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rbd: use kstrndup() in rbd_header_from_disk()

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Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
This commit is contained in:
Ilya Dryomov 2017-01-25 18:16:21 +01:00
parent 083a51fbc5
commit 848d796c8c
1 changed files with 3 additions and 7 deletions
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10
drivers/block/rbd.c
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@ -992,15 +992,11 @@ static int rbd_header_from_disk(struct rbd_device *rbd_dev,
/* Allocate this now to avoid having to handle failure below */
if (first_time) {
size_t len;
len = strnlen(ondisk->object_prefix,
sizeof (ondisk->object_prefix));
object_prefix = kmalloc(len + 1, GFP_KERNEL);
object_prefix = kstrndup(ondisk->object_prefix,
sizeof(ondisk->object_prefix),
GFP_KERNEL);
if (!object_prefix)
return -ENOMEM;
memcpy(object_prefix, ondisk->object_prefix, len);
object_prefix[len] = '\0';
}
/* Allocate the snapshot context and fill it in */