From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Wed, 28 Sep 2005 04:45:32 +0000 (-0700)
Subject: [PATCH] swsusp: prevent possible memory leak
X-Git-Tag: firefly_0821_release~40980
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f2d613799af915da1fd78463ba8ec5086a0d6f92;p=firefly-linux-kernel-4.4.55.git

[PATCH] swsusp: prevent possible memory leak

Prevent swsusp from leaking some memory in case of an error in
read_pagedir().  It also prevents the BUG_ON() from triggering if there's
an error while reading swap.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index 8aef1b49150f..0dfb24948907 100644
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -1437,9 +1437,9 @@ static int read_pagedir(struct pbe *pblist)
 	}
 
 	if (error)
-		free_page((unsigned long)pblist);
-
-	BUG_ON(i != swsusp_info.pagedir_pages);
+		free_pagedir(pblist);
+	else
+		BUG_ON(i != swsusp_info.pagedir_pages);
 
 	return error;
 }