------------[ 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: 4383 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline]
WARNING: CPU: 1 PID: 4383 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline]
WARNING: CPU: 1 PID: 4383 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1009
Modules linked in:
CPU: 1 PID: 4383 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 38 79 c5 fd 4c 8b 45 00 48 c7 c7 80 06 df 8a 48 c7 c6 40 03 df 8a 48 c7 c2 e0 07 df 8a 8b 0c 24 4d 89 e9 e8 04 78 41 fd <0f> 0b 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc ff df ff 05 75 17 14
RSP: 0018:ffffc900001e0a10 EFLAGS: 00010246
RAX: 8b261c526f876c00 RBX: ffffffff96f0d9f0 RCX: ffff88801cbebb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffffff8a8de220 R08: dffffc0000000000 R09: fffff5200003c0d1
R10: fffff5200003c0d1 R11: 1ffff9200003c0d0 R12: ffff88802901e600
R13: ffffffff89192300 R14: ffff88802901e000 R15: ffff88802901e490
FS: 00007f566c391880(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f566bdf37b0 CR3: 0000000054da6000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
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
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:360 [inline]
RIP: 0010:unwind_next_frame+0xb17/0x20b0 arch/x86/kernel/unwind_orc.c:539
Code: 39 f0 0f 97 c1 4c 39 f8 0f 96 c0 20 c8 3c 01 0f 85 9f 0d 00 00 48 89 ef e8 16 1f 00 00 49 89 c7 49 bd 00 00 00 00 00 fc ff df <48> 8b 44 24 28 42 80 3c 28 00 4c 8b 74 24 08 74 08 4c 89 f7 e8 f0
RSP: 0018:ffffc900047deff0 EFLAGS: 00000202
RAX: ffffffff816b2db4 RBX: ffffc900047df0c8 RCX: 1ffff920008fbe01
RDX: ffffc900047df460 RSI: ffffffff8e363eb8 RDI: ffffc900047df458
RBP: ffffc900047df458 R08: 000000000000000d R09: 0000000000000001
R10: fffff520008fbe25 R11: 1ffff920008fbe23 R12: 1ffff920008fbe1a
R13: dffffc0000000000 R14: ffffc900047d8000 R15: ffffffff816b2db4
arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
kasan_save_stack+0x3a/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb2/0xc0 mm/kasan/generic.c:486
call_rcu+0x154/0x980 kernel/rcu/tree.c:2849
__dentry_kill+0x4ef/0x650 fs/dcache.c:625
shrink_dentry_list+0x39b/0x6a0 fs/dcache.c:1206
shrink_dcache_parent+0xa8/0x3c0 fs/dcache.c:-1
d_invalidate+0x118/0x260 fs/dcache.c:1742
lookup_fast+0x310/0x4d0 fs/namei.c:1655
walk_component fs/namei.c:1994 [inline]
link_path_walk+0x5f2/0xe50 fs/namei.c:2325
path_openat+0x276/0x2e70 fs/namei.c:3779
do_filp_open+0x1c1/0x3c0 fs/namei.c:3810
do_sys_openat2+0x142/0x490 fs/open.c:1318
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: 0033:0x7f566bca7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007fffe493b170 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f566c391880 RCX: 00007f566bca7407
RDX: 0000000000080000 RSI: 00007fffe493b2f0 RDI: ffffffffffffff9c
RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000055c74abbe7f5
R13: 000055c74abbe7f5 R14: 0000000000000001 R15: 000055c74abc5bcc
----------------
Code disassembly (best guess):
0: 39 f0 cmp %esi,%eax
2: 0f 97 c1 seta %cl
5: 4c 39 f8 cmp %r15,%rax
8: 0f 96 c0 setbe %al
b: 20 c8 and %cl,%al
d: 3c 01 cmp $0x1,%al
f: 0f 85 9f 0d 00 00 jne 0xdb4
15: 48 89 ef mov %rbp,%rdi
18: e8 16 1f 00 00 call 0x1f33
1d: 49 89 c7 mov %rax,%r15
20: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13
27: fc ff df
* 2a: 48 8b 44 24 28 mov 0x28(%rsp),%rax <-- trapping instruction
2f: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
34: 4c 8b 74 24 08 mov 0x8(%rsp),%r14
39: 74 08 je 0x43
3b: 4c 89 f7 mov %r14,%rdi
3e: e8 .byte 0xe8
3f: f0 lock