syzbot |
sign-in | mailing list | source | docs | 🏰 |
| Kernel | Title | Rank 🛈 | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| linux-5.15 | INFO: task hung in hci_conn_hash_flush | 1 | 1 | 618d | 618d | 0/3 | auto-obsoleted due to no activity on 2024/11/29 11:50 | |||
| upstream | INFO: task hung in hci_conn_hash_flush (3) bluetooth | 1 | 1 | 318d | 318d | 0/29 | auto-obsoleted due to no activity on 2025/09/15 15:44 | |||
| upstream | INFO: task hung in hci_conn_hash_flush bluetooth | 1 | 1 | 1784d | 1784d | 0/29 | auto-closed as invalid on 2021/09/10 15:42 |
INFO: task syz-executor:9089 blocked for more than 143 seconds.
Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:24240 pid:9089 tgid:9089 ppid:1 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
hci_disconn_cfm include/net/bluetooth/hci_core.h:2047 [inline]
hci_conn_hash_flush+0xbb/0x260 net/bluetooth/hci_conn.c:2698
hci_dev_close_sync+0x603/0x11a0 net/bluetooth/hci_sync.c:5212
hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483
hci_unregister_dev+0x213/0x620 net/bluetooth/hci_core.c:2698
vhci_release+0x79/0xf0 drivers/bluetooth/hci_vhci.c:664
__fput+0x3f8/0xb60 fs/file_table.c:450
task_work_run+0x14e/0x250 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xadd/0x2d70 kernel/exit.c:938
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
get_signal+0x24ed/0x26c0 kernel/signal.c:3017
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff68e97e9cf
RSP: 002b:00007ffe993dda00 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: 0000000000000001 RBX: 0000000000000005 RCX: 00007ff68e97e9cf
RDX: 0000000000000001 RSI: 00007ffe993dda50 RDI: 0000000000000005
RBP: 00007ff68e9f4ebd R08: 0000000000000000 R09: 00007ffe993dd857
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007ffe993dda50 R14: 00007ff68f674620 R15: 0000000000000003
</TASK>
INFO: task syz-executor:9164 blocked for more than 146 seconds.
Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:24976 pid:9164 tgid:9164 ppid:1 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
hci_disconn_cfm include/net/bluetooth/hci_core.h:2047 [inline]
hci_conn_hash_flush+0xbb/0x260 net/bluetooth/hci_conn.c:2698
hci_dev_close_sync+0x603/0x11a0 net/bluetooth/hci_sync.c:5212
hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483
hci_unregister_dev+0x213/0x620 net/bluetooth/hci_core.c:2698
vhci_release+0x79/0xf0 drivers/bluetooth/hci_vhci.c:664
__fput+0x3f8/0xb60 fs/file_table.c:450
task_work_run+0x14e/0x250 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xadd/0x2d70 kernel/exit.c:938
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
get_signal+0x24ed/0x26c0 kernel/signal.c:3017
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f20f4781dac
RSP: 002b:00007fffc62fcc30 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: 0000000000000028 RBX: 00007f20f5474620 RCX: 00007f20f4781dac
RDX: 0000000000000028 RSI: 00007f20f5474670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fffc62fcc84 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f20f5474670 R15: 0000000000000000
</TASK>
INFO: task syz-executor:9167 blocked for more than 148 seconds.
Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:24240 pid:9167 tgid:9167 ppid:1 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
hci_disconn_cfm include/net/bluetooth/hci_core.h:2047 [inline]
hci_conn_hash_flush+0xbb/0x260 net/bluetooth/hci_conn.c:2698
hci_dev_close_sync+0x603/0x11a0 net/bluetooth/hci_sync.c:5212
hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483
hci_unregister_dev+0x213/0x620 net/bluetooth/hci_core.c:2698
vhci_release+0x79/0xf0 drivers/bluetooth/hci_vhci.c:664
__fput+0x3f8/0xb60 fs/file_table.c:450
task_work_run+0x14e/0x250 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xadd/0x2d70 kernel/exit.c:938
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
get_signal+0x24ed/0x26c0 kernel/signal.c:3017
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbc11181dac
RSP: 002b:00007fff01a95d50 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: 0000000000000068 RBX: 00007fbc11e74620 RCX: 00007fbc11181dac
RDX: 0000000000000068 RSI: 00007fbc11e74670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fff01a95da4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fbc11e74670 R15: 0000000000000000
</TASK>
INFO: task syz-executor:9173 blocked for more than 150 seconds.
Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:24976 pid:9173 tgid:9173 ppid:1 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
hci_disconn_cfm include/net/bluetooth/hci_core.h:2047 [inline]
hci_conn_hash_flush+0xbb/0x260 net/bluetooth/hci_conn.c:2698
hci_dev_close_sync+0x603/0x11a0 net/bluetooth/hci_sync.c:5212
hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483
hci_unregister_dev+0x213/0x620 net/bluetooth/hci_core.c:2698
vhci_release+0x79/0xf0 drivers/bluetooth/hci_vhci.c:664
__fput+0x3f8/0xb60 fs/file_table.c:450
task_work_run+0x14e/0x250 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xadd/0x2d70 kernel/exit.c:938
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
get_signal+0x24ed/0x26c0 kernel/signal.c:3017
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa643981dac
RSP: 002b:00007fff58d889a0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: 0000000000000028 RBX: 00007fa644674620 RCX: 00007fa643981dac
RDX: 0000000000000028 RSI: 00007fa644674670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fff58d889f4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fa644674670 R15: 0000000000000000
</TASK>
Showing all locks held in the system:
3 locks held by kworker/u8:0/11:
3 locks held by kworker/u8:1/12:
#0: ffff888030ce5148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024/12/10 07:10 | upstream | 7cb1b4663150 | cfc402b4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | INFO: task hung in hci_conn_hash_flush | ||
| 2024/09/25 00:40 | upstream | 97d8894b6f4c | 5643e0e9 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: task hung in hci_conn_hash_flush |