syzbot


INFO: task hung in regdb_fw_cb

Status: upstream: reported on 2024/05/22 05:21
Reported-by: syzbot+81ccc06a70948ff86e3f@syzkaller.appspotmail.com
First crash: 25d, last: 3d23h
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in regdb_fw_cb wireless 460 19m 22d 0/27 upstream: reported on 2024/05/25 11:48
linux-6.1 INFO: task hung in regdb_fw_cb 14 3d00h 26d 0/3 upstream: reported on 2024/05/21 10:49

Sample crash report:
INFO: task kworker/1:0:21 blocked for more than 143 seconds.
      Not tainted 5.15.160-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0     state:D stack:24632 pid:   21 ppid:     2 flags:0x00004000
Workqueue: events request_firmware_work_func
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
 schedule+0x11b/0x1f0 kernel/sched/core.c:6459
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518
 __mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 regdb_fw_cb+0x7e/0x1b0 net/wireless/reg.c:1052
 request_firmware_work_func+0x199/0x270 drivers/base/firmware_loader/main.c:1099
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
 </TASK>
INFO: task kworker/1:14:4018 blocked for more than 143 seconds.
      Not tainted 5.15.160-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:14    state:D stack:27424 pid: 4018 ppid:     2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376

Crashes (17):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/12 16:03 linux-5.15.y c61bd26ae81a f815599d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/06/12 15:42 linux-5.15.y c61bd26ae81a f815599d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/06/12 14:21 linux-5.15.y c61bd26ae81a f815599d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/06/12 01:36 linux-5.15.y c61bd26ae81a 4d75f4f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/06/11 21:45 linux-5.15.y c61bd26ae81a 4d75f4f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/06/10 16:17 linux-5.15.y c61bd26ae81a 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/06/09 08:34 linux-5.15.y c61bd26ae81a 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/06/09 01:02 linux-5.15.y c61bd26ae81a 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/06/08 14:42 linux-5.15.y c61bd26ae81a 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/06/06 07:26 linux-5.15.y c61bd26ae81a 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/06/05 08:02 linux-5.15.y c61bd26ae81a e1e2c66e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/06/03 22:12 linux-5.15.y c61bd26ae81a a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/06/03 16:59 linux-5.15.y c61bd26ae81a 0aba2352 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/05/28 22:03 linux-5.15.y c61bd26ae81a 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/05/26 23:50 linux-5.15.y c61bd26ae81a a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/05/23 18:31 linux-5.15.y 83655231580b 4c2072ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
2024/05/22 05:21 linux-5.15.y 83655231580b 1014eca7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in regdb_fw_cb
* Struck through repros no longer work on HEAD.