==================================================================
BUG: KCSAN: data-race in __inet_hash_connect / inet_send_prepare

write to 0xffff88812e04330e of 2 bytes by task 19637 on cpu 0:
 inet_bind_hash net/ipv4/inet_hashtables.c:98 [inline]
 __inet_hash_connect+0x716/0x900 net/ipv4/inet_hashtables.c:829
 inet6_hash_connect+0x77/0x80 net/ipv6/inet6_hashtables.c:327
 tcp_v6_connect+0x983/0xbb0 net/ipv6/tcp_ipv6.c:311
 __inet_stream_connect+0x156/0x6d0 net/ipv4/af_inet.c:664
 inet_stream_connect+0x44/0x70 net/ipv4/af_inet.c:728
 __sys_connect_file net/socket.c:1837 [inline]
 __sys_connect+0x245/0x280 net/socket.c:1854
 __do_sys_connect net/socket.c:1864 [inline]
 __se_sys_connect net/socket.c:1861 [inline]
 __x64_sys_connect+0x3d/0x50 net/socket.c:1861
 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff88812e04330e of 2 bytes by task 19640 on cpu 1:
 inet_send_prepare+0x21/0x210 net/ipv4/af_inet.c:806
 inet6_sendmsg+0x29/0x80 net/ipv6/af_inet6.c:639
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 __sys_sendto+0x2a8/0x370 net/socket.c:1977
 __do_sys_sendto net/socket.c:1989 [inline]
 __se_sys_sendto net/socket.c:1985 [inline]
 __x64_sys_sendto+0x74/0x90 net/socket.c:1985
 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x0000 -> 0x8e86

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 19640 Comm: syz-executor.0 Not tainted 5.13.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================