INFO: task syz-executor:10466 blocked for more than 143 seconds.
Not tainted 6.15.0-syzkaller-12425-g82cbd06f327f #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20568 pid:10466 tgid:10466 ppid:1 task_flags:0x40014c flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6878
schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x2bf/0x5d0 kernel/sched/completion.c:148
__flush_work+0x9b9/0xbc0 kernel/workqueue.c:4246
__cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4366
hidp_session_remove+0x62/0x260 net/bluetooth/hidp/core.c:1169
l2cap_unregister_all_users net/bluetooth/l2cap_core.c:1748 [inline]
l2cap_conn_del+0x23a/0x680 net/bluetooth/l2cap_core.c:1777
hci_disconn_cfm include/net/bluetooth/hci_core.h:2065 [inline]
hci_conn_hash_flush+0x10d/0x230 net/bluetooth/hci_conn.c:2543
hci_dev_close_sync+0xaef/0x1330 net/bluetooth/hci_sync.c:5225
hci_dev_do_close net/bluetooth/hci_core.c:483 [inline]
hci_unregister_dev+0x206/0x500 net/bluetooth/hci_core.c:2678
vhci_release+0x80/0xd0 drivers/bluetooth/hci_vhci.c:665
__fput+0x449/0xa70 fs/file_table.c:465
task_work_run+0x1d1/0x260 kernel/task_work.c:227
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x6ad/0x22e0 kernel/exit.c:955
do_group_exit+0x21c/0x2d0 kernel/exit.c:1104
__do_sys_exit_group kernel/exit.c:1115 [inline]
__se_sys_exit_group kernel/exit.c:1113 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1113
x64_sys_call+0x21ba/0x21c0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f73c118e929
RSP: 002b:00007ffd8431cc98 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f73c118e929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043
RBP: 00007f73c11ee8f0 R08: 00007ffd8431aa37 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000003 R14: 00000000ffffffff R15: 00007ffd8431ce50
INFO: task khidpd_16c05504:10628 blocked for more than 144 seconds.
Not tainted 6.15.0-syzkaller-12425-g82cbd06f327f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:khidpd_16c05504 state:D stack:29416 pid:10628 tgid:10628 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6878
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x724/0xe80 kernel/locking/mutex.c:747
l2cap_unregister_user+0x6a/0x1b0 net/bluetooth/l2cap_core.c:1728
hidp_session_thread+0x3c9/0x410 net/bluetooth/hidp/core.c:1304
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e13f060 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e13f060 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e13f060 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770
4 locks held by kworker/u9:0/51:
#0: ffff888054c6d948 ((wq_completion)hci6#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888054c6d948 ((wq_completion)hci6#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90000bc7bc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90000bc7bc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff8880504f8078 (&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x8e0 net/bluetooth/hci_event.c:3713
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2047 [inline]
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x516/0x8e0 net/bluetooth/hci_event.c:3747
2 locks held by kworker/u8:4/59:
4 locks held by kworker/u9:1/5154:
#0: ffff88802b4ea948 ((wq_completion)hci11#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88802b4ea948 ((wq_completion)hci11#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9000e70fbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000e70fbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff88805d2b4078
(&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x8e0 net/bluetooth/hci_event.c:3713
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2047 [inline]
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x516/0x8e0 net/bluetooth/hci_event.c:3747
2 locks held by getty/5601:
#0: ffff88814c9350a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fee2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
4 locks held by kworker/u9:2/5841:
#0: ffff888031edf948 ((wq_completion)hci5#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888031edf948 ((wq_completion)hci5#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9000438fbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000438fbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff888034944078
(
&hdev->lock){+.+.}-{4:4}
