================================================================== BUG: KCSAN: data-race in poll_schedule_timeout.constprop.0 / pollwake write to 0xffffc90000e63a60 of 4 bytes by task 8907 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 pipe_write+0xaa0/0xd40 fs/pipe.c:611 call_write_iter include/linux/fs.h:1907 [inline] new_sync_write+0x303/0x400 fs/read_write.c:484 __vfs_write+0x9e/0xb0 fs/read_write.c:497 vfs_write fs/read_write.c:559 [inline] vfs_write+0x189/0x380 fs/read_write.c:543 ksys_write+0x16a/0x1a0 fs/read_write.c:612 __do_sys_write fs/read_write.c:624 [inline] __se_sys_write fs/read_write.c:621 [inline] __x64_sys_write+0x49/0x60 fs/read_write.c:621 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffffc90000e63a60 of 4 bytes by task 8897 on cpu 1: poll_schedule_timeout.constprop.0+0x4c/0xc0 fs/select.c:242 do_select+0xd7e/0x1020 fs/select.c:603 core_sys_select+0x2c7/0x5f0 fs/select.c:677 kern_select+0x10b/0x170 fs/select.c:718 __do_sys_select fs/select.c:725 [inline] __se_sys_select fs/select.c:722 [inline] __x64_sys_select+0x6c/0x80 fs/select.c:722 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: 8897 Comm: sshd Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================