INFO: task hung in crda_timeout_work (8)

Status: upstream: reported C repro on 2024/09/27 16:53
Subsystems: wireless
Labels: prio:high
[Documentation on labels]
Reported-by: syzbot+d41f74db64598e0b5016@syzkaller.appspotmail.com
First crash: 781d, last: 2h10m
Cause bisection: introduced by (bisect log) :
commit 5f6bd380c7bdbe10f7b4e8ddcceed60ce0714c6d
Author: Peter Zijlstra <peterz@infradead.org>
Date: Mon May 27 12:06:55 2024 +0000

  sched/rt: Remove default bandwidth control

Crash: INFO: task hung in corrupted (log)
Repro: C syz .config
  
Fix bisection: failed (error log, bisect log)
  
▶ ▼ ✨ AI Jobs (2)
ID Workflow Result Correct Bug Created Started Finished Revision
6aedf4d2 assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ✅ UserNamespace: ✅ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ INFO: task hung in crda_timeout_work (8) 2026/05/31 09:32 2026/05/31 09:32 2026/05/31 11:08 6b4a8443
5b39885e assessment-security 💥 INFO: task hung in crda_timeout_work (8) 2026/05/14 16:03 2026/05/14 16:03 2026/05/14 16:04 6ccb967e
▶ ▼ Discussions (16)
Title Replies (including bot) Last reply
[syzbot] Monthly wireless report (Aug 2026) 0 (1) 2026/08/04 12:32
[syzbot] Monthly wireless report (Jun 2026) 0 (1) 2026/06/02 20:32
[syzbot] Monthly wireless report (May 2026) 0 (1) 2026/05/02 12:32
[syzbot] Monthly wireless report (Sep 2025) 0 (1) 2025/09/25 16:01
[syzbot] Monthly wireless report (Aug 2025) 0 (1) 2025/08/25 13:19
[syzbot] Monthly wireless report (Jul 2025) 0 (1) 2025/07/25 12:39
[syzbot] Monthly wireless report (Jun 2025) 0 (1) 2025/06/24 07:38
[syzbot] Monthly wireless report (May 2025) 0 (1) 2025/05/24 10:04
[syzbot] Monthly wireless report (Apr 2025) 0 (1) 2025/04/22 12:41
[syzbot] Monthly wireless report (Mar 2025) 0 (1) 2025/03/18 14:49
[syzbot] Monthly wireless report (Feb 2025) 0 (1) 2025/02/16 21:53
[syzbot] Monthly wireless report (Jan 2025) 0 (1) 2025/01/15 13:48
[syzbot] Monthly wireless report (Dec 2024) 0 (1) 2024/12/16 09:44
[syzbot] Monthly wireless report (Nov 2024) 0 (1) 2024/11/14 08:58
[syzbot] Monthly wireless report (Oct 2024) 0 (1) 2024/10/14 07:15
[syzbot] [wireless?] INFO: task hung in crda_timeout_work (8) 0 (1) 2024/09/27 16:53
▶ ▼ Similar bugs (26)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.6 INFO: task hung in crda_timeout_work 1 2 159d 257d 0/2 auto-obsoleted due to no activity on 2026/07/04 01:25
linux-6.6 INFO: task hung in crda_timeout_work (2) 1 2 36d 36d 0/2 upstream: reported on 2026/07/27 20:18
upstream INFO: task hung in crda_timeout_work net 1 1 2906d 2905d 0/29 auto-closed as invalid on 2019/03/16 12:56
linux-6.1 INFO: task hung in crda_timeout_work (2) 1 1 679d 679d 0/3 auto-obsoleted due to no activity on 2025/01/30 06:51
upstream INFO: task hung in crda_timeout_work (2) net 1 1 2719d 2719d 0/29 auto-closed as invalid on 2019/09/19 06:28
upstream INFO: task hung in crda_timeout_work (7) wireless 1 1084 786d 829d 26/29 fixed on 2024/07/09 19:14
upstream INFO: task hung in crda_timeout_work (6) wireless 1 1 1525d 1525d 0/29 auto-closed as invalid on 2022/09/27 01:38
