================================================================== BUG: KCSAN: data-race in do_signal_stop / futex_wait_queue_me write to 0xffff88810551106c of 4 bytes by task 7730 on cpu 0: freezer_do_not_count include/linux/freezer.h:109 [inline] freezable_schedule include/linux/freezer.h:171 [inline] futex_wait_queue_me+0x198/0x260 kernel/futex.c:2606 futex_wait+0x143/0x430 kernel/futex.c:2708 do_futex+0x9d8/0x1ee0 kernel/futex.c:3732 __do_sys_futex kernel/futex.c:3805 [inline] __se_sys_futex+0x21c/0x380 kernel/futex.c:3786 __x64_sys_futex+0x74/0x80 kernel/futex.c:3786 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88810551106c of 4 bytes by task 7723 on cpu 1: task_set_jobctl_pending kernel/signal.c:289 [inline] do_signal_stop+0x33e/0x710 kernel/signal.c:2391 get_signal+0xa16/0x1610 kernel/signal.c:2770 arch_do_signal_or_restart+0x2a/0x220 arch/x86/kernel/signal.c:789 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x109/0x190 kernel/entry/common.c:208 irqentry_exit_to_user_mode+0x5/0x20 kernel/entry/common.c:314 irqentry_exit+0xe/0x30 kernel/entry/common.c:405 sysvec_apic_timer_interrupt+0x3e/0x80 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7723 Comm: syz-executor.0 Not tainted 5.13.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================