[PATCH git] make selinux_audit_rule_update() remove safely

[Amy Griffis <amy.griffis@hp.com>]

(Al, this is a fix for the -mm patch
audit-support-for-context-based-audit-filtering-2.patch.  Please fold
in with lspp.b7 3811b185122022cd5e59b1ca85342b820e3b3e22 on next
rebase.)

Use list_for_each_entry_safe() in selinux_audit_rule_update() to
protect against call_rcu() on list entries while traversing.

Signed-off-by: Amy Griffis <amy.griffis@hp.com>

---

 kernel/auditfilter.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

71476af7bf618dee43c9ac86b0227882df412152
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index 7b91a1e..f1151a2 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -1397,7 +1397,7 @@ static inline int audit_rule_has_selinux
  * updated rule. */
 int selinux_audit_rule_update(void)
 {
-	struct audit_entry *entry, *nentry;
+	struct audit_entry *entry, *n, *nentry;
 	struct audit_watch *watch;
 	int i, err = 0;
 
@@ -1405,7 +1405,7 @@ int selinux_audit_rule_update(void)
 	mutex_lock(&audit_filter_mutex);
 
 	for (i = 0; i < AUDIT_NR_FILTERS; i++) {
-		list_for_each_entry(entry, &audit_filter_list[i], list) {
+		list_for_each_entry_safe(entry, n, &audit_filter_list[i], list) {
 			if (!audit_rule_has_selinux(&entry->rule))
 				continue;
 
-- 
1.3.0