| Seq | Timestamp | Type | Name | Duration |
|---|---|---|---|---|
| 0/0 | 2026/08/31 20:39 | flow | patch-triage |
6mArgs:null Results: {
"EnableConfigs": [
"WLAN",
"WLAN_VENDOR_RSI",
"RSI_91X",
"RSI_USB",
"MAC80211",
"USB"
],
"FocusSymbols": [
"rsi_hal_load_key",
"rsi_mac80211_set_key"
],
"KMSANReasoning": "The patch fixes an out-of-bounds read bug in rsi_hal_load_key() where 8-byte TX and RX MIC keys were unconditionally read from \u0026data[16] and \u0026data[24], even when the cipher suite was not TKIP (such as CCMP/AES where the key buffer is only 16 bytes long).\n\n1. KASAN applicability: Out-of-bounds reads on heap or stack buffers (such as accessing past the 16-byte key buffer) are directly detectable by KASAN.\n2. KMSAN applicability: The frame buffer in the skb is fully zero-initialized upfront via `memset(skb-\u003edata, 0, frame_len)`. No uninitialized memory is read, copied to user space, or used in control flow.\n\nSince the issue is strictly an out-of-bounds memory access caught by KASAN and there are no uninitialized memory risks or info-leaks, a dedicated KMSAN fuzzing session is not needed.",
"NeedsKMSAN": false,
"Reasoning": "The patch fixes an out-of-bounds memory read bug in rsi_hal_load_key by restricting copying of the TX and RX MIC keys from the data buffer to only when the cipher suite is WLAN_CIPHER_SUITE_TKIP (preventing OOB reads for key lengths shorter than 32 bytes like AES/CCMP). This driver logic is reachable via mac80211 set_key callbacks with emulated USB devices.",
"WorthFuzzing": true
} |
| 1/1 | 2026/08/31 20:39 | action | read-patch-diff |
0mArgs:null Results: {
"PatchDiff": "commit d39d22f5ed6eb15a0453239f4ba0246af1c859aa\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Mon Aug 31 20:39:39 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/drivers/net/wireless/rsi/rsi_91x_mgmt.c b/drivers/net/wireless/rsi/rsi_91x_mgmt.c\nindex 7f2c1608f2ce3..2ddf4d158bfe3 100644\n--- a/drivers/net/wireless/rsi/rsi_91x_mgmt.c\n+++ b/drivers/net/wireless/rsi/rsi_91x_mgmt.c\n@@ -848,8 +848,10 @@ int rsi_hal_load_key(struct rsi_common *common,\n \t\t} else {\n \t\t\tmemcpy(\u0026set_key-\u003ekey[0][0], data, key_len);\n \t\t}\n-\t\tmemcpy(set_key-\u003etx_mic_key, \u0026data[16], 8);\n-\t\tmemcpy(set_key-\u003erx_mic_key, \u0026data[24], 8);\n+\t\tif (cipher == WLAN_CIPHER_SUITE_TKIP) {\n+\t\t\tmemcpy(set_key-\u003etx_mic_key, \u0026data[16], 8);\n+\t\t\tmemcpy(set_key-\u003erx_mic_key, \u0026data[24], 8);\n+\t\t}\n \t} else {\n \t\tmemset(\u0026set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ);\n \t}\n"
} |
| 2/1 | 2026/08/31 20:39 | agent | patch-evaluator |
6mModel:core Args: null Results: {
"EnableConfigs": [
"WLAN",
"WLAN_VENDOR_RSI",
"RSI_91X",
"RSI_USB",
"MAC80211",
"USB"
],
"FocusSymbols": [
"rsi_hal_load_key",
"rsi_mac80211_set_key"
],
"Reasoning": "The patch fixes an out-of-bounds memory read bug in rsi_hal_load_key by restricting copying of the TX and RX MIC keys from the data buffer to only when the cipher suite is WLAN_CIPHER_SUITE_TKIP (preventing OOB reads for key lengths shorter than 32 bytes like AES/CCMP). This driver logic is reachable via mac80211 set_key callbacks with emulated USB devices.",
"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 d39d22f5ed6eb15a0453239f4ba0246af1c859aa
Author: syz-cluster <triage@syzkaller.com>
Date: Mon Aug 31 20:39:39 2026 +0000
syz-cluster: applied patch under review
diff --git a/drivers/net/wireless/rsi/rsi_91x_mgmt.c b/drivers/net/wireless/rsi/rsi_91x_mgmt.c
index 7f2c1608f2ce3..2ddf4d158bfe3 100644
--- a/drivers/net/wireless/rsi/rsi_91x_mgmt.c
+++ b/drivers/net/wireless/rsi/rsi_91x_mgmt.c
@@ -848,8 +848,10 @@ int rsi_hal_load_key(struct rsi_common *common,
} else {
memcpy(&set_key->key[0][0], data, key_len);
}
- memcpy(set_key->tx_mic_key, &data[16], 8);
- memcpy(set_key->rx_mic_key, &data[24], 8);
+ if (cipher == WLAN_CIPHER_SUITE_TKIP) {
+ memcpy(set_key->tx_mic_key, &data[16], 8);
+ memcpy(set_key->rx_mic_key, &data[24], 8);
+ }
} else {
memset(&set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ);
}
|
| 3/2 | 2026/08/31 20:39 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 2208 output: 34 thoughts: 137 Thoughts: **Analyzing a Wireless Driver Patch** Okay, so this patch is digging into `drivers/net/wireless/rsi/rsi_91x_mgmt.c`. The specific function being modified is `rsi_hal_load_key`. Right, so this is about Redpine Signals Inc, their 91x wireless driver. I need to refresh my memory on the devices supported; USB, SDIO, probably more. The key question now is, can I reach this driver or device through USB Raw Gadget or syzkaller's USB gadget emulation? Worth investigating. Let's see, what's in `drivers/net/wireless/rsi/` concerning USB? I'll probably start with a `grepper` search or just start reading the files directly. I need to figure out the attack surface here and if this is a viable target for fuzzing. |
| 4/2 | 2026/08/31 20:40 | tool | grepper |
0mArgs:{
"Expression": "rsi_91x_mgmt",
"PathPrefix": "drivers/net/wireless/rsi"
}Results: {
"Output": "drivers/net/wireless/rsi/Makefile=4=rsi_91x-y\t\t\t+= rsi_91x_mac80211.o\ndrivers/net/wireless/rsi/Makefile:5:rsi_91x-y\t\t\t+= rsi_91x_mgmt.o\ndrivers/net/wireless/rsi/Makefile-6-rsi_91x-y\t\t\t+= rsi_91x_hal.o\n"
} |
| 5/2 | 2026/08/31 20:40 | llm | patch-evaluator |
1mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 2675 output: 36 thoughts: 36 Thoughts: Okay, let's dive into this. Here's how I'd approach that problem, as though it were my own thought process: **Diving into the RSI Driver Configuration** Alright, I need to understand how the RSI wireless driver is configured and what options are available. The logical starting point for that, especially within a Linux kernel context, is almost always the `Kconfig` file. I'll go straight to `drivers/net/wireless/rsi/` – that's where I'd expect to find the driver source and, critically, its configuration mechanism. The Kconfig file is the key to understanding how this driver is built into the kernel or as a module, and what build options are available. This will give me a clear picture of whether this particular RSI driver supports different hardware interfaces like USB and SDIO, or perhaps even others that I might not be immediately aware of. I need to see what's configurable during the build process. From here I can start making deductions on how to manipulate it to fit our needs. |
| 6/2 | 2026/08/31 20:41 | tool | read-file |
0mArgs:{
"File": "drivers/net/wireless/rsi/Kconfig",
"FirstLine": 1,
"LineCount": 50
}Results: {
