forked from Minki/linux
mtd: core: Potential NULL dereference in mtd_otp_size()
If kmalloc() fails then it could lead to a NULL dereference. Check and
return -ENOMEM on error.
Fixes: 4b361cfa86
("mtd: core: add OTP nvmem provider support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/YJ6Iw3iNvGycAWV6@mwanda
This commit is contained in:
parent
bc8e157fdb
commit
c3c8c051df
@ -779,12 +779,16 @@ static void mtd_set_dev_defaults(struct mtd_info *mtd)
|
||||
|
||||
static ssize_t mtd_otp_size(struct mtd_info *mtd, bool is_user)
|
||||
{
|
||||
struct otp_info *info = kmalloc(PAGE_SIZE, GFP_KERNEL);
|
||||
struct otp_info *info;
|
||||
ssize_t size = 0;
|
||||
unsigned int i;
|
||||
size_t retlen;
|
||||
int ret;
|
||||
|
||||
info = kmalloc(PAGE_SIZE, GFP_KERNEL);
|
||||
if (!info)
|
||||
return -ENOMEM;
|
||||
|
||||
if (is_user)
|
||||
ret = mtd_get_user_prot_info(mtd, PAGE_SIZE, &retlen, info);
|
||||
else
|
||||
|
Loading…
Reference in New Issue
Block a user