diff options
| -rw-r--r-- | fs/exec.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/fs/exec.c b/fs/exec.c index d0ecea0781f..dd194923c52 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -616,6 +616,15 @@ static int de_thread(struct task_struct *tsk) kmem_cache_free(sighand_cachep, newsighand); return -EAGAIN; } + + /* + * child_reaper ignores SIGKILL, change it now. + * Reparenting needs write_lock on tasklist_lock, + * so it is safe to do it under read_lock. + */ + if (unlikely(current->group_leader == child_reaper)) + child_reaper = current; + zap_other_threads(current); read_unlock(&tasklist_lock); @@ -660,23 +669,12 @@ static int de_thread(struct task_struct *tsk) struct dentry *proc_dentry1, *proc_dentry2; unsigned long ptrace; - leader = current->group_leader; - /* - * If our leader is the child_reaper become - * the child_reaper and resend SIGKILL signal. - */ - if (unlikely(leader == child_reaper)) { - write_lock(&tasklist_lock); - child_reaper = current; - zap_other_threads(current); - write_unlock(&tasklist_lock); - } - /* * Wait for the thread group leader to be a zombie. * It should already be zombie at this point, most * of the time. */ + leader = current->group_leader; while (leader->exit_state != EXIT_ZOMBIE) yield(); |