"Contents": " 1:\t# SPDX-License-Identifier: GPL-2.0-only\n 2:\tconfig WLAN_VENDOR_RSI\n 3:\t\tbool \"Redpine Signals Inc devices\"\n 4:\t\tdefault y\n 5:\t\thelp\n 6:\t\t If you have a wireless card belonging to this class, say Y.\n 7:\t\n 8:\t\t Note that the answer to this question doesn't directly affect the\n 9:\t\t kernel: saying N will just cause the configurator to skip all the\n 10:\t\t questions about these cards. If you say Y, you will be asked for\n 11:\t\t your specific card in the following questions.\n 12:\t\n 13:\tif WLAN_VENDOR_RSI\n 14:\t\n 15:\tconfig RSI_91X\n 16:\t\ttristate \"Redpine Signals Inc 91x WLAN driver support\"\n 17:\t\tselect BT_HCIRSI if RSI_COEX\n 18:\t\tdepends on MAC80211\n 19:\t\thelp\n 20:\t\t This option enabes support for RSI 1x1 devices.\n 21:\t\t Select M (recommended), if you have a RSI 1x1 wireless module.\n 22:\t\n 23:\tconfig RSI_DEBUGFS\n 24:\t\tbool \"Redpine Signals Inc debug support\"\n 25:\t\tdepends on RSI_91X\n 26:\t\tdefault y\n 27:\t\thelp\n 28:\t\t Say Y, if you would like to enable debug support. This option\n 29:\t\t creates debugfs entries\n 30:\t\n 31:\tconfig RSI_SDIO\n 32:\t\ttristate \"Redpine Signals SDIO bus support\"\n 33:\t\tdepends on MMC \u0026\u0026 RSI_91X\n 34:\t\tdefault m\n 35:\t\thelp\n 36:\t\t This option enables the SDIO bus support in rsi drivers.\n 37:\t\t Select M (recommended), if you have a RSI 1x1 wireless module.\n 38:\t\n 39:\tconfig RSI_USB\n 40:\t\ttristate \"Redpine Signals USB bus support\"\n 41:\t\tdepends on USB \u0026\u0026 RSI_91X\n 42:\t\tdefault m\n 43:\t\thelp\n 44:\t\t This option enables the USB bus support in rsi drivers.\n 45:\t\t Select M (recommended), if you have a RSI 1x1 wireless module.\n 46:\t\n 47:\tconfig RSI_COEX\n 48:\t\tbool \"Redpine Signals WLAN BT Coexistence support\"\n 49:\t\tdepends on BT \u0026\u0026 RSI_91X\n 50:\t\tdepends on !(BT=m \u0026\u0026 RSI_91X=y)\n"
} |
| 7/2 | 2026/08/31 20:41 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 3650 output: 34 thoughts: 98 Thoughts: **Analyzing the USB Driver Implementation** Okay, so `RSI_USB` is the key, meaning the code uses the USB bus (`CONFIG_RSI_USB`, `CONFIG_RSI_91X`). My initial thought is to explore the USB drivers, and I know that I can leverage the USB Raw Gadget or syzkaller fuzzing, especially within a virtualized environment. That would allow for emulation and more robust testing. But before I dive into any of that, I need to understand a specific function call: `rsi_hal_load_key`. Let me quickly check where that function is being used. Time to grep for `rsi_hal_load_key`. I need to figure out the context of that function to continue. |
| 8/2 | 2026/08/31 20:41 | tool | grepper |
0mArgs:{
"Expression": "rsi_hal_load_key",
"PathPrefix": "drivers/net/wireless/rsi"
}Results: {
"Output": "drivers/net/wireless/rsi/rsi_91x_mac80211.c=976=static int rsi_hal_key_config(struct ieee80211_hw *hw,\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1005-\t\t (key-\u003ecipher == WLAN_CIPHER_SUITE_WEP40)) {\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c:1006:\t\t\tstatus = rsi_hal_load_key(adapter-\u003epriv,\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1007-\t\t\t\t\t\t key-\u003ekey,\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1018-\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c:1019:\tstatus = rsi_hal_load_key(adapter-\u003epriv,\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1020-\t\t\t\t key-\u003ekey,\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c=1422=static int rsi_mac80211_sta_add(struct ieee80211_hw *hw,\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1494-\t\t\t\t (key-\u003ecipher == WLAN_CIPHER_SUITE_WEP40))\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c:1495:\t\t\t\t\trsi_hal_load_key(adapter-\u003epriv,\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1496-\t\t\t\t\t\t\t key-\u003ekey,\n--\ndrivers/net/wireless/rsi/rsi_91x_mgmt.c=711=int rsi_set_vap_capabilities(struct rsi_common *common,\n--\ndrivers/net/wireless/rsi/rsi_91x_mgmt.c-780-/**\ndrivers/net/wireless/rsi/rsi_91x_mgmt.c:781: * rsi_hal_load_key() - This function is used to load keys within the firmware.\ndrivers/net/wireless/rsi/rsi_91x_mgmt.c-782- * @common: Pointer to the driver private structure.\n--\ndrivers/net/wireless/rsi/rsi_91x_mgmt.c-792- */\ndrivers/net/wireless/rsi/rsi_91x_mgmt.c:793:int rsi_hal_load_key(struct rsi_common *common,\ndrivers/net/wireless/rsi/rsi_91x_mgmt.c-794-\t\t u8 *data,\n--\ndrivers/net/wireless/rsi/rsi_mgmt.h=717=int rsi_send_aggregation_params_frame(struct rsi_common *common, u16 tid,\n--\ndrivers/net/wireless/rsi/rsi_mgmt.h-719-\t\t\t\t u8 sta_id);\ndrivers/net/wireless/rsi/rsi_mgmt.h:720:int rsi_hal_load_key(struct rsi_common *common, u8 *data, u16 key_len,\ndrivers/net/wireless/rsi/rsi_mgmt.h-721-\t\t u8 key_type, u8 key_id, u32 cipher, s16 sta_id,\n"
} |
| 9/2 | 2026/08/31 20:41 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 4847 output: 45 thoughts: 31 Thoughts: Here's a summary of my thought process: **Diving into the Code: Understanding the Key Change** Okay, so we've got a modification here, and my initial instinct is to dig into the surrounding code. I need to understand the *why* behind this. The best approach is to examine `rsi_hal_load_key` and `rsi_hal_key_config`. Looking at these functions will give me the contextual clues I need. Specifically, by reviewing these, I'm expecting to gain insights into how the key loading process functions within this specific HAL (Hardware Abstraction Layer). I anticipate finding out what the key loading routines do, the config requirements, and how this particular modification plays into the broader architecture. Hopefully I can understand the impact of the change with this approach. |
| 10/2 | 2026/08/31 20:41 | tool | read-file |
0mArgs:{
"File": "drivers/net/wireless/rsi/rsi_91x_mgmt.c",
"FirstLine": 790,
"LineCount": 80
}Results: {
"Contents": " 790:\t *\n 791:\t * Return: 0 on success, -1 on failure.\n 792:\t */\n 793:\tint rsi_hal_load_key(struct rsi_common *common,\n 794:\t\t\t u8 *data,\n 795:\t\t\t u16 key_len,\n 796:\t\t\t u8 key_type,\n 797:\t\t\t u8 key_id,\n 798:\t\t\t u32 cipher,\n 799:\t\t\t s16 sta_id,\n 800:\t\t\t struct ieee80211_vif *vif)\n 801:\t{\n 802:\t\tstruct sk_buff *skb = NULL;\n 803:\t\tstruct rsi_set_key *set_key;\n 804:\t\tu16 key_descriptor = 0;\n 805:\t\tu16 frame_len = sizeof(struct rsi_set_key);\n 806:\t\n 807:\t\trsi_dbg(MGMT_TX_ZONE, \"%s: Sending load key frame\\n\", __func__);\n 808:\t\n 809:\t\tskb = dev_alloc_skb(frame_len);\n 810:\t\tif (!skb) {\n 811:\t\t\trsi_dbg(ERR_ZONE, \"%s: Failed in allocation of skb\\n\",\n 812:\t\t\t\t__func__);\n 813:\t\t\treturn -ENOMEM;\n 814:\t\t}\n 815:\t\n 816:\t\tmemset(skb-\u003edata, 0, frame_len);\n 817:\t\tset_key = (struct rsi_set_key *)skb-\u003edata;\n 818:\t\n 819:\t\tif (key_type == RSI_GROUP_KEY) {\n 820:\t\t\tkey_descriptor = RSI_KEY_TYPE_BROADCAST;\n 821:\t\t\tif (vif-\u003etype == NL80211_IFTYPE_AP)\n 822:\t\t\t\tkey_descriptor |= RSI_KEY_MODE_AP;\n 823:\t\t}\n 824:\t\tif ((cipher == WLAN_CIPHER_SUITE_WEP40) ||\n 825:\t\t (cipher == WLAN_CIPHER_SUITE_WEP104)) {\n 826:\t\t\tkey_id = 0;\n 827:\t\t\tkey_descriptor |= RSI_WEP_KEY;\n 828:\t\t\tif (key_len \u003e= 13)\n 829:\t\t\t\tkey_descriptor |= RSI_WEP_KEY_104;\n 830:\t\t} else if (cipher != KEY_TYPE_CLEAR) {\n 831:\t\t\tkey_descriptor |= RSI_CIPHER_WPA;\n 832:\t\t\tif (cipher == WLAN_CIPHER_SUITE_TKIP)\n 833:\t\t\t\tkey_descriptor |= RSI_CIPHER_TKIP;\n 834:\t\t}\n 835:\t\tkey_descriptor |= RSI_PROTECT_DATA_FRAMES;\n 836:\t\tkey_descriptor |= (key_id \u003c\u003c RSI_KEY_ID_OFFSET);\n 837:\t\n 838:\t\trsi_set_len_qno(\u0026set_key-\u003edesc_dword0.len_qno,\n 839:\t\t\t\t(frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q);\n 840:\t\tset_key-\u003edesc_dword0.frame_type = SET_KEY_REQ;\n 841:\t\tset_key-\u003ekey_desc = cpu_to_le16(key_descriptor);\n 842:\t\tset_key-\u003esta_id = sta_id;\n 843:\t\n 844:\t\tif (data) {\n 845:\t\t\tif ((cipher == WLAN_CIPHER_SUITE_WEP40) ||\n 846:\t\t\t (cipher == WLAN_CIPHER_SUITE_WEP104)) {\n 847:\t\t\t\tmemcpy(\u0026set_key-\u003ekey[key_id][1], data, key_len * 2);\n 848:\t\t\t} else {\n 849:\t\t\t\tmemcpy(\u0026set_key-\u003ekey[0][0], data, key_len);\n 850:\t\t\t}\n 851:\t\t\tif (cipher == WLAN_CIPHER_SUITE_TKIP) {\n 852:\t\t\t\tmemcpy(set_key-\u003etx_mic_key, \u0026data[16], 8);\n 853:\t\t\t\tmemcpy(set_key-\u003erx_mic_key, \u0026data[24], 8);\n 854:\t\t\t}\n 855:\t\t} else {\n 856:\t\t\tmemset(\u0026set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ);\n 857:\t\t}\n 858:\t\n 859:\t\tskb_put(skb, frame_len);\n 860:\t\n 861:\t\treturn rsi_send_internal_mgmt_frame(common, skb);\n 862:\t}\n 863:\t\n 864:\t/*\n 865:\t * This function sends the common device configuration parameters to device.\n 866:\t * This frame includes the useful information to make device works on\n 867:\t * specific operating mode.\n 868:\t */\n 869:\tstatic int rsi_send_common_dev_params(struct rsi_common *common)\n"
