linux-ext4 - [PATCH] resize2fs : Fix potential memory corruption in ext2fs_progress

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Message-ID: <ea11fea30809140732i38680994na7d686835e2949cd@mail.gmail.com>
Date:	Sun, 14 Sep 2008 20:02:12 +0530
From:	"Manish Katiyar" <mkatiyar@...il.com>
To:	linux-ext4@...r.kernel.org, "Theodore Tso" <tytso@....edu>
Cc:	mkatiyar@...il.com
Subject: [PATCH] resize2fs : Fix potential memory corruption in ext2fs_progress_init()

Since "prog" is not initialized with 0 , below check in
ext2fs_progress_init() is wrong and may lead to corruptions.


Signed-off-by: Manish Katiyar <mkatiyar@...il.com>

---
 resize/sim_progress.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/resize/sim_progress.c b/resize/sim_progress.c
index a575633..e7dba88 100644
--- a/resize/sim_progress.c
+++ b/resize/sim_progress.c
@@ -83,7 +83,7 @@ errcode_t ext2fs_progress_init(ext2_sim_progmeter *ret_prog,
        errcode_t               retval;

        retval = ext2fs_get_mem(sizeof(struct ext2_sim_progress), &prog);
-       if (!prog)
+       if (retval)
                return retval;
        memset(prog, 0, sizeof(struct ext2_sim_progress));

-- 
1.5.4.3


Thanks -
Manish
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