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BUG: KCSAN: data-race in netlink_getname / netlink_insert

write to 0xffff8881498e3b00 of 4 bytes by task 13822 on cpu 0:
 netlink_insert+0xe8/0x900 net/netlink/af_netlink.c:583
 netlink_autobind+0xae/0x160 net/netlink/af_netlink.c:845
 netlink_sendmsg+0x43f/0x750 net/netlink/af_netlink.c:1884
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0x38f/0x500 net/socket.c:2492
 ___sys_sendmsg net/socket.c:2546 [inline]
 __sys_sendmsg+0x197/0x230 net/socket.c:2575
 __do_sys_sendmsg net/socket.c:2584 [inline]
 __se_sys_sendmsg net/socket.c:2582 [inline]
 __x64_sys_sendmsg+0x42/0x50 net/socket.c:2582
 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+0x46/0xb0

read to 0xffff8881498e3b00 of 4 bytes by task 13823 on cpu 1:
 netlink_getname+0xcd/0x1a0 net/netlink/af_netlink.c:1133
 __sys_getsockname+0x11d/0x1b0 net/socket.c:2029
 __do_sys_getsockname net/socket.c:2044 [inline]
 __se_sys_getsockname net/socket.c:2041 [inline]
 __x64_sys_getsockname+0x3e/0x50 net/socket.c:2041
 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+0x46/0xb0

value changed: 0x00000000 -> 0x000010fd

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 13823 Comm: syz-executor.3 Not tainted 5.19.0-rc4-syzkaller-00014-g941e3e791269-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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