diff mbox series

[5.11,251/775] mtd: parsers: afs: Fix freeing the part name memory in failure

Message ID 20210301161214.034559277@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman March 1, 2021, 4:06 p.m. UTC 
From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>


[ Upstream commit 7b844cf445f0a7daa68be0ce71eb2c88d68b0c5d ]

In the case of failure while parsing the partitions, the iterator should
be pre decremented by one before starting to free the memory allocated
by kstrdup(). Because in the failure case, kstrdup() will not succeed
and thus no memory will be allocated for the current iteration.

Fixes: 1fca1f6abb38 ("mtd: afs: simplify partition parsing")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Link: https://lore.kernel.org/linux-mtd/20210104041137.113075-5-manivannan.sadhasivam@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

---
 drivers/mtd/parsers/afs.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

-- 
2.27.0
diff mbox series

Patch

diff --git a/drivers/mtd/parsers/afs.c b/drivers/mtd/parsers/afs.c
index 980e332bdac48..26116694c821b 100644
--- a/drivers/mtd/parsers/afs.c
+++ b/drivers/mtd/parsers/afs.c
@@ -370,10 +370,8 @@  static int parse_afs_partitions(struct mtd_info *mtd,
 	return i;
 
 out_free_parts:
-	while (i >= 0) {
+	while (--i >= 0)
 		kfree(parts[i].name);
-		i--;
-	}
 	kfree(parts);
 	*pparts = NULL;
 	return ret;