------------[ cut here ]------------ kernel BUG at net/core/dev.c:3264! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8650 Comm: syz-executor861 Not tainted 5.12.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:skb_checksum_help+0x55c/0x560 net/core/dev.c:3264 Code: ff 44 89 f9 80 e1 07 fe c1 38 c1 0f 8c 44 fe ff ff 4c 89 ff e8 05 12 f2 f9 e9 37 fe ff ff e8 cb 79 ab f9 0f 0b e8 c4 79 ab f9 <0f> 0b 66 90 41 57 41 56 41 55 41 54 53 49 89 fc 49 bd 00 00 00 00 RSP: 0018:ffffc90001f5ec60 EFLAGS: 00010293 RAX: ffffffff87d35d9c RBX: 00000000000000e0 RCX: ffff8880214bd4c0 RDX: 0000000000000000 RSI: 00000000000000e0 RDI: 00000000000003d4 RBP: 00000000000003d4 R08: ffffffff87d35b28 R09: fffff520003ebd7e R10: fffff520003ebd7e R11: 0000000000000000 R12: ffff88801339c434 R13: ffff88801339c3c0 R14: dffffc0000000000 R15: 00000000000003d2 FS: 00000000005a1300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002180 CR3: 000000001410b000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_csum_hwoffload_help net/core/dev.c:3666 [inline] validate_xmit_skb+0xb1f/0xff0 net/core/dev.c:3709 __dev_queue_xmit+0x1490/0x2cb0 net/core/dev.c:4185 neigh_hh_output include/net/neighbour.h:499 [inline] neigh_output include/net/neighbour.h:508 [inline] ip_finish_output2+0xcbf/0x19d0 net/ipv4/ip_output.c:230 iptunnel_xmit+0x46b/0x810 net/ipv4/ip_tunnel_core.c:82 udp_tunnel_xmit_skb+0x1c8/0x2d0 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:970 [inline] geneve_xmit+0x2037/0x2d20 drivers/net/geneve.c:1081 __netdev_start_xmit include/linux/netdevice.h:4825 [inline] netdev_start_xmit include/linux/netdevice.h:4839 [inline] xmit_one net/core/dev.c:3605 [inline] dev_hard_start_xmit+0x20b/0x450 net/core/dev.c:3621 sch_direct_xmit+0x25e/0xe40 net/sched/sch_generic.c:313 qdisc_restart net/sched/sch_generic.c:376 [inline] __qdisc_run+0xa4d/0x1a90 net/sched/sch_generic.c:384 __dev_xmit_skb net/core/dev.c:3855 [inline] __dev_queue_xmit+0x128c/0x2cb0 net/core/dev.c:4162 packet_snd net/packet/af_packet.c:3006 [inline] packet_sendmsg+0x4ccb/0x6620 net/packet/af_packet.c:3031 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg net/socket.c:674 [inline] __sys_sendto+0x541/0x720 net/socket.c:1977 __do_sys_sendto net/socket.c:1989 [inline] __se_sys_sendto net/socket.c:1985 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:1985 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x443ab9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd3f63c9e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443ab9 RDX: 0000000000003287 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000002ff R10: 0000000004000002 R11: 0000000000000246 R12: 00007ffd3f63ca10 R13: 00000000000f4240 R14: 000000000000cda4 R15: 00007ffd3f63ca04 Modules linked in: ---[ end trace 2d1083dce8174389 ]--- RIP: 0010:skb_checksum_help+0x55c/0x560 net/core/dev.c:3264 Code: ff 44 89 f9 80 e1 07 fe c1 38 c1 0f 8c 44 fe ff ff 4c 89 ff e8 05 12 f2 f9 e9 37 fe ff ff e8 cb 79 ab f9 0f 0b e8 c4 79 ab f9 <0f> 0b 66 90 41 57 41 56 41 55 41 54 53 49 89 fc 49 bd 00 00 00 00 RSP: 0018:ffffc90001f5ec60 EFLAGS: 00010293 RAX: ffffffff87d35d9c RBX: 00000000000000e0 RCX: ffff8880214bd4c0 RDX: 0000000000000000 RSI: 00000000000000e0 RDI: 00000000000003d4 RBP: 00000000000003d4 R08: ffffffff87d35b28 R09: fffff520003ebd7e R10: fffff520003ebd7e R11: 0000000000000000 R12: ffff88801339c434 R13: ffff88801339c3c0 R14: dffffc0000000000 R15: 00000000000003d2 FS: 00000000005a1300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002180 CR3: 000000001410b000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400