------------[ cut here ]------------ kernel BUG at net/ipv4/ip_output.c:775! invalid opcode: 0000 [#1] SMP KASAN CPU: 0 PID: 19991 Comm: syz-executor0 Not tainted 4.18.0-rc6+ #167 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_do_fragment+0x2436/0x2aa0 net/ipv4/ip_output.c:775 Code: 8b 8d 70 fe ff ff e9 99 e8 ff ff 4c 89 ef e8 c1 77 40 fc e9 7b e9 ff ff 4c 89 f7 e8 b4 77 40 fc e9 f3 e5 ff ff e8 ea 9b 02 fc <0f> 0b 4c 89 e7 e8 a0 77 40 fc e9 b7 e8 ff ff 4c 89 f7 89 8d 70 fe RSP: 0018:ffff8801d0286880 EFLAGS: 00010293 RAX: ffff8801b3a64780 RBX: ffff8801d972d5c0 RCX: ffffffff85796616 RDX: 0000000000000000 RSI: ffffffff85797c66 RDI: 0000000000000005 RBP: ffff8801d0286a58 R08: ffff8801b3a64780 R09: ffffed00354f0032 R10: ffffed00354f0034 R11: ffff8801aa7801a3 R12: ffff8801d972d684 R13: 00000000fffffff2 R14: ffff8801d972d690 R15: dffffc0000000000 FS: 00007f2b29944700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000728000 CR3: 00000001c5a2b000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip_fragment.constprop.49+0x179/0x240 net/ipv4/ip_output.c:548 ip_finish_output+0x6e4/0xfa0 net/ipv4/ip_output.c:315 NF_HOOK_COND include/linux/netfilter.h:276 [inline] ip_output+0x223/0x880 net/ipv4/ip_output.c:405 dst_output include/net/dst.h:444 [inline] ip_local_out+0xc5/0x1b0 net/ipv4/ip_output.c:124 iptunnel_xmit+0x53b/0x800 net/ipv4/ip_tunnel_core.c:91 ip_tunnel_xmit+0x1598/0x3af1 net/ipv4/ip_tunnel.c:778 __gre_xmit+0x5b7/0x950 net/ipv4/ip_gre.c:449 ipgre_xmit+0x3e8/0xb50 net/ipv4/ip_gre.c:701 __netdev_start_xmit include/linux/netdevice.h:4148 [inline] netdev_start_xmit include/linux/netdevice.h:4157 [inline] xmit_one net/core/dev.c:3034 [inline] dev_hard_start_xmit+0x26c/0xc30 net/core/dev.c:3050 __dev_queue_xmit+0x29c2/0x38e0 net/core/dev.c:3569 dev_queue_xmit+0x17/0x20 net/core/dev.c:3602 __bpf_tx_skb net/core/filter.c:1993 [inline] __bpf_redirect_common net/core/filter.c:2031 [inline] __bpf_redirect+0x563/0xa80 net/core/filter.c:2038 ____bpf_clone_redirect net/core/filter.c:2071 [inline] bpf_clone_redirect+0x2f6/0x490 net/core/filter.c:2043 bpf_prog_bebbfe2050753572+0xe5c/0x1000 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 8efde2b6612ed290 ]--- RIP: 0010:ip_do_fragment+0x2436/0x2aa0 net/ipv4/ip_output.c:775 Code: 8b 8d 70 fe ff ff e9 99 e8 ff ff 4c 89 ef e8 c1 77 40 fc e9 7b e9 ff ff 4c 89 f7 e8 b4 77 40 fc e9 f3 e5 ff ff e8 ea 9b 02 fc <0f> 0b 4c 89 e7 e8 a0 77 40 fc e9 b7 e8 ff ff 4c 89 f7 89 8d 70 fe RSP: 0018:ffff8801d0286880 EFLAGS: 00010293 RAX: ffff8801b3a64780 RBX: ffff8801d972d5c0 RCX: ffffffff85796616 RDX: 0000000000000000 RSI: ffffffff85797c66 RDI: 0000000000000005 RBP: ffff8801d0286a58 R08: ffff8801b3a64780 R09: ffffed00354f0032 R10: ffffed00354f0034 R11: ffff8801aa7801a3 R12: ffff8801d972d684 R13: 00000000fffffff2 R14: ffff8801d972d690 R15: dffffc0000000000 FS: 00007f2b29944700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000728000 CR3: 00000001c5a2b000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400