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ODEBUG: free active (active state 0) object: ffff88805d636890 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350
WARNING: CPU: 1 PID: 12154 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline]
WARNING: CPU: 1 PID: 12154 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:990 [inline]
WARNING: CPU: 1 PID: 12154 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x446/0x540 lib/debugobjects.c:1020
Modules linked in:
CPU: 1 PID: 12154 Comm: syz.0.1303 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:debug_print_object lib/debugobjects.c:515 [inline]
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:990 [inline]
RIP: 0010:debug_check_no_obj_freed+0x446/0x540 lib/debugobjects.c:1020
Code: 4c 8b 4d 00 48 c7 c7 60 93 1c 8b 48 c7 c6 c0 8f 1c 8b 48 c7 c2 e0 94 1c 8b 8b 0c 24 4d 89 f8 41 55 e8 8e 91 1f fd 48 83 c4 08 <0f> 0b 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc ff df ff 05 b3 f0 59
RSP: 0018:ffffc900001f0a50 EFLAGS: 00010296
RAX: 8941f2882ce78200 RBX: ffffffff97515300 RCX: ffff888091ea5a00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffffff8accac00 R08: ffffc900001f0647 R09: 1ffff9200003e0c8
R10: dffffc0000000000 R11: fffff5200003e0c9 R12: ffff88805d636a00
R13: ffffffff897ac5a0 R14: ffff88805d636000 R15: ffff88805d636890
FS: 00007f647fbf66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f647fbf5ff8 CR3: 00000000a44a6000 CR4: 00000000003506e0
Call Trace:
slab_free_hook mm/slub.c:1786 [inline]
slab_free_freelist_hook+0xd2/0x1a0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
__kmem_cache_free+0xba/0x1e0 mm/slub.c:3843
rose_neigh_put include/net/rose.h:166 [inline]
rose_timer_expiry+0x4c6/0x5f0 net/rose/rose_timer.c:183
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x542/0x800 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:finish_task_switch+0x26a/0x8f0 kernel/sched/core.c:5255
Code: 0f 84 33 01 00 00 48 85 db 0f 85 52 01 00 00 e9 de 04 00 00 4c 8b 75 d0 4c 89 e7 e8 90 43 32 09 e8 eb 27 30 00 fb 4c 8b 65 c0 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc9000b8ff218 EFLAGS: 00000286
RAX: 8941f2882ce78200 RBX: 0000000000000000 RCX: 8941f2882ce78200
RDX: dffffc0000000000 RSI: ffffffff8acac9e0 RDI: ffffffff8b1c89a0
RBP: ffffc9000b8ff270 R08: ffffffff8e8b02af R09: 1ffffffff1d16055
R10: dffffc0000000000 R11: fffffbfff1d16056 R12: ffff888091ea5a00
R13: dffffc0000000000 R14: ffff88802114bc00 R15: ffff8880b8f3cac8
context_switch kernel/sched/core.c:5384 [inline]
__schedule+0x155b/0x45a0 kernel/sched/core.c:6700
preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7010
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:692
RIP: 0010:__sanitizer_cov_trace_pc+0x5c/0x60 kernel/kcov.c:234
Code: f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc 15 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 0f 1f 00 f3 0f 1e fa 48 8b 04 24 65 48 8b 15 30 95 7c 7e 65 8b
RSP: 0018:ffffc9000b8ff608 EFLAGS: 00000283
RAX: ffffffff88767415 RBX: ffff888026686280 RCX: 0000000000080000
RDX: ffffc9000eed2000 RSI: 000000000000034b RDI: 000000000000034c
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff88767d60
R10: dffffc0000000000 R11: fffffbfff1d16056 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffff888026686280
__skb_datagram_iter+0x35/0x780 net/core/datagram.c:410
skb_copy_datagram_iter+0xb1/0x200 net/core/datagram.c:535
skb_copy_datagram_msg include/linux/skbuff.h:4052 [inline]
rawv6_recvmsg+0x487/0xce0 net/ipv6/raw.c:-1
sock_common_recvmsg+0xfa/0x190 net/core/sock.c:3714
sock_recvmsg_nosec+0x82/0xd0 net/socket.c:1046
____sys_recvmsg+0x4e8/0x5e0 net/socket.c:2811
___sys_recvmsg+0x216/0x590 net/socket.c:2855
do_recvmmsg+0x39a/0x870 net/socket.c:2949
__sys_recvmmsg net/socket.c:3028 [inline]
__do_sys_recvmmsg net/socket.c:3051 [inline]
__se_sys_recvmmsg net/socket.c:3044 [inline]
__x64_sys_recvmmsg+0x199/0x250 net/socket.c:3044
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f648199c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f647fbf6028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f6481c16180 RCX: 00007f648199c819
RDX: 04000000000001e9 RSI: 0000200000000d80 RDI: 0000000000000005
RBP: 00007f6481a32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010162 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6481c16218 R14: 00007f6481c16180 R15: 00007ffd93a9b2e8
----------------
Code disassembly (best guess):
0: 0f 84 33 01 00 00 je 0x139
6: 48 85 db test %rbx,%rbx
9: 0f 85 52 01 00 00 jne 0x161
f: e9 de 04 00 00 jmp 0x4f2
14: 4c 8b 75 d0 mov -0x30(%rbp),%r14
18: 4c 89 e7 mov %r12,%rdi
1b: e8 90 43 32 09 call 0x93243b0
20: e8 eb 27 30 00 call 0x302810
25: fb sti
26: 4c 8b 65 c0 mov -0x40(%rbp),%r12
* 2a: 49 8d bc 24 f8 15 00 lea 0x15f8(%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