| Seq | Timestamp | Type | Name | Duration |
|---|---|---|---|---|
| 0/0 | 2026/08/31 09:42 | flow | patch-triage |
2mArgs:null Results: {
"EnableConfigs": [
"BONDING",
"INET",
"NET_CORE"
],
"FocusSymbols": [
"bond_enslave",
"bond_release",
"bond_opt_tryset_rtnl",
"bond_create",
"bond_change_active_slave",
"bond_peer_notify_work_rearm"
],
"KMSANReasoning": "The patch removes the assignment `delta_in_ticks = 1;` prior to branching to `re_arm` when `rtnl_trylock()` fails in `bond_activebackup_arp_mon()`. \n\nAnalysis for memory sanitizers:\n1. KMSAN applicability: The variable `delta_in_ticks` is already initialized at the start of the function (`delta_in_ticks = msecs_to_jiffies(bond-\u003eparams.arp_interval)`). The patch does not introduce, read, or expose any uninitialized stack, heap, or page memory, nor does it pass uninitialized data or padding to userspace (no `copy_to_user`, netlink attributes, ioctl data, etc.).\n2. KASAN / Lockdep applicability: The change purely adjusts the delayed work rescheduling interval upon failing to acquire the RTNL trylock in the bonding ARP monitor. Standard testing with KASAN and LOCKDEP is sufficient to monitor any concurrency, locking, or object lifetime issues.\n\nTherefore, dedicated KMSAN fuzzing is not required.",
"NeedsKMSAN": false,
"Reasoning": "The patch modifies the delayed work re-arming behavior in `bond_activebackup_arp_mon` within the bonding driver (`CONFIG_BONDING`). When failing to acquire RTNL lock during slave notification / peer notification in active-backup ARP monitoring, it no longer forcibly resets `delta_in_ticks` to 1. This affects the core execution flow and timing of the bonding driver's periodic ARP monitor, which is a software network interface readily exercisable in virtualized environments.",
"WorthFuzzing": true
} |
| 1/1 | 2026/08/31 09:42 | action | read-patch-diff |
0mArgs:null Results: {
"PatchDiff": "commit 4b920d812e56342ff57f1da1ec3a8842c16454ab\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Mon Aug 31 09:42:44 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c\nindex ef9eb0c53c661..c23cf18a996ab 100644\n--- a/drivers/net/bonding/bond_main.c\n+++ b/drivers/net/bonding/bond_main.c\n@@ -3871,10 +3871,8 @@ static void bond_activebackup_arp_mon(struct bonding *bond)\n \trcu_read_unlock();\n \n \tif (READ_ONCE(bond-\u003esend_peer_notif) || should_notify_rtnl) {\n-\t\tif (!rtnl_trylock()) {\n-\t\t\tdelta_in_ticks = 1;\n+\t\tif (!rtnl_trylock())\n \t\t\tgoto re_arm;\n-\t\t}\n \n \t\tif (bond-\u003esend_peer_notif)\n \t\t\tbond_peer_notify_may_events(bond, true);\n"
} |
| 2/1 | 2026/08/31 09:42 | agent | patch-evaluator |
1mModel:core Args: null Results: {
"EnableConfigs": [
"BONDING",
"INET",
"NET_CORE"
],
"FocusSymbols": [
"bond_enslave",
"bond_release",
"bond_opt_tryset_rtnl",
"bond_create",
"bond_change_active_slave",
"bond_peer_notify_work_rearm"
],
"Reasoning": "The patch modifies the delayed work re-arming behavior in `bond_activebackup_arp_mon` within the bonding driver (`CONFIG_BONDING`). When failing to acquire RTNL lock during slave notification / peer notification in active-backup ARP monitoring, it no longer forcibly resets `delta_in_ticks` to 1. This affects the core execution flow and timing of the bonding driver's periodic ARP monitor, which is a software network interface readily exercisable in virtualized environments.",
"WorthFuzzing": true
}Instruction: You are an expert Linux kernel maintainer. Your job is to review a provided patch series and determine if it makes functional changes to the kernel that should be fuzzed. IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in your workspace. Do NOT rely on your internal knowledge of the kernel. You must actively use your code access tools to examine the actual source code and confirm any assumptions. Return WorthFuzzing=false if the patch only contains: - Modifications to Documentation/, Kconfig files, or code comments. - Purely decorative changes, such as logging (e.g., pr_err, printk) or tracepoints. - Changes to numeric constants or macros that do not functionally alter execution flow. - Code paths that are impossible to reach in virtualized environments like GCE or QEMU, even when utilizing software-emulated hardware (e.g., usb gadget, mac80211_hwsim). - Code in vendor-specific PCIe switch, SmartNIC, or GPU drivers (e.g., mlxsw, pds_core, qed, ionic, amdgpu) that require physical PCIe hardware cards not emulated in standard QEMU. - Driver .remove, .shutdown, or pci_unregister_driver teardown callbacks (e.g., igb_remove) that are executed only during PCI hot-unplug or sysfs driver unbind operations. If it modifies reachable core kernel logic, drivers, or architectures, use your code search tools to verify the code can be executed, then return WorthFuzzing=true. When returning WorthFuzzing=true, you MUST ALSO: 1. Extract any specific kernel functions that should be heavily fuzzed into FocusSymbols. Avoid listing generic hot-path functions to prevent skewed test distributions. Prefer non-static, non-inlined API entrypoint functions over internal static helper functions (which are inlined by the compiler and do not have distinct symbol addresses). 2. Identify any specific CONFIG_ options required to properly test this new/modified feature. Go and look into the Kconfig files and check for ifdefs around the code, do not make assumptions. Also check "depends on" lines in Kconfig to include any non-standard parent subsystem configs needed for Kbuild to compile the code statically into vmlinux. List them in the EnableConfigs output array, and DO NOT add a '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: For your convenience, here is the diff of the changes:
commit 4b920d812e56342ff57f1da1ec3a8842c16454ab
Author: syz-cluster <triage@syzkaller.com>
Date: Mon Aug 31 09:42:44 2026 +0000
syz-cluster: applied patch under review
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index ef9eb0c53c661..c23cf18a996ab 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3871,10 +3871,8 @@ static void bond_activebackup_arp_mon(struct bonding *bond)
rcu_read_unlock();
if (READ_ONCE(bond->send_peer_notif) || should_notify_rtnl) {
- if (!rtnl_trylock()) {
- delta_in_ticks = 1;
+ if (!rtnl_trylock())
goto re_arm;
- }
if (bond->send_peer_notif)
bond_peer_notify_may_events(bond, true);
|
| 3/2 | 2026/08/31 09:42 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 2116 output: 40 thoughts: 80 Thoughts: Here's my analysis of this code change: **Analyzing the Bonding Driver ARP Monitoring Modification** Okay, so the modification is focused on `drivers/net/bonding/bond_main.c` within the `bond_activebackup_arp_mon` function. That immediately tells me this has to do with Active-Backup mode and how it handles ARP monitoring, which is a key component of that setup. I'll need to understand *exactly* what this ARP monitoring is doing in the original code to grasp the significance of the patch. My first step will be to dive into `drivers/net/bonding/bond_main.c` and focus on the `bond_activebackup_arp_mon` function. I'll probably start with a `read-file` or `grepper` call to get a quick overview of what that function does. Understanding the ARP monitoring logic is crucial – things like how it sends ARP requests, how it interprets the responses (or lack thereof), and how it triggers a failover are all important to understand what's been changed. I need to see what aspects of the bonding driver's active-backup behavior this patch is tweaking. |
| 4/2 | 2026/08/31 09:42 | tool | read-file |
0mArgs:{
"File": "drivers/net/bonding/bond_main.c",
"FirstLine": 3850,
"LineCount": 50
}Results: {
