=====================================================
BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]
BUG: KMSAN: uninit-value in geneve_rx+0x2076/0x2430 drivers/net/geneve.c:279
 IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]
 geneve_rx+0x2076/0x2430 drivers/net/geneve.c:279
 geneve_udp_encap_recv+0x11dd/0x1420 drivers/net/geneve.c:396
 udp_queue_rcv_one_skb+0x148a/0x1640 net/ipv4/udp.c:2165
 udp_queue_rcv_skb+0x8d7/0x910 net/ipv4/udp.c:2242
 udp_unicast_rcv_skb+0x366/0x460 net/ipv4/udp.c:2402
 __udp4_lib_rcv+0x1c28/0x27f0 net/ipv4/udp.c:2474
 udp_rcv+0x35/0x40 net/ipv4/udp.c:2647
 ip_protocol_deliver_rcu+0x201/0xaf0 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x2a5/0x3a0 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x278/0x4a0 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:461 [inline]
 ip_rcv_finish net/ipv4/ip_input.c:444 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0x527/0x7c0 net/ipv4/ip_input.c:564
 __netif_receive_skb_one_core net/core/dev.c:5485 [inline]
 __netif_receive_skb+0x1b3/0x5d0 net/core/dev.c:5599
 process_backlog+0x45a/0x890 net/core/dev.c:5927
 __napi_poll+0xe6/0x920 net/core/dev.c:6511
 napi_poll net/core/dev.c:6578 [inline]
 net_rx_action+0x9e8/0x1a20 net/core/dev.c:6689
 __do_softirq+0x1cc/0x7fb kernel/softirq.c:571
 do_softirq+0x13d/0x1e0 kernel/softirq.c:472
 __local_bh_enable_ip+0x93/0xa0 kernel/softirq.c:396
 local_bh_enable+0x24/0x30 include/linux/bottom_half.h:33
 rcu_read_unlock_bh include/linux/rcupdate.h:776 [inline]
 __dev_queue_xmit+0x2195/0x31f0 net/core/dev.c:4283
 dev_queue_xmit+0x2b/0x30 include/linux/netdevice.h:3008
 packet_snd net/packet/af_packet.c:3073 [inline]
 packet_sendmsg+0x605b/0x78e0 net/packet/af_packet.c:3104
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 __sys_sendto+0x7f2/0xa60 net/socket.c:2117
 __do_sys_sendto net/socket.c:2129 [inline]
 __se_sys_sendto net/socket.c:2125 [inline]
 __x64_sys_sendto+0x121/0x1c0 net/socket.c:2125
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:732 [inline]
 slab_alloc_node mm/slub.c:3258 [inline]
 __kmalloc_node_track_caller+0x814/0x1250 mm/slub.c:4970
 kmalloc_reserve net/core/skbuff.c:362 [inline]
 __alloc_skb+0x346/0xcf0 net/core/skbuff.c:434
 alloc_skb include/linux/skbuff.h:1257 [inline]
 alloc_skb_with_frags+0xb9/0xba0 net/core/skbuff.c:6021
 sock_alloc_send_pskb+0xaa8/0xc30 net/core/sock.c:2665
 packet_alloc_skb net/packet/af_packet.c:2921 [inline]
 packet_snd net/packet/af_packet.c:3016 [inline]
 packet_sendmsg+0x4bfd/0x78e0 net/packet/af_packet.c:3104
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 __sys_sendto+0x7f2/0xa60 net/socket.c:2117
 __do_sys_sendto net/socket.c:2129 [inline]
 __se_sys_sendto net/socket.c:2125 [inline]
 __x64_sys_sendto+0x121/0x1c0 net/socket.c:2125
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

CPU: 0 PID: 8293 Comm: syz-executor.4 Not tainted 6.0.0-rc5-syzkaller-48543-g968c2729e576 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
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