protocol 894f is buggy, dev ip6gretap0
------------[ cut here ]------------
WARNING: CPU: 0 PID: 20054 at include/linux/skbuff.h:2723 pskb_may_pull_reason include/linux/skbuff.h:2723 [inline]
WARNING: CPU: 0 PID: 20054 at include/linux/skbuff.h:2723 pskb_may_pull include/linux/skbuff.h:2739 [inline]
WARNING: CPU: 0 PID: 20054 at include/linux/skbuff.h:2723 pskb_network_may_pull include/linux/skbuff.h:3054 [inline]
WARNING: CPU: 0 PID: 20054 at include/linux/skbuff.h:2723 pskb_inet_may_pull include/net/ip_tunnels.h:361 [inline]
WARNING: CPU: 0 PID: 20054 at include/linux/skbuff.h:2723 ip6gre_tunnel_xmit+0x49d/0x680 net/ipv6/ip6_gre.c:901
Modules linked in:
CPU: 0 PID: 20054 Comm: syz-executor202 Not tainted 6.8.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:pskb_may_pull_reason include/linux/skbuff.h:2723 [inline]
RIP: 0010:pskb_may_pull include/linux/skbuff.h:2739 [inline]
RIP: 0010:pskb_network_may_pull include/linux/skbuff.h:3054 [inline]
RIP: 0010:pskb_inet_may_pull include/net/ip_tunnels.h:361 [inline]
RIP: 0010:ip6gre_tunnel_xmit+0x49d/0x680 net/ipv6/ip6_gre.c:901
Code: 00 00 00 ba 04 00 00 00 e8 c0 68 ee ff 85 ed 0f 89 92 01 00 00 e9 56 01 00 00 31 ed 85 ed 0f 89 83 01 00 00 e9 47 01 00 00 90 <0f> 0b 90 e9 be fb ff ff 39 c1 0f 82 36 01 00 00 4c 89 e7 e8 eb c0
RSP: 0018:ffffc900031cbac0 EFLAGS: 00010286
RAX: 00000000ffffff5a RBX: ffff8881053e2601 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88810dfb3000 RDI: ffff8881053e2600
RBP: ffffffff832f25d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff82ac6670 R12: ffff8881053e2600
R13: ffff8881053e2600 R14: ffff88810dfb3000 R15: ffff8881053e2000
FS:  000055555661f380(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003000 CR3: 000000010733e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __netdev_start_xmit include/linux/netdevice.h:4990 [inline]
 netdev_start_xmit include/linux/netdevice.h:5004 [inline]
 xmit_one net/core/dev.c:3530 [inline]
 dev_hard_start_xmit+0xdb/0x280 net/core/dev.c:3546
 sch_direct_xmit+0xe5/0x290 net/sched/sch_generic.c:342
 __dev_xmit_skb net/core/dev.c:3759 [inline]
 __dev_queue_xmit+0x753/0xdc0 net/core/dev.c:4300
 packet_snd net/packet/af_packet.c:3081 [inline]
 packet_sendmsg+0x12a2/0x16f0 net/packet/af_packet.c:3113
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x8e/0xb0 net/socket.c:745
 __sys_sendto+0x23c/0x290 net/socket.c:2191
 __do_sys_sendto net/socket.c:2203 [inline]
 __se_sys_sendto net/socket.c:2199 [inline]
 __x64_sys_sendto+0x21/0x30 net/socket.c:2199
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xe6/0x200 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f576f195b69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff96eda5d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f576f195b69
RDX: 0000000000003287 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 00000000000f4240 R08: 0000000000000000 R09: 00000000000002ff
R10: 0000000004000002 R11: 0000000000000246 R12: 00007fff96eda640
R13: 000000000005ec1e R14: 00007fff96eda60c R15: 0000000000000003
 </TASK>