skbuff: skb_under_panic: text:ffffffff8a26ebb8 len:112 put:40 head:ffff888061088680 data:ffff888061088668 tail:0x58 end:0x180 dev:team0
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:213!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 4972 Comm: kworker/u8:14 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: netns cleanup_net
RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:213
Code: c7 60 33 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 6e 67 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: 0000:ffffc900000074a0 EFLAGS: 00010286
RAX: 0000000000000087 RBX: dffffc0000000000 RCX: 766ab47d1f7d9700
RDX: 0000000000000100 RSI: 0000000000000101 RDI: 0000000000000000
RBP: 0000000000000180 R08: ffffc900000071a7 R09: 1ffff92000000e34
R10: dffffc0000000000 R11: fffff52000000e35 R12: ffff88806f29fa10
R13: ffff888061088680 R14: ffff888061088668 R15: 0000000000000058
FS: 0000000000000000(0000) GS:ffff888125e44000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002da1fffc CR3: 0000000079122000 CR4: 00000000003526f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffeff7ff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
skb_under_panic net/core/skbuff.c:223 [inline]
skb_push+0xc3/0xe0 net/core/skbuff.c:2641
ip6gre_header+0xc8/0x790 net/ipv6/ip6_gre.c:1371
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:preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:7190
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 10 00 00 00 74 64 bf 01 00 00 00 e8 eb 15 35 f6 e8 46 93 6d f6 fb bf 01 00 00 00 1b a8 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0000:ffffc9000e5d74a0 EFLAGS: 00000286
RAX: 766ab47d1f7d9700 RBX: 0000000000000000 RCX: 766ab47d1f7d9700
RDX: 0000000000000006 RSI: ffffffff8d786736 RDI: 0000000000000001
RBP: ffffc9000e5d7540 R08: ffffffff8f817977 R09: 1ffffffff1f02f2e
R10: dffffc0000000000 R11: fffffbfff1f02f2f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92001cbae94
irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lockdep_unregister_key+0x326/0x3a0 kernel/locking/lockdep.c:6616
Code: 18 0f 84 d1 fd ff ff e8 b8 04 bc 09 89 c7 e8 21 08 00 00 e9 53 fe ff ff e8 d7 05 bc 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: 0000:ffffc9000e5d7650 EFLAGS: 00000246
RAX: 766ab47d1f7d9700 RBX: ffff88807ae0ca68 RCX: 766ab47d1f7d9700
RDX: ffffffff934173d8 RSI: ffffffff8d79b3da RDI: ffffffff8bc01ce0
RBP: ffff888034b60000 R08: ffffffff81abe678 R09: ffffffff8df419e0
R10: dffffc0000000000 R11: fffffbfff1f02f2f R12: 0000000000000000
R13: ffff88807ae0ca69 R14: 0000000000001000 R15: 0000000000000a07
__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
ops_exit_rtnl_list net/core/net_namespace.c:187 [inline]
ops_undo_list+0x3dc/0x990 net/core/net_namespace.c:248
cleanup_net+0x4d8/0x7a0 net/core/net_namespace.c:696
process_one_work kernel/workqueue.c:3257 [inline]
process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:213
Code: c7 60 33 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 6e 67 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: 0000:ffffc900000074a0 EFLAGS: 00010286
RAX: 0000000000000087 RBX: dffffc0000000000 RCX: 766ab47d1f7d9700
RDX: 0000000000000100 RSI: 0000000000000101 RDI: 0000000000000000
RBP: 0000000000000180 R08: ffffc900000071a7 R09: 1ffff92000000e34
R10: dffffc0000000000 R11: fffff52000000e35 R12: ffff88806f29fa10
R13: ffff888061088680 R14: ffff888061088668 R15: 0000000000000058
FS: 0000000000000000(0000) GS:ffff888125e44000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002da1fffc CR3: 0000000079122000 CR4: 00000000003526f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffeff7ff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 24 20 and $0x20,%al
2: f6 44 24 21 02 testb $0x2,0x21(%rsp)
7: 74 0c je 0x15
9: 90 nop
a: 0f 0b ud2
c: 48 f7 03 10 00 00 00 testq $0x10,(%rbx)
13: 74 64 je 0x79
15: bf 01 00 00 00 mov $0x1,%edi
1a: e8 eb 15 35 f6 call 0xf635160a
1f: e8 46 93 6d f6 call 0xf66d936a
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 1b a8 ff ff call 0xffffa84a <-- trapping instruction
2f: 48 c7 44 24 40 00 00 movq $0x0,0x40(%rsp)
36: 00 00
38: 9c pushf
39: 8f 44 24 40 pop 0x40(%rsp)
3d: 8b .byte 0x8b
3e: 44 rex.R
3f: 24 .byte 0x24