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ODEBUG: free active (active state 0) object: ffff888054573c90 object type: timer_list hint: rose_t0timer_expiry+0x0/0x150 include/linux/skbuff.h:2927
WARNING: CPU: 1 PID: 0 at lib/debugobjects.c:612 debug_print_object+0x1a2/0x2b0 lib/debugobjects.c:612
Modules linked in:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 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+0x1a2/0x2b0 lib/debugobjects.c:612
Code: fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 54 41 56 48 8b 14 dd a0 f9 f1 8b 4c 89 e6 48 c7 c7 20 ee f1 8b e8 cf b5 c9 fc 90 <0f> 0b 90 90 58 83 05 b6 ee d1 0b 01 48 83 c4 18 5b 5d 41 5c 41 5d
RSP: 0018:ffffc90000a08a18 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff817b5ee8
RDX: ffff88801d6a5ac0 RSI: ffffffff817b5ef5 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff8bf1f4c0
R13: ffffffff8b901fe0 R14: ffffffff8a515750 R15: ffffc90000a08b18
FS: 0000000000000000(0000) GS:ffff888124ada000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc63daef98 CR3: 000000005d410000 CR4: 0000000000350ef0
Call Trace:
__debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
debug_check_no_obj_freed+0x4b7/0x600 lib/debugobjects.c:1129
slab_free_hook mm/slub.c:2454 [inline]
slab_free mm/slub.c:6611 [inline]
kfree+0x291/0x6d0 mm/slub.c:6818
rose_neigh_put include/net/rose.h:166 [inline]
rose_timer_expiry+0x53f/0x630 net/rose/rose_timer.c:183
call_timer_fn+0x19a/0x620 kernel/time/timer.c:1747
expire_timers kernel/time/timer.c:1798 [inline]
__run_timers+0x6ef/0x960 kernel/time/timer.c:2372
__run_timer_base kernel/time/timer.c:2384 [inline]
__run_timer_base kernel/time/timer.c:2376 [inline]
run_timer_base+0x114/0x190 kernel/time/timer.c:2393
run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2403
handle_softirqs+0x219/0x8e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x109/0x170 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+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1052
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:finish_task_switch.isra.0+0x22a/0xc10 kernel/sched/core.c:5193
Code: fb 09 00 00 44 8b 05 19 3e f9 0e 45 85 c0 0f 85 be 01 00 00 4c 89 e7 e8 a4 f6 ff ff e8 df d1 3a 00 fb 65 48 8b 1d de 07 1a 12 <48> 8d bb 58 16 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc90000197bc8 EFLAGS: 00000202
RAX: 0000000006093fc7 RBX: ffff88801d6a5ac0 RCX: ffffffff81c5290f
RDX: 0000000000000000 RSI: ffffffff8db01d98 RDI: ffffffff8bf1e8c0
RBP: ffffc90000197c10 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff908365d7 R11: 0000000000000001 R12: ffff8880b853a4c0
R13: ffff888025fb9e40 R14: ffff8880b843a4c0 R15: ffff8880b853b2f0
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x1198/0x5de0 kernel/sched/core.c:6929
schedule_idle+0x5c/0x90 kernel/sched/core.c:7052
do_idle+0x2b3/0x500 kernel/sched/idle.c:358
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:428
start_secondary+0x21d/0x2b0 arch/x86/kernel/smpboot.c:315
common_startup_64+0x13e/0x148
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 00 00 add %al,(%rax)
2: 44 8b 05 19 3e f9 0e mov 0xef93e19(%rip),%r8d # 0xef93e22
9: 45 85 c0 test %r8d,%r8d
c: 0f 85 be 01 00 00 jne 0x1d0
12: 4c 89 e7 mov %r12,%rdi
15: e8 a4 f6 ff ff call 0xfffff6be
1a: e8 df d1 3a 00 call 0x3ad1fe
1f: fb sti
20: 65 48 8b 1d de 07 1a mov %gs:0x121a07de(%rip),%rbx # 0x121a0806
27: 12
* 28: 48 8d bb 58 16 00 00 lea 0x1658(%rbx),%rdi <-- trapping instruction
2f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
36: fc ff df
39: 48 89 fa mov %rdi,%rdx
3c: 48 rex.W
3d: c1 .byte 0xc1