linux-kernel - [PATCH 1/7] Revert "rocker: fix incorrect error handling in dma_rings

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Date:   Thu, 29 Apr 2021 15:08:05 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Aditya Pakki <pakki001@....edu>,
        "David S . Miller" <davem@...emloft.net>
Subject: [PATCH 1/7] Revert "rocker: fix incorrect error handling in dma_rings_init"

This reverts commit 58d0c864e1a759a15c9df78f50ea5a5c32b3989e.

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 submitted to 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) but later
withdrawn.

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: Aditya Pakki <pakki001@....edu>
Cc: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/rocker/rocker_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/rocker/rocker_main.c b/drivers/net/ethernet/rocker/rocker_main.c
index 3473d296b2e2..35ebeeb40639 100644
--- a/drivers/net/ethernet/rocker/rocker_main.c
+++ b/drivers/net/ethernet/rocker/rocker_main.c
@@ -650,10 +650,10 @@ static int rocker_dma_rings_init(struct rocker *rocker)
 err_dma_event_ring_bufs_alloc:
 	rocker_dma_ring_destroy(rocker, &rocker->event_ring);
 err_dma_event_ring_create:
-	rocker_dma_cmd_ring_waits_free(rocker);
-err_dma_cmd_ring_waits_alloc:
 	rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
 				  DMA_BIDIRECTIONAL);
+err_dma_cmd_ring_waits_alloc:
+	rocker_dma_cmd_ring_waits_free(rocker);
 err_dma_cmd_ring_bufs_alloc:
 	rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
 	return err;
-- 
2.31.1