skbuff: skb_under_panic: text:ffffffff8a121657 len:-1823514372 put:-1823514444 head:ffff88806b347400 data:ffff887fd7e5138c tail:0x88 end:0x180 dev:bond3
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:211!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 14367 Comm: syz.3.2347 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:211
Code: c7 80 fb 93 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 8e 0c 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:ffffc9001ad3eed8 EFLAGS: 00010286
RAX: 0000000000000098 RBX: dffffc0000000000 RCX: 2818e27e1f717300
RDX: ffffc9000c1c9000 RSI: 00000000000055ed RDI: 00000000000055ee
RBP: 0000000000000180 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa1f4 R12: ffff8880788fc790
R13: ffff88806b347400 R14: ffff887fd7e5138c R15: 0000000000000088
FS:  00007fab3b14f6c0(0000) GS:ffff888125d14000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c25046e CR3: 0000000074a12000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 skb_under_panic net/core/skbuff.c:221 [inline]
 skb_push+0xc3/0xe0 net/core/skbuff.c:2601
 ipgre_header+0x67/0x290 net/ipv4/ip_gre.c:895
 dev_hard_header include/linux/netdevice.h:3415 [inline]
 neigh_connected_output+0x283/0x460 net/core/neighbour.c:1619
 neigh_output include/net/neighbour.h:547 [inline]
 ip6_finish_output2+0xfb0/0x1480 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
 ndisc_send_ns net/ipv6/ndisc.c:670 [inline]
 ndisc_solicit+0x444/0x610 net/ipv6/ndisc.c:-1
 neigh_probe net/core/neighbour.c:1098 [inline]
 __neigh_event_send+0xf6d/0x1560 net/core/neighbour.c:1271
 neigh_event_send_probe include/net/neighbour.h:471 [inline]
 neigh_event_send include/net/neighbour.h:477 [inline]
 neigh_resolve_output+0x198/0x750 net/core/neighbour.c:1579
 neigh_output include/net/neighbour.h:547 [inline]
 ip6_finish_output2+0xfb0/0x1480 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
 ip6_send_skb+0x1d5/0x390 net/ipv6/ip6_output.c:1992
 udp_v6_send_skb+0xc17/0x1830 net/ipv6/udp.c:1439
 udp_v6_push_pending_frames+0x133/0x220 net/ipv6/udp.c:1466
 udpv6_sendmsg+0xf6b/0x24b0 net/ipv6/udp.c:1756
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0xe5/0x270 net/socket.c:729
 __sys_sendto+0x3bd/0x520 net/socket.c:2228
 __do_sys_sendto net/socket.c:2235 [inline]
 __se_sys_sendto net/socket.c:2231 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2231
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fab3a38ebe9
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:00007fab3b14f038 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fab3a5c5fa0 RCX: 00007fab3a38ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fab3a411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000040000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fab3a5c6038 R14: 00007fab3a5c5fa0 R15: 00007ffd1cacdfc8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:211
Code: c7 80 fb 93 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 8e 0c 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:ffffc9001ad3eed8 EFLAGS: 00010286
RAX: 0000000000000098 RBX: dffffc0000000000 RCX: 2818e27e1f717300
RDX: ffffc9000c1c9000 RSI: 00000000000055ed RDI: 00000000000055ee
RBP: 0000000000000180 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa1f4 R12: ffff8880788fc790
R13: ffff88806b347400 R14: ffff887fd7e5138c R15: 0000000000000088
FS:  00007fab3b14f6c0(0000) GS:ffff888125d14000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c25046e CR3: 0000000074a12000 CR4: 00000000003526f0