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rpmsg: smd: fix memory leak on channel create

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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>
This commit is contained in:
Colin Ian King 2018-09-27 22:36:27 +01:00 committed by Bjorn Andersson
parent f0beb4ba9b
commit 940c620d6a
1 changed files with 5 additions and 2 deletions
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7
drivers/rpmsg/qcom_smd.c
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@ -1122,8 +1122,10 @@ static struct qcom_smd_channel *qcom_smd_create_channel(struct qcom_smd_edge *ed
channel->edge = edge; channel->edge = edge;
channel->name = kstrdup(name, GFP_KERNEL); channel->name = kstrdup(name, GFP_KERNEL);
if (!channel->name) if (!channel->name) {
return ERR_PTR(-ENOMEM); ret = -ENOMEM;
goto free_channel;
}
spin_lock_init(&channel->tx_lock); spin_lock_init(&channel->tx_lock);
spin_lock_init(&channel->recv_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: free_name_and_channel:
kfree(channel->name); kfree(channel->name);
free_channel:
kfree(channel); kfree(channel);
return ERR_PTR(ret); return ERR_PTR(ret);