------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2436 at __queue_work+0xe18/0x16f0 kernel/workqueue.c:2435, CPU#3: dhcpcd-run-hook/10575
Modules linked in:
CPU: 3 UID: 0 PID: 10575 Comm: dhcpcd-run-hook 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+0xe1c/0x16f0 kernel/workqueue.c:2435
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 c5 08 00 00 48 8d 3d 48 f6 9a 10 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:ffffc900006f8b68 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff1100c92194e
RDX: ffff888027da2178 RSI: ffffffff8aded1d0 RDI: ffffffff926d9170
RBP: ffff88806490ca58 R08: 0000000000000000 R09: 0000000000000100
R10: ffffffff926aa95f R11: 0000000000000001 R12: ffff888027da2000
R13: 0000000000000000 R14: 1ffff920000df18e R15: ffffffff81d2a410
FS:  0000000000000000(0000) GS:ffff8880d4775000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6cdd456000 CR3: 00000000288c7000 CR4: 0000000000352ef0
Call Trace:
 <IRQ>
 call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1749
 expire_timers kernel/time/timer.c:1795 [inline]
 __run_timers+0x570/0xb00 kernel/time/timer.c:2375
 __run_timer_base kernel/time/timer.c:2387 [inline]
 __run_timer_base kernel/time/timer.c:2379 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2396
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2406
 handle_softirqs+0x216/0xa20 kernel/softirq.c:669
 __do_softirq kernel/softirq.c:703 [inline]
 invoke_softirq kernel/softirq.c:542 [inline]
 __irq_exit_rcu+0x178/0x220 kernel/softirq.c:786
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:809
 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:mt_locked lib/maple_tree.c:669 [inline]
RIP: 0010:mt_slot lib/maple_tree.c:676 [inline]
RIP: 0010:mas_slot lib/maple_tree.c:709 [inline]
RIP: 0010:mas_get_slot lib/maple_tree.c:6527 [inline]
RIP: 0010:mas_validate_gaps lib/maple_tree.c:6795 [inline]
RIP: 0010:mt_validate+0x1fff/0x3420 lib/maple_tree.c:7071
Code: 00 00 0f 85 ea 05 00 00 e8 5e 08 25 f6 48 8b 54 24 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 a5 13 00 00 <48> 8b 44 24 08 4c 8b 28 4d 85 ed 74 42 e8 2f 08 25 f6 be ff ff ff
RSP: 0018:ffffc90004487788 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 1ffff11003a9a008 RSI: ffffffff8be97042 RDI: 0000000000000005
RBP: 00007f6cdd498fff R08: 0000000000000300 R09: 0000000000000300
R10: 0000000000000003 R11: 0000000000000001 R12: ffff88805c98af00
R13: 0000000000000300 R14: dffffc0000000000 R15: 0000000000000000
 validate_mm+0xab/0x780 mm/vma.c:686
 mmap_region+0x40b/0x6d0 mm/vma.c:3179
 do_mmap+0x12c7/0x1c30 mm/mmap.c:573
 vm_mmap_pgoff+0x283/0x490 mm/util.c:581
 ksys_mmap_pgoff+0x3cb/0x610 mm/mmap.c:619
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:96 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:89
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6cdd77f242
Code: 08 00 04 00 00 eb e2 90 41 f7 c1 ff 0f 00 00 75 27 55 89 cd 53 48 89 fb 48 85 ff 74 33 41 89 ea 48 89 df b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5e 5b 5d c3 0f 1f 00 c7 05 46 40 01 00 16 00
RSP: 002b:00007fffeed30ca8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f6cdd44e000 RCX: 00007f6cdd77f242
RDX: 0000000000000005 RSI: 0000000000003000 RDI: 00007f6cdd44e000
RBP: 0000000000000812 R08: 0000000000000003 R09: 0000000000002000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007fffeed30cf8
R13: 00007f6cdd4560c0 R14: 00007fffeed310e0 R15: 00000ffffdda6198
 </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 c5 08 00 00    	jne    0x8e4
  1f:	48 8d 3d 48 f6 9a 10 	lea    0x109af648(%rip),%rdi        # 0x109af66e
  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