android-44 INFO: task hung in crda_timeout_work 1 1 3071d 3071d 0/2 auto-closed as invalid on 2019/02/22 14:39
upstream INFO: task hung in crda_timeout_work (3) wireless 1 8 2154d 2246d 0/29 auto-closed as invalid on 2021/01/06 02:49
upstream INFO: task hung in crda_timeout_work (5) wireless 1 1 1818d 1818d 0/29 auto-closed as invalid on 2021/12/07 21:47
linux-6.1 INFO: task hung in crda_timeout_work 1 49 751d 834d 0/3 auto-obsoleted due to no activity on 2024/10/20 15:08
linux-5.15 INFO: task hung in crda_timeout_work 1 41 657d 833d 0/3 auto-obsoleted due to no activity on 2025/01/22 17:11
upstream INFO: task hung in crda_timeout_work (4) wireless 1 1 2035d 2035d 0/29 auto-closed as invalid on 2021/05/17 11:47
linux-5.15 INFO: rcu detected stall in worker_thread 1 1 1068d 1068d 0/3 auto-obsoleted due to no activity on 2024/01/09 18:17
upstream INFO: rcu detected stall in worker_thread (8) kernel 1 1 1211d 1211d 0/29 auto-obsoleted due to no activity on 2023/08/07 05:14
upstream INFO: rcu detected stall in worker_thread (5) kernel 1 2 1552d 1589d 0/29 auto-closed as invalid on 2022/08/31 00:50
android-6-12 INFO: rcu detected stall in worker_thread 1 1 325d 325d 0/1 auto-obsoleted due to no activity on 2026/01/09 16:24
upstream INFO: rcu detected stall in worker_thread (9) prio:low netfilter 1 syz, C done 5882 4h41m 1060d 0/29 upstream: reported C repro on 2023/10/07 18:33
linux-6.1 INFO: rcu detected stall in worker_thread 1 6 804d 834d 0/3 auto-obsoleted due to no activity on 2024/09/27 16:46
linux-6.6 INFO: rcu detected stall in worker_thread origin:lts-only 1 syz, C done 334 2d21h 440d 0/2 upstream: reported C repro on 2025/06/18 07:15
upstream INFO: rcu detected stall in worker_thread (6) kernel 1 1 1428d 1428d 0/29 auto-obsoleted due to no activity on 2023/01/12 15:50
linux-6.1 INFO: rcu detected stall in worker_thread (3) 1 2 15d 43d 0/3 upstream: reported on 2026/07/20 15:45
linux-5.15 INFO: rcu detected stall in worker_thread (2) 1 4 807d 812d 0/3 auto-obsoleted due to no activity on 2024/09/24 04:34
upstream INFO: rcu detected stall in worker_thread (7) kernel 1 1 1321d 1321d 0/29 auto-obsoleted due to no activity on 2023/04/27 16:37
linux-6.1 INFO: rcu detected stall in worker_thread (2) 1 1 588d 588d 0/3 auto-obsoleted due to no activity on 2025/05/01 18:18
android-5-15 BUG: soft lockup in worker_thread origin:lts 1 syz, C done 1 736d 736d 0/2 auto-obsoleted due to no activity on 2024/12/04 04:19
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/08/01 10:30 40m retest repro upstream report log
2026/07/02 23:14 1h08m retest repro net-next log
2026/07/02 05:13 33m retest repro upstream log
2026/07/02 05:13 55m retest repro upstream log
2026/07/01 23:39 42m retest repro net-next log
2026/07/01 23:39 25m retest repro net log
2026/07/01 23:39 31m retest repro upstream log
2026/07/01 23:39 3h52m retest repro upstream log
2026/07/01 23:39 38m retest repro net-next log
2026/06/30 19:40 30m retest repro upstream no crash log
▶ ▼ Fix bisection attempts (2)
Created Duration User Patch Repo Result
2026/03/08 20:13 21m bisect fix upstream error job log
2025/11/18 15:23 6h25m bisect fix upstream OK (0) job log log

