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workqueue: cannot queue hci_conn_timeout on wq hci2
WARNING: kernel/workqueue.c:2270 at __queue_work+0xd08/0x1150 kernel/workqueue.c:2269, CPU#3: syz.2.32866/11989
Modules linked in:
CPU: 3 UID: 0 PID: 11989 Comm: syz.2.32866 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__queue_work+0xd0c/0x1150 kernel/workqueue.c:2269
Code: 00 00 00 fc ff df 49 8d 94 24 78 01 00 00 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 04 04 00 00 48 8d 3d 58 9a 0c 0f 48 8b 75 18 <67> 48 0f b9 3a e9 2a f7 ff ff e8 85 d1 38 00 90 0f 0b 90 e9 b2 f5
RSP: 0018:ffffc9000e23fbf0 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1100ab3f94b
RDX: ffff88803bb91178 RSI: ffffffff8a86d4e0 RDI: ffffffff90dc62e0
RBP: ffff8880559fca40 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88803bb91000
R13: ffff8880571c8000 R14: ffff8880559fca88 R15: ffff8880559fca48
FS: 0000555562fd2500(0000) GS:ffff8880d664a000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdc3a071fc0 CR3: 0000000055ab7000 CR4: 0000000000352ef0
Call Trace:
<TASK>
__queue_delayed_work+0x365/0x470 kernel/workqueue.c:2522
queue_delayed_work_on+0x180/0x1e0 kernel/workqueue.c:2574
queue_delayed_work include/linux/workqueue.h:684 [inline]
hci_conn_drop include/net/bluetooth/hci_core.h:1712 [inline]
hci_conn_drop include/net/bluetooth/hci_core.h:1686 [inline]
hci_connect_sco+0x4d2/0xef0 net/bluetooth/hci_conn.c:1773
sco_connect net/bluetooth/sco.c:339 [inline]
sco_sock_connect+0x303/0xcb0 net/bluetooth/sco.c:665
__sys_connect_file+0x141/0x1a0 net/socket.c:2089
__sys_connect+0x141/0x170 net/socket.c:2108
__do_sys_connect net/socket.c:2114 [inline]
__se_sys_connect net/socket.c:2111 [inline]
__x64_sys_connect+0x72/0xb0 net/socket.c:2111
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdc3a19c629
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe50f618b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007fdc3a415fa0 RCX: 00007fdc3a19c629
RDX: 0000000000000008 RSI: 0000200000000340 RDI: 0000000000000005
RBP: 00007fdc3a232b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdc3a415fac R14: 00007fdc3a415fa0 R15: 00007fdc3a415fa0
</TASK>
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 fc add %bh,%ah
4: ff lcall (bad)
5: df 49 8d fisttps -0x73(%rcx)
8: 94 xchg %eax,%esp
9: 24 78 and $0x78,%al
b: 01 00 add %eax,(%rax)
d: 00 48 89 add %cl,-0x77(%rax)
10: f9 stc
11: 48 c1 e9 03 shr $0x3,%rcx
15: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1)
19: 0f 85 04 04 00 00 jne 0x423
1f: 48 8d 3d 58 9a 0c 0f lea 0xf0c9a58(%rip),%rdi # 0xf0c9a7e
26: 48 8b 75 18 mov 0x18(%rbp),%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: e9 2a f7 ff ff jmp 0xfffff75e
34: e8 85 d1 38 00 call 0x38d1be
39: 90 nop
3a: 0f 0b ud2
3c: 90 nop
3d: e9 .byte 0xe9
3e: b2 f5 mov $0xf5,%dl