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workqueue: cannot queue hci_cmd_timeout on wq hci3
WARNING: kernel/workqueue.c:2270 at __queue_work+0xd08/0x1150 kernel/workqueue.c:2269, CPU#3: dhcpcd/5642
Modules linked in:
CPU: 3 UID: 0 PID: 5642 Comm: dhcpcd Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
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 88 e4 0c 0f 48 8b 75 18 <67> 48 0f b9 3a e9 2a f7 ff ff e8 a5 04 39 00 90 0f 0b 90 e9 b2 f5
RSP: 0018:ffffc900006f8be8 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff1100b226951
RDX: ffff888041de6178 RSI: ffffffff8a84d780 RDI: ffffffff90dcd770
RBP: ffff888059134a70 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000000 R12: ffff888041de6000
R13: 1ffff920000df18f R14: ffffffff81d00400 R15: 0000000000000001
FS: 00007f612a865780(0000) GS:ffff8880d6639000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055bf0bcd80f8 CR3: 000000002b852000 CR4: 0000000000352ef0
Call Trace:
call_timer_fn+0x19a/0x670 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1794 [inline]
__run_timers+0x570/0xb30 kernel/time/timer.c:2373
__run_timer_base kernel/time/timer.c:2385 [inline]
__run_timer_base kernel/time/timer.c:2377 [inline]
run_timer_base+0x114/0x190 kernel/time/timer.c:2394
run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2404
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 56 e8 50 f6 48 89 df e8 3e 38 51 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 55 59 41 f6 65 8b 05 5e 4e 7a 08 85 c0 74 16 5b
RSP: 0018:ffffc900034f7870 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff88802d91d0c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8de7af65 RDI: ffffffff8c1b1ea0
RBP: 0000000000000286 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000003 R12: ffff8880291a5040
R13: ffff88802d91d0c0 R14: ffff8880291a4f40 R15: ffff8880291a4ec0
sock_def_readable+0x154/0x630 net/core/sock.c:3611
unix_dgram_sendmsg+0xccd/0x1820 net/unix/af_unix.c:2283
unix_seqpacket_sendmsg+0x12a/0x1d0 net/unix/af_unix.c:2528
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg net/socket.c:742 [inline]
sock_write_iter+0x524/0x5a0 net/socket.c:1195
do_iter_readv_writev+0x6ee/0x920 fs/read_write.c:829
vfs_writev+0x360/0xe10 fs/read_write.c:1059
do_writev+0x28a/0x340 fs/read_write.c:1105
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: 0033:0x7f612a8ef407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007fffe04c3ac0 EFLAGS: 00000202 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f612a865780 RCX: 00007f612a8ef407
RDX: 0000000000000002 RSI: 00007fffe04c3b60 RDI: 000000000000000b
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000b
R13: 00007f612a865708 R14: 0000000000000000 R15: 00007fffe04d3c70
----------------
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 88 e4 0c 0f lea 0xf0ce488(%rip),%rdi # 0xf0ce4ae
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 a5 04 39 00 call 0x3904de
39: 90 nop
3a: 0f 0b ud2
3c: 90 nop
3d: e9 .byte 0xe9
3e: b2 f5 mov $0xf5,%dl