From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Date: Tue, 27 Jan 2015 12:38:22 +0000 (+0530)
Subject: nbd: fix possible memory leak
X-Git-Tag: v3.12.41~62
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dc74756d4a5693e07bf03ef56e71e10c4ea38ff9;p=thirdparty%2Fkernel%2Fstable.git

nbd: fix possible memory leak

commit ff6b8090e26ef7649ef0cc6b42389141ef48b0cf upstream.

we have already allocated memory for nbd_dev, but we were not
releasing that memory and just returning the error value.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Acked-by: Paul Clements <Paul.Clements@SteelEye.com>
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 2dc3b5153f0d8..b71f4397bcfb5 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -814,10 +814,6 @@ static int __init nbd_init(void)
 		return -EINVAL;
 	}
 
-	nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);
-	if (!nbd_dev)
-		return -ENOMEM;
-
 	part_shift = 0;
 	if (max_part > 0) {
 		part_shift = fls(max_part);
@@ -839,6 +835,10 @@ static int __init nbd_init(void)
 	if (nbds_max > 1UL << (MINORBITS - part_shift))
 		return -EINVAL;
 
+	nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);
+	if (!nbd_dev)
+		return -ENOMEM;
+
 	for (i = 0; i < nbds_max; i++) {
 		struct gendisk *disk = alloc_disk(1 << part_shift);
 		if (!disk)