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ODEBUG: free active (active state 0) object: ffff8880568f7c90 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.3.916/10303
Modules linked in:
CPU: 1 UID: 0 PID: 10303 Comm: syz.3.916 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 e7 d9 8b fd 4d 8b 0f 48 c7 c7 80 83 c0 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 4a 46 e9 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 d7 2d 04 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90000a08a00 EFLAGS: 00010296
RAX: 0630be671972bb00 RBX: dffffc0000000000 RCX: ffff88802d480000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa650 R12: ffffffff8a3f2bb0
R13: ffffffff8bc08500 R14: ffff8880568f7c90 R15: ffffffff8b6cf600
FS:  00007f33d26a36c0(0000) GS:ffff888125e0b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3944f2 CR3: 0000000048bd6000 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:2446 [inline]
 slab_free mm/slub.c:6574 [inline]
 kfree+0x115/0x6d0 mm/slub.c:6781
 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:check_preemption_disabled+0x40/0x120 lib/smp_processor_id.c:53
Code: 08 65 8b 05 e6 e4 44 07 65 8b 0d db e4 44 07 f7 c1 ff ff ff 7f 74 23 65 48 8b 0d bb e4 44 07 48 3b 4c 24 08 0f 85 cc 00 00 00 <48> 83 c4 10 5b 41 5e 41 5f 5d c3 cc cc cc cc cc 48 c7 04 24 00 00
RSP: 0018:ffffc9000214f508 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffffff81f875bc RCX: 0630be671972bb00
RDX: ffffc9000ca61000 RSI: ffffffff8bc079c0 RDI: ffffffff8bc07980
RBP: 0000000000000001 R08: ffffea0001377337 R09: 1ffffd400026ee66
R10: dffffc0000000000 R11: fffff9400026ee67 R12: dffffc0000000000
R13: ffffffff81f875bc R14: ffffffff8e13d2e0 R15: 0000000000000003
 rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
 rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:751
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0x4b/0x3e0 kernel/locking/lockdep.c:5879
 rcu_lock_release include/linux/rcupdate.h:341 [inline]
 rcu_read_unlock include/linux/rcupdate.h:897 [inline]
 page_ref_add_unless include/linux/page_ref.h:239 [inline]
 folio_ref_add_unless include/linux/page_ref.h:248 [inline]
 folio_try_get+0x1d1/0x340 include/linux/page_ref.h:264
 next_uptodate_folio+0xcb/0x5d0 mm/filemap.c:3649
 filemap_map_pages+0x11ea/0x1c60 mm/filemap.c:3856
 do_fault_around mm/memory.c:5656 [inline]
 do_read_fault mm/memory.c:5689 [inline]
 do_fault mm/memory.c:5832 [inline]
 do_pte_missing mm/memory.c:4361 [inline]
 handle_pte_fault mm/memory.c:6177 [inline]
 __handle_mm_fault+0x347e/0x5400 mm/memory.c:6318
 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6487
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0x165c/0x2a00 mm/gup.c:1428
 populate_vma_page_range+0x29f/0x3a0 mm/gup.c:1860
 __mm_populate+0x24c/0x380 mm/gup.c:1963
 mm_populate include/linux/mm.h:3471 [inline]
 vm_mmap_pgoff+0x387/0x4d0 mm/util.c:586
 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: 0033:0x7f33d178eec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f33d26a3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f33d19e5fa0 RCX: 00007f33d178eec9
RDX: b635773f06ebbeef RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f33d1811f91 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f33d19e6038 R14: 00007f33d19e5fa0 R15: 00007ffe124adff8
 </TASK>
----------------
Code disassembly (best guess):
   0:	08 65 8b             	or     %ah,-0x75(%rbp)
   3:	05 e6 e4 44 07       	add    $0x744e4e6,%eax
   8:	65 8b 0d db e4 44 07 	mov    %gs:0x744e4db(%rip),%ecx        # 0x744e4ea
   f:	f7 c1 ff ff ff 7f    	test   $0x7fffffff,%ecx
  15:	74 23                	je     0x3a
  17:	65 48 8b 0d bb e4 44 	mov    %gs:0x744e4bb(%rip),%rcx        # 0x744e4da
  1e:	07
  1f:	48 3b 4c 24 08       	cmp    0x8(%rsp),%rcx
  24:	0f 85 cc 00 00 00    	jne    0xf6
* 2a:	48 83 c4 10          	add    $0x10,%rsp <-- trapping instruction
  2e:	5b                   	pop    %rbx
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	5d                   	pop    %rbp
  34:	c3                   	ret
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	48                   	rex.W
  3b:	c7                   	.byte 0xc7
  3c:	04 24                	add    $0x24,%al