"Contents": "3850:\t\tif (!bond_has_slaves(bond))\n3851:\t\t\tgoto re_arm;\n3852:\t\n3853:\t\trcu_read_lock();\n3854:\t\n3855:\t\tif (bond_ab_arp_inspect(bond)) {\n3856:\t\t\trcu_read_unlock();\n3857:\t\n3858:\t\t\t/* Race avoidance with bond_close flush of workqueue */\n3859:\t\t\tif (!rtnl_trylock()) {\n3860:\t\t\t\tdelta_in_ticks = 1;\n3861:\t\t\t\tgoto re_arm;\n3862:\t\t\t}\n3863:\t\n3864:\t\t\tbond_ab_arp_commit(bond);\n3865:\t\n3866:\t\t\trtnl_unlock();\n3867:\t\t\trcu_read_lock();\n3868:\t\t}\n3869:\t\n3870:\t\tshould_notify_rtnl = bond_ab_arp_probe(bond);\n3871:\t\trcu_read_unlock();\n3872:\t\n3873:\t\tif (READ_ONCE(bond-\u003esend_peer_notif) || should_notify_rtnl) {\n3874:\t\t\tif (!rtnl_trylock())\n3875:\t\t\t\tgoto re_arm;\n3876:\t\n3877:\t\t\tif (bond-\u003esend_peer_notif)\n3878:\t\t\t\tbond_peer_notify_may_events(bond, true);\n3879:\t\n3880:\t\t\tif (should_notify_rtnl) {\n3881:\t\t\t\tbond_slave_state_notify(bond);\n3882:\t\t\t\tbond_slave_link_notify(bond);\n3883:\t\t\t}\n3884:\t\n3885:\t\t\trtnl_unlock();\n3886:\t\t}\n3887:\t\n3888:\tre_arm:\n3889:\t\tif (bond-\u003eparams.arp_interval)\n3890:\t\t\tqueue_delayed_work(bond-\u003ewq, \u0026bond-\u003earp_work, delta_in_ticks);\n3891:\t}\n3892:\t\n3893:\tstatic void bond_arp_monitor(struct work_struct *work)\n3894:\t{\n3895:\t\tstruct bonding *bond = container_of(work, struct bonding,\n3896:\t\t\t\t\t\t arp_work.work);\n3897:\t\n3898:\t\tif (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP)\n3899:\t\t\tbond_activebackup_arp_mon(bond);\n"
} |
| 5/2 | 2026/08/31 09:42 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 3174 output: 40 thoughts: 24 Thoughts: Okay, here's my interpretation of what's going through my mind, rendered in first person, keeping in mind I'm an expert and this is related to troubleshooting `bond_activebackup_arp_mon`: **Diving into the Code: Before Line 3850** Alright, let's get down to brass tacks. I need to understand the execution flow *before* line 3850 in `bond_activebackup_arp_mon`. That line is obviously a significant breakpoint, or possibly the location of an anomaly as an initial investigation step. I want to build a mental model of the code's behavior *leading up* to that point. I'm thinking: what functions are called? What data structures are initialized, or modified, and are particularly important? What are the key variables and their values during that execution period that I need to be concerned with? Are there conditional statements that could drastically change the path of execution leading up to that line, and if so, what are the relevant conditions? I'll probably start scanning the code, quickly, for obvious indicators: loops, function calls, variable assignments that seem particularly relevant, and conditions that might lead to different branches of code. I'm going to look for any obvious red flags, such as potential race conditions or unusual operations on shared resources. Knowing this tool's architecture, I'll be looking for configuration-related elements too, like what settings are loaded and how they impact the code flow. This initial pass will be more of a reconnaissance mission, just trying to get a feel for the lay of the land before I really drill down into the specifics. |
| 6/2 | 2026/08/31 09:43 | tool | read-file |
0mArgs:{
"File": "drivers/net/bonding/bond_main.c",
"FirstLine": 3830,
"LineCount": 30
}Results: {
"Contents": "3830:\t\tnew_slave-\u003elast_link_up = jiffies;\n3831:\t\trcu_assign_pointer(bond-\u003ecurrent_arp_slave, new_slave);\n3832:\t\n3833:\tcheck_state:\n3834:\t\tbond_for_each_slave_rcu(bond, slave, iter) {\n3835:\t\t\tif (slave-\u003eshould_notify || slave-\u003eshould_notify_link) {\n3836:\t\t\t\tshould_notify_rtnl = BOND_SLAVE_NOTIFY_NOW;\n3837:\t\t\t\tbreak;\n3838:\t\t\t}\n3839:\t\t}\n3840:\t\treturn should_notify_rtnl;\n3841:\t}\n3842:\t\n3843:\tstatic void bond_activebackup_arp_mon(struct bonding *bond)\n3844:\t{\n3845:\t\tbool should_notify_rtnl;\n3846:\t\tint delta_in_ticks;\n3847:\t\n3848:\t\tdelta_in_ticks = msecs_to_jiffies(bond-\u003eparams.arp_interval);\n3849:\t\n3850:\t\tif (!bond_has_slaves(bond))\n3851:\t\t\tgoto re_arm;\n3852:\t\n3853:\t\trcu_read_lock();\n3854:\t\n3855:\t\tif (bond_ab_arp_inspect(bond)) {\n3856:\t\t\trcu_read_unlock();\n3857:\t\n3858:\t\t\t/* Race avoidance with bond_close flush of workqueue */\n3859:\t\t\tif (!rtnl_trylock()) {\n"
} |
| 7/2 | 2026/08/31 09:43 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 4024 output: 28 thoughts: 755 Thoughts: **Analyzing a Bonding Driver Patch** Okay, let's dive into this patch. My immediate thought is to understand the "why" behind this change, especially the removal of `delta_in_ticks = 1`. I need to see the commit history or git log around this section to grasp the context. I see that `delta_in_ticks` was originally initialized to `msecs_to_jiffies(bond->params.arp_interval)`. Then, in the second `rtnl_trylock()` call, the line setting `delta_in_ticks = 1` was removed. That's the key: why was this removed? Looking at the code blocks, I see that if `rtnl_trylock()` fails in the first block, `delta_in_ticks` gets set to 1. This looks like a race avoidance mechanism, probably related to the workqueue flush in `bond_close`. However, in the second block, the assignment is gone! If `rtnl_trylock()` fails, shouldn't we still immediately re-arm in the second block? Now, `delta_in_ticks` could retain its previous value (`msecs_to_jiffies(...)`) or 1, depending on whether the first block was successful. Is this worth fuzzing? The bonding driver is a standard virtual network device, accessible via netlink/rtnl. It's a pure software driver, so yes, it is fuzzable in QEMU or GCE. I need to determine if this is a functional or non-functional change. Previously, if `rtnl_trylock()` failed in the second block, setting `delta_in_ticks` to 1 ensured immediate re-arming of the delayed work to retry the `rtnl_lock` and send peer/link notifications. Removing this might introduce a delay determined by the original arp_interval, rather than a more immediate retry. So, *why* was `delta_in_ticks = 1` removed? I need to check the git log or commit history for bonding arp mon to understand the rationale. My thought is `git log -n 5 drivers/net/bonding/bond_main.c` or use grepper if needed. I need to dig deeper. I need to understand the intent of the author. Let's check the Kconfig for BONDING as well, just to be sure. |
| 8/2 | 2026/08/31 09:43 | tool | grepper |
0mError:no matches Args: {
"Expression": "config BONDING",
"PathPrefix": "drivers/net/bonding"
}Results: {
"error": "no matches"
} |
| 9/2 | 2026/08/31 09:43 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 5331 output: 26 thoughts: 17 Thoughts: Okay, here's my take on those thoughts, framed as an expert's internal monologue: **Navigating the Network Bonding Configuration Landscape** Alright, so I need to get into the bonding configuration. My initial approach is to go straight to the usual suspects. My gut says the `drivers/net/bonding` directory is the most likely spot, that's where I'd expect to find the core bonding driver code, and the associated Kconfig files. If it's not there, the next logical move is to broaden the search and poke around in `drivers/net` more generally. That's a good starting point to locate the relevant Kconfig file(s). Let's start digging! |
| 10/2 | 2026/08/31 09:43 | tool | grepper |
0mArgs:{
"Expression": "config BONDING",
"PathPrefix": "drivers/net"
}Results: {
"Output": "drivers/net/Kconfig=39=if NET_CORE\ndrivers/net/Kconfig-40-\ndrivers/net/Kconfig:41:config BONDING\ndrivers/net/Kconfig-42-\ttristate \"Bonding driver support\"\n"
} |
| 11/2 | 2026/08/31 09:43 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 5595 output: 33 thoughts: 18 Thoughts: Here's a summary of my thinking process, written as if I were the one thinking: **Examining the Kernel Network Configuration** Okay, let's dive into this. I'm going to pull up the `drivers/net/Kconfig` file and take a look around line 41. I need to get a better understanding of how this particular network configuration is structured. I'm expecting to find some crucial options, perhaps related to a specific driver I'm researching or a general area that requires optimization. My goal is to quickly pinpoint the relevant configuration parameters and their dependencies. I'm anticipating some conditional logic, maybe some nested `if` statements based on architecture or other prerequisites. Ultimately, I want to form a mental map of this section of the Kconfig file. |
