================================================================== BUG: KCSAN: data-race in do_exit / get_signal write to 0xffff8881190c706c of 4 bytes by task 6330 on cpu 0: get_signal+0xed6/0x1610 kernel/signal.c:2807 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 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:301 do_syscall_64+0x56/0x90 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff8881190c706c of 4 bytes by task 6324 on cpu 1: find_alive_thread kernel/exit.c:512 [inline] find_new_reaper kernel/exit.c:561 [inline] forget_original_parent kernel/exit.c:636 [inline] exit_notify kernel/exit.c:669 [inline] do_exit+0x56c/0x1560 kernel/exit.c:846 do_group_exit+0xce/0x1a0 kernel/exit.c:923 get_signal+0xfc3/0x1610 kernel/signal.c:2835 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 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:301 do_syscall_64+0x56/0x90 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 6324 Comm: syz-executor.2 Not tainted 5.13.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================