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ODEBUG: free active (active state 0) object: ffff8880787a5490 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: CPU: 0 PID: 9813 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 0 UID: 0 PID: 9813 Comm: syz.1.914 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Code: 4c 89 ff e8 87 e4 92 fd 4d 8b 0f 48 c7 c7 00 11 bf 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 3a 49 f0 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 37 3b ea 0a 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90000007a00 EFLAGS: 00010296
RAX: 246f65e43ad73d00 RBX: dffffc0000000000 RCX: ffff88802d1f3c80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba680 R12: ffffffff8a3924f0
R13: ffffffff8bbf1280 R14: ffff8880787a5490 R15: ffffffff8b6cf7a0
FS:  0000000000000000(0000) GS:ffff88812613b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f954cd156c0 CR3: 000000000dd38000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
 debug_check_no_obj_freed+0x3a2/0x470 lib/debugobjects.c:1129
 slab_free_hook mm/slub.c:2470 [inline]
 slab_free mm/slub.c:6630 [inline]
 kfree+0x115/0x6d0 mm/slub.c:6837
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x4cb/0x600 net/rose/rose_timer.c:183
 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1798 [inline]
 __run_timers kernel/time/timer.c:2372 [inline]
 __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384
 run_timer_base kernel/time/timer.c:2393 [inline]
 run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:unwind_next_frame+0x17c6/0x2390 arch/x86/kernel/unwind_orc.c:-1
Code: 00 00 4c 89 e8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 0e 0b 00 00 49 0f bf 04 24 48 01 c6 4c 89 f7 48 89 da e8 4c 0e 00 00 84 c0 <0f> 84 47 01 00 00 48 bd 00 00 00 00 00 fc ff df 48 8b 44 24 20 0f
RSP: 0018:ffffc90003076d78 EFLAGS: 00000202
RAX: 1ffff9200060ed01 RBX: ffffffff901a08ee RCX: 0000000000000001
RDX: ffffc90003076e88 RSI: dffffc0000000000 RDI: ffffc90003077980
RBP: dffffc0000000000 R08: ffffc90003077980 R09: ffffc90003076e98
R10: dffffc0000000000 R11: fffff5200060edd5 R12: ffffc90003077980
R13: ffffc90003076e98 R14: ffffc90003076e48 R15: 1ffffffff203411e
 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 save_stack+0xf5/0x1f0 mm/page_owner.c:156
 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:311
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 free_unref_folios+0xdb3/0x14f0 mm/page_alloc.c:2963
 folios_put_refs+0x584/0x670 mm/swap.c:1002
 folio_batch_release include/linux/pagevec.h:101 [inline]
 shmem_undo_range+0x49e/0x14b0 mm/shmem.c:1120
 shmem_truncate_range mm/shmem.c:1232 [inline]
 shmem_evict_inode+0x272/0xa70 mm/shmem.c:1360
 evict+0x504/0x9c0 fs/inode.c:810
 __dentry_kill+0x209/0x660 fs/dcache.c:669
 dput+0x19f/0x2b0 fs/dcache.c:911
 __fput+0x68e/0xa70 fs/file_table.c:476
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x6b5/0x2300 kernel/exit.c:966
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1107
 get_signal+0x1285/0x1340 kernel/signal.c:3034
 arch_do_signal_or_restart+0xa0/0x790 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x72/0x130 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc1bdd8f6c9
Code: Unable to access opcode bytes at 0x7fc1bdd8f69f.
RSP: 002b:00007fc1becdc038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: 0000000000010106 RBX: 00007fc1bdfe6090 RCX: 00007fc1bdd8f6c9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007fc1bde11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc1bdfe6128 R14: 00007fc1bdfe6090 R15: 00007ffd4c4624b8
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	4c 89 e8             	mov    %r13,%rax
   5:	48 c1 e8 03          	shr    $0x3,%rax
   9:	0f b6 04 28          	movzbl (%rax,%rbp,1),%eax
   d:	84 c0                	test   %al,%al
   f:	0f 85 0e 0b 00 00    	jne    0xb23
  15:	49 0f bf 04 24       	movswq (%r12),%rax
  1a:	48 01 c6             	add    %rax,%rsi
  1d:	4c 89 f7             	mov    %r14,%rdi
  20:	48 89 da             	mov    %rbx,%rdx
  23:	e8 4c 0e 00 00       	call   0xe74
  28:	84 c0                	test   %al,%al
* 2a:	0f 84 47 01 00 00    	je     0x177 <-- trapping instruction
  30:	48 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbp
  37:	fc ff df
  3a:	48 8b 44 24 20       	mov    0x20(%rsp),%rax
  3f:	0f                   	.byte 0xf