skbuff: skb_under_panic: text:ffffffff89ec21b7 len:1475324772 put:1475324716 head:ffff8880735523c0 data:ffff88801b6578d4 tail:0x78 end:0x180 dev:team0
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:213!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 2224 Comm: syz.7.8179 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:213
Code: c7 20 98 6f 8c 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 55 41 57 41 56 e8 2e 6a f5 ff 48 83 c4 20 90 <0f> 0b cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000a08598 EFLAGS: 00010282
RAX: 0000000000000096 RBX: dffffc0000000000 RCX: fe7022ac96c1f300
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000000180 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bbae2c R12: ffff88802edc5a10
R13: ffff8880735523c0 R14: ffff88801b6578d4 R15: 0000000000000078
FS: 000055555b4a7500(0000) GS:ffff888125f35000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005607a1614168 CR3: 00000000a8112000 CR4: 00000000003526f0
Call Trace:
skb_under_panic net/core/skbuff.c:223 [inline]
skb_push+0xc3/0xe0 net/core/skbuff.c:2641
ipgre_header+0x67/0x290 net/ipv4/ip_gre.c:895
dev_hard_header include/linux/netdevice.h:3436 [inline]
neigh_connected_output+0x286/0x460 net/core/neighbour.c:1618
neigh_output include/net/neighbour.h:556 [inline]
ip6_finish_output2+0xfb3/0x1480 net/ipv6/ip6_output.c:136
NF_HOOK_COND include/linux/netfilter.h:307 [inline]
ip6_output+0x340/0x550 net/ipv6/ip6_output.c:247
NF_HOOK include/linux/netfilter.h:318 [inline]
ndisc_send_skb+0xbce/0x1510 net/ipv6/ndisc.c:512
addrconf_rs_timer+0x369/0x6a0 net/ipv6/addrconf.c:4037
call_timer_fn+0x16e/0x590 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1799 [inline]
__run_timers kernel/time/timer.c:2373 [inline]
__run_timer_base+0x61a/0x860 kernel/time/timer.c:2385
run_timer_base kernel/time/timer.c:2394 [inline]
run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2404
handle_softirqs+0x27d/0x850 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:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lockdep_unregister_key+0x326/0x3a0 kernel/locking/lockdep.c:6616
Code: 18 0f 84 d1 fd ff ff e8 f8 03 bd 09 89 c7 e8 21 08 00 00 e9 53 fe ff ff e8 17 05 bd 09 41 f7 c7 00 02 00 00 74 b1 fb 40 84 ed <75> b0 eb c1 90 0f 0b 90 e9 15 ff ff ff 90 0f 0b 90 e9 1d ff ff ff
RSP: 0018:ffffc9000b5df950 EFLAGS: 00000246
RAX: fe7022ac96c1f300 RBX: ffff8880445aa268 RCX: fe7022ac96c1f300
RDX: ffffffff934263d8 RSI: ffffffff8d7a7175 RDI: ffffffff8bc08360
RBP: ffff88802792db00 R08: ffffffff81abe7e8 R09: ffffffff8df41a20
R10: dffffc0000000000 R11: fffffbfff1f0440f R12: 0000000000000000
R13: ffff8880445aa269 R14: 0000000000001000 R15: 0000000000000a87
__qdisc_destroy+0x166/0x400 net/sched/sch_generic.c:1079
netdev_for_each_tx_queue include/linux/netdevice.h:2680 [inline]
dev_shutdown+0x93/0x440 net/sched/sch_generic.c:1490
unregister_netdevice_many_notify+0x11b3/0x2340 net/core/dev.c:12369
unregister_netdevice_many net/core/dev.c:12444 [inline]
unregister_netdevice_queue+0x317/0x350 net/core/dev.c:12258
unregister_netdevice include/linux/netdevice.h:3405 [inline]
__tun_detach+0x6d9/0x15d0 drivers/net/tun.c:621
tun_detach drivers/net/tun.c:637 [inline]
tun_chr_close+0x10a/0x1c0 drivers/net/tun.c:3436
__fput+0x44c/0xa70 fs/file_table.c:468
task_work_run+0x1d4/0x260 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
do_syscall_64+0x2d0/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f61b0f8f749
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:00007fffef2685b8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f61b11e7da0 RCX: 00007f61b0f8f749
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f61b11e7da0 R08: 00000000000001f8 R09: 0000001eef2688af
R10: 00000000003ffbe4 R11: 0000000000000246 R12: 00000000000b9d8b
R13: 00007fffef2686b0 R14: ffffffffffffffff R15: 00007fffef2686d0
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:213
Code: c7 20 98 6f 8c 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 55 41 57 41 56 e8 2e 6a f5 ff 48 83 c4 20 90 <0f> 0b cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000a08598 EFLAGS: 00010282
RAX: 0000000000000096 RBX: dffffc0000000000 RCX: fe7022ac96c1f300
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000000180 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bbae2c R12: ffff88802edc5a10
R13: ffff8880735523c0 R14: ffff88801b6578d4 R15: 0000000000000078
FS: 000055555b4a7500(0000) GS:ffff888125f35000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005607a1614168 CR3: 00000000a8112000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 0f 84 d1 fd ff ff je 0xfffffdd7
6: e8 f8 03 bd 09 call 0x9bd0403
b: 89 c7 mov %eax,%edi
d: e8 21 08 00 00 call 0x833
12: e9 53 fe ff ff jmp 0xfffffe6a
17: e8 17 05 bd 09 call 0x9bd0533
1c: 41 f7 c7 00 02 00 00 test $0x200,%r15d
23: 74 b1 je 0xffffffd6
25: fb sti
26: 40 84 ed test %bpl,%bpl
* 29: 75 b0 jne 0xffffffdb <-- trapping instruction
2b: eb c1 jmp 0xffffffee
2d: 90 nop
2e: 0f 0b ud2
30: 90 nop
31: e9 15 ff ff ff jmp 0xffffff4b
36: 90 nop
37: 0f 0b ud2
39: 90 nop
3a: e9 1d ff ff ff jmp 0xffffff5c