netlink: 24 bytes leftover after parsing attributes in process `syz-executor125'. device veth1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 8004 Comm: syz-executor125 Not tainted 4.14.241-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88809552e200 task.stack: ffff888095e18000 RIP: 0010:__write_once_size include/linux/compiler.h:210 [inline] RIP: 0010:__hlist_del include/linux/list.h:679 [inline] RIP: 0010:hlist_del_rcu include/linux/rculist.h:427 [inline] RIP: 0010:vxlan_fdb_destroy+0xb4/0x1f0 drivers/net/vxlan.c:787 RSP: 0018:ffff888095e1f150 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff8880ab48ac80 RCX: 1ffff11012bc3e20 RDX: 1bd5a00000000040 RSI: ffff8880ab48ac80 RDI: ffff8880ab48ac88 RBP: 0000000000000000 R08: ffffffff8b9b6358 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200 R13: 0000000000000000 R14: ffff888095e1f250 R15: ffff8880b1abe7c0 FS: 00007ff339afa700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562c2450c8f0 CR3: 00000000b3c67000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __vxlan_dev_create+0x3b0/0x710 drivers/net/vxlan.c:3283 vxlan_newlink+0xa3/0xe0 drivers/net/vxlan.c:3504 rtnl_newlink+0xfab/0x1860 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4320 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2435 netlink_unicast_kernel net/netlink/af_netlink.c:1289 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1315 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1880 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 sock_no_sendpage+0xe2/0x110 net/core/sock.c:2595 kernel_sendpage net/socket.c:3407 [inline] sock_sendpage+0xdf/0x140 net/socket.c:871 pipe_to_sendpage+0x226/0x2d0 fs/splice.c:451 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x326/0x7a0 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0xc1/0x110 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1147 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0xd59/0x1380 fs/splice.c:1382 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x444e09 RSP: 002b:00007ff339afa2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00000000004ca458 RCX: 0000000000444e09 RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00000000004ca450 R08: 000000000004ffe2 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ca45c R13: 000000000049a004 R14: 0000006e616c7876 R15: 0000000000022000 Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 11 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 09 01 00 00 48 85 ed 49 89 2c 24 74 28 e8 14 RIP: __write_once_size include/linux/compiler.h:210 [inline] RSP: ffff888095e1f150 RIP: __hlist_del include/linux/list.h:679 [inline] RSP: ffff888095e1f150 RIP: hlist_del_rcu include/linux/rculist.h:427 [inline] RSP: ffff888095e1f150 RIP: vxlan_fdb_destroy+0xb4/0x1f0 drivers/net/vxlan.c:787 RSP: ffff888095e1f150 ---[ end trace 62884d15c62a6551 ]---