/qcom/pmic_glink.c-367-out_release_ucsi_aux:\ndrivers/soc/qcom/pmic_glink.c-368-\tif (pg-\u003edata-\u003eclient_mask \u0026 BIT(PMIC_GLINK_CLIENT_UCSI))\ndrivers/soc/qcom/pmic_glink.c:369:\t\tpmic_glink_del_aux_device(pg, \u0026pg-\u003eucsi_aux);\ndrivers/soc/qcom/pmic_glink.c-370-out_release_pdr_handle:\n--\ndrivers/soc/qcom/pmic_glink.c-375-\ndrivers/soc/qcom/pmic_glink.c:376:static void pmic_glink_remove(struct platform_device pdev)\ndrivers/soc/qcom/pmic_glink.c-377-{\ndrivers/soc/qcom/pmic_glink.c:378:\tstruct pmic_glink pg = dev_get_drvdata(\u0026pdev-\u003edev);\ndrivers/soc/qcom/pmic_glink.c-379-\n--\ndrivers/soc/qcom/pmic_glink.c-382-\tif (pg-\u003edata-\u003eclient_mask \u0026 BIT(PMIC_GLINK_CLIENT_BATT))\ndrivers/soc/qcom/pmic_glink.c:383:\t\tpmic_glink_del_aux_device(pg, \u0026pg-\u003eps_aux);\ndrivers/soc/qcom/pmic_glink.c-384-\tif (pg-\u003edata-\u003eclient_mask \u0026 BIT(PMIC_GLINK_CLIENT_ALTMODE))\ndrivers/soc/qcom/pmic_glink.c:385:\t\tpmic_glink_del_aux_device(pg, \u0026pg-\u003ealtmode_aux);\n\n" }
17/2	2026/10/13 22:30	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 17167 output: 44 thoughts: 45 Thoughts: Here's my analysis of the provided snippet, tailored for an expert audience and presented as a first-person thought process: Diving into the PMIC G-Link Driver Okay, I'm taking a look at `pmic_glink.c`. Right away, it's clear: `pmic_glink_probe` is defined as a platform driver. That's a good starting point. Now, to understand how this driver is being attached to specific hardware, I need to check its device tree bindings. Specifically, I'll examine the `of_match_table` within this driver. This table will define the compatible strings that this driver is designed to handle. That's where I will be able to determine what specific hardware the G-Link driver will probe and initialize. Essentially, I'll look for the mapping between the hardware IDs in the device tree and what the G-Link driver supports. This'll give me the essential link between the driver and its hardware.
18/2	2026/10/13 22:30	tool	grepper	0m Args: { "Expression": "pmic_glink_of_match", "PathPrefixes": [ "drivers/soc/qcom/pmic_glink.c" ] } Results: { "Output": "drivers/soc/qcom/pmic_glink.c=401=static const struct pmic_glink_data pmic_glink_soccp_data = {\n--\ndrivers/soc/qcom/pmic_glink.c-406-\ndrivers/soc/qcom/pmic_glink.c:407:static const struct of_device_id pmic_glink_of_match[] = {\ndrivers/soc/qcom/pmic_glink.c-408-\t{ .compatible = \"qcom,glymur-pmic-glink\", .data = \u0026pmic_glink_soccp_data },\n--\ndrivers/soc/qcom/pmic_glink.c-412-};\ndrivers/soc/qcom/pmic_glink.c:413:MODULE_DEVICE_TABLE(of, pmic_glink_of_match);\ndrivers/soc/qcom/pmic_glink.c-414-\ndrivers/soc/qcom/pmic_glink.c=415=static struct platform_driver pmic_glink_driver = {\n--\ndrivers/soc/qcom/pmic_glink.c-419-\t\t.name = \"qcom_pmic_glink\",\ndrivers/soc/qcom/pmic_glink.c:420:\t\t.of_match_table = pmic_glink_of_match,\ndrivers/soc/qcom/pmic_glink.c-421-\t},\n" }
19/2	2026/10/13 22:30	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 17846 output: 41 thoughts: 528 Thoughts: Analyzing the Reachability of `pmic_glink_driver` on amd64 for Fuzzing Okay, let's break this down. The user's asking about fuzzing `pmic_glink_driver`, which is a Device Tree (DT) platform driver for Qualcomm SoCs, specifically using `qcom,glymur-pmic-glink` and similar bindings. This driver communicates with the Qualcomm ADSP coprocessor via GLINK, using rpmsg via `pmic_glink_rpmsg_driver`. The crucial point here is the target architecture: amd64. My immediate concern is: can this driver even run on amd64? The Kconfig file in `drivers/soc/qcom` shows a dependency: `depends on ARM64 \|\| COMPILE_TEST`. So, on amd64, `CONFIG_QCOM_PMIC_GLINK` is only enabled if `COMPILE_TEST` is active. That's the first hurdle. But even if the code is compiled, the next major question is: is it reachable? This brings us to the core principle of Section 2 of the fuzzing instructions. Reachability is paramount. Fuzzing only makes sense for code that can actually execute in standard virtualized environments like GCE or QEMU, leveraging software-emulated devices. Unreachable code must not be fuzzed, regardless of added assertions or complexity. Section 2 then clarifies what qualifies as "structurally unreachable": vendor-specific hardware requiring specific physical cards (e.g., PCIe switches, SmartNICs, GPU drivers) that are not emulated in the standard environment, and unreachable execution paths (e.g., teardown callbacks triggered only by physical unplugging). Code paths exclusive to architectures other than the target architecture, like our example, fall under this as well. Therefore, I need to carefully assess if the Qualcomm PMIC GLINK battery manager is actually probed or reached on amd64 within the constraints of a standard QEMU or GCE environment. I'm going to investigate how `qcom_battmgr` is instantiated/probed. Specifically, I'll need to check the `qcom_battmgr_probe` function located in `drivers/power/supply/qcom_battmgr.c` to understand the conditions that trigger the driver's initialization. This is a critical first step to determine if this code is a valid candidate for fuzzing.
20/2	2026/10/13 22:31	tool	grepper	0m Args: { "Expression": "qcom_battmgr_probe", "PathPrefixes": [ "drivers/power/supply/qcom_battmgr.c" ] } Results: { "Output": "drivers/power/supply/qcom_battmgr.c=1646=static char qcom_battmgr_battery[] = { \"battery\" };\ndrivers/power/supply/qcom_battmgr.c-1647-\ndrivers/power/supply/qcom_battmgr.c:1648:static int qcom_battmgr_probe(struct auxiliary_device adev,\ndrivers/power/supply/qcom_battmgr.c-1649-\t\t\t const struct auxiliary_device_id *id)\n--\ndrivers/power/supply/qcom_battmgr.c=1758=static struct auxiliary_driver qcom_battmgr_driver = {\ndrivers/power/supply/qcom_battmgr.c-1759-\t.name = \"pmic_glink_power_supply\",\ndrivers/power/supply/qcom_battmgr.c:1760:\t.probe = qcom_battmgr_probe,\ndrivers/power/supply/qcom_battmgr.c-1761-\t.id_table = qcom_battmgr_id_table,\n" }
21/2	2026/10/13 22:31	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 19216 output: 42 thoughts: 19 Thoughts: Okay, let's dive into this. Here's my take on understanding this `qcom_battmgr_probe` function. Analyzing qcom_battmgr_probe: A Deep Dive Alright, I'm thinking, let's take a look at this `qcom_battmgr_probe` function. The name itself suggests it's the probe function for a battery manager. Given my understanding of embedded systems and power management, that makes perfect sense. I want to see precisely how the Qualcomm battery manager is initialized and integrated into the system during the probe process. I'm keen to understand how it handles things like device tree bindings, resource allocation (interrupts, memory regions, etc.), and driver registration with the kernel. I'm hoping to see how it sets up any necessary hardware interfaces for communication with the battery management IC. I'm looking to identify the specific registers it interacts with. Understanding the control flow will be crucial; is this a synchronous probe, or does it utilize deferred probing? Any error handling strategies, and how they handle potential hardware failures are of high interest. Essentially, my goal is to get a solid grasp of this driver's initial setup and operation within the broader power management framework.
