================================================================== BUG: KCSAN: data-race in do_signal_stop / futex_wait_queue_me read to 0xffff8881210c5090 of 8 bytes by task 14290 on cpu 0: do_signal_stop+0x3e3/0x500 kernel/signal.c:2348 get_signal+0x61b/0x1320 kernel/signal.c:2694 do_signal+0x2f/0x6c0 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x250/0x2c0 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x384/0x3a0 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff8881210c5090 of 8 bytes by task 14291 on cpu 1: futex_wait_queue_me+0x1f8/0x290 kernel/futex.c:2706 futex_wait+0x19b/0x3f0 kernel/futex.c:2810 do_futex+0xe9/0x18d0 kernel/futex.c:3881 __do_sys_futex kernel/futex.c:3942 [inline] __se_sys_futex kernel/futex.c:3910 [inline] __x64_sys_futex+0x2cd/0x3f0 kernel/futex.c:3910 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 14291 Comm: syz-executor.1 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================