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BUG: KCSAN: data-race in netlink_recvmsg / netlink_recvmsg

read to 0xffff88811bbfa318 of 8 bytes by task 6300 on cpu 0:
 netlink_recvmsg+0xb0/0x790 net/netlink/af_netlink.c:1982
 sock_recvmsg_nosec net/socket.c:944 [inline]
 sock_recvmsg net/socket.c:962 [inline]
 __sys_recvfrom+0x204/0x2c0 net/socket.c:2093
 __do_sys_recvfrom net/socket.c:2111 [inline]
 __se_sys_recvfrom net/socket.c:2107 [inline]
 __x64_sys_recvfrom+0x74/0x90 net/socket.c:2107
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

write to 0xffff88811bbfa318 of 8 bytes by task 6299 on cpu 1:
 netlink_recvmsg+0xf8/0x790 net/netlink/af_netlink.c:1983
 ____sys_recvmsg+0x16c/0x320
 ___sys_recvmsg net/socket.c:2670 [inline]
 do_recvmmsg+0x3f5/0xae0 net/socket.c:2764
 __sys_recvmmsg net/socket.c:2845 [inline]
 __do_sys_recvmmsg net/socket.c:2866 [inline]
 __se_sys_recvmmsg net/socket.c:2859 [inline]
 __x64_sys_recvmmsg+0xf5/0x160 net/socket.c:2859
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x0000000000000000 -> 0x0000000000001000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 6299 Comm: syz-executor.0 Not tainted 5.15.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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