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ODEBUG: free active (active state 0) object: ffff888052a13090 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: CPU: 0 PID: 17128 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 0 UID: 0 PID: 17128 Comm: syz-executor 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: c5c22391d9bb6d00 RBX: dffffc0000000000 RCX: ffff888032909e40
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba680 R12: ffffffff8a3924f0
R13: ffffffff8bbf1280 R14: ffff888052a13090 R15: ffffffff8b6cf7a0
FS:  000055557e103500(0000) GS:ffff88812613b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f93cd5156c0 CR3: 00000000275a6000 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: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:preempt_count_sub+0x65/0x170 kernel/sched/core.c:5833
Code: ff ff ff 7f 39 cf 7f 2a 81 ff ff 00 00 00 0f 93 c1 84 c0 0f 95 c0 08 c8 74 5e 65 8b 05 24 5e de 10 f7 df 65 01 3d 1b 5e de 10 <5b> 5d e9 84 52 b9 09 cc 90 e8 8d 2f f6 02 85 c0 74 39 48 c7 c0 94
RSP: 0018:ffffc90002fc71c8 EFLAGS: 00000297
RAX: 0000000080000001 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff
RBP: ffffc90002fc7450 R08: ffff8880b88401c3 R09: 1ffff11017108038
R10: dffffc0000000000 R11: ffffed1017108039 R12: dffffc0000000000
R13: ffff88813fffc300 R14: ffff8880b88401c0 R15: ffff88813fffbb80
 rmqueue_pcplist mm/page_alloc.c:3310 [inline]
 rmqueue mm/page_alloc.c:3340 [inline]
 get_page_from_freelist+0x934/0x2440 mm/page_alloc.c:3881
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416
 alloc_frozen_pages_noprof mm/mempolicy.c:2487 [inline]
 alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2507
 pagetable_alloc_noprof include/linux/mm.h:2980 [inline]
 __pud_alloc_one_noprof include/asm-generic/pgalloc.h:177 [inline]
 pud_alloc_one_noprof include/asm-generic/pgalloc.h:198 [inline]
 __pud_alloc+0x3f/0x450 mm/memory.c:6549
 pud_alloc include/linux/mm.h:2931 [inline]
 copy_pud_range mm/memory.c:1406 [inline]
 copy_p4d_range mm/memory.c:1450 [inline]
 copy_page_range+0xcb0/0x1270 mm/memory.c:1538
 dup_mmap+0xf4c/0x1b10 mm/mmap.c:1834
 dup_mm kernel/fork.c:1489 [inline]
 copy_mm+0x13c/0x4b0 kernel/fork.c:1541
 copy_process+0x1706/0x3c00 kernel/fork.c:2181
 kernel_clone+0x21e/0x840 kernel/fork.c:2609
 __do_sys_clone kernel/fork.c:2750 [inline]
 __se_sys_clone kernel/fork.c:2734 [inline]
 __x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2734
 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: 0033:0x7f93cc785e13
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffed50b13d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f93cc785e13
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 000055557e1037d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000063e84 R15: 00007ffed50b1570
 </TASK>
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	7f 39                	jg     0x3b
   2:	cf                   	iret
   3:	7f 2a                	jg     0x2f
   5:	81 ff ff 00 00 00    	cmp    $0xff,%edi
   b:	0f 93 c1             	setae  %cl
   e:	84 c0                	test   %al,%al
  10:	0f 95 c0             	setne  %al
  13:	08 c8                	or     %cl,%al
  15:	74 5e                	je     0x75
  17:	65 8b 05 24 5e de 10 	mov    %gs:0x10de5e24(%rip),%eax        # 0x10de5e42
  1e:	f7 df                	neg    %edi
  20:	65 01 3d 1b 5e de 10 	add    %edi,%gs:0x10de5e1b(%rip)        # 0x10de5e42
* 27:	5b                   	pop    %rbx <-- trapping instruction
  28:	5d                   	pop    %rbp
  29:	e9 84 52 b9 09       	jmp    0x9b952b2
  2e:	cc                   	int3
  2f:	90                   	nop
  30:	e8 8d 2f f6 02       	call   0x2f62fc2
  35:	85 c0                	test   %eax,%eax
  37:	74 39                	je     0x72
  39:	48                   	rex.W
  3a:	c7                   	.byte 0xc7
  3b:	c0                   	.byte 0xc0
  3c:	94                   	xchg   %eax,%esp