Commit d35abdb2 authored by Al Viro's avatar Al Viro
Browse files

hold task_lock around checks in keyctl



Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 6120d3db
......@@ -1486,6 +1486,7 @@ long keyctl_session_to_parent(void)
oldwork = NULL;
parent = me->real_parent;
task_lock(parent);
/* the parent mustn't be init and mustn't be a kernel thread */
if (parent->pid <= 1 || !parent->mm)
goto unlock;
......@@ -1529,6 +1530,7 @@ long keyctl_session_to_parent(void)
if (!ret)
newwork = NULL;
unlock:
task_unlock(parent);
write_unlock_irq(&tasklist_lock);
rcu_read_unlock();
if (oldwork)
......
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