================================================================== BUG: KCSAN: data-race in unix_dgram_connect / unix_dgram_poll write to 0xffff88801f3b7230 of 4 bytes by task 25273 on cpu 0: unix_dgram_disconnected net/unix/af_unix.c:486 [inline] unix_dgram_connect+0x792/0x860 net/unix/af_unix.c:1190 __sys_connect_file net/socket.c:1852 [inline] __sys_connect+0x245/0x280 net/socket.c:1869 __do_sys_connect net/socket.c:1879 [inline] __se_sys_connect net/socket.c:1876 [inline] __x64_sys_connect+0x3d/0x50 net/socket.c:1876 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88801f3b7230 of 4 bytes by task 25248 on cpu 1: unix_dgram_poll+0x6e/0x3b0 net/unix/af_unix.c:2692 sock_poll+0x188/0x1a0 net/socket.c:1265 vfs_poll include/linux/poll.h:90 [inline] ep_item_poll fs/eventpoll.c:885 [inline] ep_send_events_proc+0x227/0x5f0 fs/eventpoll.c:1742 ep_scan_ready_list+0x13e/0x330 fs/eventpoll.c:712 ep_send_events fs/eventpoll.c:1786 [inline] ep_poll fs/eventpoll.c:1942 [inline] do_epoll_wait+0x4b2/0x810 fs/eventpoll.c:2323 __do_sys_epoll_wait fs/eventpoll.c:2333 [inline] __se_sys_epoll_wait fs/eventpoll.c:2330 [inline] __x64_sys_epoll_wait+0x4d/0x60 fs/eventpoll.c:2330 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: 1 PID: 25248 Comm: syz-executor.2 Not tainted 5.10.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================