, at: hci_remote_features_evt+0x9b/0x8e0 net/bluetooth/hci_event.c:3713
#3:
ffffffff8f677668
(
hci_cb_list_lock
){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2047 [inline]
){+.+.}-{4:4}, at: hci_remote_features_evt+0x516/0x8e0 net/bluetooth/hci_event.c:3747
4 locks held by kworker/u9:3/5844:
#0: ffff88806b737148 ((wq_completion)hci13#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88806b737148 ((wq_completion)hci13#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc900047dfbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc900047dfbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff88807a26c078 (&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x8e0 net/bluetooth/hci_event.c:3713
#3:
ffffffff8f677668
(hci_cb_list_lock
){+.+.}-{4:4}
, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2047 [inline]
, at: hci_remote_features_evt+0x516/0x8e0 net/bluetooth/hci_event.c:3747
4 locks held by kworker/u9:4/5847:
#0: ffff88807c92f148 ((wq_completion)hci9#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88807c92f148 ((wq_completion)hci9#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc900047ffbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc900047ffbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff88802993c078
(&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x8e0 net/bluetooth/hci_event.c:3713
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2047 [inline]
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x516/0x8e0 net/bluetooth/hci_event.c:3747
4 locks held by kworker/u9:5/5850:
#0:
ffff88802f68d148
(
(wq_completion)hci8
#2
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3213 [inline]
, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9000481fbc0 (
(work_completion)(&hdev->rx_work)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3214 [inline]
, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2:
ffff888077380078
(
&hdev->lock
){+.+.}-{4:4}
, at: hci_remote_features_evt+0x9b/0x8e0 net/bluetooth/hci_event.c:3713
#3: ffffffff8f677668
(
hci_cb_list_lock
){+.+.}-{4:4}
, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2047 [inline]
, at: hci_remote_features_evt+0x516/0x8e0 net/bluetooth/hci_event.c:3747
4 locks held by kworker/u9:6/5851:
#0:
ffff88807e270148
(
(wq_completion)hci12
#2
){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9000482fbc0
(
(work_completion)(&hdev->rx_work)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3214 [inline]
, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff88807a90c078 (&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x8e0 net/bluetooth/hci_event.c:3713
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2047 [inline]
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x516/0x8e0 net/bluetooth/hci_event.c:3747
4 locks held by kworker/u9:7/5852:
#0: ffff88804fac8148 ((wq_completion)hci10#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88804fac8148 ((wq_completion)hci10#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9000483fbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000483fbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff88804e3ec078 (&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x8e0 net/bluetooth/hci_event.c:3713
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2047 [inline]
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x516/0x8e0 net/bluetooth/hci_event.c:3747
4 locks held by kworker/u9:8/5853:
#0: ffff88807a952948 ((wq_completion)hci16#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88807a952948 ((wq_completion)hci16#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9000484fbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000484fbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff888063dd4078 (&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x8e0 net/bluetooth/hci_event.c:3713
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2047 [inline]
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x516/0x8e0 net/bluetooth/hci_event.c:3747
4 locks held by kworker/u9:9/5854:
#0: ffff888079873948 ((wq_completion)hci7#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888079873948 ((wq_completion)hci7#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9000485fbc0
(
(work_completion)(&hdev->rx_work)