22/2	2026/10/13 22:31	tool	read-file	0m Args: { "File": "drivers/power/supply/qcom_battmgr.c", "FirstLine": 1648, "LineCount": 80 } Results: { "Contents": "1648:\tstatic int qcom_battmgr_probe(struct auxiliary_device adev,\n1649:\t\t\t\t const struct auxiliary_device_id id)\n1650:\t{\n1651:\t\tconst struct power_supply_desc psy_desc;\n1652:\t\tstruct power_supply_config psy_cfg_supply = {};\n1653:\t\tstruct power_supply_config psy_cfg = {};\n1654:\t\tconst struct of_device_id match;\n1655:\t\tstruct qcom_battmgr battmgr;\n1656:\t\tstruct device dev = \u0026adev-\u003edev;\n1657:\t\tint ret;\n1658:\t\n1659:\t\tbattmgr = devm_kzalloc(dev, sizeof(*battmgr), GFP_KERNEL);\n1660:\t\tif (!battmgr)\n1661:\t\t\treturn -ENOMEM;\n1662:\t\n1663:\t\tbattmgr-\u003edev = dev;\n1664:\t\n1665:\t\tpsy_cfg.drv_data = battmgr;\n1666:\t\tpsy_cfg.fwnode = dev_fwnode(\u0026adev-\u003edev);\n1667:\t\n1668:\t\tpsy_cfg_supply.drv_data = battmgr;\n1669:\t\tpsy_cfg_supply.fwnode = dev_fwnode(\u0026adev-\u003edev);\n1670:\t\tpsy_cfg_supply.supplied_to = qcom_battmgr_battery;\n1671:\t\tpsy_cfg_supply.num_supplicants = 1;\n1672:\t\n1673:\t\tmutex_init(\u0026battmgr-\u003elock);\n1674:\t\tinit_completion(\u0026battmgr-\u003eack);\n1675:\t\n1676:\t\tmatch = of_match_device(qcom_battmgr_of_variants, dev-\u003eparent);\n1677:\t\tif (match)\n1678:\t\t\tbattmgr-\u003evariant = (unsigned long)match-\u003edata;\n1679:\t\telse\n1680:\t\t\tbattmgr-\u003evariant = QCOM_BATTMGR_SM8350;\n1681:\t\n1682:\t\tret = qcom_battmgr_charge_control_thresholds_init(battmgr);\n1683:\t\tif (ret \u003c 0)\n1684:\t\t\treturn dev_err_probe(dev, ret,\n1685:\t\t\t\t\t \"failed to init battery charge control thresholds\\n\");\n1686:\t\n1687:\t\tif (battmgr-\u003evariant == QCOM_BATTMGR_SC8280XP \|\|\n1688:\t\t battmgr-\u003evariant == QCOM_BATTMGR_X1E80100) {\n1689:\t\t\tif (battmgr-\u003evariant == QCOM_BATTMGR_X1E80100)\n1690:\t\t\t\tpsy_desc = \u0026x1e80100_bat_psy_desc;\n1691:\t\t\telse\n1692:\t\t\t\tpsy_desc = \u0026sc8280xp_bat_psy_desc;\n1693:\t\n1694:\t\t\tbattmgr-\u003ebat_psy = devm_power_supply_register(dev, psy_desc, \u0026psy_cfg);\n1695:\t\t\tif (IS_ERR(battmgr-\u003ebat_psy))\n1696:\t\t\t\treturn dev_err_probe(dev, PTR_ERR(battmgr-\u003ebat_psy),\n1697:\t\t\t\t\t\t \"failed to register battery power supply\\n\");\n1698:\t\n1699:\t\t\tbattmgr-\u003eac_psy = devm_power_supply_register(dev, \u0026sc8280xp_ac_psy_desc, \u0026psy_cfg_supply);\n1700:\t\t\tif (IS_ERR(battmgr-\u003eac_psy))\n1701:\t\t\t\treturn dev_err_probe(dev, PTR_ERR(battmgr-\u003eac_psy),\n1702:\t\t\t\t\t\t \"failed to register AC power supply\\n\");\n1703:\t\n1704:\t\t\tbattmgr-\u003eusb_psy = devm_power_supply_register(dev, \u0026sc8280xp_usb_psy_desc, \u0026psy_cfg_supply);\n1705:\t\t\tif (IS_ERR(battmgr-\u003eusb_psy))\n1706:\t\t\t\treturn dev_err_probe(dev, PTR_ERR(battmgr-\u003eusb_psy),\n1707:\t\t\t\t\t\t \"failed to register USB power supply\\n\");\n1708:\t\n1709:\t\t\tbattmgr-\u003ewls_psy = devm_power_supply_register(dev, \u0026sc8280xp_wls_psy_desc, \u0026psy_cfg_supply);\n1710:\t\t\tif (IS_ERR(battmgr-\u003ewls_psy))\n1711:\t\t\t\treturn dev_err_probe(dev, PTR_ERR(battmgr-\u003ewls_psy),\n1712:\t\t\t\t\t\t \"failed to register wireless charing power supply\\n\");\n1713:\t\t} else {\n1714:\t\t\tif (battmgr-\u003evariant == QCOM_BATTMGR_SM8550)\n1715:\t\t\t\tpsy_desc = \u0026sm8550_bat_psy_desc;\n1716:\t\t\telse\n1717:\t\t\t\tpsy_desc = \u0026sm8350_bat_psy_desc;\n1718:\t\n1719:\t\t\tbattmgr-\u003ebat_psy = devm_power_supply_register(dev, psy_desc, \u0026psy_cfg);\n1720:\t\t\tif (IS_ERR(battmgr-\u003ebat_psy))\n1721:\t\t\t\treturn dev_err_probe(dev, PTR_ERR(battmgr-\u003ebat_psy),\n1722:\t\t\t\t\t\t \"failed to register battery power supply\\n\");\n1723:\t\n1724:\t\t\tbattmgr-\u003eusb_psy = devm_power_supply_register(dev, \u0026sm8350_usb_psy_desc, \u0026psy_cfg_supply);\n1725:\t\t\tif (IS_ERR(battmgr-\u003eusb_psy))\n1726:\t\t\t\treturn dev_err_probe(dev, PTR_ERR(battmgr-\u003eusb_psy),\n1727:\t\t\t\t\t\t \"failed to register USB power supply\\n\");\n" }
23/2	2026/10/13 22:31	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 21105 output: 42 thoughts: 9 Thoughts: Okay, I'm ready. Here's my summary, presented as my internal thought process, assuming I'm an expert in the field: Analyzing the Probe's Continued Behavior Let's see, the prompt directs me to examine the text below, specifically focusing on its potential for further probing. Alright, so I'm looking for clues, implicit directions, or anything that suggests a need for deeper analysis or subsequent steps. My initial impression is that this is intentionally open-ended, which is typical. It's designed to gauge my understanding of the current state of a system. What are the possibilities for taking the probe deeper? Is there an implied hypothesis I should explore, or a model to use? Is the next step, as indicated, further reading, and if so, of what exactly?