| 12/2 | 2026/08/31 09:43 | tool | read-file |
0mArgs:{
"File": "drivers/net/Kconfig",
"FirstLine": 35,
"LineCount": 30
}Results: {
"Contents": " 35:\t\thelp\n 36:\t\t You can say N here if you do not intend to use any of the\n 37:\t\t networking core drivers (i.e. VLAN, bridging, bonding, etc.)\n 38:\t\n 39:\tif NET_CORE\n 40:\t\n 41:\tconfig BONDING\n 42:\t\ttristate \"Bonding driver support\"\n 43:\t\tdepends on INET\n 44:\t\tdepends on TLS || TLS_DEVICE=n\n 45:\t\thelp\n 46:\t\t Say 'Y' or 'M' if you wish to be able to 'bond' multiple Ethernet\n 47:\t\t Channels together. This is called 'Etherchannel' by Cisco,\n 48:\t\t 'Trunking' by Sun, 802.3ad by the IEEE, and 'Bonding' in Linux.\n 49:\t\n 50:\t\t The driver supports multiple bonding modes to allow for both high\n 51:\t\t performance and high availability operation.\n 52:\t\n 53:\t\t Refer to \u003cfile:Documentation/networking/bonding.rst\u003e for more\n 54:\t\t information.\n 55:\t\n 56:\t\t To compile this driver as a module, choose M here: the module\n 57:\t\t will be called bonding.\n 58:\t\n 59:\tconfig DUMMY\n 60:\t\ttristate \"Dummy net driver support\"\n 61:\t\thelp\n 62:\t\t This is essentially a bit-bucket device (i.e. traffic you send to\n 63:\t\t this device is consigned into oblivion) with a configurable IP\n 64:\t\t address. It is most commonly used in order to make your currently\n"
} |
| 13/2 | 2026/08/31 09:43 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 6247 output: 30 thoughts: 478 Thoughts: **My Assessment of the Patch's Fuzzing Worthiness** Okay, let's dive in. First, I need to make sure I haven't missed any relevant configurations or symbols that might sway my decision. I should check for things like `NET_CORE`, `BONDING`, and `INET` to ensure I've got the full context. Now, let's apply the criteria. We need to rule out: Documentation/Kconfig changes, decorative stuff like logging, non-functional constant changes, unreachable code paths in virtualization, vendor-specific PCIe driver code requiring physical hardware, and teardown callbacks. Right, so this patch is modifying `bond_activebackup_arp_mon`. That's squarely in the core bonding driver (`CONFIG_BONDING`), and it's fiddling with the workqueue scheduling interval when `rtnl_trylock()` fails. The question is: is this worth fuzzing? Let's break it down. It changes the timing and execution logic of the ARP monitoring workqueue within the bonding driver. Crucially, bonding is a *software* virtual network device, right in the heart of core networking. I can easily instantiate it with rtnl/netlink, and it's *fully* reachable in environments like QEMU and GCE. Therefore, this one looks promising, so I'm setting `WorthFuzzing = true`. Now, the next step is to identify appropriate symbols. I need to find non-static, non-inlined API entrypoints – let's call them "FocusSymbols" – that are related to bonding ARP monitoring, or perhaps bonding netlink/rtnl interactions. I should probably focus on things like `bond_arp_monitor`, and look for non-static functions in `drivers/net/bonding/bond_main.c`, `bond_options.c`, or `bond_netlink.c`. I will run a grep for those functions and see what I can find. I might also try to get a better understanding of how the bonding ARP monitor is set up and triggered. This will lead me to appropriate test cases and potential fuzzing targets. |
| 14/2 | 2026/08/31 09:43 | tool | grepper |
0mArgs:{
"Expression": "bond_arp_monitor",
"PathPrefix": "drivers/net/bonding"
}Results: {
"Output": "drivers/net/bonding/bond_main.c=3843=static void bond_activebackup_arp_mon(struct bonding *bond)\n--\ndrivers/net/bonding/bond_main.c-3892-\ndrivers/net/bonding/bond_main.c:3893:static void bond_arp_monitor(struct work_struct *work)\ndrivers/net/bonding/bond_main.c-3894-{\n--\ndrivers/net/bonding/bond_main.c=4318=void bond_work_init_all(struct bonding *bond)\n--\ndrivers/net/bonding/bond_main.c-4327-\tINIT_DELAYED_WORK(\u0026bond-\u003emii_work, bond_mii_monitor);\ndrivers/net/bonding/bond_main.c:4328:\tINIT_DELAYED_WORK(\u0026bond-\u003earp_work, bond_arp_monitor);\ndrivers/net/bonding/bond_main.c-4329-\tINIT_DELAYED_WORK(\u0026bond-\u003ead_work, bond_3ad_state_machine_handler);\n"
} |
| 15/2 | 2026/08/31 09:43 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 7478 output: 30 thoughts: 35 Thoughts: Okay, here's my interpretation of those thoughts, summarized from my perspective as an expert in the field: **Assessing ARP Monitoring and Bonding Configuration** Alright, let's dive into this. I need to get a clear picture of how ARP monitoring interacts with bonding. I'm thinking about the specific parameters that *configure* and *enable* it within the bonding context. Things like the `arp_interval` – what's the frequency? And that `arp_ip_target` - which IP address are we using to probe? I'm trying to identify where these settings are defined. Beyond just the settings themselves, I want to trace how these settings *tie* into the bonding configuration process in general, and what manages the bonding process itself. Basically, how and where are we registering and managing bonds. I need to understand how the system orchestrates all of this, how it's set up and administered. I'm looking for a complete picture: the configuration points and the overall management workflow. |
| 16/2 | 2026/08/31 09:44 | tool | grepper |
0mArgs:{
"Expression": "bond_opt_init",
"PathPrefix": "drivers/net/bonding"
}Results: {
"Output": "drivers/net/bonding/bond_main.c=4583=static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd)\n--\ndrivers/net/bonding/bond_main.c-4647-\tcase SIOCBONDCHANGEACTIVE:\ndrivers/net/bonding/bond_main.c:4648:\t\tbond_opt_initstr(\u0026newval, slave_dev-\u003ename);\ndrivers/net/bonding/bond_main.c-4649-\t\tres = __bond_opt_set_notify(bond, BOND_OPT_ACTIVE_SLAVE,\n--\ndrivers/net/bonding/bond_main.c=6085=static int __init bond_check_params(struct bond_params *params)\n--\ndrivers/net/bonding/bond_main.c-6101-\tif (mode) {\ndrivers/net/bonding/bond_main.c:6102:\t\tbond_opt_initstr(\u0026newval, mode);\ndrivers/net/bonding/bond_main.c-6103-\t\tvalptr = bond_opt_parse(bond_opt_get(BOND_OPT_MODE), \u0026newval);\n--\ndrivers/net/bonding/bond_main.c-6117-\t\t} else {\ndrivers/net/bonding/bond_main.c:6118:\t\t\tbond_opt_initstr(\u0026newval, xmit_hash_policy);\ndrivers/net/bonding/bond_main.c-6119-\t\t\tvalptr = bond_opt_parse(bond_opt_get(BOND_OPT_XMIT_HASH),\n--\ndrivers/net/bonding/bond_main.c-6134-\t\t} else {\ndrivers/net/bonding/bond_main.c:6135:\t\t\tbond_opt_initstr(\u0026newval, lacp_rate);\ndrivers/net/bonding/bond_main.c-6136-\t\t\tvalptr = bond_opt_parse(bond_opt_get(BOND_OPT_LACP_RATE),\n--\ndrivers/net/bonding/bond_main.c-6147-\tif (ad_select) {\ndrivers/net/bonding/bond_main.c:6148:\t\tbond_opt_initstr(\u0026newval, ad_select);\ndrivers/net/bonding/bond_main.c-6149-\t\tvalptr = bond_opt_parse(bond_opt_get(BOND_OPT_AD_SELECT),\n--\ndrivers/net/bonding/bond_main.c-6224-\ndrivers/net/bonding/bond_main.c:6225:\tbond_opt_initval(\u0026newval, packets_per_slave);\ndrivers/net/bonding/bond_main.c-6226-\tif (!bond_opt_parse(bond_opt_get(BOND_OPT_PACKETS_PER_SLAVE), \u0026newval)) {\n--\ndrivers/net/bonding/bond_main.c-6306-\ndrivers/net/bonding/bond_main.c:6307:\t\tbond_opt_initstr(\u0026newval, arp_validate);\ndrivers/net/bonding/bond_main.c-6308-\t\tvalptr = bond_opt_parse(bond_opt_get(BOND_OPT_ARP_VALIDATE),\n--\ndrivers/net/bonding/bond_main.c-6320-\tif (arp_all_targets) {\ndrivers/net/bonding/bond_main.c:6321:\t\tbond_opt_initstr(\u0026newval, arp_all_targets);\ndrivers/net/bonding/bond_main.c-6322-\t\tvalptr = bond_opt_parse(bond_opt_get(BOND_OPT_ARP_ALL_TARGETS),\n--\ndrivers/net/bonding/bond_main.c-6362-\tif (primary \u0026\u0026 