){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff88807f37c078 (&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x8e0 net/bluetooth/hci_event.c:3713
#3: ffffffff8f677668 (
hci_cb_list_lock
){+.+.}-{4:4}
, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2047 [inline]
, at: hci_remote_features_evt+0x516/0x8e0 net/bluetooth/hci_event.c:3747
3 locks held by kworker/u8:15/6569:
5 locks held by kworker/1:7/9605:
3 locks held by kworker/0:12/10207:
#0:
ffff88801a480d48
(
(wq_completion)events
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3213 [inline]
, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1:
ffffc90003c6fbc0
(
free_ipc_work
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3214 [inline]
, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2:
ffffffff8e144b78
(
rcu_state.exp_mutex
){+.+.}-{4:4}
, at: exp_funnel_lock kernel/rcu/tree_exp.h:304 [inline]
, at: synchronize_rcu_expedited+0x2f6/0x730 kernel/rcu/tree_exp.h:998
5 locks held by syz-executor/10466:
#0:
ffff888024998d80
(
&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close net/bluetooth/hci_core.c:481 [inline]
&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x1fe/0x500 net/bluetooth/hci_core.c:2678
#1: ffff888024998078
(
&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x66a/0x1330 net/bluetooth/hci_sync.c:5213
#2: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:2062 [inline]
#2: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_hash_flush+0xa1/0x230 net/bluetooth/hci_conn.c:2543
#3: ffff88807b109b38 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x70/0x680 net/bluetooth/l2cap_core.c:1762
#4: ffffffff8f6a04f0 (hidp_session_sem){++++}-{4:4}, at: hidp_session_remove+0x2c/0x260 net/bluetooth/hidp/core.c:1165
1 lock held by khidpd_16c05504/10628:
#0: ffff888024998078 (&hdev->lock){+.+.}-{4:4}, at: l2cap_unregister_user+0x6a/0x1b0 net/bluetooth/l2cap_core.c:1728
1 lock held by syz.0.1421/11136:
#0: ffffffff8f6a04f0 (hidp_session_sem){++++}-{4:4}, at: hidp_session_find+0x1a/0x100 net/bluetooth/hidp/core.c:1026
1 lock held by syz.1.1579/11666:
#0:
ffff888034944078
(
&hdev->lock){+.+.}-{4:4}, at: l2cap_chan_connect+0x102/0xe30 net/bluetooth/l2cap_core.c:6957
1 lock held by syz.1.1579/11668:
#0: ffffffff8f6a04f0 (hidp_session_sem){++++}-{4:4}, at: hidp_session_find+0x1a/0x100 net/bluetooth/hidp/core.c:1026
1 lock held by syz.4.1611/11775:
#0:
ffff888034944078
(
&hdev->lock
){+.+.}-{4:4}, at: l2cap_chan_connect+0x102/0xe30 net/bluetooth/l2cap_core.c:6957
1 lock held by syz.2.1716/12129:
#0: ffffffff8f6a04f0 (hidp_session_sem){++++}-{4:4}, at: hidp_get_connlist+0x97/0x2b0 net/bluetooth/hidp/core.c:1423
1 lock held by syz.5.1743/12296:
#0: ffff888077380078 (&hdev->lock){+.+.}-{4:4}, at: l2cap_chan_connect+0x102/0xe30 net/bluetooth/l2cap_core.c:6957
1 lock held by syz.6.1831/12588:
#0: ffff88804e3ec078 (&hdev->lock){+.+.}-{4:4}, at: sco_connect net/bluetooth/sco.c:323 [inline]
#0: ffff88804e3ec078 (&hdev->lock){+.+.}-{4:4}, at: sco_sock_connect+0x197/0x9b0 net/bluetooth/sco.c:658
1 lock held by syz.6.1831/12589:
#0: ffff88804e3ec078 (&hdev->lock){+.+.}-{4:4}, at: sco_connect net/bluetooth/sco.c:323 [inline]
#0: ffff88804e3ec078 (&hdev->lock){+.+.}-{4:4}, at: sco_sock_connect+0x197/0x9b0 net/bluetooth/sco.c:658
1 lock held by syz.7.1864/12712:
#0: ffff88804e3ec078 (&hdev->lock){+.+.}-{4:4}, at: l2cap_chan_connect+0x102/0xe30 net/bluetooth/l2cap_core.c:6957
4 locks held by kworker/u9:10/13148:
#0: ffff888033c5b148 ((wq_completion)hci14#2){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3213 [inline]
, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1:
ffffc9001abefbc0
(
(work_completion)(&hdev->rx_work)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3214 [inline]
, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2:
ffff88804febc078 (&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x8e0 net/bluetooth/hci_event.c:3713
#3:
ffffffff8f677668
(
hci_cb_list_lock
){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2047 [inline]
){+.+.}-{4:4}, at: hci_remote_features_evt+0x516/0x8e0 net/bluetooth/hci_event.c:3747
1 lock held by syz.8.2001/13162:
#0: ffff88807a26c078 (&hdev->lock){+.+.}-{4:4}, at: l2cap_chan_connect+0x102/0xe30 net/bluetooth/l2cap_core.c:6957
1 lock held by syz.8.2001/13163:
#0: ffffffff8f6a04f0 (hidp_session_sem){++++}-{4:4}, at: hidp_session_find+0x1a/0x100 net/bluetooth/hidp/core.c:1026
