===================================================== BUG: KMSAN: uninit-value in ip_route_output_key_hash_rcu+0x1e7/0x3930 net/ipv4/route.c:2660 ip_route_output_key_hash_rcu+0x1e7/0x3930 net/ipv4/route.c:2660 ip_route_output_key_hash+0x13e/0x1b0 net/ipv4/route.c:2643 __ip_route_output_key include/net/route.h:137 [inline] xfrmi_xmit+0x4e5/0x2630 net/xfrm/xfrm_interface_core.c:561 __netdev_start_xmit include/linux/netdevice.h:4883 [inline] netdev_start_xmit include/linux/netdevice.h:4897 [inline] xmit_one net/core/dev.c:3580 [inline] dev_hard_start_xmit+0x253/0xa20 net/core/dev.c:3596 __dev_queue_xmit+0x3c7f/0x5ac0 net/core/dev.c:4246 dev_queue_xmit+0x2f/0x40 include/linux/netdevice.h:3053 packet_snd net/packet/af_packet.c:3073 [inline] packet_sendmsg+0x89c5/0x9ee0 net/packet/af_packet.c:3104 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0xa24/0xe40 net/socket.c:2501 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2555 __sys_sendmsg net/socket.c:2584 [inline] __do_sys_sendmsg net/socket.c:2593 [inline] __se_sys_sendmsg net/socket.c:2591 [inline] __x64_sys_sendmsg+0x36b/0x540 net/socket.c:2591 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Uninit was stored to memory at: decode_session4 net/xfrm/xfrm_policy.c:3377 [inline] __xfrm_decode_session+0x1611/0x2890 net/xfrm/xfrm_policy.c:3552 xfrm_decode_session include/net/xfrm.h:1210 [inline] xfrmi_xmit+0x205/0x2630 net/xfrm/xfrm_interface_core.c:554 __netdev_start_xmit include/linux/netdevice.h:4883 [inline] netdev_start_xmit include/linux/netdevice.h:4897 [inline] xmit_one net/core/dev.c:3580 [inline] dev_hard_start_xmit+0x253/0xa20 net/core/dev.c:3596 __dev_queue_xmit+0x3c7f/0x5ac0 net/core/dev.c:4246 dev_queue_xmit+0x2f/0x40 include/linux/netdevice.h:3053 packet_snd net/packet/af_packet.c:3073 [inline] packet_sendmsg+0x89c5/0x9ee0 net/packet/af_packet.c:3104 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0xa24/0xe40 net/socket.c:2501 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2555 __sys_sendmsg net/socket.c:2584 [inline] __do_sys_sendmsg net/socket.c:2593 [inline] __se_sys_sendmsg net/socket.c:2591 [inline] __x64_sys_sendmsg+0x36b/0x540 net/socket.c:2591 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Uninit was created at: slab_post_alloc_hook+0x12d/0xb60 mm/slab.h:774 slab_alloc_node mm/slub.c:3452 [inline] kmem_cache_alloc_node+0x543/0xab0 mm/slub.c:3497 kmalloc_reserve+0x148/0x470 net/core/skbuff.c:520 __alloc_skb+0x3a7/0x850 net/core/skbuff.c:606 alloc_skb include/linux/skbuff.h:1277 [inline] alloc_skb_with_frags+0xbd/0xbb0 net/core/skbuff.c:6318 sock_alloc_send_pskb+0xaad/0xc30 net/core/sock.c:2734 packet_alloc_skb net/packet/af_packet.c:2921 [inline] packet_snd net/packet/af_packet.c:3016 [inline] packet_sendmsg+0x716c/0x9ee0 net/packet/af_packet.c:3104 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0xa24/0xe40 net/socket.c:2501 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2555 __sys_sendmsg net/socket.c:2584 [inline] __do_sys_sendmsg net/socket.c:2593 [inline] __se_sys_sendmsg net/socket.c:2591 [inline] __x64_sys_sendmsg+0x36b/0x540 net/socket.c:2591 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd CPU: 1 PID: 7317 Comm: syz-executor.1 Tainted: G W 6.3.0-rc5-syzkaller-g9189d4cb6980 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 =====================================================