netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. ------------[ cut here ]------------ kernel BUG at net/core/dev.c:3233! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 10772 Comm: syz-executor.2 Not tainted 5.11.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:skb_checksum_help+0x4c1/0x5b0 net/core/dev.c:3233 Code: fa 45 89 ec e9 59 ff ff ff e8 db ed 7b fa 48 89 ef 41 bc ea ff ff ff e8 1d f9 ff ff eb c7 e8 c6 ed 7b fa 0f 0b e8 bf ed 7b fa <0f> 0b 4c 89 f7 e8 95 c8 be fa e9 6c fb ff ff e8 9b c8 be fa e9 1b RSP: 0018:ffffc90002d2f120 EFLAGS: 00010216 RAX: 000000000000b40a RBX: 00000000000003d2 RCX: ffffc9000d906000 RDX: 0000000000040000 RSI: ffffffff86f6e3a1 RDI: 0000000000000003 RBP: ffff88802a452c80 R08: 00000000000003d4 R09: 0000000000000000 R10: ffffffff86f6e26d R11: 0000000000000000 R12: 00000000000000e0 R13: 00000000000003d4 R14: ffff88802a452d00 R15: 00000000000003d2 FS: 00007f3068f15700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c529000 CR3: 0000000054938000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_csum_hwoffload_help+0x8b/0x130 net/core/dev.c:3624 validate_xmit_skb+0xbd5/0xee0 net/core/dev.c:3667 __dev_queue_xmit+0x988/0x2dd0 net/core/dev.c:4142 neigh_hh_output include/net/neighbour.h:499 [inline] neigh_output include/net/neighbour.h:508 [inline] ip_finish_output2+0xeb6/0x21b0 net/ipv4/ip_output.c:230 __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x396/0x640 net/ipv4/ip_output.c:290 ip_finish_output+0x35/0x200 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip_output+0x196/0x310 net/ipv4/ip_output.c:432 dst_output include/net/dst.h:441 [inline] ip_local_out+0xaf/0x1a0 net/ipv4/ip_output.c:126 iptunnel_xmit+0x5a3/0x9c0 net/ipv4/ip_tunnel_core.c:82 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0xde1/0x2f60 drivers/net/geneve.c:1059 __netdev_start_xmit include/linux/netdevice.h:4776 [inline] netdev_start_xmit include/linux/netdevice.h:4790 [inline] xmit_one net/core/dev.c:3574 [inline] dev_hard_start_xmit+0x1eb/0x920 net/core/dev.c:3590 sch_direct_xmit+0x2e1/0xbd0 net/sched/sch_generic.c:313 qdisc_restart net/sched/sch_generic.c:376 [inline] __qdisc_run+0x4ba/0x15f0 net/sched/sch_generic.c:384 __dev_xmit_skb net/core/dev.c:3813 [inline] __dev_queue_xmit+0x1a30/0x2dd0 net/core/dev.c:4119 packet_snd net/packet/af_packet.c:3006 [inline] packet_sendmsg+0x2413/0x52b0 net/packet/af_packet.c:3031 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 __sys_sendto+0x21c/0x320 net/socket.c:1975 __do_sys_sendto net/socket.c:1987 [inline] __se_sys_sendto net/socket.c:1983 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1983 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x465b09 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:00007f3068f15188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000000003287 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00000000004b069f R08: 0000000000000000 R09: 00000000000002ff R10: 0000000004000002 R11: 0000000000000246 R12: 000000000056bf60 R13: 0000000000a9fb1f R14: 00007f3068f15300 R15: 0000000000022000 Modules linked in: ---[ end trace bf0d4b5e7c0591cb ]--- RIP: 0010:skb_checksum_help+0x4c1/0x5b0 net/core/dev.c:3233 Code: fa 45 89 ec e9 59 ff ff ff e8 db ed 7b fa 48 89 ef 41 bc ea ff ff ff e8 1d f9 ff ff eb c7 e8 c6 ed 7b fa 0f 0b e8 bf ed 7b fa <0f> 0b 4c 89 f7 e8 95 c8 be fa e9 6c fb ff ff e8 9b c8 be fa e9 1b RSP: 0018:ffffc90002d2f120 EFLAGS: 00010216 RAX: 000000000000b40a RBX: 00000000000003d2 RCX: ffffc9000d906000 RDX: 0000000000040000 RSI: ffffffff86f6e3a1 RDI: 0000000000000003 RBP: ffff88802a452c80 R08: 00000000000003d4 R09: 0000000000000000 R10: ffffffff86f6e26d R11: 0000000000000000 R12: 00000000000000e0 R13: 00000000000003d4 R14: ffff88802a452d00 R15: 00000000000003d2 FS: 00007f3068f15700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c529000 CR3: 0000000054938000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400