tracing: Have trace event string test handle zero length strings

[linux-2.6-microblaze.git] / kernel / auditsc.c

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index b517947..fce5d43 100644 (file)
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -666,7 +666,16 @@ static int audit_filter_rules(struct task_struct *tsk,
                           logged upon error */
                        if (f->lsm_rule) {
                                if (need_sid) {
-                                       security_task_getsecid_subj(tsk, &sid);
+                                       /* @tsk should always be equal to
+                                        * @current with the exception of
+                                        * fork()/copy_process() in which case
+                                        * the new @tsk creds are still a dup
+                                        * of @current's creds so we can still
+                                        * use security_current_getsecid_subj()
+                                        * here even though it always refs
+                                        * @current's creds
+                                        */
+                                       security_current_getsecid_subj(&sid);
                                        need_sid = 0;
                                }
                                result = security_audit_rule_match(sid, f->type,