linux-kernel - [PATCH v2] selinux: Fix error return code in sel_ib_pkey_sid

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Date:   Thu, 12 Nov 2020 21:53:32 +0800
From:   Chen Zhou <chenzhou10@...wei.com>
To:     <paul@...l-moore.com>, <stephen.smalley.work@...il.com>,
        <eparis@...isplace.org>, <danielj@...lanox.com>,
        <dledford@...hat.com>
CC:     <selinux@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <chenzhou10@...wei.com>, Hulk Robot <hulkci@...wei.com>
Subject: [PATCH v2] selinux: Fix error return code in sel_ib_pkey_sid_slow()

Fix to return a negative error code from the error handling case
instead of 0 in function sel_ib_pkey_sid_slow(), as done elsewhere
in this function.

Fixes: 409dcf31538a ("selinux: Add a cache for quicker retreival of PKey SIDs")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Chen Zhou <chenzhou10@...wei.com>
---
 security/selinux/ibpkey.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/security/selinux/ibpkey.c b/security/selinux/ibpkey.c
index f68a7617cfb9..3a63a989e55e 100644
--- a/security/selinux/ibpkey.c
+++ b/security/selinux/ibpkey.c
@@ -151,8 +151,10 @@ static int sel_ib_pkey_sid_slow(u64 subnet_prefix, u16 pkey_num, u32 *sid)
 	 * is valid, it just won't be added to the cache.
 	 */
 	new = kzalloc(sizeof(*new), GFP_ATOMIC);
-	if (!new)
+	if (!new) {
+		ret = -ENOMEM;
 		goto out;
+	}
 
 	new->psec.subnet_prefix = subnet_prefix;
 	new->psec.pkey = pkey_num;
-- 
2.20.1