================================================================== BUG: KCSAN: data-race in do_exit / get_signal read-write to 0xffff88812dac602c of 4 bytes by task 11325 on cpu 0: get_signal+0xcaa/0x1440 kernel/signal.c:2750 arch_do_signal_or_restart+0x2a/0x270 arch/x86/kernel/signal.c:811 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+0x109/0x1a0 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:302 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88812dac602c of 4 bytes by task 11329 on cpu 1: find_alive_thread kernel/exit.c:511 [inline] find_new_reaper kernel/exit.c:560 [inline] forget_original_parent kernel/exit.c:635 [inline] exit_notify kernel/exit.c:668 [inline] do_exit+0x59c/0x1690 kernel/exit.c:845 do_group_exit+0xc8/0x170 kernel/exit.c:922 get_signal+0xd5e/0x1440 kernel/signal.c:2770 arch_do_signal_or_restart+0x2a/0x270 arch/x86/kernel/signal.c:811 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+0x109/0x1a0 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:302 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 11329 Comm: syz-executor.2 Not tainted 5.11.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================