24/2	2026/10/13 22:31	tool	read-file	0m Args: { "File": "drivers/power/supply/qcom_battmgr.c", "FirstLine": 1728, "LineCount": 40 } Results: { "Contents": "1728:\t\n1729:\t\t\tbattmgr-\u003ewls_psy = devm_power_supply_register(dev, \u0026sm8350_wls_psy_desc, \u0026psy_cfg_supply);\n1730:\t\t\tif (IS_ERR(battmgr-\u003ewls_psy))\n1731:\t\t\t\treturn dev_err_probe(dev, PTR_ERR(battmgr-\u003ewls_psy),\n1732:\t\t\t\t\t\t \"failed to register wireless charing power supply\\n\");\n1733:\t\t}\n1734:\t\n1735:\t\tret = devm_work_autocancel(dev, \u0026battmgr-\u003eenable_work,\n1736:\t\t\t\t\t qcom_battmgr_enable_worker);\n1737:\t\tif (ret)\n1738:\t\t\treturn ret;\n1739:\t\n1740:\t\tbattmgr-\u003eclient = devm_pmic_glink_client_alloc(dev, PMIC_GLINK_OWNER_BATTMGR,\n1741:\t\t\t\t\t\t\t qcom_battmgr_callback,\n1742:\t\t\t\t\t\t\t qcom_battmgr_pdr_notify,\n1743:\t\t\t\t\t\t\t battmgr);\n1744:\t\tif (IS_ERR(battmgr-\u003eclient))\n1745:\t\t\treturn PTR_ERR(battmgr-\u003eclient);\n1746:\t\n1747:\t\tpmic_glink_client_register(battmgr-\u003eclient);\n1748:\t\n1749:\t\treturn 0;\n1750:\t}\n1751:\t\n1752:\tstatic const struct auxiliary_device_id qcom_battmgr_id_table[] = {\n1753:\t\t{ .name = \"pmic_glink.power-supply\", },\n1754:\t\t{},\n1755:\t};\n1756:\tMODULE_DEVICE_TABLE(auxiliary, qcom_battmgr_id_table);\n1757:\t\n1758:\tstatic struct auxiliary_driver qcom_battmgr_driver = {\n1759:\t\t.name = \"pmic_glink_power_supply\",\n1760:\t\t.probe = qcom_battmgr_probe,\n1761:\t\t.id_table = qcom_battmgr_id_table,\n1762:\t};\n1763:\t\n1764:\tmodule_auxiliary_driver(qcom_battmgr_driver);\n1765:\t\n1766:\tMODULE_DESCRIPTION(\"Qualcomm PMIC GLINK battery manager driver\");\n1767:\tMODULE_LICENSE(\"GPL\");\n" }
25/2	2026/10/13 22:31	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 21994 output: 20 thoughts: 288 Thoughts: Analyzing the Power Supply Driver Okay, so I'm looking at `qcom_battmgr_driver` and it seems to be an auxiliary driver. Specifically, it's tied to a device called "pmic_glink_power_supply", and it uses the `pmic_glink.power-supply` ID table. I need to understand when this auxiliary device is actually created. Ah, right! In `pmic_glink.c`, I see `pmic_glink_add_aux_device(pg, &pg->ps_aux, "power-supply")`. And of course, `pmic_glink` itself is a platform driver, initiated via Device Tree with an `of_match_table` that matches Qualcomm SoC PMIC GLINK nodes like `qcom,pmic-glink` or `qcom,glymur-pmic-glink`. This makes sense, as it leverages Qualcomm's PDR and RPMSG (GLINK) to ADSP. But hang on… I'm just curious: can user-space directly instantiate these auxiliary devices? It's been a while since I looked closely at this, so let's check. My understanding is that auxiliary devices don't typically have a user-space sysfs interface for creation – unlike virtual network devices, loopback interfaces, or USB gadgets. So I need to confirm this. I'd better double-check by searching the kernel source for auxiliary device creation.
26/2	2026/10/13 22:31	tool	grepper	0m Args: { "Expression": "auxiliary_device_add" } Results: { "Output": "\nFull output is too long, showing 200 out of 364 lines.\nUse more precise expression or PathPrefixes if possible.\n\nNumber of matching lines per file (50 files in total):\nDocumentation/driver-api/auxiliary_bus.rst:1\ndrivers/acpi/scan.c:1\ndrivers/base/auxiliary.c:6\ndrivers/clk/spacemit/ccu_common.c:1\ndrivers/clk/starfive/clk-starfive-jh7110-sys.c:1\ndrivers/firmware/qcom/qcom_qseecom.c:1\ndrivers/gpio/gpiolib-shared.c:1\ndrivers/gpu/drm/bridge/aux-bridge.c:1\ndrivers/gpu/drm/bridge/aux-hpd-bridge.c:1\ndrivers/gpu/drm/i915/gt/intel_gsc.c:1\ndrivers/gpu/drm/xe/xe_heci_gsc.c:1\ndrivers/gpu/drm/xe/xe_nvm.c:1\ndrivers/iio/adc/qcom-spmi-adc5-gen3.c:1\ndrivers/media/pci/intel/ipu6/ipu6-bus.c:1\ndrivers/misc/amd-sbi/tsi.c:1\ndrivers/misc/keba/cp500.c:5\ndrivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c:2\ndrivers/net/ethernet/amd/pds_core/auxbus.c:2\ndrivers/net/ethernet/broadcom/bnge/bnge_auxr.c:1\ndrivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c:1\ndrivers/net/ethernet/huawei/hinic3/hinic3_lld.c:1\ndrivers/net/ethernet/intel/i40e/i40e_client.c:1\ndrivers/net/ethernet/intel/ice/ice_idc.c:1\ndrivers/net/ethernet/intel/ice/ice_sf_eth.c:1\ndrivers/net/ethernet/intel/idpf/idpf_idc.c:2\ndrivers/net/ethernet/mellanox/mlx4/intf.c:1\ndrivers/net/ethernet/mellanox/mlx5/core/dev.c:1\ndrivers/net/ethernet/mellanox/mlx5/core/sf/dev/dev.c:1\ndrivers/net/ethernet/mellanox/mlxsw/core_linecard_dev.c:1\ndrivers/net/ethernet/microsoft/mana/mana_en.c:1\ndrivers/net/ethernet/pensando/ionic/ionic_aux.c:1\ndrivers/pci/pwrctrl/pci-pwrctrl-tc9563.c:1\ndrivers/peci/cpu.c:1\ndrivers/platform/arm64/huawei-gaokun-ec.c:1\ndrivers/platform/x86/intel/vsec.c:1\ndrivers/pmdomain/thead/th1520-pm-domains.c:1\ndrivers/remoteproc/qcom_common.c:1\ndrivers/reset/core.c:1\ndrivers/reset/reset-npcm.c:1\ndrivers/soc/cirrus/soc-ep93xx.c:1\ndrivers/soc/qcom/pmic_glink.c:1\ndrivers/soundwire/intel_init.c:1\ndrivers/staging/media/ipu7/ipu7-bus.c:1\ndrivers/usb/misc/usb-ljca.c:1\ndrivers/usb/misc/usbio.c:1\ninclude/linux/auxiliary_bus.h:4\nrust/kernel/auxiliary.rs:1\nsound/soc/qcom/qdsp6/q6usb.c:1\nsound/soc/sdca/sdca_function_device.c:1\nsound/soc/sof/sof-client.c:1\n\nDocumentation/driver-api/auxiliary_bus.rst=19=Auxiliary Device Creation\n--\nDocumentation/driver-api/auxiliary_bus.rst-25-.. kernel-doc:: drivers/base/auxiliary.c\nDocumentation/driver-api/auxiliary_bus.rst:26: :identifiers: auxiliary_device_init __auxiliary_device_add\nDocumentation/driver-api/auxiliary_bus.rst-27-\n--\ndrivers/acpi/scan.c=2207=static void acpi_create_video_bus_device(struct acpi_device adev,\n--\ndrivers/acpi/scan.c-2231-\tACPI_COMPANION_SET(\u0026aux_dev-\u003edev, adev);\ndrivers/acpi/scan.c:2232:\tif (__auxiliary_device_add(aux_dev, \"acpi\"))\ndrivers/acpi/scan.c-2233-\t\tauxiliary_device_uninit(aux_dev);\n--\ndrivers/base/auxiliary.c-110- The parent device then registers the auxiliary_device by calling\ndrivers/base/auxiliary.c:111: * auxiliary_device_init(), and then auxiliary_device_add(), with the pointer\ndrivers/base/auxiliary.c-112- * to the auxdev member of the above structure. The parent provides a name for\n--\ndrivers/base/auxiliary.c=294=EXPORT_SYMBOL_GPL(auxiliary_device_init);\n--\ndrivers/base/auxiliary.c-296-/*\ndrivers/base/auxiliary.c:297: __auxiliary_device_add - add an auxiliary bus device\ndrivers/base/auxiliary.c-298- * @auxdev: auxiliary bus device to add to the bus\n--\ndrivers/base/auxiliary.c-309- \ndrivers/base/auxiliary.c:310: The expectation is that users will call the \"auxiliary_device_add\" macro so\ndrivers/base/auxiliary.c-311- * that the caller's KBUILD_MODNAME is automatically inserted for the modname\n--\ndrivers/base/auxiliary.c-314- /\ndrivers/base/auxiliary.c:315:int __auxiliary_device_add(struct auxiliary_device auxdev, const char modname)\ndrivers/base/auxiliary.c-316-{\n--\ndrivers/base/auxiliary.c-336-}\ndrivers/base/auxiliary.c:337:EXPORT_SYMBOL_GPL(__auxiliary_device_add);\ndrivers/base/auxiliary.c-338-\n--\ndrivers/base/auxiliary.c=408=struct auxiliary_device auxiliary_device_create(struct device dev,\n--\ndrivers/base/auxiliary.c-434-\ndrivers/base/auxiliary.c:435:\tret = __auxiliary_device_add(auxdev, modname);\ndrivers/base/auxiliary.c-436-\tif (ret) {\n--\ndrivers/clk/spacemit/ccu_common.c=82=static int spacemit_ccu_reset_register(struct device dev,\n--\ndrivers/clk/spacemit/ccu_common.c-113-\ndrivers/clk/spacemit/ccu_common.c:114:\tret = auxiliary_device_add(adev);\ndrivers/clk/spacemit/ccu_common.c-115-\tif (ret) {\n--\ndrivers/clk/starfive/clk-starfive-jh7110-sys.c=342=int jh7110_reset_controller_register(struct jh71x0_clk_priv priv,\n--\ndrivers/clk/starfive/clk-starfive-jh7110-sys.c-365-\ndrivers/clk/starfive/clk-starfive-jh7110-sys.c:366:\tret = auxiliary_device_add(adev);\ndrivers/clk/starfive/clk-starfive-jh7110-sys.c-367-\tif (ret) {\n--\ndrivers/firmware/qcom/qcom_qseecom.c=38=static int qseecom_client_register(struct platform_device qseecom_dev,\n--\ndrivers/firmware/qcom/qcom_qseecom.c-67-\ndrivers/firmware/qcom/qcom_qseecom.c:68:\tret = auxiliary_device_add(\u0026client-\u003eaux_dev);\ndrivers/firmware/qcom/qcom_qseecom.c-69-\tif (ret) {\n--\ndrivers/gpio/gpiolib-shared.c=314=static int gpio_shared_make_adev(struct gpio_device gdev,\n--\ndrivers/gpio/gpiolib-shared.c-334-\ndrivers/gpio/gpiolib-shared.c:335:\tret = auxiliary_device_add(adev);\ndrivers/gpio/gpiolib-shared.c-336-\tif (ret) {\n--\ndrivers/gpu/drm/bridge/aux-bridge.c=47=int drm_aux_bridge_register(struct device parent)\n--\ndrivers/gpu/drm/bridge/aux-bridge.c-76-\ndrivers/gpu/drm/bridge/aux-bridge.c:77:\tret = auxiliary_device_add(adev);\ndrivers/gpu/drm/bridge/aux-bridge.c-78-\tif (ret) {\n--\ndrivers/gpu/drm/bridge/aux-hpd-bridge.c=103=int devm_drm_dp_hpd_bridge_add(struct device dev, struct auxiliary_device adev)\n--\ndrivers/gpu/drm/bridge/aux-hpd-bridge.c-106-\ndrivers/gpu/drm/bridge/aux-hpd-bridge.c:107:\tret = auxiliary_device_add(adev);\ndrivers/gpu/drm/bridge/aux-hpd-bridge.c-108-\tif (ret)\n--\ndrivers/gpu/drm/i915/gt/intel_gsc.c=152=static void gsc_init_one(struct drm_i915_private i915, struct intel_gsc gsc,\n--\ndrivers/gpu/drm/i915/gt/intel_gsc.c-251-\ndrivers/gpu/drm/i915/gt/intel_gsc.c:252:\tret = auxiliary_device_add(aux_dev);\ndrivers/gpu/drm/i915/gt/intel_gsc.c-253-\tif (ret \u003c 0) {\n--\ndrivers/gpu/drm/xe/xe_heci_gsc.c=126=static int heci_gsc_add_device(struct xe_device xe, const struct heci_gsc_def def)\n--\ndrivers/gpu/drm/xe/xe_heci_gsc.c-159-\theci_gsc-\u003eadev = adev; /* needed by the notifier /\ndrivers/gpu/drm/xe/xe_heci_gsc.c:160:\tret = auxiliary_device_add(aux_dev);\ndrivers/gpu/drm/xe/xe_heci_gsc.c-161-\tif (ret \u003c 0) {\n--\ndrivers/gpu/drm/xe/xe_nvm.c=131=int xe_nvm_init(struct xe_device xe)\n--\ndrivers/gpu/drm/xe/xe_nvm.c-181-\ndrivers/gpu/drm/xe/xe_nvm.c:182:\tret = auxiliary_device_add(aux_dev);\ndrivers/gpu/drm/xe/xe_nvm.c-183-\tif (ret) {\n--\ndrivers/iio/adc/qcom-spmi-adc5-gen3.c=613=static int adc5_gen3_add_aux_tm_device(struct adc5_chip adc)\n--\ndrivers/iio/adc/qcom-spmi-adc5-gen3.c-653-\ndrivers/iio/adc/qcom-spmi-adc5-gen3.c:654:\tret = auxiliary_device_add(\u0026aux_device-\u003eaux_dev);\ndrivers/iio/adc/qcom-spmi-adc5-gen3.c-655-\tif (ret)\n--\ndrivers/media/pci/intel/ipu6/ipu6-bus.c=124=int ipu6_bus_add_device(struct ipu6_bus_device adev)\n--\ndrivers/media/pci/intel/ipu6/ipu6-bus.c-128-\ndrivers/media/pci/intel/ipu6/ipu6-bus.c:129:\tret = auxiliary_device_add(auxdev);\ndrivers/media/pci/intel/ipu6/ipu6-bus.c-130-\tif (ret) {\n--\ndrivers/misc/amd-sbi/tsi.c=70=static int sbtsi_create_hwmon_adev(struct device dev, u8 dev_addr)\n--\ndrivers/misc/amd-sbi/tsi.c-89-\ndrivers/misc/amd-sbi/tsi.c:90:\tret = __auxiliary_device_add(adev, AMD_SBTSI_ADEV);\ndrivers/misc/amd-sbi/tsi.c-91-\tif (ret) {\n--\ndrivers/misc/keba/cp500.c=334=static int cp500_register_i2c(struct cp500 cp500)\n--\ndrivers/misc/keba/cp500.c-364-\t}\ndrivers/misc/keba/cp500.c:365:\tret = __auxiliary_device_add(\u0026cp500-\u003ei2c-\u003eauxdev, \"keba\");\ndrivers/misc/keba/cp500.c-366-\tif (ret) {\n--\ndrivers/misc/keba/cp500.c=384=static int cp500_register_spi(struct cp500 cp500, u8 esc_type)\n--\ndrivers/misc/keba/cp500.c-422-\t}\ndrivers/misc/keba/cp500.c:423:\tret = __auxiliary_device_add(\u0026cp500-\u003espi-\u003eauxdev, \"keba\");\ndrivers/misc/keba/cp500.c-424-\tif (ret) {\n--\ndrivers/misc/keba/cp500.c=442=static int cp500_register_fan(struct cp500 cp500)\n--\ndrivers/misc/keba/cp500.c-470-\t}\ndrivers/misc/keba/cp500.c:471:\tret = __auxiliary_device_add(\u0026cp500-\u003efan-\u003eauxdev, \"keba\");\ndrivers/misc/keba/cp500.c-472-\tif (ret) {\n--\ndrivers/misc/keba/cp500.c=490=static int cp500_register_batt(struct cp500 cp500)\n--\ndrivers/misc/keba/cp500.c-518-\t}\ndrivers/misc/keba/cp500.c:519:\tret = __auxiliary_device_add(\u0026cp500-\u003ebatt-\u003eauxdev, \"keba\");\ndrivers/misc/keba/cp500.c-520-\tif (ret) {\n--\ndrivers/misc/keba/cp500.c=538=static int cp500_register_uart(struct cp500 cp500,\n--\ndrivers/misc/keba/cp500.c-567-\t}\ndrivers/misc/keba/cp500.c:568:\tret = __auxiliary_device_add(\u0026(uart)-\u003eauxdev, \"keba\");\ndrivers/misc/keba/cp500.c-569-\tif (ret) {\n--\ndrivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c=32=static int gp_aux_bus_probe(struct pci_dev pdev, const struct pci_device_id id)\n--\ndrivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c-64-\ndrivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c:65:\tretval = auxiliary_device_add(\u0026aux_bus-\u003eaux_device_wrapper[0]-\u003eaux_dev);\ndrivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c-66-\tif (retval)\n--\ndrivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c-102-\ndrivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c:103:\tretval = auxiliary_device_add(\u0026aux_bus-\u003eaux_device_wrapper[1]-\u003eaux_dev);\ndrivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c-104-\tif (retval)\n--\ndrivers/net/ethernet/amd/pds_core/auxbus.c=134=static struct pds_auxiliary_dev pdsc_auxbus_dev_register(struct pdsc cf,\n--\ndrivers/net/ethernet/amd/pds_core/auxbus.c-163-\ndrivers/net/ethernet/amd/pds_core/auxbus.c:164:\terr = auxiliary_device_add(aux_dev);\ndrivers/net/ethernet/amd/pds_core/auxbus.c-165-\tif (err) {\ndrivers/net/ethernet/amd/pds_core/auxbus.c:166:\t\tdev_warn(cf-\u003edev, \"auxiliary_device_add of %s failed: %pe\\n\",\ndrivers/net/ethernet/amd/pds_core/auxbus.c-167-\t\t\t name, ERR_PTR(err));\n--\ndrivers/net/ethernet/broadcom/bnge/bnge_auxr.c=186=void bnge_rdma_aux_device_add(struct bnge_dev bd)\n--\ndrivers/net/ethernet/broadcom/bnge/bnge_auxr.c-194-\taux_dev = \u0026bd-\u003eaux_priv-\u003eaux_dev;\ndrivers/net/ethernet/broadcom/bnge/bnge_auxr.c:195:\trc = auxiliary_device_add(aux_dev);\ndrivers/net/ethernet/broadcom/bnge/bnge_auxr.c-196-\tif (rc) {\n--\ndrivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c=525=void bnxt_aux_devices_add(struct bnxt bp)\n--\ndrivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c-533-\t\t\taux_dev = \u0026bp-\u003eaux_priv[idx]-\u003eaux_dev;\ndrivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c:534:\t\t\trc = auxiliary_device_add(aux_dev);\ndrivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c-535-\t\t\tif (rc) {\n--\ndrivers/net/ethernet/huawei/hinic3/hinic3_lld.c=56=static struct hinic3_adev hinic3_add_one_adev(struct hinic3_hwdev hwdev,\n--\ndrivers/net/ethernet/huawei/hinic3/hinic3_lld.c-82-\ndrivers/net/ethernet/huawei/hinic3/hinic3_lld.c:83:\tret = auxiliary_device_add(\u0026hadev-\u003eadev);\ndrivers/net/ethernet/huawei/hinic3/hinic3_lld.c-84-\tif (ret) {\n--\ndrivers/net/ethernet/intel/i40e/i40e_client.c=287=static int i40e_register_auxiliary_dev(struct i40e_info ldev, const char name)\n--\ndrivers/net/ethernet/intel/i40e/i40e_client.c-319-\ndrivers/net/ethernet/intel/i40e/i40e_client.c:320:\tret = auxiliary_device_add(aux_dev);\ndrivers/net/ethernet/intel/i40e/i40e_client.c-321-\tif (ret) {\n--\ndrivers/net/ethernet/intel/ice/ice_idc.c=294=int ice_plug_aux_dev(struct ice_pf pf)\n--\ndrivers/net/ethernet/intel/ice/ice_idc.c-329-\ndrivers/net/ethernet/intel/ice/ice_idc.c:330:\tret = auxiliary_device_add(adev);\ndrivers/net/ethernet/intel/ice/ice_idc.c-331-\tif (ret) {\n--\ndrivers/net/ethernet/intel/ice/ice_sf_eth.c=260=ice_sf_eth_activate(struct ice_dynamic_port dyn_port,\n--\ndrivers/net/ethernet/intel/ice/ice_sf_eth.c-295-\ndrivers/net/ethernet/intel/ice/ice_sf_eth.c:296:\terr = auxiliary_device_add(\u0026sf_dev-\u003eadev);\ndrivers/net/ethernet/intel/ice/ice_sf_eth.c-297-\tif (err) {\n--\ndrivers/net/ethernet/intel/idpf/idpf_idc.c=55=static int idpf_plug_vport_aux_dev(struct iidc_rdma_core_dev_info cdev_info,\n--\ndrivers/net/ethernet/intel/idpf/idpf_idc.c-85-\ndrivers/net/ethernet/intel/idpf/idpf_idc.c:86:\tret = auxiliary_device_add(adev);\n\n" }
27/2	2026/10/13 22:31	llm	patch-evaluator	1m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 28190 output: 29 thoughts: 1209 Thoughts: Unreachable Code Analysis: Qualcomm Battery Manager on amd64 Okay, so I'm looking at this `qcom_battmgr.c` driver and immediately the dependency chain jumps out. It's built on top of `pmic_glink.c`, which is a platform driver. Specifically, `pmic_glink.power-supply` is created by `drivers/soc/qcom/pmic_glink.c`, the Qualcomm GLINK driver. The `pmic_glink` driver is tied to specific Qualcomm SoCs using the Device Tree: "qcom,glymur-pmic-glink," and so on. The question is, can this even probe on amd64 in a QEMU environment? The answer, as I expected, is a resounding no. QEMU for x86_64 doesn't emulate Qualcomm SoCs or the required Device Tree with `pmic-glink` entries. The code's Kconfig indicates `QCOM_PMIC_GLINK` has hard dependencies on `ARM64 \|\| COMPILE_TEST`. We're dealing with x86_64 and ACPI, not the Qualcomm DT. The hardware is the deal breaker too: Qualcomm's proprietary ARM64 hardware (GLINK/RPMSG coprocessor with ADSP firmware). It's found in their Snapdragon platforms. So we're talking about proprietary ARM64 hardware on laptops/phones; it's not present in the standard QEMU environment. Then I re-read the instructions, specifically the sections about reachability. The first point jumps out, “REACHABILITY IS THE PRIMARY GATE.” Fuzzing only works on code that executes in a standard virtualized environment. The second point, “Structurally unreachable hardware,” directly calls out: “Vendor-specific PCIe switches, SmartNICs, or GPU drivers... requiring physical ASIC/PCIe cards not emulated in standard QEMU.” We can see that the second point directly covers the Qualcomm PMIC GLINK coprocessor running ADSP firmware communicating over GLINK / RPMSG, because this requires special hardware. The prompt confirms what I suspect: "Target architecture: amd64" and the warning that the code path is "exclusive to architectures other than the target architecture." Therefore, I need to check if `qcom_battmgr.c` can be reached on amd64. The Kconfig in `drivers/soc/qcom/Kconfig` confirms `QCOM_PMIC_GLINK`'s dependence on `RPMSG`, `TYPEC`, `DRM`, `NET`, `OF`, and `ARM64 \|\| COMPILE_TEST`, along with various select statements. `drivers/power/supply/Kconfig` shows `BATTERY_QCOM_BATTMGR` depends on `QCOM_PMIC_GLINK`, which in turn creates the auxiliary device `pmic_glink.power-supply` which is created only by `pmic_glink.c`. The crucial part is the `pmic_glink_of_match[]` table, the Device Tree compatible strings: these are all Qualcomm Snapdragon ARM64 SoCs. This is the smoking gun! Even if I were somehow to force `CONFIG_OF` and `CONFIG_COMPILE_TEST` on x86, x86 VMs boot using ACPI (or PC BIOS), without an OF device tree matching these Qualcomm SoCs, and without the Qualcomm GLINK/RPMSG hardware/firmware. Therefore, on amd64, this code is structurally unreachable. It requires the Qualcomm hardware, the proprietary firmware and a specific ARM64 device tree. And even on ARM64, the GLINK coprocessor is not emulated in standard QEMU / GCE. This code is doubly unreachable on the target architecture, amd64. I'll do a quick search of the kernel tree to make absolutely certain there aren't any pseudo-devices or test harnesses, but based on what I see here, it's unreachable.
28/2	2026/10/13 22:32	tool	grepper	0m Args: { "Expression": "pmic_glink_power_supply\|qcom_battmgr" } Results: { "Output": "\nFull output is too long, showing 200 out of 477 lines.\nUse more precise expression or PathPrefixes if possible.\n\nNumber of matching lines per file (3 files in total):\nNext/merge.log:1\ndrivers/power/supply/Makefile:1\ndrivers/power/supply/qcom_battmgr.c:137\n\nNext/merge.log=16539=Merge made by the 'ort' strategy.\n--\nNext/merge.log-16581- drivers/power/supply/power_supply_sysfs.c \| 17 +\nNext/merge.log:16582: drivers/power/supply/qcom_battmgr.c \| 1 +\nNext/merge.log-16583- drivers/power/supply/qcom_smbx.c \| 102 ++++--\n--\ndrivers/power/supply/Makefile=39=obj-$(CONFIG_BATTERY_PMU)\t+= pmu_battery.o\ndrivers/power/supply/Makefile:40:obj-$(CONFIG_BATTERY_QCOM_BATTMGR)\t+= qcom_battmgr.o\ndrivers/power/supply/Makefile-41-obj-$(CONFIG_BATTERY_OLPC)\t+= olpc_battery.o\n--\ndrivers/power/supply/qcom_battmgr.c-22-\ndrivers/power/supply/qcom_battmgr.c:23:enum qcom_battmgr_variant {\ndrivers/power/supply/qcom_battmgr.c-24-\tQCOM_BATTMGR_SC8280XP,\n--\ndrivers/power/supply/qcom_battmgr.c-107-\ndrivers/power/supply/qcom_battmgr.c:108:struct qcom_battmgr_enable_request {\ndrivers/power/supply/qcom_battmgr.c-109-\tstruct pmic_glink_hdr hdr;\n--\ndrivers/power/supply/qcom_battmgr.c-115-\ndrivers/power/supply/qcom_battmgr.c:116:struct qcom_battmgr_property_request {\ndrivers/power/supply/qcom_battmgr.c-117-\tstruct pmic_glink_hdr hdr;\n--\ndrivers/power/supply/qcom_battmgr.c-122-\ndrivers/power/supply/qcom_battmgr.c:123:struct qcom_battmgr_update_request {\ndrivers/power/supply/qcom_battmgr.c-124-\tstruct pmic_glink_hdr hdr;\n--\ndrivers/power/supply/qcom_battmgr.c-127-\ndrivers/power/supply/qcom_battmgr.c:128:struct qcom_battmgr_charge_time_request {\ndrivers/power/supply/qcom_battmgr.c-129-\tstruct pmic_glink_hdr hdr;\n--\ndrivers/power/supply/qcom_battmgr.c-134-\ndrivers/power/supply/qcom_battmgr.c:135:struct qcom_battmgr_discharge_time_request {\ndrivers/power/supply/qcom_battmgr.c-136-\tstruct pmic_glink_hdr hdr;\n--\ndrivers/power/supply/qcom_battmgr.c-141-\ndrivers/power/supply/qcom_battmgr.c:142:struct qcom_battmgr_charge_ctrl_request {\ndrivers/power/supply/qcom_battmgr.c-143-\tstruct pmic_glink_hdr hdr;\n--\ndrivers/power/supply/qcom_battmgr.c-148-\ndrivers/power/supply/qcom_battmgr.c:149:struct qcom_battmgr_message {\ndrivers/power/supply/qcom_battmgr.c-150-\tstruct pmic_glink_hdr hdr;\n--\ndrivers/power/supply/qcom_battmgr.c-242-\ndrivers/power/supply/qcom_battmgr.c:243:enum qcom_battmgr_unit {\ndrivers/power/supply/qcom_battmgr.c-244-\tQCOM_BATTMGR_UNIT_mWh = 0,\n--\ndrivers/power/supply/qcom_battmgr.c-247-\ndrivers/power/supply/qcom_battmgr.c:248:struct qcom_battmgr_info {\ndrivers/power/supply/qcom_battmgr.c-249-\tbool valid;\n--\ndrivers/power/supply/qcom_battmgr.c-271-\ndrivers/power/supply/qcom_battmgr.c:272:struct qcom_battmgr_status {\ndrivers/power/supply/qcom_battmgr.c-273-\tunsigned int status;\n--\ndrivers/power/supply/qcom_battmgr.c-288-\ndrivers/power/supply/qcom_battmgr.c:289:struct qcom_battmgr_ac {\ndrivers/power/supply/qcom_battmgr.c-290-\tbool online;\n--\ndrivers/power/supply/qcom_battmgr.c-292-\ndrivers/power/supply/qcom_battmgr.c:293:struct qcom_battmgr_usb {\ndrivers/power/supply/qcom_battmgr.c-294-\tbool online;\n--\ndrivers/power/supply/qcom_battmgr.c-302-\ndrivers/power/supply/qcom_battmgr.c:303:struct qcom_battmgr_wireless {\ndrivers/power/supply/qcom_battmgr.c-304-\tbool online;\n--\ndrivers/power/supply/qcom_battmgr.c-310-\ndrivers/power/supply/qcom_battmgr.c:311:struct qcom_battmgr {\ndrivers/power/supply/qcom_battmgr.c-312-\tstruct device dev;\n--\ndrivers/power/supply/qcom_battmgr.c-314-\ndrivers/power/supply/qcom_battmgr.c:315:\tenum qcom_battmgr_variant variant;\ndrivers/power/supply/qcom_battmgr.c-316-\n--\ndrivers/power/supply/qcom_battmgr.c-321-\ndrivers/power/supply/qcom_battmgr.c:322:\tenum qcom_battmgr_unit unit;\ndrivers/power/supply/qcom_battmgr.c-323-\n--\ndrivers/power/supply/qcom_battmgr.c-328-\ndrivers/power/supply/qcom_battmgr.c:329:\tstruct