syzbot


INFO: task hung in regdb_fw_cb

Status: fixed on 2024/07/09 19:14
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+9d8f809bfaab2e794297@syzkaller.appspotmail.com
Fix commit: d864319871b0 net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc()
First crash: 145d, last: 91d
Discussions (2)
Title Replies (including bot) Last reply
[syzbot] [wireless?] INFO: task hung in regdb_fw_cb 1 (2) 2024/06/20 13:41
[syzbot] Monthly wireless report (Jun 2024) 0 (1) 2024/06/10 12:42
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 INFO: task hung in regdb_fw_cb (2) 1 3h07m 3h06m 0/3 upstream: reported on 2024/10/04 03:29
linux-6.1 INFO: task hung in regdb_fw_cb 17 101d 135d 0/3 auto-obsoleted due to no activity on 2024/09/03 05:40
linux-5.15 INFO: task hung in regdb_fw_cb 23 91d 135d 0/3 auto-obsoleted due to no activity on 2024/09/12 09:41

Sample crash report:
INFO: task kworker/0:2:925 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2     state:D stack:23440 pid:925   tgid:925   ppid:2      flags:0x00004000
Workqueue: events request_firmware_work_func
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 regdb_fw_cb+0x82/0x1c0 net/wireless/reg.c:1017
 request_firmware_work_func+0x1a6/0x280 drivers/base/firmware_loader/main.c:1167
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task kworker/u8:8:2843 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:8    state:D stack:24120 pid:2843  tgid:2843  ppid:2      flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147

Crashes (596):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/20 22:09 upstream 2ccbdf43d5e7 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in regdb_fw_cb
2024/06/19 12:48 upstream 2ccbdf43d5e7 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in regdb_fw_cb
2024/06/19 08:27 upstream 2ccbdf43d5e7 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in regdb_fw_cb
2024/06/19 03:09 upstream 2ccbdf43d5e7 639d6cdf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in regdb_fw_cb
2024/05/22 10:01 upstream 8f6a15f095a6 1014eca7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in regdb_fw_cb
2024/05/20 16:47 upstream eb6a9339efeb c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in regdb_fw_cb
2024/06/22 07:31 upstream 4545981f33be edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in regdb_fw_cb
2024/06/20 09:21 net be27b8965297 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/18 08:39 net be27b8965297 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/17 17:47 net be27b8965297 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/17 15:37 net be27b8965297 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/17 12:08 net be27b8965297 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/16 14:36 net be27b8965297 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/16 12:17 net be27b8965297 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/16 10:09 net be27b8965297 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/16 09:14 net be27b8965297 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/16 05:53 net be27b8965297 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/16 03:54 net be27b8965297 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in regdb_fw_cb
2024/07/05 06:18 net-next 390b14b5e9f6 dc6bbff0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/07/04 23:06 net-next aa77b1128016 dc6bbff0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/07/04 20:48 net-next aa77b1128016 dc6bbff0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/20 22:13 net-next 3ec8d7572a69 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/20 21:05 net-next 3ec8d7572a69 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/20 20:03 net-next 3ec8d7572a69 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/20 18:59 net-next 3ec8d7572a69 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/20 15:05 net-next 3ec8d7572a69 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/20 05:40 net-next 3ec8d7572a69 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/20 02:49 net-next 3ec8d7572a69 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/20 02:44 net-next 3ec8d7572a69 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/20 01:41 net-next 3ec8d7572a69 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/20 00:31 net-next 3ec8d7572a69 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/19 16:55 net-next 3ec8d7572a69 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/18 18:04 net-next 3ec8d7572a69 639d6cdf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/18 07:14 net-next 3ec8d7572a69 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/18 06:03 net-next 3ec8d7572a69 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/18 05:07 net-next 3ec8d7572a69 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/18 03:32 net-next 3ec8d7572a69 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/18 02:09 net-next 3ec8d7572a69 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/18 01:25 net-next 3ec8d7572a69 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/17 22:34 net-next 3ec8d7572a69 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/17 14:25 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/17 12:37 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/17 10:23 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/17 01:43 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/17 00:05 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/16 22:39 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/16 17:24 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/16 16:22 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/16 13:31 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/15 19:19 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/15 18:19 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/05/12 01:04 net-next cddd2dc6390b 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in regdb_fw_cb
2024/06/16 21:15 linux-next a957267fa7e9 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in regdb_fw_cb
* Struck through repros no longer work on HEAD.