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workqueue: cannot queue hci_cmd_timeout on wq hci3
WARNING: kernel/workqueue.c:2305 at __queue_work+0xd2d/0x12b0 kernel/workqueue.c:2304, CPU#3: dhcpcd/5449
Modules linked in:
CPU: 3 UID: 0 PID: 5449 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+0xd31/0x12b0 kernel/workqueue.c:2304
Code: 00 00 00 fc ff df 49 8d 94 24 70 01 00 00 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 52 05 00 00 48 8d 3d b3 27 56 0f 48 8b 75 18 <67> 48 0f b9 3a 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03
RSP: 0018:ffffc900006f8be0 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff110086ae14e
RDX: ffff88805ace7170 RSI: ffffffff8aabda00 RDI: ffffffff91255e40
RBP: ffff888043570a58 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000000 R12: ffff88805ace7000
R13: 0000000000000000 R14: ffffffff81cf3c20 R15: 0000000000000001
FS:  00007f8f2ce10780(0000) GS:ffff8880d60ee000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558b4813b000 CR3: 0000000022080000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000004
DR3: 0000000000000008 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x19a/0x610 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1794 [inline]
 __run_timers+0x570/0xb00 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1ea/0x9b0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:anon_vma_chain_alloc mm/rmap.c:142 [inline]
RIP: 0010:anon_vma_clone+0x2ba/0xcd0 mm/rmap.c:342
Code: 84 58 01 00 00 48 89 74 24 18 4c 89 7c 24 40 44 89 74 24 4c e8 57 51 a4 ff 48 8b 3d b0 cb 0e 19 be c0 0c 00 00 e8 36 16 09 00 <48> 89 c5 48 85 c0 0f 84 11 06 00 00 e8 35 51 a4 ff 49 8d 7d 08 48
RSP: 0018:ffffc900068df7a0 EFLAGS: 00000282
RAX: ffff88802607a1c0 RBX: ffff88802602b040 RCX: 0000000000000cc0
RDX: 0000000000000000 RSI: ffffffff8c400b00 RDI: ffffffff8e469938
RBP: 0000000000000001 R08: 00000000ffffffff R09: ffff88801d696100
R10: ffff88802607a1c0 R11: ffff88801bc81e00 R12: dffffc0000000000
R13: ffff88802edcecb0 R14: 0000000000000003 R15: ffff888037cfd400
 anon_vma_fork+0x1bb/0x6b0 mm/rmap.c:404
 dup_mmap+0x143e/0x21b0 mm/mmap.c:1803
 dup_mm kernel/fork.c:1538 [inline]
 copy_mm kernel/fork.c:1590 [inline]
 copy_process+0x4588/0x8030 kernel/fork.c:2288
 kernel_clone+0x176/0x9d0 kernel/fork.c:2747
 __do_sys_clone+0xd9/0x120 kernel/fork.c:2888
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8f2cee4636
Code: 89 df e8 6d e8 f6 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 52 89 c5 85 c0 75 31 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffd1c75df60 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffd1c75df68 RCX: 00007f8f2cee4636
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffd1c77e4b0 R08: 0000000000000000 R09: 0000000000000001
R10: 00007f8f2ce10a50 R11: 0000000000000246 R12: 00007ffd1c75e0a0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000558b27407ac0
 </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 70                	and    $0x70,%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 52 05 00 00    	jne    0x571
  1f:	48 8d 3d b3 27 56 0f 	lea    0xf5627b3(%rip),%rdi        # 0xf5627d9
  26:	48 8b 75 18          	mov    0x18(%rbp),%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df
  39:	48 89 ea             	mov    %rbp,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx