------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff88804b465090 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: lib/debugobjects.c:615 at debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612, CPU#1: syz.1.1380/10009
Modules linked in:
CPU: 1 UID: 0 PID: 10009 Comm: syz.1.1380 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Code: 4c 89 ff e8 f7 ce 47 fd 4d 8b 0f 48 c7 c7 a0 0d 05 8c 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 1a dc a6 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 87 ab 08 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90000a08a00 EFLAGS: 00010296
RAX: 48a53e9ff9c87300 RBX: dffffc0000000000 RCX: ffff888026fe5ac0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffffffff8fe53a37 R09: 1ffffffff1fca746
R10: dffffc0000000000 R11: fffffbfff1fca747 R12: ffffffff8a7e3430
R13: ffffffff8c050f20 R14: ffff88804b465090 R15: ffffffff8bacdfe0
FS:  0000000000000000(0000) GS:ffff8881258a7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34115ff8 CR3: 00000000618c2000 CR4: 00000000003526f0
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:2405 [inline]
 slab_free mm/slub.c:6181 [inline]
 kfree+0x117/0x6d0 mm/slub.c:6389
 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:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 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:folios_put_refs+0x162/0x670 mm/swap.c:-1
Code: 4f 8b 2c fc 48 83 7c 24 38 00 0f 84 d3 00 00 00 e8 33 5a c4 ff 48 8b 44 24 28 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 3d 03 00 00 <48> 8b 44 24 38 46 8b 64 b8 fc 4d 85 ed 0f 84 ba 00 00 00 e8 06 5a
RSP: 0018:ffffc9000b0273c0 EFLAGS: 00000297
RAX: 0000000000000004 RBX: dffffc0000000000 RCX: ffffc9000b027603
RDX: 0000000000000000 RSI: 000000000000001e RDI: 000000000000001f
RBP: ffffc9000b0274b0 R08: ffffea0001d72177 R09: 1ffffd40003ae42e
R10: dffffc0000000000 R11: fffff940003ae42f R12: ffffc9000b027520
R13: ffffea0001d72180 R14: 000000000000001e R15: 000000000000001f
 free_pages_and_swap_cache+0x277/0x520 mm/swap_state.c:355
 __tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline]
 tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:397 [inline]
 tlb_flush_mmu+0x3a0/0x680 mm/mmu_gather.c:404
 tlb_finish_mmu+0xc3/0x1d0 mm/mmu_gather.c:497
 exit_mmap+0x444/0xb40 mm/mmap.c:1293
 __mmput+0x118/0x430 kernel/fork.c:1148
 exit_mm+0x1da/0x2c0 kernel/exit.c:582
 do_exit+0x648/0x2300 kernel/exit.c:954
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1107
 get_signal+0x1286/0x1340 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x75/0x130 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: 0033:0x7f9f4c58eba9
Code: Unable to access opcode bytes at 0x7f9f4c58eb7f.
RSP: 002b:00007f9f4d4c40e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f9f4c7d5fa8 RCX: 00007f9f4c58eba9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f9f4c7d5fa8
RBP: 00007f9f4c7d5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9f4c7d6038 R14: 00007ffce23d63b0 R15: 00007ffce23d6498
 </TASK>
----------------
Code disassembly (best guess):
   0:	4f 8b 2c fc          	mov    (%r12,%r15,8),%r13
   4:	48 83 7c 24 38 00    	cmpq   $0x0,0x38(%rsp)
   a:	0f 84 d3 00 00 00    	je     0xe3
  10:	e8 33 5a c4 ff       	call   0xffc45a48
  15:	48 8b 44 24 28       	mov    0x28(%rsp),%rax
  1a:	48 c1 e8 03          	shr    $0x3,%rax
  1e:	0f b6 04 18          	movzbl (%rax,%rbx,1),%eax
  22:	84 c0                	test   %al,%al
  24:	0f 85 3d 03 00 00    	jne    0x367
* 2a:	48 8b 44 24 38       	mov    0x38(%rsp),%rax <-- trapping instruction
  2f:	46 8b 64 b8 fc       	mov    -0x4(%rax,%r15,4),%r12d
  34:	4d 85 ed             	test   %r13,%r13
  37:	0f 84 ba 00 00 00    	je     0xf7
  3d:	e8                   	.byte 0xe8
  3e:	06                   	(bad)
  3f:	5a                   	pop    %rdx