} |
| 11/2 | 2026/08/31 20:41 | llm | patch-evaluator |
1mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 6482 output: 34 thoughts: 244 Thoughts: **My Analysis of the `rsi` Kernel Driver Bugfix** Okay, let's break this down. First, before the fix, the code was making unconditional `memcpy` calls: `memcpy(set_key->tx_mic_key, &data[16], 8);` and `memcpy(set_key->rx_mic_key, &data[24], 8);`. This was problematic. The issue was that the code was assuming a minimum data size (specifically, that `data` was at least 32 bytes long). It did this regardless of the actual key length (`key_len`), which can be smaller (e.g., 16 bytes for CCMP/AES). So, if `key_len` was less than 32, it was definitely leading to out-of-bounds reads. Classic memory corruption vulnerability! The fix, thank goodness, addresses this by adding a crucial check: `if (cipher == WLAN_CIPHER_SUITE_TKIP)`. That's a solid defense. By only executing those `memcpy` calls when the cipher suite is TKIP, it effectively prevents the out-of-bounds reads for other ciphers where the data length is shorter. This is a legitimate bugfix and a pretty straightforward one at that. A good find. Now, my mind is already thinking about exploitability. I need to figure out how reachable this is. I need to see if `rsi_hal_load_key` is something I can trigger in a virtualized environment like QEMU or using USB emulation tools like Syzkaller. Hmm, and the `rsi_91x` driver, it *does* have USB interface support according to `CONFIG_RSI_USB`. Okay, I need to check how the USB device probe works for RSI. That's a good place to start my investigation. |
| 12/2 | 2026/08/31 20:43 | tool | grepper |
0mArgs:{
"Expression": "rsi_probe|rsi_usb",
"PathPrefix": "drivers/net/wireless/rsi"
}Results: {
"Output": "drivers/net/wireless/rsi/Makefile=9=rsi_91x-$(CONFIG_RSI_DEBUGFS)\t+= rsi_91x_debugfs.o\ndrivers/net/wireless/rsi/Makefile-10-\ndrivers/net/wireless/rsi/Makefile:11:rsi_usb-y\t\t\t+= rsi_91x_usb.o rsi_91x_usb_ops.o\ndrivers/net/wireless/rsi/Makefile-12-rsi_sdio-y\t\t\t+= rsi_91x_sdio.o rsi_91x_sdio_ops.o\n--\ndrivers/net/wireless/rsi/Makefile=14=obj-$(CONFIG_RSI_SDIO)\t\t+= rsi_sdio.o\ndrivers/net/wireless/rsi/Makefile:15:obj-$(CONFIG_RSI_USB)\t\t+= rsi_usb.o\n--\ndrivers/net/wireless/rsi/rsi_91x_main.c-25-#include \"rsi_hal.h\"\ndrivers/net/wireless/rsi/rsi_91x_main.c:26:#include \"rsi_usb.h\"\ndrivers/net/wireless/rsi/rsi_91x_main.c-27-\n--\ndrivers/net/wireless/rsi/rsi_91x_sdio.c=979=static struct rsi_host_intf_ops sdio_host_intf_ops = {\n--\ndrivers/net/wireless/rsi/rsi_91x_sdio.c-992-/**\ndrivers/net/wireless/rsi/rsi_91x_sdio.c:993: * rsi_probe() - This function is called by kernel when the driver provided\ndrivers/net/wireless/rsi/rsi_91x_sdio.c-994- *\t\t Vendor and device IDs are matched. All the initialization\n--\ndrivers/net/wireless/rsi/rsi_91x_sdio.c-1000- */\ndrivers/net/wireless/rsi/rsi_91x_sdio.c:1001:static int rsi_probe(struct sdio_func *pfunction,\ndrivers/net/wireless/rsi/rsi_91x_sdio.c-1002-\t\t const struct sdio_device_id *id)\n--\ndrivers/net/wireless/rsi/rsi_91x_sdio.c=1509=static struct sdio_driver rsi_driver = {\ndrivers/net/wireless/rsi/rsi_91x_sdio.c-1510-\t.name = \"RSI-SDIO WLAN\",\ndrivers/net/wireless/rsi/rsi_91x_sdio.c:1511:\t.probe = rsi_probe,\ndrivers/net/wireless/rsi/rsi_91x_sdio.c-1512-\t.remove = rsi_disconnect,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-20-#include \u003cnet/rsi_91x.h\u003e\ndrivers/net/wireless/rsi/rsi_91x_usb.c:21:#include \"rsi_usb.h\"\ndrivers/net/wireless/rsi/rsi_91x_usb.c-22-#include \"rsi_hal.h\"\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c=30=static int rsi_rx_urb_submit(struct rsi_hw *adapter, u8 ep_num, gfp_t flags);\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-32-/**\ndrivers/net/wireless/rsi/rsi_91x_usb.c:33: * rsi_usb_card_write() - This function writes to the USB Card.\ndrivers/net/wireless/rsi/rsi_91x_usb.c-34- * @adapter: Pointer to the adapter structure.\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-40- */\ndrivers/net/wireless/rsi/rsi_91x_usb.c:41:static int rsi_usb_card_write(struct rsi_hw *adapter,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-42-\t\t\t u8 *buf,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c=81=static int rsi_write_multiple(struct rsi_hw *adapter,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-97-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:98:\treturn rsi_usb_card_write(adapter, data, count, endpoint);\ndrivers/net/wireless/rsi/rsi_91x_usb.c-99-}\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c=109=static int rsi_find_bulk_in_and_out_endpoints(struct usb_interface *interface,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-166-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:167:/* rsi_usb_reg_read() - This function reads data from given register address.\ndrivers/net/wireless/rsi/rsi_91x_usb.c-168- * @usbdev: Pointer to the usb_device structure.\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-174- */\ndrivers/net/wireless/rsi/rsi_91x_usb.c:175:static int rsi_usb_reg_read(struct usb_device *usbdev,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-176-\t\t\t u32 reg,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-210-/**\ndrivers/net/wireless/rsi/rsi_91x_usb.c:211: * rsi_usb_reg_write() - This function writes the given data into the given\ndrivers/net/wireless/rsi/rsi_91x_usb.c-212- *\t\t\t register address.\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-219- */\ndrivers/net/wireless/rsi/rsi_91x_usb.c:220:static int rsi_usb_reg_write(struct usb_device *usbdev,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-221-\t\t\t u32 reg,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c=324=static int rsi_rx_urb_submit(struct rsi_hw *adapter, u8 ep_num, gfp_t mem_flags)\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-361-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:362:static int rsi_usb_read_register_multiple(struct rsi_hw *adapter, u32 addr,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-363-\t\t\t\t\t u8 *data, u16 count)\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-402-/**\ndrivers/net/wireless/rsi/rsi_91x_usb.c:403: * rsi_usb_write_register_multiple() - This function writes multiple bytes of\ndrivers/net/wireless/rsi/rsi_91x_usb.c-404- *\t\t\t\t information to multiple registers.