qcom_battmgr_info info;\ndrivers/power/supply/qcom_battmgr.c:330:\tstruct qcom_battmgr_status status;\ndrivers/power/supply/qcom_battmgr.c:331:\tstruct qcom_battmgr_ac ac;\ndrivers/power/supply/qcom_battmgr.c:332:\tstruct qcom_battmgr_usb usb;\ndrivers/power/supply/qcom_battmgr.c:333:\tstruct qcom_battmgr_wireless wireless;\ndrivers/power/supply/qcom_battmgr.c-334-\n--\ndrivers/power/supply/qcom_battmgr.c-343-\ndrivers/power/supply/qcom_battmgr.c:344:static int qcom_battmgr_request(struct qcom_battmgr battmgr, void data, size_t len)\ndrivers/power/supply/qcom_battmgr.c-345-{\n--\ndrivers/power/supply/qcom_battmgr.c-363-\ndrivers/power/supply/qcom_battmgr.c:364:static int qcom_battmgr_request_property(struct qcom_battmgr battmgr, int opcode,\ndrivers/power/supply/qcom_battmgr.c-365-\t\t\t\t\t int property, u32 value)\ndrivers/power/supply/qcom_battmgr.c-366-{\ndrivers/power/supply/qcom_battmgr.c:367:\tstruct qcom_battmgr_property_request request = {\ndrivers/power/supply/qcom_battmgr.c-368-\t\t.hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),\n--\ndrivers/power/supply/qcom_battmgr.c-375-\ndrivers/power/supply/qcom_battmgr.c:376:\treturn qcom_battmgr_request(battmgr, \u0026request, sizeof(request));\ndrivers/power/supply/qcom_battmgr.c-377-}\ndrivers/power/supply/qcom_battmgr.c-378-\ndrivers/power/supply/qcom_battmgr.c:379:static int qcom_battmgr_update_status(struct qcom_battmgr battmgr)\ndrivers/power/supply/qcom_battmgr.c-380-{\ndrivers/power/supply/qcom_battmgr.c:381:\tstruct qcom_battmgr_update_request request = {\ndrivers/power/supply/qcom_battmgr.c-382-\t\t.hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),\n--\ndrivers/power/supply/qcom_battmgr.c-387-\ndrivers/power/supply/qcom_battmgr.c:388:\treturn qcom_battmgr_request(battmgr, \u0026request, sizeof(request));\ndrivers/power/supply/qcom_battmgr.c-389-}\ndrivers/power/supply/qcom_battmgr.c-390-\ndrivers/power/supply/qcom_battmgr.c:391:static int qcom_battmgr_update_info(struct qcom_battmgr battmgr)\ndrivers/power/supply/qcom_battmgr.c-392-{\ndrivers/power/supply/qcom_battmgr.c:393:\tstruct qcom_battmgr_update_request request = {\ndrivers/power/supply/qcom_battmgr.c-394-\t\t.hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),\n--\ndrivers/power/supply/qcom_battmgr.c-399-\ndrivers/power/supply/qcom_battmgr.c:400:\treturn qcom_battmgr_request(battmgr, \u0026request, sizeof(request));\ndrivers/power/supply/qcom_battmgr.c-401-}\ndrivers/power/supply/qcom_battmgr.c-402-\ndrivers/power/supply/qcom_battmgr.c:403:static int qcom_battmgr_update_charge_time(struct qcom_battmgr battmgr)\ndrivers/power/supply/qcom_battmgr.c-404-{\ndrivers/power/supply/qcom_battmgr.c:405:\tstruct qcom_battmgr_charge_time_request request = {\ndrivers/power/supply/qcom_battmgr.c-406-\t\t.hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),\n--\ndrivers/power/supply/qcom_battmgr.c-412-\ndrivers/power/supply/qcom_battmgr.c:413:\treturn qcom_battmgr_request(battmgr, \u0026request, sizeof(request));\ndrivers/power/supply/qcom_battmgr.c-414-}\ndrivers/power/supply/qcom_battmgr.c-415-\ndrivers/power/supply/qcom_battmgr.c:416:static int qcom_battmgr_update_discharge_time(struct qcom_battmgr battmgr)\ndrivers/power/supply/qcom_battmgr.c-417-{\ndrivers/power/supply/qcom_battmgr.c:418:\tstruct qcom_battmgr_discharge_time_request request = {\ndrivers/power/supply/qcom_battmgr.c-419-\t\t.hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),\n--\ndrivers/power/supply/qcom_battmgr.c-425-\ndrivers/power/supply/qcom_battmgr.c:426:\treturn qcom_battmgr_request(battmgr, \u0026request, sizeof(request));\ndrivers/power/supply/qcom_battmgr.c-427-}\n--\ndrivers/power/supply/qcom_battmgr.c=429=static const u8 sm8350_bat_prop_map[] = {\n--\ndrivers/power/supply/qcom_battmgr.c-454-\ndrivers/power/supply/qcom_battmgr.c:455:static int qcom_battmgr_bat_sm8350_update(struct qcom_battmgr battmgr,\ndrivers/power/supply/qcom_battmgr.c-456-\t\t\t\t\t enum power_supply_property psp)\n--\ndrivers/power/supply/qcom_battmgr.c-466-\tmutex_lock(\u0026battmgr-\u003elock);\ndrivers/power/supply/qcom_battmgr.c:467:\tret = qcom_battmgr_request_property(battmgr, BATTMGR_BAT_PROPERTY_GET, prop, 0);\ndrivers/power/supply/qcom_battmgr.c-468-\tmutex_unlock(\u0026battmgr-\u003elock);\n--\ndrivers/power/supply/qcom_battmgr.c-472-\ndrivers/power/supply/qcom_battmgr.c:473:static int qcom_battmgr_bat_sc8280xp_update(struct qcom_battmgr battmgr,\ndrivers/power/supply/qcom_battmgr.c-474-\t\t\t\t\t enum power_supply_property psp)\n--\ndrivers/power/supply/qcom_battmgr.c-480-\tif (!battmgr-\u003einfo.valid) {\ndrivers/power/supply/qcom_battmgr.c:481:\t\tret = qcom_battmgr_update_info(battmgr);\ndrivers/power/supply/qcom_battmgr.c-482-\t\tif (ret \u003c 0)\n--\ndrivers/power/supply/qcom_battmgr.c-486-\ndrivers/power/supply/qcom_battmgr.c:487:\tret = qcom_battmgr_update_status(battmgr);\ndrivers/power/supply/qcom_battmgr.c-488-\tif (ret \u003c 0)\n--\ndrivers/power/supply/qcom_battmgr.c-491-\tif (psp == POWER_SUPPLY_PROP_TIME_TO_FULL_AVG) {\ndrivers/power/supply/qcom_battmgr.c:492:\t\tret = qcom_battmgr_update_charge_time(battmgr);\ndrivers/power/supply/qcom_battmgr.c-493-\t\tif (ret \u003c 0) {\n--\ndrivers/power/supply/qcom_battmgr.c-499-\tif (psp == POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG) {\ndrivers/power/supply/qcom_battmgr.c:500:\t\tret = qcom_battmgr_update_discharge_time(battmgr);\ndrivers/power/supply/qcom_battmgr.c-501-\t\tif (ret \u003c 0) {\n--\ndrivers/power/supply/qcom_battmgr.c-511-\ndrivers/power/supply/qcom_battmgr.c:512:static int qcom_battmgr_bat_get_property(struct power_supply psy,\ndrivers/power/supply/qcom_battmgr.c-513-\t\t\t\t\t enum power_supply_property psp,\n--\ndrivers/power/supply/qcom_battmgr.c-515-{\ndrivers/power/supply/qcom_battmgr.c:516:\tstruct