syzbot

------------[ cut here ]------------
WARNING: CPU: 0 PID: 5108 at kernel/workqueue.c:2257 __queue_work+0xcd3/0xf50 kernel/workqueue.c:2256
Modules linked in:
CPU: 0 UID: 0 PID: 5108 Comm: syz.0.0 Not tainted 6.12.0-rc1-syzkaller-00031-ge32cde8d2bd7 #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+0xcd3/0xf50 kernel/workqueue.c:2256
Code: ff e8 01 ab 37 00 90 0f 0b 90 e9 1e fd ff ff e8 f3 aa 37 00 eb 13 e8 ec aa 37 00 eb 0c e8 e5 aa 37 00 eb 05 e8 de aa 37 00 90 <0f> 0b 90 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc
RSP: 0018:ffffc90002e9fa88 EFLAGS: 00010093
RAX: ffffffff815d30c4 RBX: ffff88801f9c2440 RCX: ffff88801f9c2440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff815d2524 R09: 0000000000000000
R10: ffffc90002e9fb60 R11: fffff520005d3f6d R12: ffff888012502000
R13: ffff8880125021c0 R14: dffffc0000000000 R15: 0000000000000008
FS:  00007f12cf3ff6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020004000 CR3: 000000003dfe8000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 queue_work_on+0x1c2/0x380 kernel/workqueue.c:2390
 queue_work include/linux/workqueue.h:662 [inline]
 hci_recv_frame+0x598/0x6f0 net/bluetooth/hci_core.c:2940
 vhci_get_user drivers/bluetooth/hci_vhci.c:511 [inline]
 vhci_write+0x35a/0x490 drivers/bluetooth/hci_vhci.c:607
 new_sync_write fs/read_write.c:590 [inline]
 vfs_write+0xa6d/0xc90 fs/read_write.c:683
 ksys_write+0x183/0x2b0 fs/read_write.c:736
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12cf57cadf
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 c9 8d 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 1c 8e 02 00 48
RSP: 002b:00007f12cf3ff000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f12cf736058 RCX: 00007f12cf57cadf
RDX: 0000000000000007 RSI: 0000000020000a80 RDI: 00000000000000ca
RBP: 00007f12cf5f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000a80 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f12cf736058 R15: 00007ffcc411e7d8
 </TASK>