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Date: Sun, 11 Nov 2018 14:24:47 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Colin Ian King <colin.king@...onical.com>,
Bjorn Andersson <bjorn.andersson@...aro.org>
Subject: [PATCH 4.14 190/222] rpmsg: smd: fix memory leak on channel create
4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Colin Ian King <colin.king@...onical.com>
commit 940c620d6af8fca7d115de40f19870fba415efac upstream.
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@...r.kernel.org
Signed-off-by: Colin Ian King <colin.king@...onical.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/rpmsg/qcom_smd.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/rpmsg/qcom_smd.c
+++ b/drivers/rpmsg/qcom_smd.c
@@ -1049,8 +1049,10 @@ static struct qcom_smd_channel *qcom_smd
channel->edge = edge;
channel->name = kstrdup(name, GFP_KERNEL);
- if (!channel->name)
- return ERR_PTR(-ENOMEM);
+ if (!channel->name) {
+ ret = -ENOMEM;
+ goto free_channel;
+ }
mutex_init(&channel->tx_lock);
spin_lock_init(&channel->recv_lock);
@@ -1099,6 +1101,7 @@ static struct qcom_smd_channel *qcom_smd
free_name_and_channel:
kfree(channel->name);
+free_channel:
kfree(channel);
return ERR_PTR(ret);
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