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authorColin Ian King <colin.king@canonical.com>2019-09-18 11:11:56 +0100
committerMarc Kleine-Budde <mkl@pengutronix.de>2019-11-04 21:47:23 +0100
commitdb1a804cca6fe0cea9dea888d50dda134713c340 (patch)
treecd71ea3ee0737904a133bf93ad059cf24a5ee767 /net/can
parentb5018be6d5dd9dd257bf8236298daac8b1262750 (diff)
downloadlinux-db1a804cca6fe0cea9dea888d50dda134713c340.tar.bz2
can: j1939: fix resource leak of skb on error return paths
Currently the error return paths do not free skb and this results in a memory leak. Fix this by freeing them before the return. Addresses-Coverity: ("Resource leak") Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'net/can')
-rw-r--r--net/can/j1939/socket.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
index 37c1040bcb9c..5c6eabcb5df1 100644
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -909,8 +909,10 @@ void j1939_sk_errqueue(struct j1939_session *session,
memset(serr, 0, sizeof(*serr));
switch (type) {
case J1939_ERRQUEUE_ACK:
- if (!(sk->sk_tsflags & SOF_TIMESTAMPING_TX_ACK))
+ if (!(sk->sk_tsflags & SOF_TIMESTAMPING_TX_ACK)) {
+ kfree_skb(skb);
return;
+ }
serr->ee.ee_errno = ENOMSG;
serr->ee.ee_origin = SO_EE_ORIGIN_TIMESTAMPING;
@@ -918,8 +920,10 @@ void j1939_sk_errqueue(struct j1939_session *session,
state = "ACK";
break;
case J1939_ERRQUEUE_SCHED:
- if (!(sk->sk_tsflags & SOF_TIMESTAMPING_TX_SCHED))
+ if (!(sk->sk_tsflags & SOF_TIMESTAMPING_TX_SCHED)) {
+ kfree_skb(skb);
return;
+ }
serr->ee.ee_errno = ENOMSG;
serr->ee.ee_origin = SO_EE_ORIGIN_TIMESTAMPING;