[PATCH 4.14 28/77] mmc: block: fix logical error to avoid memory leak

From: Greg Kroah-Hartman
Date: Fri Mar 23 2018 - 07:54:59 EST


4.14-stable review patch. If anyone has any objections, please let me know.

------------------

From: "Liu, Changcheng" <changcheng.liu@xxxxxxxxx>


[ Upstream commit 0be55579a127916ebe39db2a74d906a2dfceed42 ]

If the MMC_DRV_OP_GET_EXT_CSD request completes successfully, then
ext_csd must be freed, but in one case it was not. Fix that.

Signed-off-by: Liu Changcheng <changcheng.liu@xxxxxxxxx>
Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/core/block.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -2387,6 +2387,7 @@ static int mmc_ext_csd_open(struct inode

if (n != EXT_CSD_STR_LEN) {
err = -EINVAL;
+ kfree(ext_csd);
goto out_free;
}