------------[ cut here ]------------
WARNING: CPU: 2 PID: 10309 at kernel/workqueue.c:2259 __queue_work+0xc2b/0x1070 kernel/workqueue.c:2258
Modules linked in:
CPU: 2 PID: 10309 Comm: syz.1.1432 Not tainted 6.10.0-syzkaller-05505-gb1bc554e009e #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 6b 92 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 7f bb 34 00 85 db 75 60 e8 76 c0 34 00 90 <0f> 0b 90 e9 08 f8 ff ff e8 68 c0 34 00 90 0f 0b 90 e9 b7 f7 ff ff
RSP: 0018:ffffc9000cc4f7a0 EFLAGS: 00010083
RAX: 0000000000026058 RBX: 0000000000000000 RCX: ffffc9000d002000
RDX: 0000000000040000 RSI: ffffffff8159d60a RDI: 0000000000000005
RBP: ffff88801d774b10 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000008 R14: ffff88801503f000 R15: ffff88801503f000
FS:  0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5d76b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020004100 CR3: 0000000065176000 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
 l2cap_chan_send+0xb86/0x2a30 net/bluetooth/l2cap_core.c:2577
 l2cap_sock_sendmsg+0x228/0x300 net/bluetooth/l2cap_sock.c:1128
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0x9b4/0xb50 net/socket.c:2597
 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2651
 __sys_sendmmsg+0x2a5/0x450 net/socket.c:2730
 __compat_sys_sendmmsg net/compat.c:360 [inline]
 __do_compat_sys_sendmmsg net/compat.c:367 [inline]
 __se_compat_sys_sendmmsg net/compat.c:364 [inline]
 __ia32_compat_sys_sendmmsg+0x9d/0x100 net/compat.c:364
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf745e579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f5d7657c EFLAGS: 00000292 ORIG_RAX: 0000000000000159
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000020004100
RDX: 00000000ffffff80 RSI: 0000000000010040 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi