------------[ cut here ]------------ kernel BUG at include/linux/skbuff.h:2150! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 9797 Comm: syz-executor.3 Not tainted 4.14.304-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 task: ffff88809a0bc3c0 task.stack: ffff88809a3e0000 RIP: 0010:__skb_pull include/linux/skbuff.h:2150 [inline] RIP: 0010:skb_pull_inline include/linux/skbuff.h:2156 [inline] RIP: 0010:skb_pull net/core/skbuff.c:1745 [inline] RIP: 0010:skb_pull+0xe1/0x100 net/core/skbuff.c:1743 RSP: 0018:ffff88809a3e7758 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff888097c770c0 RCX: ffffc90009601000 RDX: 00000000000008a4 RSI: ffffffff85bf79b1 RDI: ffff888097c77144 RBP: 0000000000000018 R08: 00000000000000c0 R09: ffffed101332c8dd R10: ffff8880999646ef R11: 0000000000000000 R12: 000000000000fcc9 R13: ffff888097c77198 R14: ffff888097c77190 R15: ffff8880999645a0 FS: 00007f1d9717c700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200005c0 CR3: 00000000a27a6000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ipgre_xmit+0x26f/0x780 net/ipv4/ip_gre.c:658 __netdev_start_xmit include/linux/netdevice.h:4054 [inline] netdev_start_xmit include/linux/netdevice.h:4063 [inline] xmit_one net/core/dev.c:3005 [inline] dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021 __dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521 packet_snd+0x13aa/0x26f0 net/packet/af_packet.c:3031 packet_sendmsg+0x12ed/0x33a0 net/packet/af_packet.c:3060 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 SYSC_sendto net/socket.c:1763 [inline] SyS_sendto+0x1c7/0x2c0 net/socket.c:1731 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f1d98c0a0c9 RSP: 002b:00007f1d9717c168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f1d98d29f80 RCX: 00007f1d98c0a0c9 RDX: 000000000000fceb RSI: 0000000020000080 RDI: 0000000000000004 RBP: 00007f1d98c65ae9 R08: 0000000000000000 R09: 00000000fffffe1b R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdce140c4f R14: 00007f1d9717c300 R15: 0000000000022000 Code: 00 00 4c 89 a3 d8 00 00 00 e8 ec da 95 fb 4c 89 e0 5b 5d 41 5c c3 e8 df da 95 fb 45 31 e4 5b 4c 89 e0 5d 41 5c c3 e8 cf da 95 fb <0f> 0b e8 18 9d bf fb e9 49 ff ff ff e8 0e 9d bf fb eb 8e e8 77 RIP: __skb_pull include/linux/skbuff.h:2150 [inline] RSP: ffff88809a3e7758 RIP: skb_pull_inline include/linux/skbuff.h:2156 [inline] RSP: ffff88809a3e7758 RIP: skb_pull net/core/skbuff.c:1745 [inline] RSP: ffff88809a3e7758 RIP: skb_pull+0xe1/0x100 net/core/skbuff.c:1743 RSP: ffff88809a3e7758 ---[ end trace 9758542eb6c5e296 ]---