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ODEBUG: free active (active state 0) object: ffff888022b09890 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: CPU: 0 PID: 10574 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 0 UID: 0 PID: 10574 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Code: 4c 89 ff e8 97 e8 52 fd 4d 8b 0f 48 c7 c7 20 40 e3 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 2a 1e b3 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 67 8a d3 0a 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90000007a10 EFLAGS: 00010292
RAX: a3e2bcba51f52800 RBX: dffffc0000000000 RCX: ffff88802f995a00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa1ec R12: ffffffff8a6c9760
R13: ffffffff8be341a0 R14: ffff888022b09890 R15: ffffffff8b8cdfa0
FS:  00005555915c9500(0000) GS:ffff888125c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f28b06e8740 CR3: 0000000024a50000 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:2348 [inline]
 slab_free mm/slub.c:4680 [inline]
 kfree+0x112/0x440 mm/slub.c:4879
 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+0x283/0x870 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:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:free_pages_prepare mm/page_alloc.c:1311 [inline]
RIP: 0010:__free_frozen_pages+0xd9/0xd30 mm/page_alloc.c:2895
Code: f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 f7 e8 04 ab 0d 00 49 f7 06 01 00 00 00 0f 94 c0 89 04 24 <eb> 07 c7 04 24 00 00 00 00 48 8d 6b 08 49 89 ed 49 c1 ed 03 48 b8
RSP: 0018:ffffc9001abcf828 EFLAGS: 00000246
RAX: 1ffffd40001dba01 RBX: ffffea0000edd540 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea0000edd540
RBP: ffff88801cac8a80 R08: ffffea0000edd547 R09: 1ffffd40001dbaa8
R10: dffffc0000000000 R11: fffff940001dbaa9 R12: ffff88803b755c80
R13: 00000000000c0001 R14: ffffea0000edd548 R15: 0000000000000000
 __slab_free+0x303/0x3c0 mm/slub.c:4591
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:396
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_node_noprof+0x234/0x3d0 mm/slub.c:4408
 kmalloc_node_noprof include/linux/slab.h:928 [inline]
 __get_vm_area_node+0x13f/0x300 mm/vmalloc.c:3176
 __vmalloc_node_range_noprof+0x301/0x12f0 mm/vmalloc.c:3853
 __vmalloc_node_noprof mm/vmalloc.c:3956 [inline]
 __vmalloc_area_node mm/vmalloc.c:3695 [inline]
 __vmalloc_node_range_noprof+0x56a/0x12f0 mm/vmalloc.c:3893
 vmalloc_user_noprof+0xad/0xf0 mm/vmalloc.c:4046
 kcov_ioctl+0x55/0x640 kernel/kcov.c:716
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:584
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1bae18e7eb
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007ffed98b8da0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000080000 RCX: 00007f1bae18e7eb
RDX: 0000000000080000 RSI: ffffffff80086301 RDI: 00000000000000d8
RBP: 00007f1bae3b6038 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	f0 48 c1 e8 03       	lock shr $0x3,%rax
   5:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
   c:	fc ff df
   f:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1)
  13:	74 08                	je     0x1d
  15:	4c 89 f7             	mov    %r14,%rdi
  18:	e8 04 ab 0d 00       	call   0xdab21
  1d:	49 f7 06 01 00 00 00 	testq  $0x1,(%r14)
  24:	0f 94 c0             	sete   %al
  27:	89 04 24             	mov    %eax,(%rsp)
* 2a:	eb 07                	jmp    0x33 <-- trapping instruction
  2c:	c7 04 24 00 00 00 00 	movl   $0x0,(%rsp)
  33:	48 8d 6b 08          	lea    0x8(%rbx),%rbp
  37:	49 89 ed             	mov    %rbp,%r13
  3a:	49 c1 ed 03          	shr    $0x3,%r13
  3e:	48                   	rex.W
  3f:	b8                   	.byte 0xb8