Bluetooth: hci2: link tx timeout
Bluetooth: hci2: 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: 15458, name: kworker/u7:1
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
3 locks held by kworker/u7:1/15458:
#0: ffff88800ba4d538 ((wq_completion)hci2#2){+.+.}-{0:0}, at: process_one_work+0x69e/0x1450
#1: ffff88801a94fd98 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}, at: process_one_work+0x6d1/0x1450
#2: ffffffff8560e920 (rcu_read_lock){....}-{1:2}, at: __check_timeout+0x171/0x480
CPU: 1 PID: 15458 Comm: kworker/u7:1 Not tainted 6.5.0-rc7-next-20230822 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Workqueue: hci2 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+0x7c8/0x1450
worker_thread+0x80e/0x1190
kthread+0x33f/0x440
ret_from_fork+0x48/0x80
ret_from_fork_asm+0x1b/0x30
</TASK>
=============================
[ BUG: Invalid wait context ]
6.5.0-rc7-next-20230822 #1 Tainted: G W
-----------------------------
kworker/u7:1/15458 is trying to lock:
ffff888031bb89b0 (&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/u7:1/15458:
#0: ffff88800ba4d538 ((wq_completion)hci2#2){+.+.}-{0:0}, at: process_one_work+0x69e/0x1450
#1: ffff88801a94fd98 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}, at: process_one_work+0x6d1/0x1450
#2: ffffffff8560e920 (rcu_read_lock){....}-{1:2}, at: __check_timeout+0x171/0x480
stack backtrace:
CPU: 1 PID: 15458 Comm: kworker/u7:1 Tainted: G W 6.5.0-rc7-next-20230822 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Workqueue: hci2 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+0x7c8/0x1450
worker_thread+0x80e/0x1190
kthread+0x33f/0x440
ret_from_fork+0x48/0x80
ret_from_fork_asm+0x1b/0x30
</TASK>
audit: type=1400 audit(1692783490.798:13): avc: denied { watch_reads } for pid=17414 comm="syz-executor.0" path="/dev/bsg" dev="devtmpfs" ino=113 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:device_t:s0 tclass=dir permissive=1
syz-executor.4[17425]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set
Bluetooth: Frame is too long (len 10, expected len 4)
Bluetooth: Frame is too long (len 10, expected len 4)
syz-executor.4[17449]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set
Bluetooth: hci2: command 0x0406 tx timeout