------------[ cut here ]------------ kernel BUG at net/core/dev.c:3246! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 10012 Comm: syz-executor.0 Not tainted 5.16.0-rc4-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:3246 Code: ff 44 89 f9 80 e1 07 fe c1 38 c1 0f 8c 44 fe ff ff 4c 89 ff e8 75 f4 af f9 e9 37 fe ff ff e8 6b 20 64 f9 0f 0b e8 64 20 64 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:ffffc9000434ebc0 EFLAGS: 00010283 RAX: ffffffff8820771c RBX: 00000000000000e0 RCX: 0000000000040000 RDX: ffffc90002b94000 RSI: 00000000000087b2 RDI: 00000000000087b3 RBP: 00000000000003d4 R08: ffffffff882074a8 R09: fffff52000869d6a R10: fffff52000869d6a R11: 0000000000000000 R12: ffff888035d10cf4 R13: ffff888035d10c80 R14: dffffc0000000000 R15: 00000000000003d2 FS: 00007fc88bee2700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0586109dd8 CR3: 000000007ae8a000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_csum_hwoffload_help net/core/dev.c:3651 [inline] validate_xmit_skb+0xb1f/0x1010 net/core/dev.c:3694 __dev_queue_xmit+0x166d/0x35c0 net/core/dev.c:4220 neigh_hh_output include/net/neighbour.h:511 [inline] neigh_output include/net/neighbour.h:525 [inline] ip_finish_output2+0xcf0/0x1990 net/ipv4/ip_output.c:221 iptunnel_xmit+0x4d8/0x8c0 net/ipv4/ip_tunnel_core.c:82 udp_tunnel_xmit_skb+0x1c8/0x2d0 net/ipv4/udp_tunnel_core.c:171 geneve_xmit_skb drivers/net/geneve.c:971 [inline] geneve_xmit+0x1322/0x2690 drivers/net/geneve.c:1082 __netdev_start_xmit include/linux/netdevice.h:4994 [inline] netdev_start_xmit include/linux/netdevice.h:5008 [inline] xmit_one net/core/dev.c:3590 [inline] dev_hard_start_xmit+0x20b/0x450 net/core/dev.c:3606 sch_direct_xmit+0x292/0x5b0 net/sched/sch_generic.c:342 qdisc_restart net/sched/sch_generic.c:407 [inline] __qdisc_run+0x9dc/0x1cd0 net/sched/sch_generic.c:415 __dev_xmit_skb net/core/dev.c:3875 [inline] __dev_queue_xmit+0xedd/0x35c0 net/core/dev.c:4194 packet_snd net/packet/af_packet.c:3052 [inline] packet_sendmsg+0x4ca1/0x6750 net/packet/af_packet.c:3079 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg net/socket.c:724 [inline] __sys_sendto+0x42e/0x5b0 net/socket.c:2036 __do_sys_sendto net/socket.c:2048 [inline] __se_sys_sendto net/socket.c:2044 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2044 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fc88cf6caf9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc88bee2188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fc88d07ff60 RCX: 00007fc88cf6caf9 RDX: 0000000000003287 RSI: 0000000020000080 RDI: 0000000000000004 RBP: 00007fc88cfc6ff7 R08: 0000000000000000 R09: 00000000000002ff R10: 0000000004000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd440fdb9f R14: 00007fc88bee2300 R15: 0000000000022000 Modules linked in: ---[ end trace 824b2e170a3a0e06 ]--- RIP: 0010:skb_checksum_help+0x55c/0x560 net/core/dev.c:3246 Code: ff 44 89 f9 80 e1 07 fe c1 38 c1 0f 8c 44 fe ff ff 4c 89 ff e8 75 f4 af f9 e9 37 fe ff ff e8 6b 20 64 f9 0f 0b e8 64 20 64 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:ffffc9000434ebc0 EFLAGS: 00010283 RAX: ffffffff8820771c RBX: 00000000000000e0 RCX: 0000000000040000 RDX: ffffc90002b94000 RSI: 00000000000087b2 RDI: 00000000000087b3 RBP: 00000000000003d4 R08: ffffffff882074a8 R09: fffff52000869d6a R10: fffff52000869d6a R11: 0000000000000000 R12: ffff888035d10cf4 R13: ffff888035d10c80 R14: dffffc0000000000 R15: 00000000000003d2 FS: 00007fc88bee2700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0586109dd8 CR3: 000000007ae8a000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400