\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-411- */\ndrivers/net/wireless/rsi/rsi_91x_usb.c:412:static int rsi_usb_write_register_multiple(struct rsi_hw *adapter, u32 addr,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-413-\t\t\t\t\t u8 *data, u16 count)\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-452-/**\ndrivers/net/wireless/rsi/rsi_91x_usb.c:453: *rsi_usb_host_intf_write_pkt() - This function writes the packet to the\ndrivers/net/wireless/rsi/rsi_91x_usb.c-454- *\t\t\t\t USB card.\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-460- */\ndrivers/net/wireless/rsi/rsi_91x_usb.c:461:static int rsi_usb_host_intf_write_pkt(struct rsi_hw *adapter,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-462-\t\t\t\t u8 *pkt,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-476-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:477:static int rsi_usb_master_reg_read(struct rsi_hw *adapter, u32 reg,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-478-\t\t\t\t u32 *value, u16 len)\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-484-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:485:\tret = rsi_usb_reg_read(usbdev, reg, \u0026temp, len);\ndrivers/net/wireless/rsi/rsi_91x_usb.c-486-\tif (ret \u003c 0)\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-492-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:493:static int rsi_usb_master_reg_write(struct rsi_hw *adapter,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-494-\t\t\t\t unsigned long reg,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-499-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:500:\treturn rsi_usb_reg_write(usbdev, reg, value, len);\ndrivers/net/wireless/rsi/rsi_91x_usb.c-501-}\ndrivers/net/wireless/rsi/rsi_91x_usb.c-502-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:503:static int rsi_usb_load_data_master_write(struct rsi_hw *adapter,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-504-\t\t\t\t\t u32 base_address,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-517-\t\tmemcpy(temp_buf, ta_firmware + cur_indx, block_size);\ndrivers/net/wireless/rsi/rsi_91x_usb.c:518:\t\tstatus = rsi_usb_write_register_multiple(adapter, base_address,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-519-\t\t\t\t\t\t\t (u8 *)(temp_buf),\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-531-\t\t instructions_sz % block_size);\ndrivers/net/wireless/rsi/rsi_91x_usb.c:532:\t\tstatus = rsi_usb_write_register_multiple\ndrivers/net/wireless/rsi/rsi_91x_usb.c-533-\t\t\t\t\t\t(adapter, base_address,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c=545=static struct rsi_host_intf_ops usb_host_intf_ops = {\ndrivers/net/wireless/rsi/rsi_91x_usb.c:546:\t.write_pkt\t\t= rsi_usb_host_intf_write_pkt,\ndrivers/net/wireless/rsi/rsi_91x_usb.c:547:\t.read_reg_multiple\t= rsi_usb_read_register_multiple,\ndrivers/net/wireless/rsi/rsi_91x_usb.c:548:\t.write_reg_multiple\t= rsi_usb_write_register_multiple,\ndrivers/net/wireless/rsi/rsi_91x_usb.c:549:\t.master_reg_read\t= rsi_usb_master_reg_read,\ndrivers/net/wireless/rsi/rsi_91x_usb.c:550:\t.master_reg_write\t= rsi_usb_master_reg_write,\ndrivers/net/wireless/rsi/rsi_91x_usb.c:551:\t.load_data_master_write\t= rsi_usb_load_data_master_write,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-552-};\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c=560=static void rsi_deinit_usb_interface(struct rsi_hw *adapter)\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-572-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:573:static int rsi_usb_init_rx(struct rsi_hw *adapter)\ndrivers/net/wireless/rsi/rsi_91x_usb.c-574-{\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-594-\tif (rsi_create_kthread(adapter-\u003epriv, \u0026dev-\u003erx_thread,\ndrivers/net/wireless/rsi/rsi_91x_usb.c:595:\t\t\t rsi_usb_rx_thread, \"RX-Thread\")) {\ndrivers/net/wireless/rsi/rsi_91x_usb.c-596-\t\trsi_dbg(ERR_ZONE, \"%s: Unable to init rx thrd\\n\", __func__);\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c=617=static int rsi_init_usb_interface(struct rsi_hw *adapter,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-644-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:645:\tif (rsi_usb_init_rx(adapter)) {\ndrivers/net/wireless/rsi/rsi_91x_usb.c-646-\t\trsi_dbg(ERR_ZONE, \"Failed to init RX handle\\n\");\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-654-\t/* Initializing function callbacks */\ndrivers/net/wireless/rsi/rsi_91x_usb.c:655:\tadapter-\u003echeck_hw_queue_status = rsi_usb_check_queue_status;\ndrivers/net/wireless/rsi/rsi_91x_usb.c:656:\tadapter-\u003edetermine_event_timeout = rsi_usb_event_timeout;\ndrivers/net/wireless/rsi/rsi_91x_usb.c-657-\tadapter-\u003ersi_host_intf = RSI_HOST_INTF_USB;\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c=676=static int usb_ulp_read_write(struct rsi_hw *adapter, u16 addr, u32 data,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-680-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:681:\tret = rsi_usb_master_reg_write\ndrivers/net/wireless/rsi/rsi_91x_usb.c-682-\t\t\t(adapter, RSI_GSPI_DATA_REG1,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-686-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:687:\tret = rsi_usb_master_reg_write(adapter, RSI_GSPI_DATA_REG0,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-688-\t\t\t\t (data \u0026 0xffff), 2);\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-692-\t/* Initializing GSPI for ULP read/writes */\ndrivers/net/wireless/rsi/rsi_91x_usb.c:693:\trsi_usb_master_reg_write(adapter, RSI_GSPI_CTRL_REG0,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-694-\t\t\t\t RSI_GSPI_CTRL_REG0_VALUE, 2);\ndrivers/net/wireless/rsi/rsi_91x_usb.c-695-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:696:\tret = rsi_usb_master_reg_write(adapter, RSI_GSPI_CTRL_REG1,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-697-\t\t\t\t ((len_in_bits - 1) | RSI_GSPI_TRIG), 2);\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c=706=static int rsi_reset_card(struct rsi_hw *adapter)\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-710-\trsi_dbg(INFO_ZONE, \"Resetting Card...\\n\");\ndrivers/net/wireless/rsi/rsi_91x_usb.c:711:\trsi_usb_master_reg_write(adapter, RSI_TA_HOLD_REG, 0xE, 4);\ndrivers/net/wireless/rsi/rsi_91x_usb.c-712-\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-717-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:718:\tret = rsi_usb_master_reg_write(adapter, SWBL_REGOUT,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-719-\t\t\t\t RSI_FW_WDT_DISABLE_REQ,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-747-\t} else {\ndrivers/net/wireless/rsi/rsi_91x_usb.c:748:\t\tret = rsi_usb_master_reg_write(adapter,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-749-\t\t\t\t\t NWP_WWD_INTERRUPT_TIMER,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-753-\t\t\tgoto fail;\ndrivers/net/wireless/rsi/rsi_91x_usb.c:754:\t\tret = rsi_usb_master_reg_write(adapter,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-755-\t\t\t\t\t NWP_WWD_SYSTEM_RESET_TIMER,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-759-\t\t\tgoto fail;\ndrivers/net/wireless/rsi/rsi_91x_usb.c:760:\t\tret = rsi_usb_master_reg_write(adapter,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-761-\t\t\t\t\t