linux-kernel - [PATCH 2/6] mtd: nandsim: Fix kasprintf() usage

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Date:	Mon,  1 Jun 2015 23:10:50 +0200
From:	Richard Weinberger <richard@....at>
To:	computersforpeace@...il.com
Cc:	dwmw2@...radead.org, maximlevitsky@...il.com,
	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Richard Weinberger <richard@....at>
Subject: [PATCH 2/6] mtd: nandsim: Fix kasprintf() usage

kasprintf() used in get_partition_name() does a dynamic
memory allocation and can fail. We have to handle that case.

Signed-off-by: Richard Weinberger <richard@....at>
---
 drivers/mtd/nand/nandsim.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index f232427..52c0c1a 100644
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -743,6 +743,11 @@ static int init_nandsim(struct mtd_info *mtd)
 			goto error;
 		}
 		ns->partitions[i].name   = get_partition_name(i);
+		if (!ns->partitions[i].name) {
+			NS_ERR("unable to allocate memory.\n");
+			ret = -ENOMEM;
+			goto error;
+		}
 		ns->partitions[i].offset = next_offset;
 		ns->partitions[i].size   = part_sz;
 		next_offset += ns->partitions[i].size;
@@ -756,6 +761,11 @@ static int init_nandsim(struct mtd_info *mtd)
 			goto error;
 		}
 		ns->partitions[i].name   = get_partition_name(i);
+		if (!ns->partitions[i].name) {
+			NS_ERR("unable to allocate memory.\n");
+			ret = -ENOMEM;
+			goto error;
+		}
 		ns->partitions[i].offset = next_offset;
 		ns->partitions[i].size   = remains;
 		ns->nbparts += 1;
-- 
1.8.4.5

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