From: Navid Emamdoost <navid.emamdoost@gmail.com>
Date: Wed, 25 Sep 2019 15:27:41 +0000 (-0500)
Subject: misc: fastrpc: prevent memory leak in fastrpc_dma_buf_attach
X-Git-Tag: v5.4-rc3~5^2~5
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fc739a058d99c9297ef6bfd923b809d85855b9a9;p=thirdparty%2Fkernel%2Flinux.git

misc: fastrpc: prevent memory leak in fastrpc_dma_buf_attach

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@gmail.com>
Link: https://lore.kernel.org/r/20190925152742.16258-1-navid.emamdoost@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 47ae84afac2e1..1b1a794d639d0 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -527,6 +527,7 @@ 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;
 	}