syzbot


INFO: task hung in wiphy_register (2)

Status: upstream: reported syz repro on 2025/07/29 08:36
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+e79f3349c93df8969402@syzkaller.appspotmail.com
First crash: 178d, last: 29d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [wireless?] INFO: task hung in wiphy_register (2) 0 (1) 2025/07/29 08:36
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in wiphy_register wireless 1 1 648d 648d 0/29 auto-obsoleted due to no activity on 2024/07/10 10:09
Last patch testing requests (4)
Created Duration User Patch Repo Result
2026/01/03 17:18 17m retest repro upstream report log
2026/01/03 17:18 17m retest repro upstream report log
2025/10/17 09:43 19m retest repro upstream report log
2025/08/08 08:41 19m retest repro upstream report log

Sample crash report:
INFO: task syz-executor:5485 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21304 pid:5485  tgid:5485  ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x14bc/0x5000 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6960
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
 __mutex_lock_common kernel/locking/mutex.c:692 [inline]
 __mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
 wiphy_register+0x1d15/0x2d20 net/wireless/core.c:1033
 ieee80211_register_hw+0x34a7/0x4110 net/mac80211/main.c:1590

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/12/20 16:52 upstream dd9b004b7ff3 d1b870e1 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root INFO: task hung in wiphy_register
2025/07/25 08:33 upstream 94ce1ac2c9b4 fb8f743d .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root INFO: task hung in wiphy_register
* Struck through repros no longer work on HEAD.