syzbot

 sign-in | mailing list | source | docs
🐞 Open [1497]
≡ Subsystems
🐞 Fixed [6605]
🐞 Invalid [16905]
⬇ Missing Backports [207]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
Total Repo Heatmap Subsystems Heatmap
💬 Send us feedback

WARNING in ieee80211_prep_channel

Status: upstream: reported C repro on 2025/01/30 08:34
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+c90039fcfb40175abe28@syzkaller.appspotmail.com
First crash: 242d, last: 33d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [wireless?] WARNING in ieee80211_prep_channel 0 (3) 2025/03/24 18:20
▶ ▼ Last patch testing requests (3)
Created Duration User Patch Repo Result
2025/07/10 22:52 20m retest repro upstream OK log
2025/04/07 20:02 16m retest repro upstream report log
2025/03/12 03:58 21m retest repro upstream OK log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5348 at net/mac80211/mlme.c:1120 ieee80211_determine_chan_mode net/mac80211/mlme.c:1120 [inline]
WARNING: CPU: 0 PID: 5348 at net/mac80211/mlme.c:1120 ieee80211_prep_channel+0x479f/0x5ee0 net/mac80211/mlme.c:6042
Modules linked in:
CPU: 0 UID: 0 PID: 5348 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events cfg80211_conn_work
RIP: 0010:ieee80211_determine_chan_mode net/mac80211/mlme.c:1120 [inline]
RIP: 0010:ieee80211_prep_channel+0x479f/0x5ee0 net/mac80211/mlme.c:6042
Code: 03 42 80 3c 20 00 74 08 48 89 df e8 4b 02 1a f7 48 83 3b 00 0f 84 79 04 00 00 e8 9c 17 b5 f6 e9 7e 01 00 00 e8 92 17 b5 f6 90 <0f> 0b 90 4c 8b 74 24 70 4c 89 f7 e8 d1 00 0f f7 49 c7 c6 ea ff ff
RSP: 0018:ffffc9000d21eb40 EFLAGS: 00010293
RAX: ffffffff8b0aa39e RBX: 0000000000000000 RCX: ffff888000892440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d21ef00 R08: ffff888000892440 R09: 000000000000000e
R10: 000000000000000d R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff1100a5deceb R14: ffffc9000d21edf0 R15: ffff888052ef6758
FS:  0000000000000000(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ad310e4660 CR3: 0000000051660000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ieee80211_prep_connection+0xdd9/0x13f0 net/mac80211/mlme.c:8977
 ieee80211_mgd_auth+0xee3/0x1770 net/mac80211/mlme.c:9267
 rdev_auth net/wireless/rdev-ops.h:486 [inline]
 cfg80211_mlme_auth+0x62f/0x9c0 net/wireless/mlme.c:291
 cfg80211_conn_do_work+0x501/0xd10 net/wireless/sme.c:182
 cfg80211_conn_work+0x2c0/0x460 net/wireless/sme.c:272
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Crashes (38):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/23 00:24 upstream cf6fc5eefc5b bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/08/22 12:44 upstream 3957a5720157 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/08/10 08:10 upstream 561c80369df0 32a0e5ed .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/07/27 21:11 upstream ec2df4364666 fb8f743d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/06/26 22:37 upstream ee88bddf7f2f 1ae8177e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/06/16 06:18 upstream 08215f5486ec 5f4b362d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/06/16 04:47 upstream 08215f5486ec 5f4b362d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/06/12 13:20 upstream 2c4a1f3fe03e 98683f8f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/06/03 10:16 upstream 7f9039c524a3 a30356b7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/05/29 01:34 upstream feacb1774bd5 3d2f584d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/05/28 23:42 upstream feacb1774bd5 3d2f584d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/05/28 14:12 upstream c89756bcf406 874a1386 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/05/26 06:16 upstream d0c22de9995b 2d4582d0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/05/20 16:03 upstream a5806cd506af b47f9e02 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/05/18 06:43 upstream 205b2bd7939c f41472b0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/05/17 09:46 upstream 172a9d94339c f41472b0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/05/02 20:04 upstream ebd297a2affa d7f099d1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/04/28 13:11 upstream b4432656b36e c6b4fb39 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/04/26 03:18 upstream c3137514f1f1 c6b4fb39 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/04/22 15:45 upstream a33b5a08cbbd 53a8b9bd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/04/21 19:25 upstream 9d7a0577c9db 2a20f901 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/04/17 04:58 upstream c62f4b82d571 a95239b1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/04/09 14:11 upstream a24588245776 47d015b1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/03/24 18:20 upstream 38fec10eb60d 875573af .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/03/24 17:18 upstream 38fec10eb60d 875573af .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/03/15 23:01 upstream 3571e8b091f4 e2826670 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/03/14 07:33 upstream 4003c9e78778 e2826670 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/02/26 03:40 upstream 2a1944bff549 d34966d1 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/02/26 01:16 upstream 2a1944bff549 d34966d1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/02/24 21:39 upstream d082ecbc71e9 d34966d1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/02/21 10:27 upstream 334426094588 0808a665 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/02/15 03:24 upstream 04f41cbf03ec 40a34ec9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/02/10 02:55 upstream 69b54314c975 ef44b750 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/02/09 06:18 upstream 9946eaf552b1 ef44b750 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/01/28 06:11 upstream 805ba04cb7cc 18070896 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/01/26 08:28 upstream 405057718a1f 9fbd772e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in ieee80211_prep_channel
2025/04/25 11:22 net-next 5565acd1e6c4 e3715315 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ieee80211_prep_channel
2025/04/25 11:21 net-next 5565acd1e6c4 e3715315 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ieee80211_prep_channel
* Struck through repros no longer work on HEAD.