From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Sat, 15 Oct 2022 08:28:55 +0000 (+0300)
Subject: fs/ntfs3: Delete duplicate condition in ntfs_read_mft()
X-Git-Tag: v6.2-rc1~22^2~22
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=658015167a8432b88f5d032e9d85d8fd50e5bf2c;p=thirdparty%2Fkernel%2Fstable.git

fs/ntfs3: Delete duplicate condition in ntfs_read_mft()

There were two patches which addressed the same bug and added the same
condition:

commit 6db620863f85 ("fs/ntfs3: Validate data run offset")
commit 887bfc546097 ("fs/ntfs3: Fix slab-out-of-bounds read in run_unpack")

Delete one condition.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
---

diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index 3977e98e3fa35..763dd982a43a7 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -381,12 +381,6 @@ attr_unpack_run:
 
 	t64 = le64_to_cpu(attr->nres.svcn);
 
-	/* offset to packed runs is out-of-bounds */
-	if (roff > asize) {
-		err = -EINVAL;
-		goto out;
-	}
-
 	err = run_unpack_ex(run, sbi, ino, t64, le64_to_cpu(attr->nres.evcn),
 			    t64, Add2Ptr(attr, roff), asize - roff);
 	if (err < 0)