linux-kernel - [PATCH 5.3 036/163] misc: fastrpc: prevent memory leak in fastrpc_dma_buf

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Message-Id: <20191104212142.834864609@linuxfoundation.org>
Date:   Mon,  4 Nov 2019 22:43:46 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Navid Emamdoost <navid.emamdoost@...il.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.3 036/163] misc: fastrpc: prevent memory leak in fastrpc_dma_buf_attach

From: Navid Emamdoost <navid.emamdoost@...il.com>

[ Upstream commit fc739a058d99c9297ef6bfd923b809d85855b9a9 ]

In fastrpc_dma_buf_attach if dma_get_sgtable fails the allocated memory
for a should be released.

Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
Link: https://lore.kernel.org/r/20190925152742.16258-1-navid.emamdoost@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/misc/fastrpc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 98603e235cf04..a76b6c6fd660f 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -499,6 +499,7 @@ static int fastrpc_dma_buf_attach(struct dma_buf *dmabuf,
 			      FASTRPC_PHYS(buffer->phys), buffer->size);
 	if (ret < 0) {
 		dev_err(buffer->dev, "failed to get scatterlist from DMA API\n");
+		kfree(a);
 		return -EINVAL;
 	}
 
-- 
2.20.1