=====================================================
BUG: KMSAN: uninit-value in eth_type_trans+0x61f/0x800 net/ethernet/eth.c:169
 eth_type_trans+0x61f/0x800 net/ethernet/eth.c:169
 ip_tunnel_rcv+0x287f/0x2eb0 net/ipv4/ip_tunnel.c:425
 erspan_rcv net/ipv4/ip_gre.c:341 [inline]
 gre_rcv+0x15a9/0x1970 net/ipv4/ip_gre.c:442
 gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163
 ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:303 [inline]
 ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:468 [inline]
 ip_rcv_finish net/ipv4/ip_input.c:449 [inline]
 NF_HOOK include/linux/netfilter.h:303 [inline]
 ip_rcv+0x476/0x770 net/ipv4/ip_input.c:569
 __netif_receive_skb_one_core net/core/dev.c:5452 [inline]
 __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5566
 process_backlog+0x480/0x8b0 net/core/dev.c:5894
 __napi_poll+0xe4/0x950 net/core/dev.c:6460
 napi_poll net/core/dev.c:6527 [inline]
 net_rx_action+0x884/0x16d0 net/core/dev.c:6660
 __do_softirq+0x1b7/0x78f kernel/softirq.c:553
 do_softirq+0x9a/0xf0 kernel/softirq.c:454
 __local_bh_enable_ip+0x99/0xa0 kernel/softirq.c:381
 local_bh_enable+0x28/0x30 include/linux/bottom_half.h:33
 rcu_read_unlock_bh include/linux/rcupdate.h:819 [inline]
 __dev_queue_xmit+0x2616/0x50f0 net/core/dev.c:4230
 dev_queue_xmit include/linux/netdevice.h:3088 [inline]
 neigh_resolve_output+0x99a/0xab0 net/core/neighbour.c:1552
 neigh_output include/net/neighbour.h:544 [inline]
 ip_finish_output2+0x1807/0x1a10 net/ipv4/ip_output.c:230
 __ip_finish_output+0x266/0x720
 ip_finish_output+0x4b/0x420 net/ipv4/ip_output.c:318
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip_mc_output+0x708/0xe40 net/ipv4/ip_output.c:417
 dst_output include/net/dst.h:458 [inline]
 ip_local_out net/ipv4/ip_output.c:127 [inline]
 __ip_queue_xmit+0x1985/0x1c40 net/ipv4/ip_output.c:534
 sctp_v4_xmit+0x6a1/0xe90 net/sctp/protocol.c:1074
 sctp_packet_transmit+0x3e55/0x4150 net/sctp/output.c:653
 sctp_packet_singleton+0x2ab/0x390 net/sctp/outqueue.c:783
 sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline]
 sctp_outq_flush+0x709/0x5e70 net/sctp/outqueue.c:1212
 sctp_outq_uncork+0x9c/0xb0 net/sctp/outqueue.c:764
 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline]
 sctp_do_sm+0x8c1a/0x9380 net/sctp/sm_sideeffect.c:1169
 sctp_primitive_ASSOCIATE+0xc3/0x100 net/sctp/primitive.c:73
 sctp_sendmsg_to_asoc+0x178d/0x1ee0 net/sctp/socket.c:1840
 sctp_sendmsg+0x32b4/0x4a70 net/sctp/socket.c:2030
 inet_sendmsg+0x105/0x190 net/ipv4/af_inet.c:830
 sock_sendmsg_nosec net/socket.c:725 [inline]
 sock_sendmsg net/socket.c:748 [inline]
 ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2494
 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2548
 __sys_sendmsg net/socket.c:2577 [inline]
 __do_sys_sendmsg net/socket.c:2586 [inline]
 __se_sys_sendmsg net/socket.c:2584 [inline]
 __x64_sys_sendmsg+0x307/0x490 net/socket.c:2584
 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:
 pskb_expand_head+0x305/0x1a10 net/core/skbuff.c:2050
 skb_expand_head+0x44c/0x870 net/core/skbuff.c:2214
