From: Dan Carpenter <error27@gmail.com>
To: Chris Mason <chris.mason@oracle.com>
Cc: Yan Zheng <zheng.yan@oracle.com>, Josef Bacik <josef@redhat.com>,
Sage Weil <sage@newdream.net>, Al Viro <viro@zeniv.linux.org.uk>,
linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: [patch 3/3] btrfs: dereferencing freed memory
Date: Sat, 20 Mar 2010 14:24:48 +0300 [thread overview]
Message-ID: <20100320112448.GX5331@bicker> (raw)
The original code dereferenced range on the next line.
Signed-off-by: Dan Carpenter <error27@gmail.com>
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index be9b5df..d7ab56c 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1378,6 +1378,7 @@ static int btrfs_ioctl_defrag(struct file *file, void __user *argp)
sizeof(*range))) {
ret = -EFAULT;
kfree(range);
+ goto out;
}
/* compression requires us to start the IO */
if ((range->flags & BTRFS_DEFRAG_RANGE_COMPRESS)) {
reply other threads:[~2010-03-20 11:24 UTC|newest]
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