From mboxrd@z Thu Jan 1 00:00:00 1970 From: SF Markus Elfring Date: Sun, 15 Jan 2017 15:38:12 +0000 Subject: [PATCH 38/46] selinux: One function call less in five functions after null pointer detection Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-security-module@vger.kernel.org, selinux@tycho.nsa.gov, Eric Paris , James Morris , Paul Moore , "Serge E. Hallyn" , Stephen Smalley , William Roberts Cc: LKML , kernel-janitors@vger.kernel.org From: Markus Elfring Date: Sun, 15 Jan 2017 11:28:02 +0100 Call the function "kfree" at the end only after it was determined that the passed parameter contained a non-null pointer. Signed-off-by: Markus Elfring --- security/selinux/ss/policydb.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c index faa6ecc2450d..88730b372277 100644 --- a/security/selinux/ss/policydb.c +++ b/security/selinux/ss/policydb.c @@ -620,8 +620,8 @@ static int common_destroy(void *key, void *datum, void *p) comdatum = datum; hashtab_map(comdatum->permissions.table, perm_destroy, NULL); hashtab_destroy(comdatum->permissions.table); + kfree(datum); } - kfree(datum); return 0; } @@ -675,8 +675,8 @@ static int cls_destroy(void *key, void *datum, void *p) kfree(ctemp); } kfree(cladatum->comkey); + kfree(datum); } - kfree(datum); return 0; } @@ -689,8 +689,8 @@ static int role_destroy(void *key, void *datum, void *p) role = datum; ebitmap_destroy(&role->dominates); ebitmap_destroy(&role->types); + kfree(datum); } - kfree(datum); return 0; } @@ -712,8 +712,8 @@ static int user_destroy(void *key, void *datum, void *p) ebitmap_destroy(&usrdatum->range.level[0].cat); ebitmap_destroy(&usrdatum->range.level[1].cat); ebitmap_destroy(&usrdatum->dfltlevel.cat); + kfree(datum); } - kfree(datum); return 0; } @@ -726,8 +726,8 @@ static int sens_destroy(void *key, void *datum, void *p) levdatum = datum; ebitmap_destroy(&levdatum->level->cat); kfree(levdatum->level); + kfree(datum); } - kfree(datum); return 0; } -- 2.11.0