Bluetooth: hci7: link tx timeout
Bluetooth: hci7: 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: 5759, name: kworker/u5:0
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
3 locks held by kworker/u5:0/5759:
 #0: ffff888042579138 ((wq_completion)hci7#2){+.+.}-{0:0}, at: process_one_work+0x99d/0x1770
 #1: ffff8880376cfd90 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}, at: process_one_work+0x9d0/0x1770
 #2: ffffffff8560c4e0 (rcu_read_lock){....}-{1:2}, at: __check_timeout+0x171/0x480
CPU: 1 PID: 5759 Comm: kworker/u5:0 Not tainted 6.5.0-rc3-next-20230727 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Workqueue: hci7 hci_tx_work
Call Trace:
 <TASK>
 dump_stack_lvl+0xc1/0xf0
 __might_resched+0x2f9/0x510
 __mutex_lock+0x9e/0x1a30
 hci_cmd_sync_submit+0x3b/0x2d0
 hci_cmd_sync_queue+0x7b/0xb0
 hci_disconnect+0x1c2/0x450
 __check_timeout+0x2cc/0x480
 hci_tx_work+0x7cb/0x1a70
 process_one_work+0xabf/0x1770
 worker_thread+0x64f/0x12a0
 kthread+0x33f/0x440
 ret_from_fork+0x2f/0x70
 ret_from_fork_asm+0x1b/0x30
 </TASK>

=============================
[ BUG: Invalid wait context ]
6.5.0-rc3-next-20230727 #1 Tainted: G        W         
-----------------------------
kworker/u5:0/5759 is trying to lock:
ffff8880454309b0 (&hdev->unregister_lock){+.+.}-{3:3}, at: hci_cmd_sync_submit+0x3b/0x2d0
other info that might help us debug this:
context-{4:4}
3 locks held by kworker/u5:0/5759:
 #0: ffff888042579138 ((wq_completion)hci7#2){+.+.}-{0:0}, at: process_one_work+0x99d/0x1770
 #1: ffff8880376cfd90 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}, at: process_one_work+0x9d0/0x1770
 #2: ffffffff8560c4e0 (rcu_read_lock){....}-{1:2}, at: __check_timeout+0x171/0x480
stack backtrace:
CPU: 1 PID: 5759 Comm: kworker/u5:0 Tainted: G        W          6.5.0-rc3-next-20230727 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Workqueue: hci7 hci_tx_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x91/0xf0
 __lock_acquire+0x1605/0x6340
 lock_acquire+0x19a/0x4c0
 __mutex_lock+0x12a/0x1a30
 hci_cmd_sync_submit+0x3b/0x2d0
 hci_cmd_sync_queue+0x7b/0xb0
 hci_disconnect+0x1c2/0x450
 __check_timeout+0x2cc/0x480
 hci_tx_work+0x7cb/0x1a70
 process_one_work+0xabf/0x1770
 worker_thread+0x64f/0x12a0
 kthread+0x33f/0x440
 ret_from_fork+0x2f/0x70
 ret_from_fork_asm+0x1b/0x30
 </TASK>
Bluetooth: hci7: command 0x0406 tx timeout