[PATCH] selinux: fix memory leak

This patch fixes a memory leak when a policydb structure is destroyed.

Signed-off-by: Darrel Goeddel <dgoeddel@trustedcs.com>
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index 0111990ba8378e6ac8222817f92b188aa50ea299..f03960e697ceb5a3f27e1b54dc0bbbaba437b0bb 100644 (file)
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -644,10 +644,18 @@ void policydb_destroy(struct policydb *p)
        kfree(lra);
 
        for (rt = p->range_tr; rt; rt = rt -> next) {
-               kfree(lrt);
+               if (lrt) {
+                       ebitmap_destroy(&lrt->range.level[0].cat);
+                       ebitmap_destroy(&lrt->range.level[1].cat);
+                       kfree(lrt);
+               }
                lrt = rt;
        }
-       kfree(lrt);
+       if (lrt) {
+               ebitmap_destroy(&lrt->range.level[0].cat);
+               ebitmap_destroy(&lrt->range.level[1].cat);
+               kfree(lrt);
+       }
 
        if (p->type_attr_map) {
                for (i = 0; i < p->p_types.nprim; i++)