Sample crash report:
INFO: task kworker/0:1:10 blocked for more than 142 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1     state:D stack:24096 pid:10    tgid:10    ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events_power_efficient crda_timeout_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7326
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
 crda_timeout_work+0x16/0x80 net/wireless/reg.c:529
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436

Crashes (715):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/10 23:03 upstream a635d6748234 99e64375 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in crda_timeout_work
2025/08/23 01:39 upstream a2e94e80790b bf27483f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in crda_timeout_work
2024/09/26 12:01 upstream aa486552a110 0d19f247 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in crda_timeout_work
2025/05/15 12:56 net 09db7a4d287d d6b2ee52 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/30 15:11 net-next 1b78070aaef6 2f52988a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in crda_timeout_work
2026/08/30 08:50 net-next 1b78070aaef6 2f52988a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in crda_timeout_work
2025/12/29 18:32 net-next 7b8e9264f55a d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in crda_timeout_work
2024/10/08 22:42 net-next 489cee4caeba 402f1df0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in crda_timeout_work
2024/10/12 05:23 upstream 9e4c6c1ad9a1 084d8178 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in crda_timeout_work
2024/10/06 20:22 upstream 8f602276d390 d7906eff .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in crda_timeout_work
2026/09/01 02:38 net-next 1bb784eb6e38 316d9396 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in crda_timeout_work
2024/10/18 07:06 net-next 6d858708d465 666f77ed .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in crda_timeout_work
2026/08/17 13:41 linux-next 4477a78374a5 746171ee .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in crda_timeout_work
2026/09/01 18:59 upstream 786262be6048 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in crda_timeout_work
2026/08/31 13:09 upstream a23cbb05744b 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in crda_timeout_work
2026/08/28 03:18 upstream 18fbf5151d2c e2fa417d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in crda_timeout_work
2026/08/27 07:09 upstream 73e3f0710014 a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in crda_timeout_work
2026/08/26 17:29 upstream 45c13f3f9e3b a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in crda_timeout_work
2026/08/26 02:55 upstream 73ae59e97596 6a91adb4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in crda_timeout_work
2026/08/17 09:39 upstream dcb68831eac7 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in crda_timeout_work
2026/05/04 04:26 upstream f377d0025eb0 a0d91488 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in crda_timeout_work
2026/04/15 10:11 upstream 883af1f8e878 e2e976a8 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto INFO: task hung in crda_timeout_work
2026/03/31 00:02 upstream 7aaa8047eafd 458630d8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in crda_timeout_work
2025/09/02 12:57 upstream b320789d6883 807a3b61 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in crda_timeout_work
2025/01/27 17:08 upstream c2da8b3f914f d99a33ad .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in crda_timeout_work
2024/09/18 03:01 upstream 2f27fce67173 c673ca06 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in crda_timeout_work
2026/05/24 17:05 upstream 4cbfe4502e3d c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in crda_timeout_work
2025/04/18 22:52 upstream fc96b232f8e7 2a20f901 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root INFO: task hung in crda_timeout_work
2026/09/01 17:24 net 545b63503c69 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/09/01 10:35 net 545b63503c69 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/09/01 03:43 net 1376afc7660b 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/09/01 01:33 net 1376afc7660b 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/09/01 00:21 net 1376afc7660b 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/31 22:57 net 1376afc7660b 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/31 21:24 net 1376afc7660b 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/31 18:25 net 1376afc7660b 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/31 11:53 net 4aa61c88b4e2 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/31 03:49 net 4aa61c88b4e2 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/31 01:15 net 4aa61c88b4e2 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/31 00:00 net 4aa61c88b4e2 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/30 18:28 net 2188569e7e1b 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/30 08:39 net 2188569e7e1b 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/30 06:16 net 2188569e7e1b 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/30 02:58 net 2188569e7e1b 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/30 01:43 net 2188569e7e1b 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/29 18:29 net 7e1d6caa9c6b 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/29 15:23 net 7e1d6caa9c6b 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/29 10:23 net 7e1d6caa9c6b 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/29 03:13 net 7e1d6caa9c6b bcbc8ceb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/29 01:09 net 7e1d6caa9c6b bcbc8ceb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/28 15:06 net 1b78070aaef6 bcbc8ceb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/08/28 09:09 net 1b78070aaef6 e2fa417d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in crda_timeout_work
2026/09/01 14:35 net-next 25c1f6111034 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in crda_timeout_work
2026/09/01 12:06 net-next 25c1f6111034 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in crda_timeout_work
2026/09/01 09:19 net-next 25c1f6111034 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in crda_timeout_work
2026/09/01 07:32 net-next 25c1f6111034 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in crda_timeout_work
2026/08/29 23:26 net-next 1b78070aaef6 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in crda_timeout_work
2026/08/28 22:33 net-next 1b78070aaef6 bcbc8ceb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in crda_timeout_work
2026/08/30 22:09 linux-next e30626823a40 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in crda_timeout_work
2026/08/27 11:26 linux-next f82a5da2f049 a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: task hung in crda_timeout_work
2026/08/20 11:38 linux-next 6a746cd265ae 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: task hung in crda_timeout_work
2026/08/18 04:21 linux-next 4477a78374a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: task hung in crda_timeout_work
2026/08/18 03:11 linux-next 4477a78374a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: task hung in crda_timeout_work
2026/08/18 01:44 linux-next 4477a78374a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: task hung in crda_timeout_work
2026/08/17 22:07 linux-next 4477a78374a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: task hung in crda_timeout_work
2026/08/17 16:23 linux-next 4477a78374a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: task hung in crda_timeout_work
2026/08/17 11:18 linux-next 4477a78374a5 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in crda_timeout_work
2026/08/17 09:55 linux-next 4477a78374a5 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in crda_timeout_work
2026/08/13 18:38 linux-next 2697ef8943c9 a9ede23c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in crda_timeout_work
2026/08/13 08:10 linux-next 28d012efb432 67796a05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in crda_timeout_work
2026/08/12 11:40 linux-next 5e6de6a2b522 f8d35649 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in crda_timeout_work
* Struck through repros no longer work on HEAD.