NWP_WWD_MODE_AND_RSTART,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-776-/**\ndrivers/net/wireless/rsi/rsi_91x_usb.c:777: * rsi_probe() - This function is called by kernel when the driver provided\ndrivers/net/wireless/rsi/rsi_91x_usb.c-778- *\t\t Vendor and device IDs are matched. All the initialization\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-784- */\ndrivers/net/wireless/rsi/rsi_91x_usb.c:785:static int rsi_probe(struct usb_interface *pfunction,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-786-\t\t const struct usb_device_id *id)\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c-826-\ndrivers/net/wireless/rsi/rsi_91x_usb.c:827:\tstatus = rsi_usb_reg_read(dev-\u003eusbdev, FW_STATUS_REG, \u0026fw_status, 2);\ndrivers/net/wireless/rsi/rsi_91x_usb.c-828-\tif (status \u003c 0)\n--\ndrivers/net/wireless/rsi/rsi_91x_usb.c=921=static struct usb_driver rsi_driver = {\ndrivers/net/wireless/rsi/rsi_91x_usb.c-922-\t.name = \"RSI-USB WLAN\",\ndrivers/net/wireless/rsi/rsi_91x_usb.c:923:\t.probe = rsi_probe,\ndrivers/net/wireless/rsi/rsi_91x_usb.c-924-\t.disconnect = rsi_disconnect,\n--\ndrivers/net/wireless/rsi/rsi_91x_usb_ops.c-18-#include \u003clinux/firmware.h\u003e\ndrivers/net/wireless/rsi/rsi_91x_usb_ops.c:19:#include \"rsi_usb.h\"\ndrivers/net/wireless/rsi/rsi_91x_usb_ops.c-20-\ndrivers/net/wireless/rsi/rsi_91x_usb_ops.c-21-/**\ndrivers/net/wireless/rsi/rsi_91x_usb_ops.c:22: * rsi_usb_rx_thread() - This is a kernel thread to receive the packets from\ndrivers/net/wireless/rsi/rsi_91x_usb_ops.c-23- *\t\t\t the USB device.\n--\ndrivers/net/wireless/rsi/rsi_91x_usb_ops.c-27- */\ndrivers/net/wireless/rsi/rsi_91x_usb_ops.c:28:void rsi_usb_rx_thread(struct rsi_common *common)\ndrivers/net/wireless/rsi/rsi_91x_usb_ops.c-29-{\n--\ndrivers/net/wireless/rsi/rsi_usb.h=56=struct rsi_91x_usbdev {\n--\ndrivers/net/wireless/rsi/rsi_usb.h-72-\ndrivers/net/wireless/rsi/rsi_usb.h:73:static inline int rsi_usb_check_queue_status(struct rsi_hw *adapter, u8 q_num)\ndrivers/net/wireless/rsi/rsi_usb.h-74-{\n--\ndrivers/net/wireless/rsi/rsi_usb.h-78-\ndrivers/net/wireless/rsi/rsi_usb.h:79:static inline int rsi_usb_event_timeout(struct rsi_hw *adapter)\ndrivers/net/wireless/rsi/rsi_usb.h-80-{\n--\ndrivers/net/wireless/rsi/rsi_usb.h-83-\ndrivers/net/wireless/rsi/rsi_usb.h:84:void rsi_usb_rx_thread(struct rsi_common *common);\ndrivers/net/wireless/rsi/rsi_usb.h-85-#endif\n"
} |
| 13/2 | 2026/08/31 20:43 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 13074 output: 45 thoughts: 103 Thoughts: **Diving into the RSI Wi-Fi Driver Key Configuration** Okay, so I need to understand the key configuration process within the RSI Wi-Fi driver, specifically the 91x variant. Let's start by looking at `rsi_hal_key_config` within `drivers/net/wireless/rsi/rsi_91x_mac80211.c`. My initial question is how this key configuration is actually triggered. I'm betting it's a `mac80211` callback. Yes, that makes sense. It's likely going to be handled by the `set_key` handler within `rsi_mac80211_ops`. Now, to confirm my assumptions and get a clearer picture of the call chain, I'm going to quickly grep through the code for instances of both `rsi_hal_key_config` and `rsi_mac80211_ops`. That should quickly highlight the connection points. |
| 14/2 | 2026/08/31 20:43 | tool | grepper |
0mArgs:{
"Expression": "rsi_hal_key_config|rsi_mac80211_ops",
"PathPrefix": "drivers/net/wireless/rsi"
}Results: {
"Output": "drivers/net/wireless/rsi/rsi_91x_mac80211.c=916=static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw,\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-967-/**\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c:968: * rsi_hal_key_config() - This function loads the keys into the firmware.\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-969- * @hw: Pointer to the ieee80211_hw structure.\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-975- */\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c:976:static int rsi_hal_key_config(struct ieee80211_hw *hw,\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-977-\t\t\t struct ieee80211_vif *vif,\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c=1050=static int rsi_mac80211_set_key(struct ieee80211_hw *hw,\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1063-\tcase SET_KEY:\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c:1064:\t\tstatus = rsi_hal_key_config(hw, vif, key, sta);\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1065-\t\tif (status) {\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1083-\t\tmemset(key, 0, sizeof(struct ieee80211_key_conf));\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c:1084:\t\tstatus = rsi_hal_key_config(hw, vif, key, sta);\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1085-\t\tbreak;\n"
} |
| 15/2 | 2026/08/31 20:43 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 14068 output: 39 thoughts: 31 Thoughts: Here's my attempt at summarizing the thought process, tailored for an expert audience: **Diving into RSI Key Management** Okay, so I need to get a handle on how this RSI driver is managing its keys within the 802.11 framework. My initial thought is to zero in on two key functions: `rsi_mac80211_set_key` and, more broadly, the `rsi_mac80211_ops` structure. `rsi_mac80211_set_key` is the likely point of interaction for setting or updating those keys; it'll tell me how they are implemented. Digging into the ops structure, that's where I can find other functions which could be related to key handling. This should give me a good overview of how the driver interacts with the mac80211 core for this critical security function. I expect to see the typical allocation, setup, and insertion of the key material, likely involving some hardware-specific interaction through the driver's own mechanisms. I need to understand how the hardware offloads the encryption/decryption, if at all, and how the driver handles key derivation or rotation. This is where I'll probably find the key to everything else. |
| 16/2 | 2026/08/31 20:43 | tool | grepper |
0mArgs:{
"Expression": "rsi_mac80211_set_key",
"PathPrefix": "drivers/net/wireless/rsi"
}Results: {
"Output": "drivers/net/wireless/rsi/rsi_91x_mac80211.c=976=static int rsi_hal_key_config(struct ieee80211_hw *hw,\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1040-/**\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c:1041: * rsi_mac80211_set_key() - This function sets type of key to be loaded.\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1042- * @hw: Pointer to the ieee80211_hw structure.\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1049- */\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c:1050:static int rsi_mac80211_set_key(struct ieee80211_hw *hw,\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1051-\t\t\t\tenum set_key_cmd cmd,\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c=1982=static const struct ieee80211_ops mac80211_ops = {\n--\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1996-\t.configure_filter = rsi_mac80211_conf_filter,\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c:1997:\t.set_key = rsi_mac80211_set_key,\ndrivers/net/wireless/rsi/rsi_91x_mac80211.c-1998-\t.set_rts_threshold = rsi_mac80211_set_rts_threshold,\n"
} |
