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ODEBUG: free active (active state 0) object: ffff88807bc8a090 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: CPU: 1 PID: 14390 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 1 UID: 0 PID: 14390 Comm: syz.3.2577 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+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:ffffc90000a08a00 EFLAGS: 00010296
RAX: 9badfb341d5f0000 RBX: dffffc0000000000 RCX: ffff8880279ddac0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffffffff8f9e0f77 R09: 1ffffffff1f3c1ee
R10: dffffc0000000000 R11: fffffbfff1f3c1ef R12: ffffffff8a3e0c80
R13: ffffffff8bc08000 R14: ffff88807bc8a090 R15: ffffffff8b6cf600
FS: 00007f94be2bc6c0(0000) GS:ffff888125e0f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4d22d156c0 CR3: 0000000078458000 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:console_flush_all+0x7f4/0xb10 arch/x86/include/asm/irqflags.h:-1
Code: ff ff e8 2f b2 1f 00 90 0f 0b 90 e9 62 fc ff ff e8 21 b2 1f 00 e8 5c 60 ab 09 48 85 db 74 c0 e8 12 b2 1f 00 fb 48 8b 5c 24 18 <48> 8b 44 24 20 42 80 3c 20 00 74 08 48 89 df e8 28 50 85 00 48 8b
RSP: 0018:ffffc9000a87f380 EFLAGS: 00000287
RAX: ffffffff819fe1ee RBX: ffffffff8e97d598 RCX: 0000000000080000
RDX: ffffc9000bec1000 RSI: 00000000000029d0 RDI: 00000000000029d1
RBP: ffffc9000a87f4d0 R08: ffffffff8f9e0f77 R09: 1ffffffff1f3c1ee
R10: dffffc0000000000 R11: fffffbfff1f3c1ef R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffffffff8e97d540
__console_flush_and_unlock kernel/printk/printk.c:3258 [inline]
console_unlock+0xbb/0x190 kernel/printk/printk.c:3298
vprintk_emit+0x4c5/0x590 kernel/printk/printk.c:2423
_printk+0xcf/0x120 kernel/printk/printk.c:2448
xt_check_match+0x768/0xab0 net/netfilter/x_tables.c:507
check_match net/ipv6/netfilter/ip6_tables.c:488 [inline]
find_check_match net/ipv6/netfilter/ip6_tables.c:505 [inline]
find_check_entry net/ipv6/netfilter/ip6_tables.c:556 [inline]
translate_table+0x1553/0x2040 net/ipv6/netfilter/ip6_tables.c:733
do_replace net/ipv6/netfilter/ip6_tables.c:1154 [inline]
do_ip6t_set_ctl+0x970/0xce0 net/ipv6/netfilter/ip6_tables.c:1644
nf_setsockopt+0x26f/0x290 net/netfilter/nf_sockopt.c:101
do_sock_setsockopt+0x179/0x1b0 net/socket.c:2360
__sys_setsockopt net/socket.c:2385 [inline]
__do_sys_setsockopt net/socket.c:2391 [inline]
__se_sys_setsockopt net/socket.c:2388 [inline]
__x64_sys_setsockopt+0x13f/0x1b0 net/socket.c:2388
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f94bd38eec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f94be2bc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f94bd5e5fa0 RCX: 00007f94bd38eec9
RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000004
RBP: 00007f94bd411f91 R08: 00000000000007b0 R09: 0000000000000000
R10: 0000200000001280 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f94bd5e6038 R14: 00007f94bd5e5fa0 R15: 00007fff5315b4c8
----------------
Code disassembly (best guess), 2 bytes skipped:
0: e8 2f b2 1f 00 call 0x1fb234
5: 90 nop
6: 0f 0b ud2
8: 90 nop
9: e9 62 fc ff ff jmp 0xfffffc70
e: e8 21 b2 1f 00 call 0x1fb234
13: e8 5c 60 ab 09 call 0x9ab6074
18: 48 85 db test %rbx,%rbx
1b: 74 c0 je 0xffffffdd
1d: e8 12 b2 1f 00 call 0x1fb234
22: fb sti
23: 48 8b 5c 24 18 mov 0x18(%rsp),%rbx
* 28: 48 8b 44 24 20 mov 0x20(%rsp),%rax <-- trapping instruction
2d: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
32: 74 08 je 0x3c
34: 48 89 df mov %rbx,%rdi
37: e8 28 50 85 00 call 0x855064
3c: 48 rex.W
3d: 8b .byte 0x8b