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BUG: KCSAN: data-race in __ip4_datagram_connect / __ip_make_skb

write to 0xffff88810361352a of 2 bytes by task 32431 on cpu 1:
 __ip4_datagram_connect+0x747/0x7a0 net/ipv4/datagram.c:76
 ip4_datagram_connect+0x2a/0x40 net/ipv4/datagram.c:90
 inet_dgram_connect+0x110/0x1a0 net/ipv4/af_inet.c:581
 __sys_connect_file net/socket.c:1976 [inline]
 __sys_connect+0x197/0x1b0 net/socket.c:1993
 __do_sys_connect net/socket.c:2003 [inline]
 __se_sys_connect net/socket.c:2000 [inline]
 __x64_sys_connect+0x3d/0x50 net/socket.c:2000
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff88810361352a of 2 bytes by task 32433 on cpu 0:
 ip_select_ident_segs include/net/ip.h:532 [inline]
 ip_select_ident include/net/ip.h:547 [inline]
 __ip_make_skb+0x856/0xc00 net/ipv4/ip_output.c:1556
 ip_make_skb+0x238/0x2c0 net/ipv4/ip_output.c:1660
 udp_sendmsg+0x111f/0x1200 net/ipv4/udp.c:1260
 inet_sendmsg+0x5f/0x80 net/ipv4/af_inet.c:827
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0x38f/0x500 net/socket.c:2476
 ___sys_sendmsg net/socket.c:2530 [inline]
 __sys_sendmmsg+0x27c/0x4a0 net/socket.c:2616
 __do_sys_sendmmsg net/socket.c:2645 [inline]
 __se_sys_sendmmsg net/socket.c:2642 [inline]
 __x64_sys_sendmmsg+0x53/0x60 net/socket.c:2642
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0xede3 -> 0x9ea5

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 32433 Comm: syz-executor.0 Not tainted 6.2.0-rc3-syzkaller-00030-ge8f60cd7db24-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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