------------[ 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: 0 PID: 0 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline]
WARNING: CPU: 0 PID: 0 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline]
WARNING: CPU: 0 PID: 0 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1009
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 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:ffffc90000007a10 EFLAGS: 00010246
RAX: d070084dab133300 RBX: ffffffff96e042c8 RCX: ffffffff8c8bc680
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffffff8a8de220 R08: dffffc0000000000 R09: fffff52000000ed1
R10: fffff52000000ed1 R11: 1ffff92000000ed0 R12: ffff88802815fa00
R13: ffffffff89192300 R14: ffff88802815f000 R15: ffff88802815f890
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdb32e8be8 CR3: 0000000020a91000 CR4: 00000000003506f0
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:steal_cookie_task kernel/sched/core.c:6221 [inline]
RIP: 0010:sched_core_balance+0x5ab/0xdc0 kernel/sched/core.c:6240
Code: 05 00 00 48 8b 7c 24 20 e8 a2 d4 c7 08 e9 c6 04 00 00 4c 8b 7c 24 38 48 8b 7c 24 48 e8 8e d4 c7 08 e8 d9 55 2d 00 fb 45 84 f6 <0f> 85 09 06 00 00 48 c1 e3 20 48 8b 44 24 50 42 0f b6 04 20 84 c0
RSP: 0018:ffffffff8c807a00 EFLAGS: 00000246
RAX: d070084dab133300 RBX: 0000000000000001 RCX: d070084dab133300
RDX: dffffc0000000000 RSI: ffffffff8a8c0500 RDI: ffffffff8adefd20
RBP: ffffffff8c807b68 R08: dffffc0000000000 R09: ffffed10171c7559
R10: ffffed10171c7559 R11: 1ffff110171c7558 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
do_balance_callbacks kernel/sched/core.c:4892 [inline]
__balance_callbacks kernel/sched/core.c:4946 [inline]
finish_lock_switch kernel/sched/core.c:5002 [inline]
finish_task_switch+0x39d/0x8f0 kernel/sched/core.c:5121
context_switch kernel/sched/core.c:5247 [inline]
__schedule+0x10f4/0x40b0 kernel/sched/core.c:6561
schedule_idle+0x4a/0x90 kernel/sched/core.c:6665
do_idle+0x525/0x570 kernel/sched/idle.c:331
cpu_startup_entry+0x3f/0x60 kernel/sched/idle.c:401
rest_init+0x2dc/0x300 init/main.c:733
arch_call_rest_init+0xa/0xa init/main.c:893
start_kernel+0x490/0x539 init/main.c:1140
secondary_startup_64_no_verify+0xcf/0xdb
----------------
Code disassembly (best guess):
0: 05 00 00 48 8b add $0x8b480000,%eax
5: 7c 24 jl 0x2b
7: 20 e8 and %ch,%al
9: a2 d4 c7 08 e9 c6 04 movabs %al,0x4c6e908c7d4
10: 00 00
12: 4c 8b 7c 24 38 mov 0x38(%rsp),%r15
17: 48 8b 7c 24 48 mov 0x48(%rsp),%rdi
1c: e8 8e d4 c7 08 call 0x8c7d4af
21: e8 d9 55 2d 00 call 0x2d55ff
26: fb sti
27: 45 84 f6 test %r14b,%r14b
* 2a: 0f 85 09 06 00 00 jne 0x639 <-- trapping instruction
30: 48 c1 e3 20 shl $0x20,%rbx
34: 48 8b 44 24 50 mov 0x50(%rsp),%rax
39: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax
3e: 84 c0 test %al,%al