| 17/2 | 2026/08/31 20:43 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 14938 output: 32 thoughts: 546 Thoughts: **Analyzing the RSI USB Device Driver Key Handling** Okay, so I'm digging into this RSI USB device driver. It seems like when a USB device is probed using syzkaller's `usb raw gadget` (like `rsi_probe`), `rsi_91x` gets registered with mac80211. My immediate interest is in how encryption keys are managed, particularly because of that patch. Specifically, I'm trying to trace the path from userspace commands to the key loading function. From what I can tell, userspace uses nl80211 to issue `new_key` or `set_key` commands. These ultimately end up calling `rsi_mac80211_set_key`, which in turn calls `rsi_hal_key_config`, and that's the one that calls `rsi_hal_load_key`. Okay, so `rsi_hal_load_key` is the crucial function, and I need to verify its visibility. Let's check the declaration in `rsi_mgmt.h`. Ah, yes, it's: `int rsi_hal_load_key(struct rsi_common *common, u8 *data, u16 key_len, u8 key_type, u8 key_id, u32 cipher, s16 sta_id, struct ieee80211_vif *vif);` The function is *not* static, so it *is* exposed within the `rsi_91x` module. Good, that confirms it. So, the key functions to watch are: `rsi_hal_load_key`, `rsi_hal_key_config`, `rsi_mac80211_set_key` and `rsi_mac80211_sta_add`. I'll want to trace calls to those. But hold on, `rsi_hal_load_key` is the specific function that the patch modifies, which makes it central to the problem. Now, let's look at the Kconfig requirements. `RSI_91X` requires `MAC80211` and `WLAN_VENDOR_RSI`. `RSI_USB` depends on `USB && RSI_91X`. I'll want to check `drivers/net/wireless/rsi/Kconfig`. ``` config WLAN_VENDOR_RSI bool "Redpine Signals Inc devices" default y if WLAN_VENDOR_RSI config RSI_91X tristate "Redpine Signals Inc 91x WLAN driver support" select BT_HCIRSI if RSI_COEX depends on MAC80211 config RSI_USB tristate "Redpine Signals USB bus support" depends on USB && RSI_91X ``` Okay, I'll need to double check the dependency of `WLAN_VENDOR_RSI`, so I'll need to check the main `drivers/net/wireless/Kconfig` file. |
| 18/2 | 2026/08/31 20:43 | tool | grepper |
0mArgs:{
"Expression": "WLAN_VENDOR_RSI",
"PathPrefix": "drivers/net/wireless"
}Results: {
"Output": "drivers/net/wireless/Makefile=18=obj-$(CONFIG_WLAN_VENDOR_REALTEK) += realtek/\ndrivers/net/wireless/Makefile:19:obj-$(CONFIG_WLAN_VENDOR_RSI) += rsi/\ndrivers/net/wireless/Makefile-20-obj-$(CONFIG_WLAN_VENDOR_SILABS) += silabs/\n--\ndrivers/net/wireless/rsi/Kconfig-1-# SPDX-License-Identifier: GPL-2.0-only\ndrivers/net/wireless/rsi/Kconfig:2:config WLAN_VENDOR_RSI\ndrivers/net/wireless/rsi/Kconfig-3-\tbool \"Redpine Signals Inc devices\"\n--\ndrivers/net/wireless/rsi/Kconfig-12-\ndrivers/net/wireless/rsi/Kconfig:13:if WLAN_VENDOR_RSI\ndrivers/net/wireless/rsi/Kconfig-14-\n--\ndrivers/net/wireless/rsi/Kconfig=47=config RSI_COEX\n--\ndrivers/net/wireless/rsi/Kconfig-56-\ndrivers/net/wireless/rsi/Kconfig:57:endif # WLAN_VENDOR_RSI\n"
} |
| 19/2 | 2026/08/31 20:43 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 16469 output: 29 thoughts: 23 Thoughts: Here's my thought process, as if I were considering this issue: **Investigating the RSI/Kconfig Source** Okay, so I need to track down the Kconfig file for the RSI wireless driver. My first instinct, given the typical kernel build structure, is to head directly to the `drivers/net/wireless` directory. Within that, I'm pretty certain the Kconfig file for the RSI driver will be located there. That's usually where these things live. Let's start by checking `drivers/net/wireless/Kconfig` and see if the includes point to it. I'll need to confirm that's where the relevant configuration options are defined. |
| 20/2 | 2026/08/31 20:43 | tool | grepper |
0mArgs:{
"Expression": "rsi/Kconfig",
"PathPrefix": "drivers/net/wireless"
}Results: {
"Output": "drivers/net/wireless/Kconfig=32=source \"drivers/net/wireless/realtek/Kconfig\"\ndrivers/net/wireless/Kconfig:33:source \"drivers/net/wireless/rsi/Kconfig\"\ndrivers/net/wireless/Kconfig-34-source \"drivers/net/wireless/silabs/Kconfig\"\n"
} |
| 21/2 | 2026/08/31 20:43 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 16757 output: 34 thoughts: 20 Thoughts: Here's a summary of my thought process, as requested: **Kconfig Dive** Okay, time to dig in. The problem likely lies within the wireless network configuration, so I'm focusing my attention on `drivers/net/wireless/Kconfig`. I'm going to start my investigation around line 33 of that file. That's a reasonable starting point given the context, and I'm hoping to quickly identify the relevant configuration options that might be contributing to the issue. Line 33 should give a starting point to the relevant kconfig flags, and will guide the next level of investigation. |
| 22/2 | 2026/08/31 20:44 | tool | read-file |
0mArgs:{
"File": "drivers/net/wireless/Kconfig",
"FirstLine": 1,
"LineCount": 40
}Results: {
"Contents": " 1:\t# SPDX-License-Identifier: GPL-2.0-only\n 2:\t#\n 3:\t# Wireless LAN device configuration\n 4:\t#\n 5:\t\n 6:\tmenuconfig WLAN\n 7:\t\tbool \"Wireless LAN\"\n 8:\t\tdepends on !S390\n 9:\t\tdepends on NET\n 10:\t\tselect WIRELESS\n 11:\t\tdefault y\n 12:\t\thelp\n 13:\t\t This section contains all the pre 802.11 and 802.11 wireless\n 14:\t\t device drivers. For a complete list of drivers and documentation\n 15:\t\t on them refer to the wireless wiki:\n 16:\t\n 17:\t\t https://wireless.wiki.kernel.org/en/users/Drivers\n 18:\t\n 19:\tif WLAN\n 20:\t\n 21:\tsource \"drivers/net/wireless/admtek/Kconfig\"\n 22:\tsource \"drivers/net/wireless/ath/Kconfig\"\n 23:\tsource \"drivers/net/wireless/atmel/Kconfig\"\n 24:\tsource \"drivers/net/wireless/broadcom/Kconfig\"\n 25:\tsource \"drivers/net/wireless/intel/Kconfig\"\n 26:\tsource \"drivers/net/wireless/intersil/Kconfig\"\n 27:\tsource \"drivers/net/wireless/marvell/Kconfig\"\n 28:\tsource \"drivers/net/wireless/mediatek/Kconfig\"\n 29:\tsource \"drivers/net/wireless/microchip/Kconfig\"\n 30:\tsource \"drivers/net/wireless/purelifi/Kconfig\"\n 31:\tsource \"drivers/net/wireless/ralink/Kconfig\"\n 32:\tsource \"drivers/net/wireless/realtek/Kconfig\"\n 33:\tsource \"drivers/net/wireless/rsi/Kconfig\"\n 34:\tsource \"drivers/net/wireless/silabs/Kconfig\"\n 35:\tsource \"drivers/net/wireless/st/Kconfig\"\n 36:\tsource \"drivers/net/wireless/ti/Kconfig\"\n 37:\tsource \"drivers/net/wireless/zydas/Kconfig\"\n 38:\tsource \"drivers/net/wireless/quantenna/Kconfig\"\n 39:\t\n 40:\tsource \"drivers/net/wireless/virtual/Kconfig\"\n"
} |
| 23/2 | 2026/08/31 20:44 | llm | patch-evaluator |
1mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 17553 output: 193 thoughts: 341 Thoughts: **My Analysis of the WLAN Patch** Okay, first things first, I need to confirm the relevant configurations are enabled. Let's make sure the essential ones are present: `WLAN`, `WLAN_VENDOR_RSI`, `RSI_91X`, `RSI_USB`, `MAC80211`, and `USB`. Got it, now to double-check everything. This patch is definitely worth fuzzing. I see the dependencies are correctly defined with `WorthFuzzing: true` and the `EnableConfigs` array covers all the required options: `WLAN`, `WLAN_VENDOR_RSI`, `RSI_91X`, `RSI_USB`, `MAC80211`, and `USB`. The focus is clear too, it's those critical functions `rsi_hal_load_key` and `rsi_mac80211_set_key`. The reasoning makes sense; we're dealing with an out-of-bounds memory read in `rsi_hal_load_key` during MIC key copying, and the patch addresses this by adding a check for the `WLAN_CIPHER_SUITE_TKIP` cipher suite. This impacts the Redpine Signals 91x WLAN driver, specifically reachable through `mac80211` key configuration operations, likely on emulated USB devices. Classic. Before I push the results, let me just double-check one last time: `rsi_hal_load_key` and `rsi_mac80211_set_key` are still the critical focus symbols, and the configurations are the same: `WLAN_VENDOR_RSI`, `RSI_91X`, `RSI_USB`, `MAC80211`, and `USB`. Alright, looks good. Time to invoke `set-results`. |
