linux-ext4 - [PATCH] ext4: Fix memleak in ext4

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Message-ID: <569E4B40.3060506@virtuozzo.com>
Date:	Tue, 19 Jan 2016 17:42:08 +0300
From:	Kirill Tkhai <ktkhai@...tuozzo.com>
To:	<linux-ext4@...r.kernel.org>
CC:	<dmonakhov@...tuozzo.com>, <tytso@....edu>
Subject: [PATCH] ext4: Fix memleak in ext4_readdir()

When ext4_bread() fails, fname_crypto_str remains
allocated after return. Fix that.

Signed-off-by: Kirill Tkhai <ktkhai@...tuozzo.com>
CC: Theodore Ts'o <tytso@....edu>
CC: Dmitry Monakhov <dmonakhov@...tuozzo.com>
---
 fs/ext4/dir.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 1d1bca7..def3215 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -157,8 +157,11 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
 					index, 1);
 			file->f_ra.prev_pos = (loff_t)index << PAGE_CACHE_SHIFT;
 			bh = ext4_bread(NULL, inode, map.m_lblk, 0);
-			if (IS_ERR(bh))
-				return PTR_ERR(bh);
+			if (IS_ERR(bh)) {
+				err = PTR_ERR(bh);
+				bh = NULL;
+				goto errout;
+			}
 		}
 
 		if (!bh) {

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