------------[ 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: 8156 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline]
WARNING: CPU: 1 PID: 8156 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline]
WARNING: CPU: 1 PID: 8156 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1009
Modules linked in:
CPU: 1 PID: 8156 Comm: syz.0.882 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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 18 00 be fd 4c 8b 45 00 48 c7 c7 80 15 df 8a 48 c7 c6 40 12 df 8a 48 c7 c2 e0 16 df 8a 8b 0c 24 4d 89 e9 e8 54 87 38 fd <0f> 0b 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc ff df ff 05 85 9a 0a
RSP: 0018:ffffc900001e0a10 EFLAGS: 00010246
RAX: 007fde5f6fd09f00 RBX: ffffffff96e347d8 RCX: ffff888078bd8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffffff8a8def40 R08: ffffc900001e0687 R09: 1ffff9200003c0d0
R10: dffffc0000000000 R11: fffff5200003c0d1 R12: ffff8880284ba600
R13: ffffffff892a2900 R14: ffff8880284ba000 R15: ffff8880284ba490
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000038e030 CR3: 0000000056065000 CR4: 00000000003506e0
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+0x1ac/0x670 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x53e/0x800 kernel/time/timer.c:2023
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
__do_softirq kernel/softirq.c:630 [inline]
invoke_softirq kernel/softirq.c:470 [inline]
__irq_exit_rcu+0x13b/0x230 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:trace_lock_release include/trace/events/lock.h:69 [inline]
RIP: 0010:lock_release+0xc8/0x920 kernel/locking/lockdep.c:5673
Code: 0e 02 bb 0c 0f 83 3a 05 00 00 41 89 de c1 eb 06 48 8d 3c dd 28 c3 1f 8e be 08 00 00 00 e8 b0 9b 6e 00 4c 0f a3 35 e0 ff ba 0c <73> 0d e8 c1 af 07 00 84 c0 0f 84 41 05 00 00 48 c7 c0 e4 f7 1f 8e
RSP: 0018:ffffc9000d9f72e0 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8164c340
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e1fc328
RBP: ffffc9000d9f73f8 R08: ffffffff8e1fc32f R09: 1ffffffff1c3f865
R10: dffffc0000000000 R11: fffffbfff1c3f866 R12: ffffea000197c858
R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff92001b3ee68
page_remove_rmap+0x7e3/0xea0 mm/rmap.c:1462
zap_pte_range mm/memory.c:1451 [inline]
zap_pmd_range mm/memory.c:1572 [inline]
zap_pud_range mm/memory.c:1601 [inline]
zap_p4d_range mm/memory.c:1622 [inline]
unmap_page_range+0x114a/0x2500 mm/memory.c:1643
unmap_vmas+0x260/0x390 mm/memory.c:1728
exit_mmap+0x20d/0x960 mm/mmap.c:3250
__mmput+0x118/0x3c0 kernel/fork.c:1205
exit_mm+0x1fe/0x2d0 kernel/exit.c:565
do_exit+0x905/0x2480 kernel/exit.c:867
do_group_exit+0x217/0x2d0 kernel/exit.c:1022
get_signal+0x1272/0x1350 kernel/signal.c:2871
arch_do_signal_or_restart+0xc4/0x1350 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f95cff9aeb9
Code: Unable to access opcode bytes at 0x7f95cff9ae8f.
RSP: 002b:00007f95d0edc028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: 0000000000010106 RBX: 00007f95d0216090 RCX: 00007f95cff9aeb9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007f95d0008c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f95d0216128 R14: 00007f95d0216090 R15: 00007ffe0873d248
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 02 bb 0c 0f 83 3a add 0x3a830f0c(%rbx),%bh
6: 05 00 00 41 89 add $0x89410000,%eax
b: de c1 faddp %st,%st(1)
d: eb 06 jmp 0x15
f: 48 8d 3c dd 28 c3 1f lea -0x71e03cd8(,%rbx,8),%rdi
16: 8e
17: be 08 00 00 00 mov $0x8,%esi
1c: e8 b0 9b 6e 00 call 0x6e9bd1
21: 4c 0f a3 35 e0 ff ba bt %r14,0xcbaffe0(%rip) # 0xcbb0009
28: 0c
* 29: 73 0d jae 0x38 <-- trapping instruction
2b: e8 c1 af 07 00 call 0x7aff1
30: 84 c0 test %al,%al
32: 0f 84 41 05 00 00 je 0x579
38: 48 c7 c0 e4 f7 1f 8e mov $0xffffffff8e1ff7e4,%rax