skbuff: skb_under_panic: text:ffffffff8a25a148 len:112 put:40 head:ffff88805b7b0340 data:ffff88805b7b0328 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: 1 UID: 0 PID: 18254 Comm: syz.1.3392 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 e0 15 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: 0018:ffffc90000a084a0 EFLAGS: 00010286
RAX: 0000000000000087 RBX: dffffc0000000000 RCX: 9d224b0b188de500
RDX: 0000000000000100 RSI: 0000000080000101 RDI: 0000000000000000
RBP: 0000000000000180 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bbae20 R12: ffff888031f1add0
R13: ffff88805b7b0340 R14: ffff88805b7b0328 R15: 0000000000000058
FS: 00007fc359a626c0(0000) GS:ffff888125f4f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002000 CR3: 0000000037a0e000 CR4: 00000000003526f0
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:3429 [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:626
__do_softirq kernel/softirq.c:660 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:727
irq_exit_rcu+0x9/0x30 kernel/softirq.c:743
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:finish_task_switch+0x242/0x940 kernel/sched/core.c:5115
Code: 0f 84 c2 01 00 00 48 85 db 0f 85 e9 01 00 00 e9 6b 05 00 00 4c 8b 75 d0 4c 89 e7 e8 48 e8 c9 09 e8 a3 73 37 00 fb 4c 8b 65 c0 <49> 8d bc 24 48 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc9000410f698 EFLAGS: 00000282
RAX: 9d224b0b188de500 RBX: 0000000000000000 RCX: 9d224b0b188de500
RDX: 0000000000000000 RSI: ffffffff8d783537 RDI: ffffffff8bc018e0
RBP: ffffc9000410f6f0 R08: ffffffff8f813377 R09: 1ffffffff1f0266e
R10: dffffc0000000000 R11: fffffbfff1f0266f R12: ffff8880319c0000
R13: dffffc0000000000 R14: ffff88801abb8000 R15: ffff8880b873b498
context_switch kernel/sched/core.c:5260 [inline]
__schedule+0x14c4/0x5000 kernel/sched/core.c:6864
__schedule_loop kernel/sched/core.c:6946 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6961
schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
snd_rawmidi_write+0x3a8/0xbc0 sound/core/rawmidi.c:1616
do_loop_readv_writev fs/read_write.c:850 [inline]
vfs_writev+0x4b6/0x960 fs/read_write.c:1059
do_writev+0x14d/0x2d0 fs/read_write.c:1103
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc358b8f749
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:00007fc359a62038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007fc358de5fa0 RCX: 00007fc358b8f749
RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000005
RBP: 00007fc358c13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc358de6038 R14: 00007fc358de5fa0 R15: 00007ffecce05c98
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:213
Code: c7 e0 15 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: 0018:ffffc90000a084a0 EFLAGS: 00010286
RAX: 0000000000000087 RBX: dffffc0000000000 RCX: 9d224b0b188de500
RDX: 0000000000000100 RSI: 0000000080000101 RDI: 0000000000000000
RBP: 0000000000000180 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bbae20 R12: ffff888031f1add0
R13: ffff88805b7b0340 R14: ffff88805b7b0328 R15: 0000000000000058
FS: 00007fc359a626c0(0000) GS:ffff888125f4f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002000 CR3: 0000000037a0e000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 0f 84 c2 01 00 00 je 0x1c8
6: 48 85 db test %rbx,%rbx
9: 0f 85 e9 01 00 00 jne 0x1f8
f: e9 6b 05 00 00 jmp 0x57f
14: 4c 8b 75 d0 mov -0x30(%rbp),%r14
18: 4c 89 e7 mov %r12,%rdi
1b: e8 48 e8 c9 09 call 0x9c9e868
20: e8 a3 73 37 00 call 0x3773c8
25: fb sti
26: 4c 8b 65 c0 mov -0x40(%rbp),%r12
* 2a: 49 8d bc 24 48 16 00 lea 0x1648(%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