[PATCH 4.19 076/101] selinux: Fix error return code in sel_ib_pkey_sid_slow()

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From: Chen Zhou <chenzhou10@xxxxxxxxxx>

commit c350f8bea271782e2733419bd2ab9bf4ec2051ef upstream.

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.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 409dcf31538a ("selinux: Add a cache for quicker retreival of PKey SIDs")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Chen Zhou <chenzhou10@xxxxxxxxxx>
Signed-off-by: Paul Moore <paul@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 security/selinux/ibpkey.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/security/selinux/ibpkey.c
+++ b/security/selinux/ibpkey.c
@@ -161,8 +161,10 @@ static int sel_ib_pkey_sid_slow(u64 subn
 	 * 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;





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