Bluetooth: hci3: link tx timeout
Bluetooth: hci3: killing stalled connection 11:aa:aa:aa:aa:aa
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:580
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 6049, name: kworker/u5:2
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
3 locks held by kworker/u5:2/6049:
 #0: ffff0000c5d50d38 ((wq_completion)hci3#2){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2603
 #1: ffff800096f97c20 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2605
 #2: ffff80008e373780 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:302
CPU: 1 PID: 6049 Comm: kworker/u5:2 Not tainted 6.6.0-rc4-syzkaller-g19af4a4ed414 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Workqueue: hci3 hci_tx_work
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233
 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 __might_resched+0x374/0x4d0 kernel/sched/core.c:10187
 __might_sleep+0x90/0xe4 kernel/sched/core.c:10116
 __mutex_lock_common+0xcc/0x21a0 kernel/locking/mutex.c:580
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799
 hci_cmd_sync_submit+0x4c/0x230 net/bluetooth/hci_sync.c:699
 hci_cmd_sync_queue+0x84/0x9c net/bluetooth/hci_sync.c:739
 hci_abort_conn net/bluetooth/hci_conn.c:2928 [inline]
 hci_disconnect+0x2e8/0x4f4 net/bluetooth/hci_conn.c:258
 hci_link_tx_to net/bluetooth/hci_core.c:3421 [inline]
 __check_timeout+0x27c/0x3ac net/bluetooth/hci_core.c:3567
 hci_sched_le net/bluetooth/hci_core.c:3750 [inline]
 hci_tx_work+0xf88/0x1850 net/bluetooth/hci_core.c:3828
 process_one_work+0x694/0x1204 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x938/0xef4 kernel/workqueue.c:2784
 kthread+0x288/0x310 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857

=============================
[ BUG: Invalid wait context ]
6.6.0-rc4-syzkaller-g19af4a4ed414 #0 Tainted: G        W         
-----------------------------
kworker/u5:2/6049 is trying to lock:
ffff0000cbbf89b0 (&hdev->unregister_lock){+.+.}-{3:3}, at: hci_cmd_sync_submit+0x4c/0x230 net/bluetooth/hci_sync.c:699
other info that might help us debug this:
context-{4:4}
3 locks held by kworker/u5:2/6049:
 #0: ffff0000c5d50d38 ((wq_completion)hci3#2){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2603
 #1: ffff800096f97c20 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2605
 #2: ffff80008e373780 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:302
stack backtrace:
CPU: 1 PID: 6049 Comm: kworker/u5:2 Tainted: G        W          6.6.0-rc4-syzkaller-g19af4a4ed414 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Workqueue: hci3 hci_tx_work
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233
 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4750 [inline]
 check_wait_context kernel/locking/lockdep.c:4820 [inline]
 __lock_acquire+0x1bec/0x75e8 kernel/locking/lockdep.c:5086
 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5753
 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799
 hci_cmd_sync_submit+0x4c/0x230 net/bluetooth/hci_sync.c:699
 hci_cmd_sync_queue+0x84/0x9c net/bluetooth/hci_sync.c:739
 hci_abort_conn net/bluetooth/hci_conn.c:2928 [inline]
 hci_disconnect+0x2e8/0x4f4 net/bluetooth/hci_conn.c:258
 hci_link_tx_to net/bluetooth/hci_core.c:3421 [inline]
 __check_timeout+0x27c/0x3ac net/bluetooth/hci_core.c:3567
 hci_sched_le net/bluetooth/hci_core.c:3750 [inline]
 hci_tx_work+0xf88/0x1850 net/bluetooth/hci_core.c:3828
 process_one_work+0x694/0x1204 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x938/0xef4 kernel/workqueue.c:2784
 kthread+0x288/0x310 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857