skbuff: skb_under_panic: text:ffffffff844f24a0 len:900 put:20 head:ffff88815a71a000 data:ffff88815a719ff8 tail:0x37c end:0x6c0 dev:gre4
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:120!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 6317 Comm: kworker/1:7 Not tainted 6.1.25-syzkaller-00144-gaf58dc05bbd2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Workqueue: mld mld_ifc_work
RIP: 0010:skb_panic net/core/skbuff.c:120 [inline]
RIP: 0010:skb_under_panic+0x14c/0x150 net/core/skbuff.c:130
Code: e0 1f f9 85 48 c7 c6 15 a5 41 86 48 8b 55 c0 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 53 41 55 41 54 41 57 e8 6c 20 0e 01 48 83 c4 20 <0f> 0b 66 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 18 41
RSP: 0018:ffffc90000cd70a0 EFLAGS: 00010286
RAX: 0000000000000087 RBX: ffff888108c68000 RCX: 71e8af2215cc6000
RDX: 0000000000000000 RSI: 0000000000000400 RDI: 0000000000000000
RBP: ffffc90000cd70e0 R08: ffffffff81597205 R09: fffff5200019ad69
R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000000037c
R13: 00000000000006c0 R14: dffffc0000000000 R15: ffff88815a719ff8
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa241ed56be CR3: 000000010eca3000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 00007ffffffffff4
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
skb_push+0xf3/0x120 net/core/skbuff.c:2171
iptunnel_xmit+0x2d0/0x940 net/ipv4/ip_tunnel_core.c:67
ip_tunnel_xmit+0x218f/0x2ae0 net/ipv4/ip_tunnel.c:813
__gre_xmit net/ipv4/ip_gre.c:469 [inline]
ipgre_xmit+0x7ac/0xaa0 net/ipv4/ip_gre.c:661
__netdev_start_xmit include/linux/netdevice.h:4849 [inline]
netdev_start_xmit include/linux/netdevice.h:4863 [inline]
xmit_one net/core/dev.c:3600 [inline]
dev_hard_start_xmit+0x1de/0x630 net/core/dev.c:3616
__dev_queue_xmit+0x18c2/0x3660 net/core/dev.c:4266
dev_queue_xmit include/linux/netdevice.h:3017 [inline]
neigh_direct_output+0x17/0x20 net/core/neighbour.c:1623
neigh_output include/net/neighbour.h:546 [inline]
ip6_finish_output2+0x104a/0x1820 net/ipv6/ip6_output.c:134
__ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
ip6_finish_output+0x5d9/0xb60 net/ipv6/ip6_output.c:206
NF_HOOK_COND include/linux/netfilter.h:291 [inline]
ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:227
dst_output include/net/dst.h:444 [inline]
NF_HOOK include/linux/netfilter.h:302 [inline]
mld_sendpack+0x803/0xe40 net/ipv6/mcast.c:1820
mld_send_cr net/ipv6/mcast.c:2121 [inline]
mld_ifc_work+0x7dc/0xba0 net/ipv6/mcast.c:2653
process_one_work+0x73d/0xcb0 kernel/workqueue.c:2296
worker_thread+0xa5d/0x1260 kernel/workqueue.c:2443
kthread+0x26d/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:skb_panic net/core/skbuff.c:120 [inline]
RIP: 0010:skb_under_panic+0x14c/0x150 net/core/skbuff.c:130
Code: e0 1f f9 85 48 c7 c6 15 a5 41 86 48 8b 55 c0 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 53 41 55 41 54 41 57 e8 6c 20 0e 01 48 83 c4 20 <0f> 0b 66 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 18 41
RSP: 0018:ffffc90000cd70a0 EFLAGS: 00010286
RAX: 0000000000000087 RBX: ffff888108c68000 RCX: 71e8af2215cc6000
RDX: 0000000000000000 RSI: 0000000000000400 RDI: 0000000000000000
RBP: ffffc90000cd70e0 R08: ffffffff81597205 R09: fffff5200019ad69
R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000000037c
R13: 00000000000006c0 R14: dffffc0000000000 R15: ffff88815a719ff8
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa241ed56be CR3: 000000010eca3000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 00007ffffffffff4
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400