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BUG: KCSAN: data-race in netlink_insert / netlink_sendmsg
write to 0xffff888015277340 of 1 bytes by task 26436 on cpu 1:
netlink_insert+0x636/0x8e0 net/netlink/af_netlink.c:587
netlink_autobind+0xa9/0x150 net/netlink/af_netlink.c:832
netlink_sendmsg+0x47c/0x7c0 net/netlink/af_netlink.c:1882
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg net/socket.c:671 [inline]
____sys_sendmsg+0x352/0x4c0 net/socket.c:2353
___sys_sendmsg net/socket.c:2407 [inline]
__sys_sendmsg+0x1e2/0x260 net/socket.c:2440
__do_sys_sendmsg net/socket.c:2449 [inline]
__se_sys_sendmsg net/socket.c:2447 [inline]
__x64_sys_sendmsg+0x42/0x50 net/socket.c:2447
do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
read to 0xffff888015277340 of 1 bytes by task 26399 on cpu 0:
netlink_sendmsg+0x26c/0x7c0 net/netlink/af_netlink.c:1881
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg net/socket.c:671 [inline]
____sys_sendmsg+0x352/0x4c0 net/socket.c:2353
___sys_sendmsg net/socket.c:2407 [inline]
__sys_sendmsg+0x1e2/0x260 net/socket.c:2440
__do_sys_sendmsg net/socket.c:2449 [inline]
__se_sys_sendmsg net/socket.c:2447 [inline]
__x64_sys_sendmsg+0x42/0x50 net/socket.c:2447
do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 26399 Comm: syz-executor.0 Not tainted 5.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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