IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 8021q: adding VLAN 0 to HW filter on device team0 ================================================================== BUG: KMSAN: uninit-value in ip_tunnel_xmit+0x5dc/0x37c0 net/ipv4/ip_tunnel.c:645 CPU: 0 PID: 4531 Comm: syz-executor780 Not tainted 4.17.0+ #18 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:113 kmsan_report+0x188/0x2a0 mm/kmsan/kmsan.c:1465 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:650 ip_tunnel_xmit+0x5dc/0x37c0 net/ipv4/ip_tunnel.c:645 __gre_xmit net/ipv4/ip_gre.c:449 [inline] ipgre_xmit+0xe16/0xef0 net/ipv4/ip_gre.c:689 __netdev_start_xmit include/linux/netdevice.h:4087 [inline] netdev_start_xmit include/linux/netdevice.h:4096 [inline] xmit_one net/core/dev.c:3053 [inline] dev_hard_start_xmit+0x5f6/0xc80 net/core/dev.c:3069 __dev_queue_xmit+0x2ad2/0x3540 net/core/dev.c:3584 dev_queue_xmit+0x4b/0x60 net/core/dev.c:3617 packet_snd net/packet/af_packet.c:2953 [inline] packet_sendmsg+0x818b/0x8cc0 net/packet/af_packet.c:2978 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg net/socket.c:639 [inline] ___sys_sendmsg+0xec8/0x1320 net/socket.c:2117 __sys_sendmsg net/socket.c:2155 [inline] __do_sys_sendmsg net/socket.c:2164 [inline] __se_sys_sendmsg net/socket.c:2162 [inline] __x64_sys_sendmsg+0x331/0x460 net/socket.c:2162 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x441199 RSP: 002b:00007ffe2a0e1658 EFLAGS: 00000213 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441199 RDX: 0000000000000000 RSI: 0000000020001540 RDI: 0000000000000003 RBP: 00000000006cc018 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000020 R11: 0000000000000213 R12: 0000000000402100 R13: 0000000000402190 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:312 [inline] kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:222 kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:348 kmsan_slab_alloc+0x10/0x20 mm/kmsan/kmsan.c:355 slab_post_alloc_hook mm/slab.h:446 [inline] slab_alloc_node mm/slub.c:2753 [inline] __kmalloc_node_track_caller+0xb35/0x11b0 mm/slub.c:4395 __kmalloc_reserve net/core/skbuff.c:138 [inline] __alloc_skb+0x2cb/0x9e0 net/core/skbuff.c:206 alloc_skb include/linux/skbuff.h:988 [inline] alloc_skb_with_frags+0x1e6/0xb80 net/core/skbuff.c:5254 sock_alloc_send_pskb+0xb56/0x11a0 net/core/sock.c:2088 packet_alloc_skb net/packet/af_packet.c:2810 [inline] packet_snd net/packet/af_packet.c:2901 [inline] packet_sendmsg+0x6672/0x8cc0 net/packet/af_packet.c:2978 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg net/socket.c:639 [inline] ___sys_sendmsg+0xec8/0x1320 net/socket.c:2117 __sys_sendmsg net/socket.c:2155 [inline] __do_sys_sendmsg net/socket.c:2164 [inline] __se_sys_sendmsg net/socket.c:2162 [inline] __x64_sys_sendmsg+0x331/0x460 net/socket.c:2162 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x63/0xe7 ==================================================================