WARNING in __cfg80211_ibss_joined

Status: upstream: reported C repro on 2023/03/08 19:50
Bug presence: origin:upstream
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+bc4633dace1e9260de4a@syzkaller.appspotmail.com
First crash: 1325d, last: 5d10h
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2026/01/09 upstream (ToT) 623fb9912f6a C [report] WARNING in __cfg80211_ibss_joined
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __cfg80211_ibss_joined wireless -1 8 2424d 2444d 0/29 auto-closed as invalid on 2020/07/02 02:22
linux-6.6 WARNING in __cfg80211_ibss_joined -1 syz 198 13d 491d 0/2 upstream: reported syz repro on 2025/06/19 03:38
linux-4.14 WARNING in __cfg80211_ibss_joined -1 syz, C 12 1342d 2220d 0/1 upstream: reported C repro on 2020/09/24 13:20
linux-6.1 WARNING in __cfg80211_ibss_joined origin:upstream missing-backport -1 syz, C inconclusive 522 1d12h 1315d 0/3 upstream: reported C repro on 2023/03/18 13:26
upstream WARNING in __cfg80211_ibss_joined (2) prio:high wireless -1 syz, C error 6991 45d 2220d 26/29 upstream: reported C repro on 2020/09/24 09:26
linux-4.19 WARNING in __cfg80211_ibss_joined -1 syz, C 236 1334d 2182d 0/1 upstream: reported C repro on 2020/11/01 17:19
▶ ▼ Last patch testing requests (9)
Created Duration User Patch Repo Result
2026/01/09 02:14 27m retest repro linux-5.15.y no crash log
2026/01/09 02:14 17m retest repro linux-5.15.y no crash log
2026/01/09 02:14 20m retest repro linux-5.15.y no crash log
2026/01/09 02:14 19m retest repro linux-5.15.y no crash log
2026/01/09 02:14 11m retest repro linux-5.15.y report log
2025/09/25 20:20 14m retest repro linux-5.15.y no crash log
2025/08/17 15:00 14m retest repro linux-5.15.y report log
2025/08/17 15:00 10m retest repro linux-5.15.y report log
2025/08/17 15:00 14m retest repro linux-5.15.y report log
▶ ▼ Fix bisection attempts (4)
Created Duration User Patch Repo Result
2024/09/24 19:12 3h27m bisect fix linux-5.15.y OK (0) job log log
2024/06/26 10:05 4h26m fix candidate upstream OK (0) job log log
2023/10/29 09:25 0m bisect fix linux-5.15.y error job log
2023/06/26 16:14 42m bisect fix linux-5.15.y OK (0) job log log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 144 at net/wireless/ibss.c:37 __cfg80211_ibss_joined+0x419/0x4a0 net/wireless/ibss.c:37
Modules linked in:
CPU: 0 PID: 144 Comm: kworker/u4:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: cfg80211 cfg80211_event_work
RIP: 0010:__cfg80211_ibss_joined+0x419/0x4a0 net/wireless/ibss.c:37
Code: 04 25 28 00 00 00 48 3b 44 24 60 75 57 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c0 35 3e f8 0f 0b eb bf e8 b7 35 3e f8 <0f> 0b eb b6 e8 ae 35 3e f8 0f 0b e9 82 fd ff ff e8 a2 35 3e f8 0f
RSP: 0018:ffffc9000176fac0 EFLAGS: 00010293
RAX: ffffffff893aeda9 RBX: 1ffff920002edf5c RCX: ffff88801b1e1dc0
RDX: 0000000000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4c00
RBP: ffffc9000176fb70 R08: ffffffff9101512f R09: 1ffffffff2202a25
R10: dffffc0000000000 R11: fffffbfff2202a26 R12: ffff888074f935b0
R13: dffffc0000000000 R14: 000000000000000b R15: ffff88807d77cc90
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000180 CR3: 000000002b37c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 cfg80211_process_wdev_events+0x373/0x490 net/wireless/util.c:998
 cfg80211_process_rdev_events+0x9d/0x110 net/wireless/util.c:1024
 cfg80211_event_work+0x2b/0x40 net/wireless/core.c:330
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

Crashes (340):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/11 13:38 linux-5.15.y a051a4bf909f 4f92358f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __cfg80211_ibss_joined
2026/10/11 12:31 linux-5.15.y a051a4bf909f 4f92358f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __cfg80211_ibss_joined
2024/12/07 06:22 linux-5.15.y 0a51d2d4527b 9ac0fdc6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __cfg80211_ibss_joined
2024/02/23 23:35 linux-5.15.y 458ce51d0356 8d446f15 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __cfg80211_ibss_joined
2023/04/01 07:23 linux-5.15.y c957cbb87315 f325deb0 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __cfg80211_ibss_joined
2023/04/01 03:32 linux-5.15.y c957cbb87315 f325deb0 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __cfg80211_ibss_joined
2023/03/19 09:39 linux-5.15.y 8020ae3c051d 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __cfg80211_ibss_joined
2023/03/18 13:33 linux-5.15.y 8020ae3c051d 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __cfg80211_ibss_joined
2023/05/07 19:30 linux-5.15.y 8a7f2a5c5aa1 90c93c40 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __cfg80211_ibss_joined
