From: Dan Carpenter <error27@gmail.com>
Date: Sat, 20 Mar 2010 11:24:48 +0000 (+0000)
Subject: Btrfs: dereferencing freed memory
X-Git-Tag: firefly_0821_release~9833^2~2151^2~12
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=683be16eb6e19a35aca2473668652259ed074094;p=firefly-linux-kernel-4.4.55.git

Btrfs: dereferencing freed memory

The original code dereferenced range on the next line.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 5c9f8b30608c..874d36e5f167 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1374,6 +1374,7 @@ 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)) {