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ODEBUG: free active (active state 0) object: ffff888078562c90 object type: timer_list hint: rose_t0timer_expiry+0x0/0x150 include/linux/skbuff.h:2880
WARNING: CPU: 0 PID: 13384 at lib/debugobjects.c:612 debug_print_object+0x1a2/0x2b0 lib/debugobjects.c:612
Modules linked in:
CPU: 0 UID: 0 PID: 13384 Comm: modprobe Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:debug_print_object+0x1a2/0x2b0 lib/debugobjects.c:612
Code: fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 54 41 56 48 8b 14 dd 60 41 16 8c 4c 89 e6 48 c7 c7 e0 35 16 8c e8 cf 43 91 fc 90 <0f> 0b 90 90 58 83 05 46 ce c2 0b 01 48 83 c4 18 5b 5d 41 5c 41 5d
RSP: 0018:ffffc90000007a28 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff817a3358
RDX: ffff888030610000 RSI: ffffffff817a3365 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8c163c80
R13: ffffffff8bafedc0 R14: ffffffff8a7fa4f0 R15: ffffc90000007b28
FS:  0000000000000000(0000) GS:ffff8881246b9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000e26030 CR3: 000000004bacf000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
 debug_check_no_obj_freed+0x4b7/0x600 lib/debugobjects.c:1129
 slab_free_hook mm/slub.c:2348 [inline]
 slab_free mm/slub.c:4680 [inline]
 kfree+0x28f/0x4d0 mm/slub.c:4879
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x53f/0x630 net/rose/rose_timer.c:183
 call_timer_fn+0x19a/0x620 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1798 [inline]
 __run_timers+0x6ef/0x960 kernel/time/timer.c:2372
 __run_timer_base kernel/time/timer.c:2384 [inline]
 __run_timer_base kernel/time/timer.c:2376 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2393
 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2403
 handle_softirqs+0x219/0x8e0 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5872
Code: a6 3e 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 22 c1 13 0f 0f 82 74 02 00 00 8b 35 ba f2 13 0f 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 79 a6 3e 12 0f 85 c7 02 00 00 48 83 c4
RSP: 0018:ffffc90021427730 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e5c1260 RCX: 000000000b56288e
RDX: 0000000000000000 RSI: ffffffff8de299d8 RDI: ffffffff8c163080
RBP: 0000000000000002 R08: ea6efae162285bd7 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:841 [inline]
 class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
 unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479
 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:548
 slab_free_hook mm/slub.c:2378 [inline]
 slab_free mm/slub.c:4680 [inline]
 kmem_cache_free+0x15a/0x4d0 mm/slub.c:4782
 exit_mmap+0x511/0xb90 mm/mmap.c:1305
 __mmput+0x12a/0x410 kernel/fork.c:1130
 mmput+0x62/0x70 kernel/fork.c:1152
 exit_mm kernel/exit.c:582 [inline]
 do_exit+0x7c7/0x2bf0 kernel/exit.c:949
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1102
 __do_sys_exit_group kernel/exit.c:1113 [inline]
 __se_sys_exit_group kernel/exit.c:1111 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1111
 x64_sys_call+0x14fa/0x1720 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff3c05156c5
Code: Unable to access opcode bytes at 0x7ff3c051569b.
RSP: 002b:00007ffd5d398388 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007ff3c0616fe8 RCX: 00007ff3c05156c5
RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000001
RBP: 0000000000000001 R08: 00007ffd5d398318 R09: 0000000000000000
R10: 00007ffd5d3981b0 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ff3c0615680 R15: 00007ff3c0617000
 </TASK>
----------------
Code disassembly (best guess):
   0:	a6                   	cmpsb  %es:(%rdi),%ds:(%rsi)
   1:	3e 12 83 f8 07 0f 87 	ds adc -0x78f0f808(%rbx),%al
   8:	bc 02 00 00 89       	mov    $0x89000002,%esp
   d:	c0 48 0f a3          	rorb   $0xa3,0xf(%rax)
  11:	05 22 c1 13 0f       	add    $0xf13c122,%eax
  16:	0f 82 74 02 00 00    	jb     0x290
  1c:	8b 35 ba f2 13 0f    	mov    0xf13f2ba(%rip),%esi        # 0xf13f2dc
  22:	85 f6                	test   %esi,%esi
  24:	0f 85 8d 00 00 00    	jne    0xb7
* 2a:	48 8b 44 24 30       	mov    0x30(%rsp),%rax <-- trapping instruction
  2f:	65 48 2b 05 79 a6 3e 	sub    %gs:0x123ea679(%rip),%rax        # 0x123ea6b0
  36:	12
  37:	0f 85 c7 02 00 00    	jne    0x304
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4