------------[ cut here ]------------
WARNING: CPU: 1 PID: 9196 at kernel/workqueue.c:2259 __queue_work+0xc2b/0x1070 kernel/workqueue.c:2258
Modules linked in:
CPU: 1 UID: 0 PID: 9196 Comm: syz-executor Not tainted 6.11.0-rc4-syzkaller-00222-g7eb61cc674ee #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__queue_work+0xc2b/0x1070 kernel/workqueue.c:2258
Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 6e 34 92 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 6f 0a 35 00 85 db 75 60 e8 26 08 35 00 90 <0f> 0b 90 e9 08 f8 ff ff e8 18 08 35 00 90 0f 0b 90 e9 b7 f7 ff ff
RSP: 0018:ffffc900032bfa58 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81557071
RDX: ffff88802b7fa440 RSI: ffffffff8155707a RDI: 0000000000000005
RBP: ffff88801314ca80 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000008 R14: ffff88802f899800 R15: ffff88802f899800
FS:  000055556bad7500(0000) GS:ffff88806b100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020246000 CR3: 0000000012796000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 queue_work_on+0x11a/0x140 kernel/workqueue.c:2392
 queue_work include/linux/workqueue.h:621 [inline]
 hci_recv_frame+0x23f/0x7e0 net/bluetooth/hci_core.c:2934
 vhci_get_user drivers/bluetooth/hci_vhci.c:511 [inline]
 vhci_write+0x38b/0x480 drivers/bluetooth/hci_vhci.c:607
 do_iter_readv_writev+0x531/0x800 fs/read_write.c:741
 vfs_writev+0x36f/0xde0 fs/read_write.c:971
 do_writev+0x137/0x370 fs/read_write.c:1018
 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: 0033:0x7f6f91f79b0d
Code: 28 89 54 24 1c 48 89 74 24 10 89 7c 24 08 e8 1a 7c 02 00 8b 54 24 1c 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 14 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 33 44 89 c7 48 89 44 24 08 e8 6e 7c 02 00 48
RSP: 002b:00007ffc5ea20eb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6f91f79b0d
RDX: 0000000000000003 RSI: 00007ffc5ea20ef0 RDI: 00000000000000ca
RBP: 000055556bad74a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000009 R15: 0000000000000000
 </TASK>