================================================================== BUG: KCSAN: data-race in netlink_insert / netlink_sendmsg read to 0xffff8880b951bb40 of 1 bytes by task 11596 on cpu 1: netlink_sendmsg+0x23a/0x770 net/netlink/af_netlink.c:1879 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0x9f/0xc0 net/socket.c:657 ___sys_sendmsg+0x59d/0x5d0 net/socket.c:2311 __sys_sendmsg+0xa0/0x160 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x51/0x70 net/socket.c:2363 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff8880b951bb40 of 1 bytes by task 11591 on cpu 0: netlink_insert+0x465/0x930 net/netlink/af_netlink.c:586 netlink_autobind.isra.0+0xf8/0x170 net/netlink/af_netlink.c:831 netlink_sendmsg+0x5eb/0x770 net/netlink/af_netlink.c:1880 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0x9f/0xc0 net/socket.c:657 ___sys_sendmsg+0x59d/0x5d0 net/socket.c:2311 __sys_sendmsg+0xa0/0x160 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x51/0x70 net/socket.c:2363 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 11591 Comm: syz-executor.5 Not tainted 5.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================