================================================================== BUG: KCSAN: data-race in netlink_recvmsg / netlink_recvmsg write to 0xffff888102df4b08 of 8 bytes by task 29260 on cpu 1: netlink_recvmsg+0xd5/0x760 net/netlink/af_netlink.c:1975 sock_recvmsg_nosec net/socket.c:888 [inline] sock_recvmsg net/socket.c:906 [inline] __sys_recvfrom+0x1d7/0x2a0 net/socket.c:2034 __do_sys_recvfrom net/socket.c:2052 [inline] __se_sys_recvfrom net/socket.c:2048 [inline] __x64_sys_recvfrom+0x74/0x90 net/socket.c:2048 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888102df4b08 of 8 bytes by task 29254 on cpu 0: netlink_recvmsg+0x8d/0x760 net/netlink/af_netlink.c:1974 ____sys_recvmsg+0x15d/0x310 include/linux/uio.h:244 ___sys_recvmsg net/socket.c:2611 [inline] do_recvmmsg+0x34c/0x9e0 net/socket.c:2705 __sys_recvmmsg net/socket.c:2786 [inline] __do_sys_recvmmsg net/socket.c:2807 [inline] __se_sys_recvmmsg net/socket.c:2800 [inline] __x64_sys_recvmmsg+0xe6/0x150 net/socket.c:2800 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 29254 Comm: syz-executor.0 Not tainted 5.13.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================