rpmsg: smd: fix memory leak on channel create
Currently a failed allocation of channel->name leads to an
immediate return without freeing channel. Fix this by setting
ret to -ENOMEM and jumping to an exit path that kfree's channel.
Detected by CoverityScan, CID#1473692 ("Resource Leak")
Fixes: 53e2822e56c7 ("rpmsg: Introduce Qualcomm SMD backend")
Cc: stable@vger.kernel.org
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
index 0dae7c9..4abbeea 100644
--- a/drivers/rpmsg/qcom_smd.c
+++ b/drivers/rpmsg/qcom_smd.c
@@ -1122,8 +1122,10 @@ static struct qcom_smd_channel *qcom_smd_create_channel(struct qcom_smd_edge *ed
channel->edge = edge;
channel->name = kstrdup(name, GFP_KERNEL);
- if (!channel->name)
- return ERR_PTR(-ENOMEM);
+ if (!channel->name) {
+ ret = -ENOMEM;
+ goto free_channel;
+ }
spin_lock_init(&channel->tx_lock);
spin_lock_init(&channel->recv_lock);
@@ -1173,6 +1175,7 @@ static struct qcom_smd_channel *qcom_smd_create_channel(struct qcom_smd_edge *ed
free_name_and_channel:
kfree(channel->name);
+free_channel:
kfree(channel);
return ERR_PTR(ret);
