================================================================== BUG: KCSAN: data-race in attach_to_pi_owner / futex_wait_queue_me write to 0xffff8880b2a2c024 of 4 bytes by task 22082 on cpu 1: freezer_count include/linux/freezer.h:121 [inline] freezable_schedule include/linux/freezer.h:173 [inline] futex_wait_queue_me+0x1a8/0x250 kernel/futex.c:2634 futex_wait_requeue_pi kernel/futex.c:3281 [inline] do_futex+0x1807/0x21b0 kernel/futex.c:3831 __do_sys_futex kernel/futex.c:3872 [inline] __se_sys_futex+0x26d/0x330 kernel/futex.c:3840 __x64_sys_futex+0x74/0x80 kernel/futex.c:3840 do_syscall_64+0x71/0x120 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8880b2a2c024 of 4 bytes by task 22092 on cpu 0: attach_to_pi_owner+0x64/0x4c0 kernel/futex.c:1236 lookup_pi_state kernel/futex.c:1323 [inline] futex_requeue+0xb74/0x1520 kernel/futex.c:2080 do_futex+0x153c/0x21b0 kernel/futex.c:3834 __do_sys_futex kernel/futex.c:3872 [inline] __se_sys_futex+0x26d/0x330 kernel/futex.c:3840 __x64_sys_futex+0x74/0x80 kernel/futex.c:3840 do_syscall_64+0x71/0x120 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 22092 Comm: syz-executor.5 Not tainted 5.8.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================