------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff888075068278 object type: timer_list hint: br_ip6_multicast_port_query_expired+0x0/0x20 net/bridge/br_private.h:1293
WARNING: lib/debugobjects.c:629 at debug_print_object+0x18e/0x2a0 lib/debugobjects.c:629, CPU#1: syz.8.3120/14685
Modules linked in:
CPU: 1 UID: 0 PID: 14685 Comm: syz.8.3120 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:debug_print_object+0x19b/0x2a0 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 f2 16 e0 0b 41 56 48 8b 14 dd c0 4b 1c 8c 4c 89 e6 <67> 48 0f b9 3a 58 83 05 6c b4 d5 0b 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0018:ffffc90000a08be8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: ffffffff8c1c4b00 RSI: ffffffff8c1c4720 RDI: ffffffff90e26560
RBP: 0000000000000001 R08: ffff888075068278 R09: ffffffff8bb2c760
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c1c4720
R13: ffffffff8bb2c7a0 R14: ffffffff8a6520c0 R15: ffffc90000a08ce8
FS:  000055557b865500(0000) GS:ffff88812446d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa203017dac CR3: 0000000036488000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __debug_check_no_obj_freed lib/debugobjects.c:1116 [inline]
 debug_check_no_obj_freed+0x4da/0x630 lib/debugobjects.c:1146
 slab_free_hook mm/slub.c:2620 [inline]
 slab_free mm/slub.c:6250 [inline]
 kfree+0x3d0/0x6c0 mm/slub.c:6565
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1f7/0x640 lib/kobject.c:737
 rcu_do_batch kernel/rcu/tree.c:2617 [inline]
 rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
 handle_softirqs+0x1ea/0xa00 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
 sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1061
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:finish_task_switch.isra.0+0x2d3/0x1010 kernel/sched/core.c:5245
Code: 2f 0a 00 00 41 c7 87 e0 0d 00 00 00 00 00 00 0f 1f 44 00 00 49 8d 7f 48 e8 fa 79 b8 09 e8 25 9b 3b 00 fb 48 8d bb b0 16 00 00 <48> b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84
RSP: 0018:ffffc90004127a58 EFLAGS: 00000202
RAX: 000000000002d423 RBX: ffff888055178000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8df22414 RDI: ffff8880551796b0
RBP: ffffc90004127ab0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff81d55462 R12: ffff88801e2ba500
R13: 0000000000000000 R14: ffffffff90d802e4 R15: ffff8880b853b240
 context_switch kernel/sched/core.c:5391 [inline]
 __schedule+0x129d/0x67a0 kernel/sched/core.c:7189
 __schedule_loop kernel/sched/core.c:7268 [inline]
 schedule+0xdd/0x390 kernel/sched/core.c:7283
 do_nanosleep+0x158/0x570 kernel/time/hrtimer.c:2293
 hrtimer_nanosleep+0x14f/0x350 kernel/time/hrtimer.c:2339
 common_nsleep+0xa1/0xd0 kernel/time/posix-timers.c:1345
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1391 [inline]
 __se_sys_clock_nanosleep kernel/time/posix-timers.c:1368 [inline]
 __x64_sys_clock_nanosleep+0x336/0x480 kernel/time/posix-timers.c:1368
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f86f2b5d68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffe6a2858a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 000055557b865500 RCX: 00007f86f2b5d68e
RDX: 00007ffe6a285900 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f86f2e17da0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000005797b
R13: 00007f86f2e15fac R14: 0000000000057690 R15: 00007ffe6a285a30
 </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 f2 16 e0 0b 	lea    0xbe016f2(%rip),%rdi        # 0xbe0170f
  1d:	41 56                	push   %r14
  1f:	48 8b 14 dd c0 4b 1c 	mov    -0x73e3b440(,%rbx,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 6c b4 d5 0b 01 	addl   $0x1,0xbd5b46c(%rip)        # 0xbd5b4a3
  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