greybus greybus1: 0/0:0: synchronous operation id 0x0002 of type 0x14 failed: -71
------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff8881254617c8 object type: timer_list hint: gb_operation_timeout+0x0/0xe0 drivers/greybus/operation.c:1211
WARNING: lib/debugobjects.c:629 at debug_print_object+0x198/0x2b0 lib/debugobjects.c:629, CPU#1: kworker/u8:3/47
Modules linked in:
CPU: 1 UID: 0 PID: 47 Comm: kworker/u8:3 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: greybus1:0 gb_operation_work
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 f8 be 37 08 41 56 48 8b 14 ed 40 cf d2 87 4c 89 e6 <67> 48 0f b9 3a 58 83 05 d2 16 33 08 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0018:ffffc90000527868 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc90000527950 RCX: 0000000000000000
RDX: ffffffff87d2ce80 RSI: ffffffff87d2ca20 RDI: ffffffff8b1aa8a0
RBP: 0000000000000003 R08: ffff8881254617c8 R09: ffffffff87ad4ea0
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff87d2ca20
R13: ffffffff87ad4ee0 R14: ffffffff861dd960 R15: ffffc90000527968
FS:  0000000000000000(0000) GS:ffff8882684d5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9506bd1000 CR3: 000000012e618000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __debug_check_no_obj_freed lib/debugobjects.c:1171 [inline]
 debug_check_no_obj_freed+0x4da/0x630 lib/debugobjects.c:1201
 slab_free_hook mm/slub.c:2679 [inline]
 slab_free mm/slub.c:6509 [inline]
 kmem_cache_free+0x398/0x650 mm/slub.c:6636
 _gb_operation_destroy drivers/greybus/operation.c:682 [inline]
 kref_put include/linux/kref.h:65 [inline]
 gb_operation_put+0x1b2/0x3c0 drivers/greybus/operation.c:694
 gb_operation_sync_timeout+0x193/0x220 drivers/greybus/operation.c:1172
 gb_operation_sync include/linux/greybus/operation.h:203 [inline]
 gb_svc_pwrmon_rail_count_get drivers/greybus/svc.c:137 [inline]
 gb_svc_pwrmon_debugfs_init drivers/greybus/svc.c:772 [inline]
 gb_svc_debugfs_init drivers/greybus/svc.c:827 [inline]
 gb_svc_hello drivers/greybus/svc.c:875 [inline]
 gb_svc_request_handler+0x515/0x1250 drivers/greybus/svc.c:1276
 gb_operation_request_handle drivers/greybus/operation.c:243 [inline]
 gb_operation_work+0xb7/0x990 drivers/greybus/operation.c:280
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
 process_scheduled_works kernel/workqueue.c:3479 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x69f/0xc90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </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 f8 be 37 08 	lea    0x837bef8(%rip),%rdi        # 0x837bf15
  1d:	41 56                	push   %r14
  1f:	48 8b 14 ed 40 cf d2 	mov    -0x782d30c0(,%rbp,8),%rdx
  26:	87
  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 d2 16 33 08 01 	addl   $0x1,0x83316d2(%rip)        # 0x8331709
  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