qcom_battmgr battmgr = power_supply_get_drvdata(psy);\ndrivers/power/supply/qcom_battmgr.c:517:\tenum qcom_battmgr_unit unit = battmgr-\u003eunit;\ndrivers/power/supply/qcom_battmgr.c-518-\tint ret;\n--\ndrivers/power/supply/qcom_battmgr.c-524-\t battmgr-\u003evariant == QCOM_BATTMGR_X1E80100)\ndrivers/power/supply/qcom_battmgr.c:525:\t\tret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);\ndrivers/power/supply/qcom_battmgr.c-526-\telse\ndrivers/power/supply/qcom_battmgr.c:527:\t\tret = qcom_battmgr_bat_sm8350_update(battmgr, psp);\ndrivers/power/supply/qcom_battmgr.c-528-\tif (ret \u003c 0)\n--\ndrivers/power/supply/qcom_battmgr.c-661-\ndrivers/power/supply/qcom_battmgr.c:662:static int qcom_battmgr_set_charge_control(struct qcom_battmgr battmgr,\ndrivers/power/supply/qcom_battmgr.c-663-\t\t\t\t\t u32 target_soc, u32 delta_soc)\ndrivers/power/supply/qcom_battmgr.c-664-{\ndrivers/power/supply/qcom_battmgr.c:665:\tstruct qcom_battmgr_charge_ctrl_request request = {\ndrivers/power/supply/qcom_battmgr.c-666-\t\t.hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR),\n--\ndrivers/power/supply/qcom_battmgr.c-673-\ndrivers/power/supply/qcom_battmgr.c:674:\treturn qcom_battmgr_request(battmgr, \u0026request, sizeof(request));\ndrivers/power/supply/qcom_battmgr.c-675-}\ndrivers/power/supply/qcom_battmgr.c-676-\ndrivers/power/supply/qcom_battmgr.c:677:static int qcom_battmgr_set_charge_start_threshold(struct qcom_battmgr battmgr, int start_soc)\ndrivers/power/supply/qcom_battmgr.c-678-{\n--\ndrivers/power/supply/qcom_battmgr.c-699-\tmutex_lock(\u0026battmgr-\u003elock);\ndrivers/power/supply/qcom_battmgr.c:700:\tret = qcom_battmgr_set_charge_control(battmgr, target_soc, delta_soc);\ndrivers/power/supply/qcom_battmgr.c-701-\tmutex_unlock(\u0026battmgr-\u003elock);\n--\n\n" }
29/2	2026/10/13 22:32	llm	patch-evaluator	0m Model: gemini-3.8-flash Args: null Results: null Tokens: input: 35032 output: 150 thoughts: 540 Thoughts: Analysis of Reachability for Fuzzing Okay, let's break this down. My primary concern here is determining if the modified code, specifically related to `qcom_battmgr`, is actually reachable within our standard fuzzing environment. I know `qcom_battmgr` is instantiated solely through `pmic_glink.c`, which, in turn, is an OF platform driver tied to Qualcomm SoC compatible strings. This is a crucial starting point. Given that our target architecture is amd64, the situation becomes even clearer. We know `QCOM_PMIC_GLINK` has a dependency on `COMPILE_TEST` when not on an ARM64 system. Even if it compiles with `COMPILE_TEST` active, the driver relies on specific Qualcomm Device Tree bindings and communication with the Qualcomm ADSP coprocessor through rpmsg, specifically the `PMIC_RTR_ADSP_APPS` channel. None of these elements are present or emulated in our typical amd64 QEMU/GCE environments. This is a hard blocker. Now, referring back to the instructions, section 2 makes it very explicit. Reachability is the deciding factor. Since the code is structurally unreachable on amd64, and the hardware dependencies are not simulated (Qualcomm ARM64 SoCs, Device Tree, Qualcomm ADSP coprocessor and its GLINK/RPMSG communication), fuzzing this code is pointless. The instructions specifically call out examples that are analogous, such as vendor-specific hardware or execution paths that are triggered by hardware events that don't exist in our test environment. This situation falls squarely into the "structurally unreachable" category, and so the decision is clear. Therefore, the `WorthFuzzing` flag absolutely must be `false`. For the `set-results` invocation, I'll structure the arguments as follows: * `WorthFuzzing`: `false` * `FocusSymbols`: `[]` (empty list, because the code is unreachable) * `EnableConfigs`: `[]` (empty list, because the code is unreachable) * `Reasoning`: "The `qcom_battmgr` code, instantiated via `pmic_glink.c`, requires Qualcomm ARM64 SoCs, Qualcomm-specific Device Tree bindings, and communication with a Qualcomm ADSP coprocessor via GLINK/RPMSG (`PMIC_RTR_ADSP_APPS`). These components are not emulated or available in our standard amd64 QEMU/GCE virtualized testing environments, making the code structurally unreachable." Let's proceed with the `set-results` invocation.
30/2	2026/10/13 22:32	tool	set-results	0m Args: { "EnableConfigs": [], "FocusSymbols": [], "Reasoning": "The patch modifies drivers/power/supply/qcom_battmgr.c, which is a Qualcomm-specific PMIC GLINK battery manager driver. It binds to an auxiliary device instantiated by the pmic_glink platform driver, which relies on Qualcomm ARM64 SoC device trees and communication over Qualcomm GLINK/RPMSG with the ADSP coprocessor. On the target architecture (amd64), as well as in standard QEMU/GCE virtualized environments, the requisite hardware and coprocessor firmware are not present or emulated, making the modified code structurally unreachable.", "WorthFuzzing": false } Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch modifies drivers/power/supply/qcom_battmgr.c, which is a Qualcomm-specific PMIC GLINK battery manager driver. It binds to an auxiliary device instantiated by the pmic_glink platform driver, which relies on Qualcomm ARM64 SoC device trees and communication over Qualcomm GLINK/RPMSG with the ADSP coprocessor. On the target architecture (amd64), as well as in standard QEMU/GCE virtualized environments, the requisite hardware and coprocessor firmware are not present or emulated, making the modified code structurally unreachable.", "WorthFuzzing": false }
31/1	2026/10/13 22:32	action	If	0m Args: { "WorthFuzzing": false } Results: null

LLM Calls Summary:
Total Calls	Total Tokens	Avg Tokens	Total Duration (Seconds)	Avg Duration (Seconds)

Tool Calls Summary:
Total Calls	Total Duration (Seconds)	Avg Duration (Seconds)