1 lock held by syz.1.2056/13375:
#0: ffff88807a26c078
(
&hdev->lock){+.+.}-{4:4}, at: l2cap_chan_connect+0x102/0xe30 net/bluetooth/l2cap_core.c:6957
1 lock held by syz.1.2056/13378:
#0: ffffffff8f6a04f0 (hidp_session_sem){++++}-{4:4}, at: hidp_session_find+0x1a/0x100 net/bluetooth/hidp/core.c:1026
1 lock held by syz.9.2086/13475:
#0: ffff88807a90c078 (&hdev->lock){+.+.}-{4:4}, at: l2cap_chan_connect+0x102/0xe30 net/bluetooth/l2cap_core.c:6957
4 locks held by kworker/u9:11/13505:
#0: ffff888030c33948 ((wq_completion)hci15#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888030c33948 ((wq_completion)hci15#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90003fdfbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90003fdfbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff8880697bc078 (&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x8e0 net/bluetooth/hci_event.c:3713
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2047 [inline]
#3: ffffffff8f677668 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x516/0x8e0 net/bluetooth/hci_event.c:3747
2 locks held by syz.0.2167/13826:
#0: ffffffff8f699b68 (rfcomm_mutex){+.+.}-{4:4}, at: rfcomm_dlc_open+0xa4/0xed0 net/bluetooth/rfcomm/core.c:429
#1: ffff888063dd4078 (&hdev->lock){+.+.}-{4:4}, at: l2cap_chan_connect+0x102/0xe30 net/bluetooth/l2cap_core.c:6957
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-syzkaller-12425-g82cbd06f327f #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:470
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 9605 Comm: kworker/1:7 Not tainted 6.15.0-syzkaller-12425-g82cbd06f327f #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events hidp_session_dev_work
RIP: 0010:__asan_memset+0x4/0x50 mm/kasan/shadow.c:83
Code: ba 01 00 00 00 e9 bc e4 ff ff 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <55> 41 56 53 48 89 d3 89 f5 49 89 fe 48 8b 4c 24 18 48 89 d6 ba 01
RSP: 0018:ffffc9000b1d6798 EFLAGS: 00000246
RAX: ffffffff8b61f6c3 RBX: 00000005ffff0a00 RCX: ffff88802f1d8000
RDX: 0000000000000018 RSI: 0000000000000000 RDI: ffffc9000b1d6820
RBP: ffffc9000b1d68c0 R08: ffff88802f1d8000 R09: 0000000000000008
R10: 0000000000000007 R11: 0000000000000000 R12: 000000000000017c
R13: 000000000000017c R14: ffffc9000b1d6ba1 R15: 0000000005ffff0a
FS: 0000000000000000(0000) GS:ffff888125d55000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcc3559fdc CR3: 000000000df38000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
number+0x271/0xf60 lib/vsprintf.c:455
vsnprintf+0x91b/0xf00 lib/vsprintf.c:2838
sprintf+0xd9/0x120 lib/vsprintf.c:3037
print_time kernel/printk/printk.c:1381 [inline]
info_print_prefix+0x155/0x310 kernel/printk/printk.c:1407
record_print_text+0x154/0x430 kernel/printk/printk.c:1456
printk_get_next_message+0x26d/0x7b0 kernel/printk/printk.c:3024
console_emit_next_record kernel/printk/printk.c:3092 [inline]
console_flush_all+0x4ca/0xc40 kernel/printk/printk.c:3226
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0xc4/0x270 kernel/printk/printk.c:3325
vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450
dev_vprintk_emit+0x337/0x3f0 drivers/base/core.c:4917
dev_printk_emit+0xe0/0x130 drivers/base/core.c:4928
_dev_warn+0x10a/0x160 drivers/base/core.c:4984
hid_parser_main+0x8b8/0xc40 drivers/hid/hid-core.c:-1
hid_open_report+0x858/0xee0 drivers/hid/hid-core.c:1328
hid_parse include/linux/hid.h:1133 [inline]
hid_generic_probe+0x3d/0x90 drivers/hid/hid-generic.c:66
__hid_device_probe drivers/hid/hid-core.c:2724 [inline]
hid_device_probe+0x39d/0x710 drivers/hid/hid-core.c:2761
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x26d/0x9a0 drivers/base/dd.c:657
__driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:799
driver_probe_device+0x4f/0x430 drivers/base/dd.c:829
__device_attach_driver+0x2ce/0x530 drivers/base/dd.c:957
bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:462
__device_attach+0x2b8/0x400 drivers/base/dd.c:1029
bus_probe_device+0x185/0x260 drivers/base/bus.c:537
device_add+0x7b6/0xb50 drivers/base/core.c:3692
hid_add_device+0x398/0x540 drivers/hid/hid-core.c:2907
hidp_session_dev_add net/bluetooth/hidp/core.c:856 [inline]
hidp_session_dev_work+0x45/0x160 net/bluetooth/hidp/core.c:895
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245