INFO: task hung in hci_conn

INFO: task hung in hci_conn_failed (2)

Status: auto-obsoleted due to no activity on 2024/09/20 22:07
Subsystems: bluetooth
[Documentation on labels]
First crash: 643d, last: 643d

▶ ▼ Similar bugs (3)

Kernel	Title	Rank 🛈	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in hci_conn_failed (4) bluetooth	1	syz		17	112d	289d	0/29	auto-obsoleted due to no activity on 2026/03/15 09:58
upstream	INFO: task hung in hci_conn_failed (3) bluetooth	1			18	476d	548d	0/29	auto-obsoleted due to no activity on 2025/02/02 22:40
upstream	INFO: task hung in hci_conn_failed bluetooth	1	C	done	1	746d	790d	0/29	auto-obsoleted due to no activity on 2024/06/19 08:54

Sample crash report:

INFO: task kworker/u9:4:5110 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc4-syzkaller-00217-g35bb670d65fc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u9:4    state:D
 stack:18232 pid:5110  tgid:5110  ppid:2      flags:0x00004000
Workqueue: hci0 hci_cmd_sync_work

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 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
 hci_connect_cfm include/net/bluetooth/hci_core.h:1967 [inline]
 hci_conn_failed+0x185/0x340 net/bluetooth/hci_conn.c:1257
 hci_abort_conn_sync+0x583/0xde0 net/bluetooth/hci_sync.c:5450
 hci_cmd_sync_work+0x22b/0x400 net/bluetooth/hci_sync.c:310
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/06/22 21:58	upstream	35bb670d65fc	edc5149a	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-smack-root	INFO: task hung in hci_conn_failed

* ~~Struck through~~ repros no longer work on HEAD.