 ip_finish_output2+0xc75/0x1a10 net/ipv4/ip_output.c:211
 __ip_finish_output+0x266/0x720
 ip_finish_output+0x4b/0x420 net/ipv4/ip_output.c:318
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip_mc_output+0x708/0xe40 net/ipv4/ip_output.c:417
 dst_output include/net/dst.h:458 [inline]
 ip_local_out net/ipv4/ip_output.c:127 [inline]
 __ip_queue_xmit+0x1985/0x1c40 net/ipv4/ip_output.c:534
 sctp_v4_xmit+0x6a1/0xe90 net/sctp/protocol.c:1074
 sctp_packet_transmit+0x3e55/0x4150 net/sctp/output.c:653
 sctp_packet_singleton+0x2ab/0x390 net/sctp/outqueue.c:783
 sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline]
 sctp_outq_flush+0x709/0x5e70 net/sctp/outqueue.c:1212
 sctp_outq_uncork+0x9c/0xb0 net/sctp/outqueue.c:764
 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline]
 sctp_do_sm+0x8c1a/0x9380 net/sctp/sm_sideeffect.c:1169
 sctp_primitive_ASSOCIATE+0xc3/0x100 net/sctp/primitive.c:73
 sctp_sendmsg_to_asoc+0x178d/0x1ee0 net/sctp/socket.c:1840
 sctp_sendmsg+0x32b4/0x4a70 net/sctp/socket.c:2030
 inet_sendmsg+0x105/0x190 net/ipv4/af_inet.c:830
 sock_sendmsg_nosec net/socket.c:725 [inline]
 sock_sendmsg net/socket.c:748 [inline]
 ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2494
 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2548
 __sys_sendmsg net/socket.c:2577 [inline]
 __do_sys_sendmsg net/socket.c:2586 [inline]
 __se_sys_sendmsg net/socket.c:2584 [inline]
 __x64_sys_sendmsg+0x307/0x490 net/socket.c:2584
 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+0x12f/0xb70 mm/slab.h:767
 slab_alloc_node mm/slub.c:3470 [inline]
 __kmem_cache_alloc_node+0x536/0x8d0 mm/slub.c:3509
 __do_kmalloc_node mm/slab_common.c:984 [inline]
 __kmalloc_node_track_caller+0x118/0x3c0 mm/slab_common.c:1005
 kmalloc_reserve+0x248/0x470 net/core/skbuff.c:575
 __alloc_skb+0x318/0x740 net/core/skbuff.c:644
 alloc_skb include/linux/skbuff.h:1289 [inline]
 sctp_packet_transmit+0x551/0x4150 net/sctp/output.c:598
 sctp_packet_singleton+0x2ab/0x390 net/sctp/outqueue.c:783
 sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline]
 sctp_outq_flush+0x709/0x5e70 net/sctp/outqueue.c:1212
 sctp_outq_uncork+0x9c/0xb0 net/sctp/outqueue.c:764
 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline]
 sctp_do_sm+0x8c1a/0x9380 net/sctp/sm_sideeffect.c:1169
 sctp_primitive_ASSOCIATE+0xc3/0x100 net/sctp/primitive.c:73
 sctp_sendmsg_to_asoc+0x178d/0x1ee0 net/sctp/socket.c:1840
 sctp_sendmsg+0x32b4/0x4a70 net/sctp/socket.c:2030
 inet_sendmsg+0x105/0x190 net/ipv4/af_inet.c:830
 sock_sendmsg_nosec net/socket.c:725 [inline]
 sock_sendmsg net/socket.c:748 [inline]
 ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2494
 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2548
 __sys_sendmsg net/socket.c:2577 [inline]
 __do_sys_sendmsg net/socket.c:2586 [inline]
 __se_sys_sendmsg net/socket.c:2584 [inline]
 __x64_sys_sendmsg+0x307/0x490 net/socket.c:2584
 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: 5134 Comm: syz-executor.1 Not tainted 6.5.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
=====================================================