primary_reselect) {\ndrivers/net/bonding/bond_main.c:6363:\t\tbond_opt_initstr(\u0026newval, primary_reselect);\ndrivers/net/bonding/bond_main.c-6364-\t\tvalptr = bond_opt_parse(bond_opt_get(BOND_OPT_PRIMARY_RESELECT),\n--\ndrivers/net/bonding/bond_main.c-6376-\tif (fail_over_mac) {\ndrivers/net/bonding/bond_main.c:6377:\t\tbond_opt_initstr(\u0026newval, fail_over_mac);\ndrivers/net/bonding/bond_main.c-6378-\t\tvalptr = bond_opt_parse(bond_opt_get(BOND_OPT_FAIL_OVER_MAC),\n--\ndrivers/net/bonding/bond_main.c-6391-\ndrivers/net/bonding/bond_main.c:6392:\tbond_opt_initstr(\u0026newval, \"default\");\ndrivers/net/bonding/bond_main.c-6393-\tvalptr = bond_opt_parse(\n--\ndrivers/net/bonding/bond_main.c-6409-\ndrivers/net/bonding/bond_main.c:6410:\tbond_opt_initstr(\u0026newval, \"default\");\ndrivers/net/bonding/bond_main.c-6411-\tvalptr = bond_opt_parse(bond_opt_get(BOND_OPT_TLB_DYNAMIC_LB), \u0026newval);\n--\ndrivers/net/bonding/bond_netlink.c=167=static int bond_slave_changelink(struct net_device *bond_dev,\n--\ndrivers/net/bonding/bond_netlink.c-185-\t\t\t slave_dev-\u003ename, queue_id);\ndrivers/net/bonding/bond_netlink.c:186:\t\tbond_opt_initstr(\u0026newval, queue_id_str);\ndrivers/net/bonding/bond_netlink.c-187-\t\terr = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c=216=static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[],\n--\ndrivers/net/bonding/bond_netlink.c-230-\ndrivers/net/bonding/bond_netlink.c:231:\t\tbond_opt_initval(\u0026newval, mode);\ndrivers/net/bonding/bond_netlink.c-232-\t\terr = __bond_opt_set(bond, BOND_OPT_MODE, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-248-\t\t}\ndrivers/net/bonding/bond_netlink.c:249:\t\tbond_opt_initstr(\u0026newval, active_slave);\ndrivers/net/bonding/bond_netlink.c-250-\t\terr = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-257-\ndrivers/net/bonding/bond_netlink.c:258:\t\tbond_opt_initval(\u0026newval, miimon);\ndrivers/net/bonding/bond_netlink.c-259-\t\terr = __bond_opt_set(bond, BOND_OPT_MIIMON, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-266-\ndrivers/net/bonding/bond_netlink.c:267:\t\tbond_opt_initval(\u0026newval, updelay);\ndrivers/net/bonding/bond_netlink.c-268-\t\terr = __bond_opt_set(bond, BOND_OPT_UPDELAY, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-275-\ndrivers/net/bonding/bond_netlink.c:276:\t\tbond_opt_initval(\u0026newval, downdelay);\ndrivers/net/bonding/bond_netlink.c-277-\t\terr = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-284-\ndrivers/net/bonding/bond_netlink.c:285:\t\tbond_opt_initval(\u0026newval, delay);\ndrivers/net/bonding/bond_netlink.c-286-\t\terr = __bond_opt_set(bond, BOND_OPT_PEER_NOTIF_DELAY, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-306-\ndrivers/net/bonding/bond_netlink.c:307:\t\tbond_opt_initval(\u0026newval, arp_interval);\ndrivers/net/bonding/bond_netlink.c-308-\t\terr = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-325-\ndrivers/net/bonding/bond_netlink.c:326:\t\t\tbond_opt_initval(\u0026newval, (__force u64)target);\ndrivers/net/bonding/bond_netlink.c-327-\t\t\terr = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,\n--\ndrivers/net/bonding/bond_netlink.c-355-\ndrivers/net/bonding/bond_netlink.c:356:\t\t\tbond_opt_initextra(\u0026newval, \u0026addr6, sizeof(addr6));\ndrivers/net/bonding/bond_netlink.c-357-\t\t\terr = __bond_opt_set(bond, BOND_OPT_NS_TARGETS,\n--\ndrivers/net/bonding/bond_netlink.c-379-\ndrivers/net/bonding/bond_netlink.c:380:\t\tbond_opt_initval(\u0026newval, arp_validate);\ndrivers/net/bonding/bond_netlink.c-381-\t\terr = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-389-\ndrivers/net/bonding/bond_netlink.c:390:\t\tbond_opt_initval(\u0026newval, arp_all_targets);\ndrivers/net/bonding/bond_netlink.c-391-\t\terr = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-404-\ndrivers/net/bonding/bond_netlink.c:405:\t\tbond_opt_initstr(\u0026newval, primary);\ndrivers/net/bonding/bond_netlink.c-406-\t\terr = __bond_opt_set(bond, BOND_OPT_PRIMARY, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-414-\ndrivers/net/bonding/bond_netlink.c:415:\t\tbond_opt_initval(\u0026newval, primary_reselect);\ndrivers/net/bonding/bond_netlink.c-416-\t\terr = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-424-\ndrivers/net/bonding/bond_netlink.c:425:\t\tbond_opt_initval(\u0026newval, fail_over_mac);\ndrivers/net/bonding/bond_netlink.c-426-\t\terr = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-434-\ndrivers/net/bonding/bond_netlink.c:435:\t\tbond_opt_initval(\u0026newval, xmit_hash_policy);\ndrivers/net/bonding/bond_netlink.c-436-\t\terr = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-444-\ndrivers/net/bonding/bond_netlink.c:445:\t\tbond_opt_initval(\u0026newval, resend_igmp);\ndrivers/net/bonding/bond_netlink.c-446-\t\terr = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-454-\ndrivers/net/bonding/bond_netlink.c:455:\t\tbond_opt_initval(\u0026newval, num_peer_notif);\ndrivers/net/bonding/bond_netlink.c-456-\t\terr = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-464-\ndrivers/net/bonding/bond_netlink.c:465:\t\tbond_opt_initval(\u0026newval, all_slaves_active);\ndrivers/net/bonding/bond_netlink.c-466-\t\terr = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-474-\ndrivers/net/bonding/bond_netlink.c:475:\t\tbond_opt_initval(\u0026newval, min_links);\ndrivers/net/bonding/bond_netlink.c-476-\t\terr = __bond_opt_set(bond, BOND_OPT_MINLINKS, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-484-\ndrivers/net/bonding/bond_netlink.c:485:\t\tbond_opt_initval(\u0026newval, lp_interval);\ndrivers/net/bonding/bond_netlink.c-486-\t\terr = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-494-\ndrivers/net/bonding/bond_netlink.c:495:\t\tbond_opt_initval(\u0026newval, packets_per_slave);\ndrivers/net/bonding/bond_netlink.c-496-\t\terr = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-504-\ndrivers/net/bonding/bond_netlink.c:505:\t\tbond_opt_initval(\u0026newval, lacp_active);\ndrivers/net/bonding/bond_netlink.c-506-\t\terr = __bond_opt_set(bond, BOND_OPT_LACP_ACTIVE, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-515-\ndrivers/net/bonding/bond_netlink.c:516:\t\tbond_opt_initval(\u0026newval, lacp_rate);\ndrivers/net/bonding/bond_netlink.c-517-\t\terr = __bond_opt_set(bond, BOND_OPT_LACP_RATE, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-525-\ndrivers/net/bonding/bond_netlink.c:526:\t\tbond_opt_initval(\u0026newval, ad_select);\ndrivers/net/bonding/bond_netlink.c-527-\t\terr = __bond_opt_set(bond, BOND_OPT_AD_SELECT, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-535-\ndrivers/net/bonding/bond_netlink.c:536:\t\tbond_opt_initval(\u0026newval, actor_sys_prio);\ndrivers/net/bonding/bond_netlink.c-537-\t\terr = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-545-\ndrivers/net/bonding/bond_netlink.c:546:\t\tbond_opt_initval(\u0026newval, port_key);\ndrivers/net/bonding/bond_netlink.c-547-\t\terr = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-555-\ndrivers/net/bonding/bond_netlink.c:556:\t\tbond_opt_initval(\u0026newval,\ndrivers/net/bonding/bond_netlink.c-557-\t\t\t\t nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM]));\n--\ndrivers/net/bonding/bond_netlink.c-565-\ndrivers/net/bonding/bond_netlink.c:566:\t\tbond_opt_initval(\u0026newval, dynamic_lb);\ndrivers/net/bonding/bond_netlink.c-567-\t\terr = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-575-\ndrivers/net/bonding/bond_netlink.c:576:\t\tbond_opt_initval(\u0026newval, missed_max);\ndrivers/net/bonding/bond_netlink.c-577-\t\terr = __bond_opt_set(bond, BOND_OPT_MISSED_MAX, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-585-\ndrivers/net/bonding/bond_netlink.c:586:\t\tbond_opt_initval(\u0026newval, coupled_control);\ndrivers/net/bonding/bond_netlink.c-587-\t\terr = __bond_opt_set(bond, BOND_OPT_COUPLED_CONTROL, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-595-\ndrivers/net/bonding/bond_netlink.c:596:\t\tbond_opt_initval(\u0026newval, broadcast_neigh);\ndrivers/net/bonding/bond_netlink.c-597-\t\terr = __bond_opt_set(bond, BOND_OPT_BROADCAST_NEIGH, \u0026newval,\n--\ndrivers/net/bonding/bond_netlink.c-605-\ndrivers/net/bonding/bond_netlink.c:606:\t\tbond_opt_initval(\u0026newval, fallback_mode);\ndrivers/net/bonding/bond_netlink.c-607-\t\terr = __bond_opt_set(bond, BOND_OPT_LACP_STRICT, \u0026newval,\n--\ndrivers/net/bonding/bond_options.c=868=int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)\n--\ndrivers/net/bonding/bond_options.c-874-\t\treturn restart_syscall();\ndrivers/net/bonding/bond_options.c:875:\tbond_opt_initstr(\u0026optval, buf);\ndrivers/net/bonding/bond_options.c-876-\tret = __bond_opt_set_notify(bond, option, \u0026optval);\n"
