UBI: fix check for "too many bytes"
commit 299d0c5b27346a77a0777c993372bf8777d4f2e5 upstream.
The comparison from the previous line seems to have been erroneously
(partially) copied-and-pasted onto the next. The second line should be
checking req.bytes, not req.lnum.
Coverity CID #139400
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
[rw: Fixed comparison]
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index 4f02848..fc764e7 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -475,7 +475,7 @@
/* Validate the request */
err = -EINVAL;
if (req.lnum < 0 || req.lnum >= vol->reserved_pebs ||
- req.bytes < 0 || req.lnum >= vol->usable_leb_size)
+ req.bytes < 0 || req.bytes > vol->usable_leb_size)
break;
err = get_exclusive(desc);