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ODEBUG: free active (active state 0) object: ffff8880326c5c90 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: CPU: 0 PID: 23126 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 0 UID: 0 PID: 23126 Comm: modprobe Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Code: 4c 89 ff e8 07 e0 92 fd 4d 8b 0f 48 c7 c7 80 12 bf 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 1a 3a f0 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 f7 3c ea 0a 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90000007a00 EFLAGS: 00010296
RAX: 3b505db8f4ed9e00 RBX: dffffc0000000000 RCX: ffff8880110b9e40
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba684 R12: ffffffff8a3950b0
R13: ffffffff8bbf1400 R14: ffff8880326c5c90 R15: ffffffff8b6cf7e0
FS:  0000000000000000(0000) GS:ffff888126139000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb04ee1e9c CR3: 000000004814c000 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:2474 [inline]
 slab_free mm/slub.c:6642 [inline]
 kfree+0x115/0x6d0 mm/slub.c:6849
 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:constant_test_bit arch/x86/include/asm/bitops.h:202 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:232 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:folio_test_referenced include/linux/page-flags.h:553 [inline]
RIP: 0010:lru_gen_inc_refs mm/swap.c:397 [inline]
RIP: 0010:folio_mark_accessed+0x1d2/0x8b0 mm/swap.c:460
Code: 00 4d 8b 24 24 4c 89 e6 48 83 e6 01 31 ff e8 75 bf c3 ff 49 83 e4 01 0f 85 75 03 00 00 48 89 df be 08 00 00 00 e8 ae 7e 29 00 <43> 80 3c 2e 00 74 08 48 89 df e8 2f 7c 29 00 4c 8b 23 4c 89 e6 48
RSP: 0018:ffffc900121a7500 EFLAGS: 00000256
RAX: ffffffff81fc4901 RBX: ffffea000036f740 RCX: ffffffff81fc4942
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea000036f740
RBP: ffffc900121a75d0 R08: ffffea000036f747 R09: 1ffffd400006dee8
R10: dffffc0000000000 R11: fffff9400006dee9 R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffffd400006dee8 R15: 1ffff92002434ea4
 zap_present_folio_ptes mm/memory.c:1637 [inline]
 zap_present_ptes mm/memory.c:1710 [inline]
 do_zap_pte_range mm/memory.c:1811 [inline]
 zap_pte_range mm/memory.c:1855 [inline]
 zap_pmd_range mm/memory.c:1947 [inline]
 zap_pud_range mm/memory.c:1976 [inline]
 zap_p4d_range mm/memory.c:1997 [inline]
 unmap_page_range+0x1d53/0x4370 mm/memory.c:2018
 unmap_single_vma mm/memory.c:2061 [inline]
 unmap_vmas+0x399/0x580 mm/memory.c:2105
 exit_mmap+0x240/0xb40 mm/mmap.c:1280
 __mmput+0x118/0x430 kernel/fork.c:1133
 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
 __do_sys_exit_group kernel/exit.c:1118 [inline]
 __se_sys_exit_group kernel/exit.c:1116 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1116
 x64_sys_call+0x21f7/0x2200 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbb050406c5
Code: Unable to access opcode bytes at 0x7fbb0504069b.
RSP: 002b:00007ffd2acccf98 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fbb05141fe8 RCX: 00007fbb050406c5
RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000001
RBP: 0000000000000001 R08: 00007ffd2acccf28 R09: 0000000000000000
R10: 00007ffd2acccdc0 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fbb05140680 R15: 00007fbb05142000
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 4d 8b             	add    %cl,-0x75(%rbp)
   3:	24 24                	and    $0x24,%al
   5:	4c 89 e6             	mov    %r12,%rsi
   8:	48 83 e6 01          	and    $0x1,%rsi
   c:	31 ff                	xor    %edi,%edi
   e:	e8 75 bf c3 ff       	call   0xffc3bf88
  13:	49 83 e4 01          	and    $0x1,%r12
  17:	0f 85 75 03 00 00    	jne    0x392
  1d:	48 89 df             	mov    %rbx,%rdi
  20:	be 08 00 00 00       	mov    $0x8,%esi
  25:	e8 ae 7e 29 00       	call   0x297ed8
* 2a:	43 80 3c 2e 00       	cmpb   $0x0,(%r14,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 2f 7c 29 00       	call   0x297c68
  39:	4c 8b 23             	mov    (%rbx),%r12
  3c:	4c 89 e6             	mov    %r12,%rsi
  3f:	48                   	rex.W