================================================================== BUG: KCSAN: data-race in netlink_insert / netlink_sendmsg write to 0xffff88810d9a4b40 of 1 bytes by task 16051 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 0xffff88810d9a4b40 of 1 bytes by task 16040 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: 16040 Comm: syz-executor.5 Not tainted 5.10.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================