From: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Date: Fri, 5 Jul 2019 08:13:03 +0000 (+0200)
Subject: misc: fastrpc: fix memory leak when out of memory
X-Git-Tag: v5.4-rc1~133^2~96
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=41db5f8397eee75afff82655a4884b5786a1d302;p=platform%2Fkernel%2Flinux-rpi.git

misc: fastrpc: fix memory leak when out of memory

Do the necessary house-keeping if the allocated memory wont be used

Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Link: https://lore.kernel.org/r/20190705081303.14170-1-jorge.ramirez-ortiz@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 98603e2..c790585 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -279,8 +279,11 @@ static int fastrpc_buf_alloc(struct fastrpc_user *fl, struct device *dev,
 
 	buf->virt = dma_alloc_coherent(dev, buf->size, (dma_addr_t *)&buf->phys,
 				       GFP_KERNEL);
-	if (!buf->virt)
+	if (!buf->virt) {
+		mutex_destroy(&buf->lock);
+		kfree(buf);
 		return -ENOMEM;
+	}
 
 	if (fl->sctx && fl->sctx->sid)
 		buf->phys += ((u64)fl->sctx->sid << 32);