diff options
| -rw-r--r-- | kernel/exit.c | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index 33cf8db..92d38d4 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -1362,6 +1362,22 @@ static int wait_consider_task(struct wait_opts *wo, int ptrace, return 0; } + if (likely(!ptrace) && unlikely(p->ptrace)) { + /* + * If it is traced by its real parent's group, just pretend + * the caller is ptrace_do_wait() and reap this child if it + * is zombie. + * + * This also hides group stop state from real parent; otherwise + * a single stop can be reported twice as group and ptrace stop. + * If a ptracer wants to distinguish these two events for its + * own children it should create a separate process which takes + * the role of real parent. + */ + if (!ptrace_reparented(p)) + ptrace = 1; + } + /* slay zombie? */ if (p->exit_state == EXIT_ZOMBIE) { /* @@ -1403,19 +1419,6 @@ static int wait_consider_task(struct wait_opts *wo, int ptrace, wo->notask_error = 0; } else { /* - * If @p is ptraced by a task in its real parent's group, - * hide group stop/continued state when looking at @p as - * the real parent; otherwise, a single stop can be - * reported twice as group and ptrace stops. - * - * If a ptracer wants to distinguish the two events for its - * own children, it should create a separate process which - * takes the role of real parent. - */ - if (likely(!ptrace) && p->ptrace && !ptrace_reparented(p)) - return 0; - - /* * @p is alive and it's gonna stop, continue or exit, so * there always is something to wait for. */ |