| 24/2 | 2026/08/31 20:45 | tool | set-results |
0mArgs:{
"EnableConfigs": [
"WLAN",
"WLAN_VENDOR_RSI",
"RSI_91X",
"RSI_USB",
"MAC80211",
"USB"
],
"FocusSymbols": [
"rsi_hal_load_key",
"rsi_mac80211_set_key"
],
"Reasoning": "The patch fixes an out-of-bounds memory read bug in rsi_hal_load_key by restricting copying of the TX and RX MIC keys from the data buffer to only when the cipher suite is WLAN_CIPHER_SUITE_TKIP (preventing OOB reads for key lengths shorter than 32 bytes like AES/CCMP). This driver logic is reachable via mac80211 set_key callbacks with emulated USB devices.",
"WorthFuzzing": true
}Results: {
"EnableConfigs": [
"WLAN",
"WLAN_VENDOR_RSI",
"RSI_91X",
"RSI_USB",
"MAC80211",
"USB"
],
"FocusSymbols": [
"rsi_hal_load_key",
"rsi_mac80211_set_key"
],
"Reasoning": "The patch fixes an out-of-bounds memory read bug in rsi_hal_load_key by restricting copying of the TX and RX MIC keys from the data buffer to only when the cipher suite is WLAN_CIPHER_SUITE_TKIP (preventing OOB reads for key lengths shorter than 32 bytes like AES/CCMP). This driver logic is reachable via mac80211 set_key callbacks with emulated USB devices.",
"WorthFuzzing": true
} |
| 25/1 | 2026/08/31 20:45 | action | If |
0mArgs:{
"WorthFuzzing": true
}Results: null |
| 26/2 | 2026/08/31 20:45 | agent | kmsan-evaluator |
0mModel:core Args: null Results: {
"KMSANReasoning": "The patch fixes an out-of-bounds read bug in rsi_hal_load_key() where 8-byte TX and RX MIC keys were unconditionally read from \u0026data[16] and \u0026data[24], even when the cipher suite was not TKIP (such as CCMP/AES where the key buffer is only 16 bytes long).\n\n1. KASAN applicability: Out-of-bounds reads on heap or stack buffers (such as accessing past the 16-byte key buffer) are directly detectable by KASAN.\n2. KMSAN applicability: The frame buffer in the skb is fully zero-initialized upfront via `memset(skb-\u003edata, 0, frame_len)`. No uninitialized memory is read, copied to user space, or used in control flow.\n\nSince the issue is strictly an out-of-bounds memory access caught by KASAN and there are no uninitialized memory risks or info-leaks, a dedicated KMSAN fuzzing session is not needed.",
"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 d39d22f5ed6eb15a0453239f4ba0246af1c859aa
Author: syz-cluster <triage@syzkaller.com>
Date: Mon Aug 31 20:39:39 2026 +0000
syz-cluster: applied patch under review
diff --git a/drivers/net/wireless/rsi/rsi_91x_mgmt.c b/drivers/net/wireless/rsi/rsi_91x_mgmt.c
index 7f2c1608f2ce3..2ddf4d158bfe3 100644
--- a/drivers/net/wireless/rsi/rsi_91x_mgmt.c
+++ b/drivers/net/wireless/rsi/rsi_91x_mgmt.c
@@ -848,8 +848,10 @@ int rsi_hal_load_key(struct rsi_common *common,
} else {
memcpy(&set_key->key[0][0], data, key_len);
}
- memcpy(set_key->tx_mic_key, &data[16], 8);
- memcpy(set_key->rx_mic_key, &data[24], 8);
+ if (cipher == WLAN_CIPHER_SUITE_TKIP) {
+ memcpy(set_key->tx_mic_key, &data[16], 8);
+ memcpy(set_key->rx_mic_key, &data[24], 8);
+ }
} else {
memset(&set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ);
}
|
| 27/3 | 2026/08/31 20:45 | llm | kmsan-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 2205 output: 45 thoughts: 59 Thoughts: Okay, let's dive into this. **Examining the Key Loading Function in the RSI Driver** Alright, I'm going to take a look at the `rsi_91x_mgmt.c` file, specifically the area around the `rsi_hal_load_key` function within the wireless networking driver. I need to get a clear picture of how this key loading process works, and the details surrounding it. I'm going to use `read-file` to get the source code of `rsi_hal_load_key`. Let's see what's going on there. |
| 28/3 | 2026/08/31 20:45 | tool | read-file |
0mArgs:{
"File": "drivers/net/wireless/rsi/rsi_91x_mgmt.c",
"FirstLine": 820,
"LineCount": 60
}Results: {
"Contents": " 820:\t\t\tkey_descriptor = RSI_KEY_TYPE_BROADCAST;\n 821:\t\t\tif (vif-\u003etype == NL80211_IFTYPE_AP)\n 822:\t\t\t\tkey_descriptor |= RSI_KEY_MODE_AP;\n 823:\t\t}\n 824:\t\tif ((cipher == WLAN_CIPHER_SUITE_WEP40) ||\n 825:\t\t (cipher == WLAN_CIPHER_SUITE_WEP104)) {\n 826:\t\t\tkey_id = 0;\n 827:\t\t\tkey_descriptor |= RSI_WEP_KEY;\n 828:\t\t\tif (key_len \u003e= 13)\n 829:\t\t\t\tkey_descriptor |= RSI_WEP_KEY_104;\n 830:\t\t} else if (cipher != KEY_TYPE_CLEAR) {\n 831:\t\t\tkey_descriptor |= RSI_CIPHER_WPA;\n 832:\t\t\tif (cipher == WLAN_CIPHER_SUITE_TKIP)\n 833:\t\t\t\tkey_descriptor |= RSI_CIPHER_TKIP;\n 834:\t\t}\n 835:\t\tkey_descriptor |= RSI_PROTECT_DATA_FRAMES;\n 836:\t\tkey_descriptor |= (key_id \u003c\u003c RSI_KEY_ID_OFFSET);\n 837:\t\n 838:\t\trsi_set_len_qno(\u0026set_key-\u003edesc_dword0.len_qno,\n 839:\t\t\t\t(frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q);\n 840:\t\tset_key-\u003edesc_dword0.frame_type = SET_KEY_REQ;\n 841:\t\tset_key-\u003ekey_desc = cpu_to_le16(key_descriptor);\n 842:\t\tset_key-\u003esta_id = sta_id;\n 843:\t\n 844:\t\tif (data) {\n 845:\t\t\tif ((cipher == WLAN_CIPHER_SUITE_WEP40) ||\n 846:\t\t\t (cipher == WLAN_CIPHER_SUITE_WEP104)) {\n 847:\t\t\t\tmemcpy(\u0026set_key-\u003ekey[key_id][1], data, key_len * 2);\n 848:\t\t\t} else {\n 849:\t\t\t\tmemcpy(\u0026set_key-\u003ekey[0][0], data, key_len);\n 850:\t\t\t}\n 851:\t\t\tif (cipher == WLAN_CIPHER_SUITE_TKIP) {\n 852:\t\t\t\tmemcpy(set_key-\u003etx_mic_key, \u0026data[16], 8);\n 853:\t\t\t\tmemcpy(set_key-\u003erx_mic_key, \u0026data[24], 8);\n 854:\t\t\t}\n 855:\t\t} else {\n 856:\t\t\tmemset(\u0026set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ);\n 857:\t\t}\n 858:\t\n 859:\t\tskb_put(skb, frame_len);\n 860:\t\n 861:\t\treturn rsi_send_internal_mgmt_frame(common, skb);\n 862:\t}\n 863:\t\n 864:\t/*\n 865:\t * This function sends the common device configuration parameters to device.\n 866:\t * This frame includes the useful information to make device works on\n 867:\t * specific operating mode.\n 868:\t */\n 869:\tstatic int rsi_send_common_dev_params(struct rsi_common *common)\n 870:\t{\n 871:\t\tstruct sk_buff *skb;\n 872:\t\tu16 frame_len;\n 873:\t\tstruct rsi_config_vals *dev_cfgs;\n 874:\t\n 875:\t\tframe_len = sizeof(struct rsi_config_vals);\n 876:\t\n 877:\t\trsi_dbg(MGMT_TX_ZONE, \"Sending common device config params\\n\");\n 878:\t\tskb = dev_alloc_skb(frame_len);\n 879:\t\tif (!skb) {\n"
} |
