------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 0 PID: 26228 at kernel/locking/mutex.c:564 __mutex_lock_common kernel/locking/mutex.c:564 [inline]
WARNING: CPU: 0 PID: 26228 at kernel/locking/mutex.c:564 __mutex_lock+0x369/0xa60 kernel/locking/mutex.c:735
Modules linked in:
CPU: 0 UID: 0 PID: 26228 Comm: syz.2.8655 Tainted: G     U             6.13.0-rc7-syzkaller-00019-gc45323b7560e #0
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:564 [inline]
RIP: 0010:__mutex_lock+0x369/0xa60 kernel/locking/mutex.c:735
Code: d0 7c 08 84 d2 0f 85 6d 06 00 00 8b 0d 60 20 01 05 85 c9 75 19 90 48 c7 c6 60 be 4c 8b 48 c7 c7 c0 bc 4c 8b e8 a8 0c 3e f6 90 <0f> 0b 90 90 90 e9 f2 fd ff ff 4c 8d b5 60 ff ff ff 48 89 df 4c 89
RSP: 0018:ffffc90004ebfa80 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8880256bf898 RCX: ffffc9000cac9000
RDX: 0000000000080000 RSI: ffffffff815a17d6 RDI: 0000000000000001
RBP: ffffc90004ebfbc0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000002 R14: 0000000000000000 R15: ffffc90004ebfb00
FS:  00007ffa740306c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efcefee7440 CR3: 000000005d990000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hci_devcd_register+0x47/0x170 net/bluetooth/coredump.c:415
 force_devcd_write+0x175/0x350 drivers/bluetooth/hci_vhci.c:346
 full_proxy_write+0xfd/0x1b0 fs/debugfs/file.c:369
 vfs_write+0x24c/0x1150 fs/read_write.c:677
 ksys_write+0x12b/0x250 fs/read_write.c:731
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffa73185d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffa74030038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffa73375fa0 RCX: 00007ffa73185d29
RDX: 000000000000000e RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007ffa73201b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffa73375fa0 R15: 00007ffce4b6b868
 </TASK>