2026/10/18 09:48 linux-5.15.y 792fbe1537d8 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/10/14 16:53 linux-5.15.y a051a4bf909f 1a71827b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/10/10 02:07 linux-5.15.y a051a4bf909f 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/10/04 11:31 linux-5.15.y a051a4bf909f 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/10/01 23:21 linux-5.15.y 0248c33e835e f5cdae2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/30 21:54 linux-5.15.y 0248c33e835e 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/30 20:43 linux-5.15.y 0248c33e835e 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/28 07:44 linux-5.15.y 0248c33e835e a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/27 03:21 linux-5.15.y 0248c33e835e a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/26 05:12 linux-5.15.y 0248c33e835e a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/25 05:19 linux-5.15.y 0248c33e835e f281d9d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/19 15:44 linux-5.15.y 0248c33e835e 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/19 06:16 linux-5.15.y 0248c33e835e 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/13 15:30 linux-5.15.y 0996e0926f6b 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/11 20:22 linux-5.15.y 0996e0926f6b b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/11 15:42 linux-5.15.y 0996e0926f6b b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/10 17:01 linux-5.15.y 0996e0926f6b 1fe56c0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/09 21:15 linux-5.15.y 0996e0926f6b 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/09 10:31 linux-5.15.y 0996e0926f6b 8387c273 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/08 09:53 linux-5.15.y 0996e0926f6b 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/07 14:35 linux-5.15.y 0996e0926f6b 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/09/02 15:29 linux-5.15.y 0996e0926f6b 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/30 15:23 linux-5.15.y 28c35638ec51 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/27 23:46 linux-5.15.y 4a1eaf96ee5c 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/27 20:25 linux-5.15.y 4a1eaf96ee5c 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/27 07:17 linux-5.15.y 945fa863f02c a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/27 03:27 linux-5.15.y 945fa863f02c a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/26 04:04 linux-5.15.y 945fa863f02c 6a91adb4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/25 16:55 linux-5.15.y 945fa863f02c a9a1fc32 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/25 14:16 linux-5.15.y 945fa863f02c a9a1fc32 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/24 11:23 linux-5.15.y 945fa863f02c b55bd4c3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/24 06:57 linux-5.15.y 945fa863f02c 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/23 14:47 linux-5.15.y 945fa863f02c 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/19 22:04 linux-5.15.y 0eb903b5b519 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/19 19:18 linux-5.15.y 0eb903b5b519 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/14 12:08 linux-5.15.y aabd761612db 6f9b3e89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/12 17:26 linux-5.15.y aabd761612db f8d35649 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/11 13:59 linux-5.15.y aabd761612db 71790083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/08 09:32 linux-5.15.y aabd761612db 5d63f80b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/08 06:24 linux-5.15.y aabd761612db 5d63f80b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/07 16:21 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/07 13:09 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/07 10:49 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/07 08:52 linux-5.15.y aabd761612db c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/05 22:25 linux-5.15.y 6e2fd6534337 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/05 00:36 linux-5.15.y 6e2fd6534337 d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/08/03 19:05 linux-5.15.y 6e2fd6534337 6b7c9f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/07/30 08:45 linux-5.15.y 674f684f7c61 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/07/29 15:45 linux-5.15.y 674f684f7c61 6ef5c1e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2026/05/05 13:08 linux-5.15.y ef251c45f1cd 06e69a27 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __cfg80211_ibss_joined
2024/09/27 05:13 linux-5.15.y 3a5928702e71 9314348a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in __cfg80211_ibss_joined
2023/05/22 13:07 linux-5.15.y 9d6bde853685 4bce1a3e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __cfg80211_ibss_joined
2023/05/22 09:41 linux-5.15.y 9d6bde853685 4bce1a3e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __cfg80211_ibss_joined
2023/04/30 17:33 linux-5.15.y f48aeeaaa64c 62df2017 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __cfg80211_ibss_joined
2023/03/18 11:10 linux-5.15.y 8020ae3c051d 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __cfg80211_ibss_joined
2023/03/08 23:41 linux-5.15.y d9b4a0c83a2d 4fc6d98d .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __cfg80211_ibss_joined
2025/02/26 09:04 linux-5.15.y c16c81c81336 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __cfg80211_ibss_joined
2023/03/08 19:49 linux-5.15.y d9b4a0c83a2d 4fc6d98d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __cfg80211_ibss_joined
* Struck through repros no longer work on HEAD.