} |
| 17/2 | 2026/08/31 09:44 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 12507 output: 33 thoughts: 122 Thoughts: **Reviewing Bonding Module Functionality** Okay, let's dive in. I need to get a clear picture of the non-static functions within the bonding module's core files. Specifically, I want to start by examining `bond_main.c`, `bond_options.c`, and `bond_netlink.c`. I'll be looking for any functions that could potentially be entry points or critical components. Alright, a quick scan reveals functions like `bond_changelink`, `bond_newlink`, `bond_create`, and also the option-related functions `bond_opt_tryset_rtnl`, `bond_do_ioctl`, as well as `__bond_opt_set_notify` and `__bond_opt_set`. I'll need to understand their roles in the bonding lifecycle. Next, I'll need to go deeper. I'm going to shift my focus to `drivers/net/bonding/bond_main.c` now, seeking out non-static functions directly involved in bonding initialization, Address Resolution Protocol (ARP) monitoring, and the work queue system. These areas are crucial to the overall stability and behavior of the bonding driver. My aim is to build a complete picture of the control flow. |
| 18/2 | 2026/08/31 09:44 | tool | grepper |
0mArgs:{
"Expression": "^void bond_|^int bond_",
"PathPrefix": "drivers/net/bonding"
}Results: {
"Output": "drivers/net/bonding/bond_3ad.c=2214=static void ad_marker_response_received(struct bond_marker *marker,\n--\ndrivers/net/bonding/bond_3ad.c-2236- */\ndrivers/net/bonding/bond_3ad.c:2237:void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout)\ndrivers/net/bonding/bond_3ad.c-2238-{\n--\ndrivers/net/bonding/bond_3ad.c-2247- */\ndrivers/net/bonding/bond_3ad.c:2248:void bond_3ad_initialize(struct bonding *bond)\ndrivers/net/bonding/bond_3ad.c-2249-{\n--\ndrivers/net/bonding/bond_3ad.c-2271- */\ndrivers/net/bonding/bond_3ad.c:2272:void bond_3ad_bind_slave(struct slave *slave)\ndrivers/net/bonding/bond_3ad.c-2273-{\n--\ndrivers/net/bonding/bond_3ad.c-2325- */\ndrivers/net/bonding/bond_3ad.c:2326:void bond_3ad_unbind_slave(struct slave *slave)\ndrivers/net/bonding/bond_3ad.c-2327-{\n--\ndrivers/net/bonding/bond_3ad.c-2488- */\ndrivers/net/bonding/bond_3ad.c:2489:void bond_3ad_update_ad_actor_settings(struct bonding *bond)\ndrivers/net/bonding/bond_3ad.c-2490-{\n--\ndrivers/net/bonding/bond_3ad.c=2520=static bool bond_agg_timer_advance(struct bonding *bond)\n--\ndrivers/net/bonding/bond_3ad.c-2548- */\ndrivers/net/bonding/bond_3ad.c:2549:void bond_3ad_state_machine_handler(struct work_struct *work)\ndrivers/net/bonding/bond_3ad.c-2550-{\n--\ndrivers/net/bonding/bond_3ad.c=2710=static void ad_update_actor_keys(struct port *port, bool reset)\n--\ndrivers/net/bonding/bond_3ad.c-2753- */\ndrivers/net/bonding/bond_3ad.c:2754:void bond_3ad_adapter_speed_duplex_changed(struct slave *slave)\ndrivers/net/bonding/bond_3ad.c-2755-{\n--\ndrivers/net/bonding/bond_3ad.c-2780- */\ndrivers/net/bonding/bond_3ad.c:2781:void bond_3ad_handle_link_change(struct slave *slave, char link)\ndrivers/net/bonding/bond_3ad.c-2782-{\n--\ndrivers/net/bonding/bond_3ad.c-2838- */\ndrivers/net/bonding/bond_3ad.c:2839:int bond_3ad_set_carrier(struct bonding *bond)\ndrivers/net/bonding/bond_3ad.c-2840-{\n--\ndrivers/net/bonding/bond_3ad.c=2881=int __bond_3ad_get_active_agg_info(const struct bonding *bond,\n--\ndrivers/net/bonding/bond_3ad.c-2913-\ndrivers/net/bonding/bond_3ad.c:2914:int bond_3ad_get_active_agg_info(const struct bonding *bond, struct ad_info *ad_info)\ndrivers/net/bonding/bond_3ad.c-2915-{\n--\ndrivers/net/bonding/bond_3ad.c-2924-\ndrivers/net/bonding/bond_3ad.c:2925:int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond,\ndrivers/net/bonding/bond_3ad.c-2926-\t\t\t struct slave *slave)\n--\ndrivers/net/bonding/bond_3ad.c-2956- */\ndrivers/net/bonding/bond_3ad.c:2957:void bond_3ad_update_lacp_rate(struct bonding *bond)\ndrivers/net/bonding/bond_3ad.c-2958-{\n--\ndrivers/net/bonding/bond_3ad.c-2981- */\ndrivers/net/bonding/bond_3ad.c:2982:void bond_3ad_update_lacp_active(struct bonding *bond)\ndrivers/net/bonding/bond_3ad.c-2983-{\n--\ndrivers/net/bonding/bond_3ad.c=3001=size_t bond_3ad_stats_size(void)\n--\ndrivers/net/bonding/bond_3ad.c-3013-\ndrivers/net/bonding/bond_3ad.c:3014:int bond_3ad_stats_fill(struct sk_buff *skb, struct bond_3ad_stats *stats)\ndrivers/net/bonding/bond_3ad.c-3015-{\n--\ndrivers/net/bonding/bond_alb.c=1284=static bool alb_determine_nd(struct sk_buff *skb, struct bonding *bond)\n--\ndrivers/net/bonding/bond_alb.c-1305-\ndrivers/net/bonding/bond_alb.c:1306:int bond_alb_initialize(struct bonding *bond, int rlb_enabled)\ndrivers/net/bonding/bond_alb.c-1307-{\n--\ndrivers/net/bonding/bond_alb.c-1327-\ndrivers/net/bonding/bond_alb.c:1328:void bond_alb_deinitialize(struct bonding *bond)\ndrivers/net/bonding/bond_alb.c-1329-{\n--\ndrivers/net/bonding/bond_alb.c=1523=netdev_tx_t bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)\n--\ndrivers/net/bonding/bond_alb.c-1531-\ndrivers/net/bonding/bond_alb.c:1532:void bond_alb_monitor(struct work_struct *work)\ndrivers/net/bonding/bond_alb.c-1533-{\n--\ndrivers/net/bonding/bond_alb.c-1635- */\ndrivers/net/bonding/bond_alb.c:1636:int bond_alb_init_slave(struct bonding *bond, struct slave *slave)\ndrivers/net/bonding/bond_alb.c-1637-{\n--\ndrivers/net/bonding/bond_alb.c-1665- */\ndrivers/net/bonding/bond_alb.c:1666:void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave)\ndrivers/net/bonding/bond_alb.c-1667-{\n--\ndrivers/net/bonding/bond_alb.c-1679-\ndrivers/net/bonding/bond_alb.c:1680:void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link)\ndrivers/net/bonding/bond_alb.c-1681-{\n--\ndrivers/net/bonding/bond_alb.c-1717- */\ndrivers/net/bonding/bond_alb.c:1718:void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave)\ndrivers/net/bonding/bond_alb.c-1719-{\n--\ndrivers/net/bonding/bond_alb.c-1786-/* Called with RTNL */\ndrivers/net/bonding/bond_alb.c:1787:int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr)\ndrivers/net/bonding/bond_alb.c-1788-{\n--\ndrivers/net/bonding/bond_alb.c-1831-\ndrivers/net/bonding/bond_alb.c:1832:void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id)\ndrivers/net/bonding/bond_alb.c-1833-{\n--\ndrivers/net/bonding/bond_debugfs.c=54=DEFINE_SHOW_ATTRIBUTE(bond_debug_rlb_hash);\ndrivers/net/bonding/bond_debugfs.c-55-\ndrivers/net/bonding/bond_debugfs.c:56:void bond_debug_register(struct bonding *bond)\ndrivers/net/bonding/bond_debugfs.c-57-{\n--\ndrivers/net/bonding/bond_debugfs.c-64-\ndrivers/net/bonding/bond_debugfs.c:65:void bond_debug_unregister(struct bonding *bond)\ndrivers/net/bonding/bond_debugfs.c-66-{\n--\ndrivers/net/bonding/bond_debugfs.c-69-\ndrivers/net/bonding/bond_debugfs.c:70:void bond_debug_reregister(struct bonding *bond)\ndrivers/net/bonding/bond_debugfs.c-71-{\n--\ndrivers/net/bonding/bond_debugfs.c=79=void __init bond_create_debugfs(void)\n--\ndrivers/net/bonding/bond_debugfs.c-86-\ndrivers/net/bonding/bond_debugfs.c:87:void bond_destroy_debugfs(void)\ndrivers/net/bonding/bond_debugfs.c-88-{\n--\ndrivers/net/bonding/bond_debugfs.c-95-\ndrivers/net/bonding/bond_debugfs.c:96:void bond_debug_register(struct bonding *bond)\ndrivers/net/bonding/bond_debugfs.c-97-{\n--\ndrivers/net/bonding/bond_debugfs.c-99-\ndrivers/net/bonding/bond_debugfs.c:100:void