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Message-Id: <20150417132516.188112979@linuxfoundation.org>
Date: Fri, 17 Apr 2015 15:28:29 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Sudip Mukherjee <sudip@...torindia.org>,
Paul Clements <Paul.Clements@...elEye.com>,
Markus Pargmann <mpa@...gutronix.de>
Subject: [PATCH 3.19 041/101] nbd: fix possible memory leak
3.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sudip Mukherjee <sudipm.mukherjee@...il.com>
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@...torindia.org>
Acked-by: Paul Clements <Paul.Clements@...elEye.com>
Signed-off-by: Markus Pargmann <mpa@...gutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/block/nbd.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -803,10 +803,6 @@ 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);
@@ -828,6 +824,10 @@ 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)
--
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