------------[ cut here ]------------
workqueue: cannot queue hci_rx_work on wq hci0
WARNING: CPU: 0 PID: 26638 at kernel/workqueue.c:2258 __queue_work+0x2e5/0x1010 kernel/workqueue.c:2256
Modules linked in:
CPU: 0 UID: 0 PID: 26638 Comm: syz.6.6891 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__queue_work+0x2e5/0x1010 kernel/workqueue.c:2256
Code: 42 80 3c 28 00 74 08 48 89 ef e8 c6 a8 96 00 48 8b 75 00 49 81 c6 68 01 00 00 48 c7 c7 20 f4 e9 8a 4c 89 f2 e8 2c 31 f9 ff 90 <0f> 0b 90 90 e9 f2 fe ff ff e8 fd e9 34 00 eb 2e e8 f6 e9 34 00 e9
RSP: 0018:ffffc900042ffa68 EFLAGS: 00010046
RAX: 31051ea13817a700 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90011841000 RSI: 0000000000000497 RDI: 0000000000000498
RBP: ffff888057a70af0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed101710487b R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888034ba6168 R15: ffff88803374da2c
FS:  00007fb93e5c56c0(0000) GS:ffff888126df6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb93e5c4f98 CR3: 000000002f7a4000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 queue_work_on+0x181/0x270 kernel/workqueue.c:2392
 queue_work include/linux/workqueue.h:669 [inline]
 hci_recv_frame+0x625/0x7c0 net/bluetooth/hci_core.c:2968
 vhci_get_user drivers/bluetooth/hci_vhci.c:520 [inline]
 vhci_write+0x35a/0x4a0 drivers/bluetooth/hci_vhci.c:616
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5d5/0xb40 fs/read_write.c:686
 ksys_write+0x14b/0x260 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb94037e1ff
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007fb93e5c5000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb9405d6090 RCX: 00007fb94037e1ff
RDX: 0000000000000007 RSI: 0000200000000000 RDI: 00000000000000ca
RBP: 00007fb940403f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007fb9405d6128 R14: 00007fb9405d6090 R15: 00007fffcc1e5368
 </TASK>