[syzbot] [bluetooth?] WARNING in msft_do_close

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1254ae29180000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe78468a74fdc3b7
dashboard link: https://syzkaller.appspot.com/bug?extid=bb31c235295febed08db
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/0f7abe4afac7/disk-fe46a7dd.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/82598d09246c/vmlinux-fe46a7dd.xz
kernel image: https://storage.googleapis.com/syzbot-assets/efa23788c875/bzImage-fe46a7dd.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+bb31c2...@syzkaller.appspotmail.com

------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 1 PID: 4465 at kernel/locking/mutex.c:587 __mutex_lock_common kernel/locking/mutex.c:587 [inline]
WARNING: CPU: 1 PID: 4465 at kernel/locking/mutex.c:587 __mutex_lock+0xc3b/0xd70 kernel/locking/mutex.c:752
Modules linked in:
CPU: 1 PID: 4465 Comm: kworker/u9:1 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: hci6 hci_power_on
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:587 [inline]
RIP: 0010:__mutex_lock+0xc3b/0xd70 kernel/locking/mutex.c:752
Code: 0f b6 04 20 84 c0 0f 85 18 01 00 00 83 3d 0c 81 09 04 00 75 19 90 48 c7 c7 e0 ac aa 8b 48 c7 c6 80 ad aa 8b e8 d6 dc d9 f5 90 <0f> 0b 90 90 90 e9 c3 f4 ff ff 90 0f 0b 90 e9 d2 f8 ff ff 90 0f 0b
RSP: 0018:ffffc9000ce6f8a0 EFLAGS: 00010246
RAX: ad875c4e249db200 RBX: 0000000000000000 RCX: ffff88802eca9e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000ce6f9f8 R08: ffffffff8157cc12 R09: fffffbfff1bf9650
R10: dffffc0000000000 R11: fffffbfff1bf9650 R12: dffffc0000000000
R13: ffff888063019040 R14: 0000000000000000 R15: ffff888063019040
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5a5bf7e1f8 CR3: 000000007ece8000 CR4: 0000000000350ef0
Call Trace:
<TASK>
msft_do_close+0x2e9/0x790 net/bluetooth/msft.c:694
hci_dev_close_sync+0xa1d/0x1050 net/bluetooth/hci_sync.c:5162
hci_dev_do_close net/bluetooth/hci_core.c:554 [inline]
hci_power_on+0x328/0x700 net/bluetooth/hci_core.c:1033
process_one_work kernel/workqueue.c:3254 [inline]
process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335
worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
</TASK>


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