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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Wenwen Wang <wang6495@umn.edu>,
        Adam Radford <aradford@gmail.com>,
        "Martin K . Petersen" <martin.petersen@oracle.com>
Subject: [PATCH 188/190] Revert "scsi: 3w-xxxx: fix a missing-check bug"
Date:   Wed, 21 Apr 2021 15:01:03 +0200
Message-Id: <20210421130105.1226686-189-gregkh@linuxfoundation.org>
In-Reply-To: <20210421130105.1226686-1-gregkh@linuxfoundation.org>
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This reverts commit 9899e4d3523faaef17c67141aa80ff2088f17871.

Commits from @umn.edu addresses have been found to be submitted in "bad
faith" to try to test the kernel community's ability to review "known
malicious" changes.  The result of these submissions can be found in a
paper published at the 42nd IEEE Symposium on Security and Privacy
entitled, "Open Source Insecurity: Stealthily Introducing
Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University
of Minnesota) and Kangjie Lu (University of Minnesota).

Because of this, all submissions from this group must be reverted from
the kernel tree and will need to be re-reviewed again to determine if
they actually are a valid fix.  Until that work is complete, remove this
change to ensure that no problems are being introduced into the
codebase.

Cc: Wenwen Wang <wang6495@umn.edu>
Cc: Adam Radford <aradford@gmail.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/scsi/3w-xxxx.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index d90b9fca4aea..8f52f35e40f1 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -1035,9 +1035,6 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
 
 	dprintk(KERN_WARNING "3w-xxxx: tw_ioctl_open()\n");
 
-	if (!capable(CAP_SYS_ADMIN))
-		return -EACCES;
-
 	minor_number = iminor(inode);
 	if (minor_number >= tw_device_extension_count)
 		return -ENODEV;
-- 
2.31.1