------------[ cut here ]------------
ODEBUG: init active (active state 0) object: ffff88806a123700 object type: timer_list hint: mce_timer_fn+0x0/0x2e0 arch/x86/kernel/cpu/mce/core.c:2717
WARNING: lib/debugobjects.c:629 at debug_print_object+0x198/0x2b0 lib/debugobjects.c:629, CPU#1: swapper/1/0
Modules linked in:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 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:debug_print_object+0x1a5/0x2b0 lib/debugobjects.c:629
Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4f 48 8d 3d 78 ba 30 0d 41 56 48 8b 14 ed 40 65 83 8c 4c 89 e6 <67> 48 0f b9 3a 58 83 05 e2 1e 26 0d 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0000:ffffc90000177c78 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: ffffc90000177d20 RCX: 0000000000000000
RDX: ffffffff8c836480 RSI: ffffffff8c835fe0 RDI: ffffffff927563d0
RBP: 0000000000000003 R08: ffff88806a123700 R09: ffffffff8c132060
R10: ffffffff9ce6f9bb R11: 0000000000000000 R12: ffffffff8c835fe0
R13: ffffffff8c1320a0 R14: ffffffff81b484f0 R15: ffffc90000177d38
FS:  0000000000000000(0000) GS:ffff8880d457d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000fd96000 CR4: 0000000000350eb0
Call Trace:
 <TASK>
 __debug_object_init+0x229/0x3d0 lib/debugobjects.c:818
 debug_timer_init kernel/time/timer.c:789 [inline]
 debug_init kernel/time/timer.c:837 [inline]
 timer_init_key+0x35/0x310 kernel/time/timer.c:881
 __mcheck_cpu_setup_timer arch/x86/kernel/cpu/mce/core.c:2087 [inline]
 mcheck_cpu_init+0x273/0x4d0 arch/x86/kernel/cpu/mce/core.c:2262
 identify_cpu+0xc45/0x18e0 arch/x86/kernel/cpu/common.c:2123
 identify_secondary_cpu+0x180/0x270 arch/x86/kernel/cpu/common.c:2185
 ap_starting arch/x86/kernel/smpboot.c:190 [inline]
 start_secondary+0xcf/0x2d0 arch/x86/kernel/smpboot.c:280
 common_startup_64+0x13e/0x158
 </TASK>
----------------
Code disassembly (best guess):
   0:	b8 00 00 00 00       	mov    $0x0,%eax
   5:	00 fc                	add    %bh,%ah
   7:	ff                   	lcall  (bad)
   8:	df 48 89             	fisttps -0x77(%rax)
   b:	fa                   	cli
   c:	48 c1 ea 03          	shr    $0x3,%rdx
  10:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  14:	75 4f                	jne    0x65
  16:	48 8d 3d 78 ba 30 0d 	lea    0xd30ba78(%rip),%rdi        # 0xd30ba95
  1d:	41 56                	push   %r14
  1f:	48 8b 14 ed 40 65 83 	mov    -0x737c9ac0(,%rbp,8),%rdx
  26:	8c
  27:	4c 89 e6             	mov    %r12,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	58                   	pop    %rax
  30:	83 05 e2 1e 26 0d 01 	addl   $0x1,0xd261ee2(%rip)        # 0xd261f19
  37:	48 83 c4 18          	add    $0x18,%rsp
  3b:	5b                   	pop    %rbx
  3c:	5d                   	pop    %rbp
  3d:	41 5c                	pop    %r12
  3f:	41                   	rex.B