linux-kernel - [PATCH 116/190] Revert "thunderbolt: property: Fix a NULL pointer dereference"

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Message-Id: <20210421130105.1226686-117-gregkh@linuxfoundation.org>
Date:   Wed, 21 Apr 2021 14:59:51 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kangjie Lu <kjlu@....edu>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>
Subject: [PATCH 116/190] Revert "thunderbolt: property: Fix a NULL pointer dereference"

This reverts commit 106204b56f60abf1bead7dceb88f2be3e34433da.

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: Kangjie Lu <kjlu@....edu>
Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/thunderbolt/property.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/thunderbolt/property.c b/drivers/thunderbolt/property.c
index ee76449524a3..b2f0d6386cee 100644
--- a/drivers/thunderbolt/property.c
+++ b/drivers/thunderbolt/property.c
@@ -548,11 +548,6 @@ int tb_property_add_data(struct tb_property_dir *parent, const char *key,

 	property->length = size / 4;
 	property->value.data = kzalloc(size, GFP_KERNEL);
-	if (!property->value.data) {
-		kfree(property);
-		return -ENOMEM;
-	}
-
 	memcpy(property->value.data, buf, buflen);

 	list_add_tail(&property->list, &parent->properties);
-- 
2.31.1