bond_debug_unregister(struct bonding *bond)\ndrivers/net/bonding/bond_debugfs.c-101-{\n--\ndrivers/net/bonding/bond_debugfs.c-103-\ndrivers/net/bonding/bond_debugfs.c:104:void bond_debug_reregister(struct bonding *bond)\ndrivers/net/bonding/bond_debugfs.c-105-{\n--\ndrivers/net/bonding/bond_debugfs.c=108=void __init bond_create_debugfs(void)\n--\ndrivers/net/bonding/bond_debugfs.c-111-\ndrivers/net/bonding/bond_debugfs.c:112:void bond_destroy_debugfs(void)\ndrivers/net/bonding/bond_debugfs.c-113-{\n--\ndrivers/net/bonding/bond_main.c=738=static const struct xfrmdev_ops bond_xfrmdev_ops = {\n--\ndrivers/net/bonding/bond_main.c-755- */\ndrivers/net/bonding/bond_main.c:756:int bond_set_carrier(struct bonding *bond)\ndrivers/net/bonding/bond_main.c-757-{\n--\ndrivers/net/bonding/bond_main.c=1176=static bool bond_should_notify_peers(struct bonding *bond)\n--\ndrivers/net/bonding/bond_main.c-1208-/* Use this to update send_peer_notif when RTNL may be held in other places. */\ndrivers/net/bonding/bond_main.c:1209:void bond_peer_notify_work_rearm(struct bonding *bond, unsigned long delay)\ndrivers/net/bonding/bond_main.c-1210-{\n--\ndrivers/net/bonding/bond_main.c=1238=static void bond_peer_notify_may_events(struct bonding *bond, bool force)\n--\ndrivers/net/bonding/bond_main.c-1265- */\ndrivers/net/bonding/bond_main.c:1266:void bond_change_active_slave(struct bonding *bond, struct slave *new_active)\ndrivers/net/bonding/bond_main.c-1267-{\n--\ndrivers/net/bonding/bond_main.c-1369- */\ndrivers/net/bonding/bond_main.c:1370:void bond_select_active_slave(struct bonding *bond)\ndrivers/net/bonding/bond_main.c-1371-{\n--\ndrivers/net/bonding/bond_main.c=1805=static void bond_netdev_notify_work(struct work_struct *_work)\n--\ndrivers/net/bonding/bond_main.c-1821-\ndrivers/net/bonding/bond_main.c:1822:void bond_queue_slave_event(struct slave *slave)\ndrivers/net/bonding/bond_main.c-1823-{\n--\ndrivers/net/bonding/bond_main.c-1826-\ndrivers/net/bonding/bond_main.c:1827:void bond_lower_state_changed(struct slave *slave)\ndrivers/net/bonding/bond_main.c-1828-{\n--\ndrivers/net/bonding/bond_main.c=1856=static void bond_ether_setup(struct net_device *bond_dev)\n--\ndrivers/net/bonding/bond_main.c-1864-\ndrivers/net/bonding/bond_main.c:1865:void bond_xdp_set_features(struct net_device *bond_dev)\ndrivers/net/bonding/bond_main.c-1866-{\n--\ndrivers/net/bonding/bond_main.c-1887-/* enslave device \u003cslave\u003e to bond device \u003cmaster\u003e */\ndrivers/net/bonding/bond_main.c:1888:int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev,\ndrivers/net/bonding/bond_main.c-1889-\t\t struct netlink_ext_ack *extack)\n--\ndrivers/net/bonding/bond_main.c=2425=static int __bond_release_one(struct net_device *bond_dev,\n--\ndrivers/net/bonding/bond_main.c-2605-/* A wrapper used because of ndo_del_link */\ndrivers/net/bonding/bond_main.c:2606:int bond_release(struct net_device *bond_dev, struct net_device *slave_dev)\ndrivers/net/bonding/bond_main.c-2607-{\n--\ndrivers/net/bonding/bond_main.c=3374=static int bond_na_rcv(const struct sk_buff *skb, struct bonding *bond,\n--\ndrivers/net/bonding/bond_main.c-3422-\ndrivers/net/bonding/bond_main.c:3423:int bond_rcv_validate(const struct sk_buff *skb, struct bonding *bond,\ndrivers/net/bonding/bond_main.c-3424-\t\t struct slave *slave)\n--\ndrivers/net/bonding/bond_main.c=4303=static u32 bond_xmit_hash_xdp(struct bonding *bond, struct xdp_buff *xdp)\n--\ndrivers/net/bonding/bond_main.c-4317-\ndrivers/net/bonding/bond_main.c:4318:void bond_work_init_all(struct bonding *bond)\ndrivers/net/bonding/bond_main.c-4319-{\n--\ndrivers/net/bonding/bond_main.c-4333-\ndrivers/net/bonding/bond_main.c:4334:void bond_work_cancel_all(struct bonding *bond)\ndrivers/net/bonding/bond_main.c-4335-{\n--\ndrivers/net/bonding/bond_main.c=5058=static netdev_tx_t bond_xmit_activebackup(struct sk_buff *skb,\n--\ndrivers/net/bonding/bond_main.c-5074- */\ndrivers/net/bonding/bond_main.c:5075:void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay)\ndrivers/net/bonding/bond_main.c-5076-{\n--\ndrivers/net/bonding/bond_main.c=5145=static void bond_reset_slave_arr(struct bonding *bond)\n--\ndrivers/net/bonding/bond_main.c-5157- */\ndrivers/net/bonding/bond_main.c:5158:int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave)\ndrivers/net/bonding/bond_main.c-5159-{\n--\ndrivers/net/bonding/bond_main.c=5982=static void bond_destructor(struct net_device *bond_dev)\n--\ndrivers/net/bonding/bond_main.c-5991-\ndrivers/net/bonding/bond_main.c:5992:void bond_setup(struct net_device *bond_dev)\ndrivers/net/bonding/bond_main.c-5993-{\n--\ndrivers/net/bonding/bond_main.c=6508=unsigned int bond_get_num_tx_queues(void)\n--\ndrivers/net/bonding/bond_main.c-6517- */\ndrivers/net/bonding/bond_main.c:6518:int bond_create(struct net *net, const char *name)\ndrivers/net/bonding/bond_main.c-6519-{\n--\ndrivers/net/bonding/bond_netlink.c=1008=int __init bond_netlink_init(void)\n--\ndrivers/net/bonding/bond_netlink.c-1012-\ndrivers/net/bonding/bond_netlink.c:1013:void bond_netlink_fini(void)\ndrivers/net/bonding/bond_netlink.c-1014-{\n--\ndrivers/net/bonding/bond_options.c=844=int __bond_opt_set_notify(struct bonding *bond,\n--\ndrivers/net/bonding/bond_options.c-867- */\ndrivers/net/bonding/bond_options.c:868:int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)\ndrivers/net/bonding/bond_options.c-869-{\n--\ndrivers/net/bonding/bond_options.c=1213=static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)\n--\ndrivers/net/bonding/bond_options.c-1251-\ndrivers/net/bonding/bond_options.c:1252:void bond_option_arp_ip_targets_clear(struct bonding *bond)\ndrivers/net/bonding/bond_options.c-1253-{\n--\ndrivers/net/bonding/bond_options.c=1311=static void slave_set_ns_maddrs(struct bonding *bond, struct slave *slave, bool add)\n--\ndrivers/net/bonding/bond_options.c-1334-\ndrivers/net/bonding/bond_options.c:1335:void bond_slave_ns_maddrs_add(struct bonding *bond, struct slave *slave)\ndrivers/net/bonding/bond_options.c-1336-{\n--\ndrivers/net/bonding/bond_options.c-1341-\ndrivers/net/bonding/bond_options.c:1342:void bond_slave_ns_maddrs_del(struct bonding *bond, struct slave *slave)\ndrivers/net/bonding/bond_options.c-1343-{\n--\ndrivers/net/bonding/bond_options.c=1388=static void _bond_options_ns_ip6_target_set(struct bonding *bond, int slot,\n--\ndrivers/net/bonding/bond_options.c-1404-\ndrivers/net/bonding/bond_options.c:1405:void bond_option_ns_ip6_targets_clear(struct bonding *bond)\ndrivers/net/bonding/bond_options.c-1406-{\n--\ndrivers/net/bonding/bond_options.c=1453=static void slave_set_ns_maddrs(struct bonding *bond, struct slave *slave, bool add) {}\ndrivers/net/bonding/bond_options.c-1454-\ndrivers/net/bonding/bond_options.c:1455:void bond_slave_ns_maddrs_add(struct bonding *bond, struct slave *slave) {}\ndrivers/net/bonding/bond_options.c-1456-\ndrivers/net/bonding/bond_options.c:1457:void bond_slave_ns_maddrs_del(struct bonding *bond, struct slave *slave) {}\ndrivers/net/bonding/bond_options.c-1458-#endif\n--\ndrivers/net/bonding/bond_procfs.c=284=static const struct seq_operations bond_info_seq_ops = {\n--\ndrivers/net/bonding/bond_procfs.c-290-\ndrivers/net/bonding/bond_procfs.c:291:void bond_create_proc_entry(struct bonding *bond)\ndrivers/net/bonding/bond_procfs.c-292-{\n--\ndrivers/net/bonding/bond_procfs.c-306-\ndrivers/net/bonding/bond_procfs.c:307:void bond_remove_proc_entry(struct bonding *bond)\ndrivers/net/bonding/bond_procfs.c-308-{\n--\ndrivers/net/bonding/bond_sysfs.c=852=void __net_exit bond_destroy_sysfs(struct bond_net *bn)\n--\ndrivers/net/bonding/bond_sysfs.c-859- */\ndrivers/net/bonding/bond_sysfs.c:860:void bond_prepare_sysfs_group(struct bonding *bond)\ndrivers/net/bonding/bond_sysfs.c-861-{\n--\ndrivers/net/bonding/bond_sysfs_slave.c=133=const struct sysfs_ops slave_sysfs_ops = {\n--\ndrivers/net/bonding/bond_sysfs_slave.c-136-\ndrivers/net/bonding/bond_sysfs_slave.c:137:int bond_sysfs_slave_add(struct slave *slave)\ndrivers/net/bonding/bond_sysfs_slave.c-138-{\n--\ndrivers/net/bonding/bond_sysfs_slave.c-141-\ndrivers/net/bonding/bond_sysfs_slave.c:142:void bond_sysfs_slave_del(struct slave *slave)\ndrivers/net/bonding/bond_sysfs_slave.c-143-{\n"
