linux-kernel - [2.6.22.y] {01/14} - cciss: fix memory leak

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Message-ID: <6101e8c40802071203r5d56f6d6m330a4d7a15e4642b@mail.gmail.com>
Date:	Thu, 7 Feb 2008 21:03:11 +0100
From:	"Oliver Pinter" <oliver.pntr@...il.com>
To:	"Linux Kernel" <linux-kernel@...r.kernel.org>, stable@...nel.org,
	stable-commits@...r.kernel.org
Subject: [2.6.22.y] {01/14} - cciss: fix memory leak - on top of 2.6.22.17

aka: cciss-fix_memory_leak.patch

>From f2912a1223c0917a7b4e054f18086209137891ea Mon Sep 17 00:00:00 2001
From: Jesper Juhl <jesper.juhl@...il.com>
Date: Tue, 31 Jul 2007 00:39:39 -0700
Subject: [PATCH] cciss: fix memory leak

There's a memory leak in the cciss driver.

mainline: f2912a1223c0917a7b4e054f18086209137891ea

in alloc_cciss_hba() we may leak sizeof(ctlr_info_t) bytes if a
call to alloc_disk(1 << NWD_SHIFT) fails.
This patch should fix the issue.

Spotted by the Coverity checker.

Signed-off-by: Jesper Juhl <jesper.juhl@...il.com>
Acked-by: Mike Miller <mike.miller@...com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
CC: Oliver Pinter <oliver.pntr@...il.com>

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 1be82d5..a11b2bd 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -3227,12 +3227,15 @@ static int alloc_cciss_hba(void)
 	for (i = 0; i < MAX_CTLR; i++) {
 		if (!hba[i]) {
 			ctlr_info_t *p;
+
 			p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL);
 			if (!p)
 				goto Enomem;
 			p->gendisk[0] = alloc_disk(1 << NWD_SHIFT);
-			if (!p->gendisk[0])
+			if (!p->gendisk[0]) {
+				kfree(p);
 				goto Enomem;
+			}
 			hba[i] = p;
 			return i;
 		}

-- 
Thanks,
Oliver
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