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| Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|
| linux-5.15 | INFO: task hung in hci_remote_features_evt | 3 | 73d | 80d | 0/3 | upstream: reported on 2024/10/30 17:31 | |||
| upstream | INFO: task hung in hci_remote_features_evt bluetooth | 9 | 101d | 197d | 0/28 | auto-obsoleted due to no activity on 2025/01/07 02:12 |
INFO: task kworker/u5:6:4265 blocked for more than 142 seconds.
Not tainted 6.1.119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u5:6 state:D stack:25952 pid:4265 ppid:2 flags:0x00004000
Workqueue: hci14 hci_rx_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
hci_connect_cfm include/net/bluetooth/hci_core.h:1784 [inline]
hci_remote_features_evt+0x615/0xa60 net/bluetooth/hci_event.c:3803
hci_event_func net/bluetooth/hci_event.c:7373 [inline]
hci_event_packet+0xa9d/0x1510 net/bluetooth/hci_event.c:7425
hci_rx_work+0x3cd/0xce0 net/bluetooth/hci_core.c:4085
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
INFO: task kworker/u5:8:4267 blocked for more than 142 seconds.
Not tainted 6.1.119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u5:8 state:D stack:26624 pid:4267 ppid:2 flags:0x00004000
Workqueue: hci13 hci_rx_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
hci_connect_cfm include/net/bluetooth/hci_core.h:1784 [inline]
hci_remote_features_evt+0x615/0xa60 net/bluetooth/hci_event.c:3803
hci_event_func net/bluetooth/hci_event.c:7373 [inline]
hci_event_packet+0xa9d/0x1510 net/bluetooth/hci_event.c:7425
hci_rx_work+0x3cd/0xce0 net/bluetooth/hci_core.c:4085
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
INFO: task kworker/0:9:4789 blocked for more than 147 seconds.
Not tainted 6.1.119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:9 state:D stack:25256 pid:4789 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_verify_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
addrconf_verify_work+0x15/0x30 net/ipv6/addrconf.c:4656
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
Showing all locks held in the system:
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024/11/29 20:57 | linux-6.1.y | e4d90d63d385 | 5df23865 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | INFO: task hung in hci_remote_features_evt |