------------[ cut here ]------------ ODEBUG: deactivate not available (active state 0) object type: timer_list hint: garp_join_timer+0x0/0x80 net/802/garp.c:391 WARNING: CPU: 0 PID: 10810 at lib/debugobjects.c:485 debug_print_object+0x168/0x250 lib/debugobjects.c:485 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 10810 Comm: syz-executor.0 Not tainted 5.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x3e kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:debug_print_object+0x168/0x250 lib/debugobjects.c:485 Code: dd 00 e7 91 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd 00 e7 91 88 48 c7 c7 60 dc 91 88 e8 07 6e 9f fd <0f> 0b 83 05 03 6c ff 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3 RSP: 0018:ffffc90000007ca0 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff815ebe46 RDI: fffff52000000f86 RBP: ffffc90000007ce0 R08: ffff88809a87e340 R09: ffffed1015d045c9 R10: ffffed1015d045c8 R11: ffff8880ae822e43 R12: 0000000000000001 R13: ffffffff89bb6a00 R14: ffffffff816497c0 R15: ffff88808df98610 debug_object_deactivate lib/debugobjects.c:738 [inline] debug_object_deactivate+0x237/0x320 lib/debugobjects.c:698 debug_timer_deactivate kernel/time/timer.c:719 [inline] debug_deactivate kernel/time/timer.c:768 [inline] detach_timer kernel/time/timer.c:813 [inline] expire_timers kernel/time/timer.c:1438 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x520/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1146 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline] RIP: 0010:lock_acquire+0x20b/0x410 kernel/locking/lockdep.c:4487 Code: 94 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 d3 01 00 00 48 83 3d b9 71 58 08 00 0f 84 53 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0018:ffffc90000f57920 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff1367637 RBX: ffff88809a87e340 RCX: ffffffff815ae510 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000282 RBP: ffffc90000f57968 R08: 1ffffffff16a336c R09: fffffbfff16a336d R10: ffff88809a87ec50 R11: ffff88809a87e340 R12: ffffffff89bac340 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 rcu_lock_acquire include/linux/rcupdate.h:208 [inline] rcu_read_lock include/linux/rcupdate.h:601 [inline] percpu_ref_put_many include/linux/percpu-refcount.h:304 [inline] percpu_ref_put include/linux/percpu-refcount.h:325 [inline] memcg_kmem_put_cache+0x5c/0x1a0 mm/memcontrol.c:2820 slab_post_alloc_hook mm/slab.h:591 [inline] slab_alloc mm/slab.c:3320 [inline] kmem_cache_alloc+0x2c2/0x710 mm/slab.c:3484 vm_area_dup+0x21/0x170 kernel/fork.c:359 dup_mmap kernel/fork.c:544 [inline] dup_mm+0x549/0x1430 kernel/fork.c:1360 copy_mm kernel/fork.c:1416 [inline] copy_process+0x2987/0x7290 kernel/fork.c:2081 _do_fork+0x146/0x1090 kernel/fork.c:2430 __do_sys_clone kernel/fork.c:2585 [inline] __se_sys_clone kernel/fork.c:2566 [inline] __x64_sys_clone+0x19a/0x260 kernel/fork.c:2566 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45aa4a Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 RSP: 002b:00007ffe1f711ef0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffe1f711ef0 RCX: 000000000045aa4a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffe1f711f30 R08: 0000000000000001 R09: 0000000002881940 R10: 0000000002881c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffe1f711f80 ======================================================