| 29/3 | 2026/08/31 20:45 | llm | kmsan-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 3513 output: 45 thoughts: 16 Thoughts: Here's a summary of my thought process, as if I were analyzing that function: **Diving into `rsi_hal_load_key` - Context is Key** Okay, so I'm looking at `rsi_hal_load_key`, and the first thing I do is mentally rewind. I need to understand what's *preceding* this function call. I need the context. What's the general flow of execution leading up to this point? What's the system doing? What are the high-level goals of the code? Is this a critical security function, or just some routine initialization? Understanding the preceding lines will instantly inform my mental model of what `rsi_hal_load_key` *should* be doing. I'm thinking about the inputs – what data is being passed in? Keys, certificates, some other form of authorization data? And the output... what's the expected result? Successful key load, error codes? Is there any logging being used? Understanding these things would make it easier to debug. Let's see... |
| 30/3 | 2026/08/31 20:45 | tool | read-file |
0mArgs:{
"File": "drivers/net/wireless/rsi/rsi_91x_mgmt.c",
"FirstLine": 780,
"LineCount": 45
}Results: {
"Contents": " 780:\t/**\n 781:\t * rsi_hal_load_key() - This function is used to load keys within the firmware.\n 782:\t * @common: Pointer to the driver private structure.\n 783:\t * @data: Pointer to the key data.\n 784:\t * @key_len: Key length to be loaded.\n 785:\t * @key_type: Type of key: GROUP/PAIRWISE.\n 786:\t * @key_id: Key index.\n 787:\t * @cipher: Type of cipher used.\n 788:\t * @sta_id: Station id.\n 789:\t * @vif: Pointer to the ieee80211_vif structure.\n 790:\t *\n 791:\t * Return: 0 on success, -1 on failure.\n 792:\t */\n 793:\tint rsi_hal_load_key(struct rsi_common *common,\n 794:\t\t\t u8 *data,\n 795:\t\t\t u16 key_len,\n 796:\t\t\t u8 key_type,\n 797:\t\t\t u8 key_id,\n 798:\t\t\t u32 cipher,\n 799:\t\t\t s16 sta_id,\n 800:\t\t\t struct ieee80211_vif *vif)\n 801:\t{\n 802:\t\tstruct sk_buff *skb = NULL;\n 803:\t\tstruct rsi_set_key *set_key;\n 804:\t\tu16 key_descriptor = 0;\n 805:\t\tu16 frame_len = sizeof(struct rsi_set_key);\n 806:\t\n 807:\t\trsi_dbg(MGMT_TX_ZONE, \"%s: Sending load key frame\\n\", __func__);\n 808:\t\n 809:\t\tskb = dev_alloc_skb(frame_len);\n 810:\t\tif (!skb) {\n 811:\t\t\trsi_dbg(ERR_ZONE, \"%s: Failed in allocation of skb\\n\",\n 812:\t\t\t\t__func__);\n 813:\t\t\treturn -ENOMEM;\n 814:\t\t}\n 815:\t\n 816:\t\tmemset(skb-\u003edata, 0, frame_len);\n 817:\t\tset_key = (struct rsi_set_key *)skb-\u003edata;\n 818:\t\n 819:\t\tif (key_type == RSI_GROUP_KEY) {\n 820:\t\t\tkey_descriptor = RSI_KEY_TYPE_BROADCAST;\n 821:\t\t\tif (vif-\u003etype == NL80211_IFTYPE_AP)\n 822:\t\t\t\tkey_descriptor |= RSI_KEY_MODE_AP;\n 823:\t\t}\n 824:\t\tif ((cipher == WLAN_CIPHER_SUITE_WEP40) ||\n"
} |
| 31/3 | 2026/08/31 20:45 | llm | kmsan-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 4567 output: 242 thoughts: 1034 Thoughts: **Analysis of the Wireless Driver Key Loading Patch** Okay, let's break this down. My initial assessment of this patch, specifically in the context of `rsi_hal_load_key`, is that it addresses a clear out-of-bounds read vulnerability. Here's what I see: The code, before the patch, copies the temporal key and, crucially, the MIC keys from the `data` buffer. The problem is, when the cipher isn't TKIP (think CCMP, AES, etc.), the `key_len` can be as small as 16 bytes. However, the code would still attempt to read the TX and RX MIC keys from `&data[16]` and `&data[24]`, respectively. This is a classic buffer over-read, and something KASAN (Kernel Address SANitizer) is designed to catch, and did catch. We are reading beyond the allocated boundary of `data`. This patch solves this by *only* copying the MIC keys when the `cipher` is specifically `WLAN_CIPHER_SUITE_TKIP`, where the key data is expected to be 32 bytes (16-byte temporal key + 8-byte TX MIC + 8-byte RX MIC). In all other cases, it avoids accessing these out-of-bounds regions of `data`. Now, the important part: is this a KMSAN (Kernel Memory SANitizer) issue? No, and here's why. The `skb->data` buffer, which is where this data ends up, is explicitly zeroed out with `memset(skb->data, 0, frame_len)` at the beginning of the function. This means there's no question of uninitialized memory being used, leaked, or copied to user space. KMSAN is for detecting and preventing the use of uninitialized memory, which is *not* what's happening here. The previous code *did* have an out-of-bounds read, detected by KASAN. Let's double-check all aspects: 1. This patch doesn't introduce or modify kernel structures sent to user space. It sends a management frame internally to the wireless card or firmware via `rsi_send_internal_mgmt_frame`. 2. It doesn't touch uninitialized memory or expose uninitialized data. The `skb->data` is explicitly zeroed. 3. The previous bug was an out-of-bounds read. This patch prevents that. KASAN caught the bug in the first place, and this patch correctly fixes it. 4. KMSAN is for uninitialized memory reads. This patch is an out-of-bounds access fix. So, in summary, we're fixing an out-of-bounds read vulnerability and it's a KASAN issue, and there's no KMSAN concern. The key aspect here is the clear distinction between an out-of-bounds read, and an uninitialized memory read. Let's summarize this clearly: * The patch *restricts* the MIC key copies only to when `cipher` is `WLAN_CIPHER_SUITE_TKIP`. The previous code did an out-of-bounds read on `data` for other ciphers. * KASAN detects out-of-bounds reads which is the bug and is fixed here. * The `skb->data` buffer is zeroed, and nothing uninitialized is leaked, used or read. * Therefore, NeedsKMSAN = `false`. Now, to set the results. |
| 32/3 | 2026/08/31 20:46 | tool | set-results |
0mArgs:{
"KMSANReasoning": "The patch fixes an out-of-bounds read bug in rsi_hal_load_key() where 8-byte TX and RX MIC keys were unconditionally read from \u0026data[16] and \u0026data[24], even when the cipher suite was not TKIP (such as CCMP/AES where the key buffer is only 16 bytes long).\n\n1. KASAN applicability: Out-of-bounds reads on heap or stack buffers (such as accessing past the 16-byte key buffer) are directly detectable by KASAN.\n2. KMSAN applicability: The frame buffer in the skb is fully zero-initialized upfront via `memset(skb-\u003edata, 0, frame_len)`. No uninitialized memory is read, copied to user space, or used in control flow.\n\nSince the issue is strictly an out-of-bounds memory access caught by KASAN and there are no uninitialized memory risks or info-leaks, a dedicated KMSAN fuzzing session is not needed.",
"NeedsKMSAN": false
}Results: {
"KMSANReasoning": "The patch fixes an out-of-bounds read bug in rsi_hal_load_key() where 8-byte TX and RX MIC keys were unconditionally read from \u0026data[16] and \u0026data[24], even when the cipher suite was not TKIP (such as CCMP/AES where the key buffer is only 16 bytes long).\n\n1. KASAN applicability: Out-of-bounds reads on heap or stack buffers (such as accessing past the 16-byte key buffer) are directly detectable by KASAN.\n2. KMSAN applicability: The frame buffer in the skb is fully zero-initialized upfront via `memset(skb-\u003edata, 0, frame_len)`. No uninitialized memory is read, copied to user space, or used in control flow.\n\nSince the issue is strictly an out-of-bounds memory access caught by KASAN and there are no uninitialized memory risks or info-leaks, a dedicated KMSAN fuzzing session is not needed.",
"NeedsKMSAN": false
} |
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| Total Calls | Total Duration (Seconds) | Avg Duration (Seconds) |
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