================================================================== BUG: KCSAN: data-race in poll_schedule_timeout.constprop.0 / pollwake write to 0xffffc9000538bc20 of 4 bytes by task 28481 on cpu 0: __pollwake fs/select.c:197 [inline] pollwake+0xe6/0x140 fs/select.c:217 __wake_up_common+0x76/0x180 kernel/sched/wait.c:93 __wake_up_common_lock+0x77/0xb0 kernel/sched/wait.c:123 unix_dgram_peer_wake_relay+0xdf/0x170 net/unix/af_unix.c:373 __wake_up_common+0x76/0x180 kernel/sched/wait.c:93 __wake_up_common_lock+0x77/0xb0 kernel/sched/wait.c:123 unix_dgram_recvmsg+0x28f/0xbf0 net/unix/af_unix.c:2135 sock_recvmsg_nosec net/socket.c:886 [inline] ____sys_recvmsg+0x343/0x350 net/socket.c:2583 ___sys_recvmsg+0xb2/0x100 net/socket.c:2627 do_recvmmsg+0x17a/0x540 net/socket.c:2725 __sys_recvmmsg+0x1f1/0x200 net/socket.c:2804 __do_sys_recvmmsg net/socket.c:2827 [inline] __se_sys_recvmmsg net/socket.c:2820 [inline] __x64_sys_recvmmsg+0x82/0xb0 net/socket.c:2820 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffffc9000538bc20 of 4 bytes by task 28482 on cpu 1: poll_schedule_timeout.constprop.0+0x4c/0xc0 fs/select.c:242 do_poll fs/select.c:951 [inline] do_sys_poll+0x670/0x990 fs/select.c:1001 __do_sys_ppoll fs/select.c:1101 [inline] __se_sys_ppoll fs/select.c:1081 [inline] __x64_sys_ppoll+0x156/0x190 fs/select.c:1081 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 28482 Comm: syz-executor.0 Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================