------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: timer_list hint: rose_transmit_restart_request net/rose/rose_link.c:-1 [inline]
ODEBUG: free active (active state 0) object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:284
WARNING: CPU: 1 PID: 3637 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline]
WARNING: CPU: 1 PID: 3637 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline]
WARNING: CPU: 1 PID: 3637 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1009
Modules linked in:
CPU: 1 PID: 3637 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:debug_print_object lib/debugobjects.c:515 [inline]
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:979 [inline]
RIP: 0010:debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1009
Code: ef e8 f8 72 c5 fd 4c 8b 45 00 48 c7 c7 00 06 df 8a 48 c7 c6 c0 02 df 8a 48 c7 c2 60 07 df 8a 8b 0c 24 4d 89 e9 e8 a4 7d 41 fd <0f> 0b 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc ff df ff 05 55 2d 14
RSP: 0018:ffffc900001e0a10 EFLAGS: 00010246
RAX: ea970de33e3f9300 RBX: ffffffff96e37978 RCX: ffff88807c4a3b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffffff8a8de220 R08: dffffc0000000000 R09: fffff5200003c0d1
R10: fffff5200003c0d1 R11: 1ffff9200003c0d0 R12: ffff888058b98e00
R13: ffffffff8918ff80 R14: ffff888058b98000 R15: ffff888058b98c90
FS:  00007f3d9c349880(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556fa795c8 CR3: 000000007e6fe000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 slab_free_hook mm/slub.c:1704 [inline]
 slab_free_freelist_hook+0xd2/0x1a0 mm/slub.c:1755
 slab_free mm/slub.c:3687 [inline]
 __kmem_cache_free+0xb6/0x1f0 mm/slub.c:3700
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x4a7/0x5d0 net/rose/rose_timer.c:183
 call_timer_fn+0x1a0/0x670 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1549 [inline]
 __run_timers+0x525/0x7c0 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:expand_files+0x0/0x7f0 fs/file.c:224
Code: f6 2a 9a ff b8 f7 ff ff ff 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 dd 2a 9a ff 4c 89 e7 e8 25 d6 3a 08 89 e8 eb e0 90 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 00 01
RSP: 0018:ffffc90003227d38 EFLAGS: 00000287
RAX: ffffffff81e66e93 RBX: 000000000000000c RCX: 0000000000000000
RDX: ffff88807c4a3b80 RSI: 000000000000000c RDI: ffff88807cbf83c0
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000644f98 R11: 1ffff92000644f98 R12: dffffc0000000000
R13: ffff88807cbf84c0 R14: ffff88807cbf8420 R15: 0000000000000400
 alloc_fd+0x218/0x630 fs/file.c:512
 do_sys_openat2+0x11e/0x490 fs/open.c:1316
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1345
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3d9bd15c3a
Code: 41 89 f2 48 89 54 24 e0 41 83 e2 40 75 2a 89 f0 f7 d0 a9 00 00 41 00 74 1f 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 77 2e c3 0f 1f 44 00 00 48 8d 44 24 08 c7 44 24
RSP: 002b:00007ffee79babb8 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055a047134f30 RCX: 00007f3d9bd15c3a
RDX: 0000000000090800 RSI: 000055a04710ee40 RDI: 00000000ffffff9c
RBP: 000055a04710ee40 R08: 00000000000001d0 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000206 R12: 000055a04711c7b0
R13: 0000000000000100 R14: 0000000000000000 R15: 00007ffee79bae10
 </TASK>
----------------
Code disassembly (best guess), 4 bytes skipped:
   0:	b8 f7 ff ff ff       	mov    $0xfffffff7,%eax
   5:	48 83 c4 10          	add    $0x10,%rsp
   9:	5b                   	pop    %rbx
   a:	41 5c                	pop    %r12
   c:	41 5d                	pop    %r13
   e:	41 5e                	pop    %r14
  10:	41 5f                	pop    %r15
  12:	5d                   	pop    %rbp
  13:	c3                   	ret
  14:	e8 dd 2a 9a ff       	call   0xff9a2af6
  19:	4c 89 e7             	mov    %r12,%rdi
  1c:	e8 25 d6 3a 08       	call   0x83ad646
  21:	89 e8                	mov    %ebp,%eax
  23:	eb e0                	jmp    0x5
  25:	90                   	nop
* 26:	55                   	push   %rbp <-- trapping instruction
  27:	48 89 e5             	mov    %rsp,%rbp
  2a:	41 57                	push   %r15
  2c:	41 56                	push   %r14
  2e:	41 55                	push   %r13
  30:	41 54                	push   %r12
  32:	53                   	push   %rbx
  33:	48 83 e4 e0          	and    $0xffffffffffffffe0,%rsp
  37:	48                   	rex.W
  38:	81                   	.byte 0x81
  39:	ec                   	in     (%dx),%al
  3a:	00 01                	add    %al,(%rcx)