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ODEBUG: free active (active state 0) object: ffff88805d95f090 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350
WARNING: CPU: 0 PID: 13943 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline]
WARNING: CPU: 0 PID: 13943 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:990 [inline]
WARNING: CPU: 0 PID: 13943 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x446/0x540 lib/debugobjects.c:1020
Modules linked in:
CPU: 0 PID: 13943 Comm: syz.0.1749 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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 e0 a5 1c 8b 48 c7 c6 40 a2 1c 8b 48 c7 c2 60 a7 1c 8b 8b 0c 24 4d 89 f8 41 55 e8 6e 2a 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 03 e8 59
RSP: 0000:ffffc90000007a50 EFLAGS: 00010296
RAX: 1535045872a7bb00 RBX: ffffffff9752c400 RCX: ffff888024e18000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffffff8accae60 R08: ffffffff911cd6df R09: 1ffffffff2239adb
R10: dffffc0000000000 R11: fffffbfff2239adc R12: ffff88805d95f200
R13: ffffffff897cc670 R14: ffff88805d95f000 R15: ffff88805d95f090
FS: 00007f8d04a206c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3041dff8 CR3: 0000000053e48000 CR4: 00000000003506f0
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:console_flush_all+0x8b1/0xd20 arch/x86/include/asm/irqflags.h:-1
Code: ed 01 00 00 e8 f0 8a 1b 00 4d 85 ff 48 8b 5c 24 38 75 07 e8 e1 8a 1b 00 eb 06 e8 da 8a 1b 00 fb 49 bf 00 00 00 00 00 fc ff df <48> 8b 44 24 58 42 0f b6 04 38 84 c0 0f 85 2f 02 00 00 80 3b 01 0f
RSP: 0000:ffffc90003256800 EFLAGS: 00000287
RAX: ffffffff816ba0b6 RBX: ffffc9000325699f RCX: 0000000000080000
RDX: ffffc9000ea47000 RSI: 000000000007f1ea RDI: 000000000007f1eb
RBP: ffffc90003256970 R08: ffffffff911cd507 R09: 1ffffffff2239aa0
R10: dffffc0000000000 R11: fffffbfff2239aa1 R12: ffffffff8d8baa40
R13: 1ffffffff19f9724 R14: ffffffff8d8baa98 R15: dffffc0000000000
console_unlock+0xad/0x350 kernel/printk/printk.c:3069
vprintk_emit+0x497/0x610 kernel/printk/printk.c:2341
_printk+0xde/0x130 kernel/printk/printk.c:2366
batadv_check_known_mac_addr+0x2a7/0x3e0 net/batman-adv/hard-interface.c:528
batadv_hardif_add_interface net/batman-adv/hard-interface.c:906 [inline]
batadv_hard_if_event+0x10ac/0x15b0 net/batman-adv/hard-interface.c:970
notifier_call_chain+0x197/0x380 kernel/notifier.c:93
call_netdevice_notifiers_extack net/core/dev.c:2077 [inline]
call_netdevice_notifiers net/core/dev.c:2091 [inline]
register_netdevice+0x16a5/0x1bb0 net/core/dev.c:10351
ipvlan_link_new+0x38b/0xa90 drivers/net/ipvlan/ipvlan_main.c:588
rtnl_newlink_create net/core/rtnetlink.c:3521 [inline]
__rtnl_newlink net/core/rtnetlink.c:3741 [inline]
rtnl_newlink+0x1542/0x20a0 net/core/rtnetlink.c:3754
rtnetlink_rcv_msg+0x869/0xfa0 net/core/rtnetlink.c:6476
netlink_rcv_skb+0x241/0x4d0 net/netlink/af_netlink.c:2545
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x751/0x8d0 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x8d0/0xbf0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x5ba/0x960 net/socket.c:2594
___sys_sendmsg+0x2a6/0x360 net/socket.c:2648
__sys_sendmsg net/socket.c:2677 [inline]
__do_sys_sendmsg net/socket.c:2686 [inline]
__se_sys_sendmsg+0x1c2/0x2b0 net/socket.c:2684
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f8d03b9ce59
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:00007f8d04a20028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f8d03e16090 RCX: 00007f8d03b9ce59
RDX: 0000000020008004 RSI: 00002000000002c0 RDI: 0000000000000009
RBP: 00007f8d03c32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8d03e16128 R14: 00007f8d03e16090 R15: 00007ffccc34f028
----------------
Code disassembly (best guess):
0: ed in (%dx),%eax
1: 01 00 add %eax,(%rax)
3: 00 e8 add %ch,%al
5: f0 8a 1b lock mov (%rbx),%bl
8: 00 4d 85 add %cl,-0x7b(%rbp)
b: ff 48 8b decl -0x75(%rax)
e: 5c pop %rsp
f: 24 38 and $0x38,%al
11: 75 07 jne 0x1a
13: e8 e1 8a 1b 00 call 0x1b8af9
18: eb 06 jmp 0x20
1a: e8 da 8a 1b 00 call 0x1b8af9
1f: fb sti
20: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15
27: fc ff df
* 2a: 48 8b 44 24 58 mov 0x58(%rsp),%rax <-- trapping instruction
2f: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax
34: 84 c0 test %al,%al
36: 0f 85 2f 02 00 00 jne 0x26b
3c: 80 3b 01 cmpb $0x1,(%rbx)
3f: 0f .byte 0xf