------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff888059df8490 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: CPU: 0 PID: 26657 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 0 UID: 0 PID: 26657 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: 0x0 (events)
RIP: 0010:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Code: 4c 89 ff e8 37 f9 8b fd 4d 8b 0f 48 c7 c7 80 7e c0 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 fa 77 e9 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 77 06 05 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90000007a00 EFLAGS: 00010296
RAX: aa23bfa59c8d8d00 RBX: dffffc0000000000 RCX: ffff88802ff4bc80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa658 R12: ffffffff8a3e0c00
R13: ffffffff8bc08000 R14: ffff888059df8490 R15: ffffffff8b6cf600
FS: 0000000000000000(0000) GS:ffff888125d0f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3e4fc2ed00 CR3: 0000000076fbc000 CR4: 00000000003526f0
Call Trace:
__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+0x283/0x870 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
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch+0x26b/0x950 kernel/sched/core.c:5193
Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 ff 3b bd 09 e8 8a a9 36 00 fb 4c 8b 65 c0 <49> 8d bc 24 58 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc90019e87998 EFLAGS: 00000282
RAX: aa23bfa59c8d8d00 RBX: 0000000000000000 RCX: aa23bfa59c8d8d00
RDX: 0000000000000000 RSI: ffffffff8d7e8753 RDI: ffffffff8bc074e0
RBP: ffffc90019e879f0 R08: ffffffff8f9e0f77 R09: 1ffffffff1f3c1ee
R10: dffffc0000000000 R11: fffffbfff1f3c1ef R12: ffff88802ff4bc80
R13: dffffc0000000000 R14: ffff888027183c80 R15: ffff8880b863abd8
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x17a0/0x4cc0 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7026
worker_thread+0xa82/0xda0 kernel/workqueue.c:3442
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
----------------
Code disassembly (best guess):
0: 0f 84 3c 01 00 00 je 0x142
6: 48 85 db test %rbx,%rbx
9: 0f 85 63 01 00 00 jne 0x172
f: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
14: 4c 8b 75 d0 mov -0x30(%rbp),%r14
18: 4c 89 e7 mov %r12,%rdi
1b: e8 ff 3b bd 09 call 0x9bd3c1f
20: e8 8a a9 36 00 call 0x36a9af
25: fb sti
26: 4c 8b 65 c0 mov -0x40(%rbp),%r12
* 2a: 49 8d bc 24 58 16 00 lea 0x1658(%r12),%rdi <-- trapping instruction
31: 00
32: 48 89 f8 mov %rdi,%rax
35: 48 c1 e8 03 shr $0x3,%rax
39: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
3e: 84 c0 test %al,%al