linux-kernel - [PATCH 089/190] Revert "PCI: endpoint: Fix a potential NULL pointer dereference"

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Date:   Wed, 21 Apr 2021 14:59:24 +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>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Subject: [PATCH 089/190] Revert "PCI: endpoint: Fix a potential NULL pointer dereference"

This reverts commit 507b820009a457afa78202da337bcb56791fbb12.

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: commit log and code update]
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/pci/endpoint/functions/pci-epf-test.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index c0ac4e9cbe72..39dd394284a5 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -915,11 +915,6 @@ static int __init pci_epf_test_init(void)

 	kpcitest_workqueue = alloc_workqueue("kpcitest",
 					     WQ_MEM_RECLAIM | WQ_HIGHPRI, 0);
-	if (!kpcitest_workqueue) {
-		pr_err("Failed to allocate the kpcitest work queue\n");
-		return -ENOMEM;
-	}
-
 	ret = pci_epf_register_driver(&test_driver);
 	if (ret) {
 		pr_err("Failed to register pci epf test driver --> %d\n", ret);
-- 
2.31.1