greybus greybus1: 0/0:0: synchronous operation id 0x0002 of type 0x10 failed: -71 ------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff8881357bc258 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/u8:3/18307 Modules linked in: CPU: 1 UID: 0 PID: 18307 Comm: kworker/u8:3 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 Workqueue: greybus1:svc gb_svc_process_deferred_request 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 68 43 31 08 41 56 48 8b 14 ed c0 75 d3 87 4c 89 e6 <67> 48 0f b9 3a 58 83 05 42 8c 2c 08 01 48 83 c4 18 5b 5d 41 5c 41 RSP: 0018:ffffc90001987808 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffc900019878f0 RCX: 0000000000000000 RDX: ffffffff87d37500 RSI: ffffffff87d370a0 RDI: ffffffff8b1d17e0 RBP: 0000000000000003 R08: ffff8881357bc258 R09: ffffffff87ad61a0 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff87d370a0 R13: ffffffff87ad61e0 R14: ffffffff862a3230 R15: ffffc90001987908 FS: 0000000000000000(0000) GS:ffff888268469000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff17ef52000 CR3: 0000000130ad6000 CR4: 00000000003506f0 Call Trace: __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:2711 [inline] slab_free mm/slub.c:6630 [inline] kmem_cache_free+0x398/0x650 mm/slub.c:6757 _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_intf_set_power_mode+0x316/0x3d0 drivers/greybus/svc.c:584 gb_svc_process_hello_deferred drivers/greybus/svc.c:936 [inline] gb_svc_process_deferred_request+0x6dd/0x1010 drivers/greybus/svc.c:1102 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3495 process_scheduled_works kernel/workqueue.c:3578 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3659 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 ---------------- 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 68 43 31 08 lea 0x8314368(%rip),%rdi # 0x8314385 1d: 41 56 push %r14 1f: 48 8b 14 ed c0 75 d3 mov -0x782c8a40(,%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 42 8c 2c 08 01 addl $0x1,0x82c8c42(%rip) # 0x82c8c79 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