From a3474224e6a01924be40a8255636ea5522c1023a Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Tue, 13 Nov 2007 22:11:50 -0800 Subject: [PATCH] wait_task_stopped: Check p->exit_state instead of TASK_TRACED The original meaning of the old test (p->state > TASK_STOPPED) was "not dead", since it was before TASK_TRACED existed and before the state/exit_state split. It was a wrong correction in commit 14bf01bb0599c89fc7f426d20353b76e12555308 to make this test for TASK_TRACED instead. It should have been changed when TASK_TRACED was introducted and again when exit_state was introduced. Signed-off-by: Roland McGrath Cc: Oleg Nesterov Cc: Alexey Dobriyan Cc: Kees Cook Acked-by: Scott James Remnant Signed-off-by: Linus Torvalds --- kernel/exit.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/kernel/exit.c b/kernel/exit.c index f1aec27f1d..cd0f1d4137 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -1386,8 +1386,7 @@ static int wait_task_stopped(struct task_struct *p, int delayed_group_leader, int why = (p->ptrace & PT_PTRACED) ? CLD_TRAPPED : CLD_STOPPED; exit_code = p->exit_code; - if (unlikely(!exit_code) || - unlikely(p->state & TASK_TRACED)) + if (unlikely(!exit_code) || unlikely(p->exit_state)) goto bail_ref; return wait_noreap_copyout(p, pid, uid, why, (exit_code << 8) | 0x7f, -- 2.39.5