================================================================== BUG: KCSAN: data-race in do_group_exit / do_group_exit write to 0xffff888082d67ab4 of 4 bytes by task 23312 on cpu 1: do_group_exit+0x137/0x180 kernel/exit.c:897 __do_sys_exit_group+0xb/0x10 kernel/exit.c:914 __se_sys_exit_group+0x5/0x10 kernel/exit.c:912 __x64_sys_exit_group+0x16/0x20 kernel/exit.c:912 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888082d67ab4 of 4 bytes by task 23313 on cpu 0: signal_group_exit include/linux/sched/signal.h:268 [inline] do_group_exit+0x55/0x180 kernel/exit.c:886 __do_sys_exit_group+0xb/0x10 kernel/exit.c:914 __se_sys_exit_group+0x5/0x10 kernel/exit.c:912 __x64_sys_exit_group+0x16/0x20 kernel/exit.c:912 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 23313 Comm: syz-executor.5 Not tainted 5.9.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================