[PATCH 2/2] partition: dos: use xmalloc for unchecked allocations

[Ahmad Fatoum]

Instead of unconditional dereferencing of pointers that may be NULL, do a
controlled panic in the case we are out of memory by using xmalloc().

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 common/partitions/dos.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/common/partitions/dos.c b/common/partitions/dos.c
index 8e4edd885bfa..511d58cf0489 100644
--- a/common/partitions/dos.c
+++ b/common/partitions/dos.c
@@ -53,7 +53,7 @@ static inline int is_extended_partition(struct partition *p)
 
 static void *read_mbr(struct block_device *blk)
 {
-	void *buf = malloc(SECTOR_SIZE);
+	void *buf = xmalloc(SECTOR_SIZE);
 	int ret;
 
 	ret = block_read(blk, buf, 0, 1);
@@ -124,7 +124,7 @@ static int dos_get_disk_signature(struct param_d *p, void *_priv)
 static void dos_extended_partition(struct block_device *blk, struct dos_partition_desc *dpd,
 		struct partition *partition, uint32_t signature)
 {
-	uint8_t *buf = malloc(SECTOR_SIZE);
+	uint8_t *buf = xmalloc(SECTOR_SIZE);
 	uint32_t ebr_sector = partition->first_sec;
 	struct partition_entry *table = (struct partition_entry *)&buf[0x1be];
 	unsigned partno = 4;
-- 
2.39.5