} |
| 19/2 | 2026/08/31 09:44 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 18679 output: 31 thoughts: 29 Thoughts: Okay, here's my take on those thoughts, framed as an expert's internal monologue: **Investigating Bond Netlink Operations** Right, so we're looking at network interfaces and the bond driver specifically. My immediate thought is to delve into how the `bond` driver handles Netlink operations, especially since we're probably debugging or extending its functionality. I need to understand what's actually happening at the Netlink level. To do that, I'll need to examine `rtnl_link_ops` within `bond_netlink.c`. That's where the critical entrypoints for link configuration via Netlink are defined. Checking there will quickly show me which Netlink messages the bond driver registers for and processes, revealing the methods for adding, deleting, and configuring bonded interfaces. This will give me a solid grasp of how bond interacts with the kernel's Netlink infrastructure. Let's see what we can find. |
| 20/2 | 2026/08/31 09:44 | tool | grepper |
0mArgs:{
"Expression": "rtnl_link_ops",
"PathPrefix": "drivers/net/bonding"
}Results: {
"Output": "drivers/net/bonding/bond_main.c=6518=int bond_create(struct net *net, const char *name)\n--\ndrivers/net/bonding/bond_main.c-6533-\tdev_net_set(bond_dev, net);\ndrivers/net/bonding/bond_main.c:6534:\tbond_dev-\u003ertnl_link_ops = \u0026bond_link_ops;\ndrivers/net/bonding/bond_main.c-6535-\n--\ndrivers/net/bonding/bond_netlink.c=933=static int bond_fill_linkxstats(struct sk_buff *skb,\n--\ndrivers/net/bonding/bond_netlink.c-984-\ndrivers/net/bonding/bond_netlink.c:985:struct rtnl_link_ops bond_link_ops __read_mostly = {\ndrivers/net/bonding/bond_netlink.c-986-\t.kind\t\t\t= \"bond\",\n"
} |
| 21/2 | 2026/08/31 09:44 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 19188 output: 200 thoughts: 170 Thoughts: **My Thought Process on Bonding Symbol Configuration** Okay, let's nail down this `FocusSymbols` list for the bonding module. I need to be precise, so I'm making sure I've got all the relevant symbols: `bond_enslave`, `bond_release`, `bond_opt_tryset_rtnl`, `__bond_opt_set_notify`, `bond_create`, `bond_change_active_slave`, `bond_select_active_slave`, and `bond_peer_notify_work_rearm`. This is a good starting point and I believe the list is exhaustive. Now, let's tackle those Kconfig dependencies. I remember that `BONDING` is contingent upon `INET` and then, crucially, either `TLS` or, if `TLS` is explicitly disabled (i.e., `TLS_DEVICE=n`). Those are the gatekeepers. Okay, this tells me the `EnableConfigs` should be `BONDING`, `INET`, and, of course, `NET_CORE` since that's where the conditional is. Always need to be thorough with the dependencies. Alright, before I finalize this, I'm going to run a final check over everything to confirm there are no holes in my thinking. Once I'm satisfied, I'll invoke `set-results`. Ready to go. |
| 22/2 | 2026/08/31 09:44 | tool | set-results |
0mArgs:{
"EnableConfigs": [
"BONDING",
"INET",
"NET_CORE"
],
"FocusSymbols": [
"bond_enslave",
"bond_release",
"bond_opt_tryset_rtnl",
"bond_create",
"bond_change_active_slave",
"bond_peer_notify_work_rearm"
],
"Reasoning": "The patch modifies the delayed work re-arming behavior in `bond_activebackup_arp_mon` within the bonding driver (`CONFIG_BONDING`). When failing to acquire RTNL lock during slave notification / peer notification in active-backup ARP monitoring, it no longer forcibly resets `delta_in_ticks` to 1. This affects the core execution flow and timing of the bonding driver's periodic ARP monitor, which is a software network interface readily exercisable in virtualized environments.",
"WorthFuzzing": true
}Results: {
"EnableConfigs": [
"BONDING",
"INET",
"NET_CORE"
],
"FocusSymbols": [
"bond_enslave",
"bond_release",
"bond_opt_tryset_rtnl",
"bond_create",
"bond_change_active_slave",
"bond_peer_notify_work_rearm"
],
"Reasoning": "The patch modifies the delayed work re-arming behavior in `bond_activebackup_arp_mon` within the bonding driver (`CONFIG_BONDING`). When failing to acquire RTNL lock during slave notification / peer notification in active-backup ARP monitoring, it no longer forcibly resets `delta_in_ticks` to 1. This affects the core execution flow and timing of the bonding driver's periodic ARP monitor, which is a software network interface readily exercisable in virtualized environments.",
"WorthFuzzing": true
} |
| 23/1 | 2026/08/31 09:44 | action | If |
0mArgs:{
"WorthFuzzing": true
}Results: null |
| 24/2 | 2026/08/31 09:44 | agent | kmsan-evaluator |
0mModel:core Args: null Results: {
"KMSANReasoning": "The patch removes the assignment `delta_in_ticks = 1;` prior to branching to `re_arm` when `rtnl_trylock()` fails in `bond_activebackup_arp_mon()`. \n\nAnalysis for memory sanitizers:\n1. KMSAN applicability: The variable `delta_in_ticks` is already initialized at the start of the function (`delta_in_ticks = msecs_to_jiffies(bond-\u003eparams.arp_interval)`). The patch does not introduce, read, or expose any uninitialized stack, heap, or page memory, nor does it pass uninitialized data or padding to userspace (no `copy_to_user`, netlink attributes, ioctl data, etc.).\n2. KASAN / Lockdep applicability: The change purely adjusts the delayed work rescheduling interval upon failing to acquire the RTNL trylock in the bonding ARP monitor. Standard testing with KASAN and LOCKDEP is sufficient to monitor any concurrency, locking, or object lifetime issues.\n\nTherefore, dedicated KMSAN fuzzing is not required.",
"NeedsKMSAN": false
}Instruction: You are an expert Linux kernel security engineer specializing in kernel memory
error detectors (KASAN and KMSAN). Your job is to review the provided patch series and
determine if the code changes justify spawning a dedicated KMSAN (KernelMemorySanitizer)
fuzzing session in addition to standard KASAN fuzzing.
CRITICAL DISTINCTION BETWEEN KASAN AND KMSAN:
- Standard KASAN kernel builds (upstream-apparmor-kasan.config) already enable
a comprehensive suite of debugging tools and sanitizers, including KASAN
(out-of-bounds accesses, use-after-free, double free, invalid free), LOCKDEP
(locking bugs and deadlocks), UB-sanitizers, and memory corruption checks.
- KMSAN (KernelMemorySanitizer) detects reads of UNINITIALIZED memory (stack, heap,
or page allocations) and kernel-to-user memory info-leaks.
Rule: THERE IS NO SENSE IN RUNNING A KMSAN SESSION IF A BUG CAN BE CAUGHT BY KASAN,
LOCKDEP, OR OTHER STANDARD BUG DETECTORS.
A dedicated KMSAN fuzzing session incurs significant resource costs. You must ONLY
set NeedsKMSAN=true if the code changes introduce or expose UNINITIALIZED MEMORY risks
that are detected ONLY by KMSAN.
Look holistically at the patch series and surrounding code. Even if no direct
uninitialized field accesses or new buffer allocations are added in the diff itself,
a patch may alter control flow, bounds checking, or data length calculations in ways
that change how the rest of the code operates on existing buffers (e.g. allowing
uninitialized stack/heap memory to be read, copied to user space, or used in control
flow). Do not hesitate to use your code access tools to inspect the surrounding code,
called functions, and callers.
Set NeedsKMSAN=true ONLY IF the patch introduces or modifies:
1. Kernel structures sent to user space (via copy_to_user, put_user, netlink skb
attributes, ioctl output arguments, socket options, or BPF buffers) where fields
or structure padding might not be fully initialized/zeroed.
2. Conditional logic or branching that depends on potentially uninitialized variables
or struct fields.
3. Allocation or initialization of complex data structures where uninitialized fields
could be read later in reachable code paths.
4. Bounds checks, lengths, or logic in a way that allows surrounding code to access
uninitialized bytes of existing buffers.
Set NeedsKMSAN=false IF:
- The code changes primarily risk out-of-bounds access, array overflows, NULL pointer
dereferences, locking deadlocks, or use-after-free bugs (these are already caught
by KASAN, LOCKDEP, or standard bug detectors).
- All stack/heap structures touched or introduced by the patch are fully zeroed
or initialized (e.g. using = {0}, memset, kzalloc) before being read or copied.
- The patch does not introduce any risk of uninitialized memory usage or info-leaks.
Use your code access tools to inspect the surrounding code if necessary, then provide
detailed KMSANReasoning contrasting KASAN vs KMSAN applicability for this patch.
Prefer calling several tools at the same time to save round-trips.
Use set-results tool to provide results of the analysis.
It must be called exactly once before the final reply.
Ignore results of this tool.
Prompt: For your convenience, here is the diff of the changes:
commit 4b920d812e56342ff57f1da1ec3a8842c16454ab
Author: syz-cluster <triage@syzkaller.com>
Date: Mon Aug 31 09:42:44 2026 +0000
syz-cluster: applied patch under review
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index ef9eb0c53c661..c23cf18a996ab 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3871,10 +3871,8 @@ static void bond_activebackup_arp_mon(struct bonding *bond)
rcu_read_unlock();
if (READ_ONCE(bond->send_peer_notif) || should_notify_rtnl) {
- if (!rtnl_trylock()) {
- delta_in_ticks = 1;
+ if (!rtnl_trylock())
goto re_arm;
- }
if (bond->send_peer_notif)
bond_peer_notify_may_events(bond, true);
|
| 25/3 | 2026/08/31 09:44 | llm | kmsan-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 2113 output: 40 thoughts: 56 Thoughts: **Examining the Bonding Driver Code** Alright, let's dive in. Based on the task at hand, I need to get a clear picture of what's changed within the bonding driver, specifically in `drivers/net/bonding/bond_main.c`. My initial step is going to be a careful inspection of the diff, of course. That's my go-to approach. I need to understand the surrounding code to grasp the intent and the impact of the modifications. Given the line number reference, I'll use the `read-file` tool to examine the code around line 3871. I want to see the adjacent lines of code; that surrounding context is crucial. Getting the big picture of how the change interacts with the existing structure is vital. Only by understanding the context can I truly assess this. |
| 26/3 | 2026/08/31 09:44 | tool | read-file |
0mArgs:{
"File": "drivers/net/bonding/bond_main.c",
"FirstLine": 3840,
"LineCount": 60
}Results: {
"Contents": "3840:\t\treturn should_notify_rtnl;\n3841:\t}\n3842:\t\n3843:\tstatic void bond_activebackup_arp_mon(struct bonding *bond)\n3844:\t{\n3845:\t\tbool should_notify_rtnl;\n3846:\t\tint delta_in_ticks;\n3847:\t\n3848:\t\tdelta_in_ticks = msecs_to_jiffies(bond-\u003eparams.arp_interval);\n3849:\t\n3850:\t\tif (!bond_has_slaves(bond))\n3851:\t\t\tgoto re_arm;\n3852:\t\n3853:\t\trcu_read_lock();\n3854:\t\n3855:\t\tif (bond_ab_arp_inspect(bond)) {\n3856:\t\t\trcu_read_unlock();\n3857:\t\n3858:\t\t\t/* Race avoidance with bond_close flush of workqueue */\n3859:\t\t\tif (!rtnl_trylock()) {\n3860:\t\t\t\tdelta_in_ticks = 1;\n3861:\t\t\t\tgoto re_arm;\n3862:\t\t\t}\n3863:\t\n3864:\t\t\tbond_ab_arp_commit(bond);\n3865:\t\n3866:\t\t\trtnl_unlock();\n3867:\t\t\trcu_read_lock();\n3868:\t\t}\n3869:\t\n3870:\t\tshould_notify_rtnl = bond_ab_arp_probe(bond);\n3871:\t\trcu_read_unlock();\n3872:\t\n3873:\t\tif (READ_ONCE(bond-\u003esend_peer_notif) || should_notify_rtnl) {\n3874:\t\t\tif (!rtnl_trylock())\n3875:\t\t\t\tgoto re_arm;\n3876:\t\n3877:\t\t\tif (bond-\u003esend_peer_notif)\n3878:\t\t\t\tbond_peer_notify_may_events(bond, true);\n3879:\t\n3880:\t\t\tif (should_notify_rtnl) {\n3881:\t\t\t\tbond_slave_state_notify(bond);\n3882:\t\t\t\tbond_slave_link_notify(bond);\n3883:\t\t\t}\n3884:\t\n3885:\t\t\trtnl_unlock();\n3886:\t\t}\n3887:\t\n3888:\tre_arm:\n3889:\t\tif (bond-\u003eparams.arp_interval)\n3890:\t\t\tqueue_delayed_work(bond-\u003ewq, \u0026bond-\u003earp_work, delta_in_ticks);\n3891:\t}\n3892:\t\n3893:\tstatic void bond_arp_monitor(struct work_struct *work)\n3894:\t{\n3895:\t\tstruct bonding *bond = container_of(work, struct bonding,\n3896:\t\t\t\t\t\t arp_work.work);\n3897:\t\n3898:\t\tif (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP)\n3899:\t\t\tbond_activebackup_arp_mon(bond);\n"
} |
| 27/3 | 2026/08/31 09:44 | llm | kmsan-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 3210 output: 253 thoughts: 462 Thoughts: **Analyzing the Bonding ARP Monitoring Patch** Okay, let's break this down. First, I see the change in `bond_activebackup_arp_mon`. The patch removes the setting of `delta_in_ticks = 1` before jumping to `re_arm` if `rtnl_trylock()` fails in the second trylock. I need to understand if this introduces any risks. My initial thought is to check for uninitialized memory, which is a classic gotcha. Immediately, I see that `delta_in_ticks` is initialized at line 3848, using `msecs_to_jiffies(bond->params.arp_interval)`. So, that's good. It's explicitly initialized *before* the potential jump. No heap or stack buffers are being messed with, nothing is being copied to user space, and there are no uninitialized structures or fields being read. This is purely related to timing and rescheduling within the bonding ARP monitoring logic. Now, let's cast a wider net. Are there *any* other uninitialized memory risks anywhere in this patch? After a quick scan, it doesn't look like there are. No `copy_to_user`, `put_user`, socket buffers, netlink attributes, ioctls, or BPF buffers are touched. There are no other uninitialized variables or structs that jump out. Again, `delta_in_ticks` is explicitly initialized, and that's the key variable of concern. Therefore, given the nature of the change and the lack of any obvious uninitialized memory or data exposure, KMSAN is not required here. Standard KASAN or concurrency testing is sufficient, or even unnecessary since this is a pure logic fix. No need to go deeper looking for memory corruption as it's not possible in this scenario. I'm confident we can set `NeedsKMSAN` to `false` and follow with a concise explanation that contrasts KASAN and KMSAN. |
| 28/3 | 2026/08/31 09:45 | tool | set-results |
0mArgs:{
"KMSANReasoning": "The patch removes the assignment `delta_in_ticks = 1;` prior to branching to `re_arm` when `rtnl_trylock()` fails in `bond_activebackup_arp_mon()`. \n\nAnalysis for memory sanitizers:\n1. KMSAN applicability: The variable `delta_in_ticks` is already initialized at the start of the function (`delta_in_ticks = msecs_to_jiffies(bond-\u003eparams.arp_interval)`). The patch does not introduce, read, or expose any uninitialized stack, heap, or page memory, nor does it pass uninitialized data or padding to userspace (no `copy_to_user`, netlink attributes, ioctl data, etc.).\n2. KASAN / Lockdep applicability: The change purely adjusts the delayed work rescheduling interval upon failing to acquire the RTNL trylock in the bonding ARP monitor. Standard testing with KASAN and LOCKDEP is sufficient to monitor any concurrency, locking, or object lifetime issues.\n\nTherefore, dedicated KMSAN fuzzing is not required.",
"NeedsKMSAN": false
}Results: {
"KMSANReasoning": "The patch removes the assignment `delta_in_ticks = 1;` prior to branching to `re_arm` when `rtnl_trylock()` fails in `bond_activebackup_arp_mon()`. \n\nAnalysis for memory sanitizers:\n1. KMSAN applicability: The variable `delta_in_ticks` is already initialized at the start of the function (`delta_in_ticks = msecs_to_jiffies(bond-\u003eparams.arp_interval)`). The patch does not introduce, read, or expose any uninitialized stack, heap, or page memory, nor does it pass uninitialized data or padding to userspace (no `copy_to_user`, netlink attributes, ioctl data, etc.).\n2. KASAN / Lockdep applicability: The change purely adjusts the delayed work rescheduling interval upon failing to acquire the RTNL trylock in the bonding ARP monitor. Standard testing with KASAN and LOCKDEP is sufficient to monitor any concurrency, locking, or object lifetime issues.\n\nTherefore, dedicated KMSAN fuzzing is not required.",
"NeedsKMSAN": false
} |
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