linux-kernel - [PATCH 063/190] Revert "hdlcdrv: replace unnecessary assertion in hdlcdrv

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Message-Id: <20210421130105.1226686-64-gregkh@linuxfoundation.org>
Date:   Wed, 21 Apr 2021 14:58:58 +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 063/190] Revert "hdlcdrv: replace unnecessary assertion in hdlcdrv_register"

This reverts commit a886ca6fcfffd337482352f383c1002c72786b17.

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

diff --git a/drivers/net/hamradio/hdlcdrv.c b/drivers/net/hamradio/hdlcdrv.c
index 9e0058154ac3..d8df4e2b162e 100644
--- a/drivers/net/hamradio/hdlcdrv.c
+++ b/drivers/net/hamradio/hdlcdrv.c
@@ -687,6 +687,8 @@ struct net_device *hdlcdrv_register(const struct hdlcdrv_ops *ops,
 	struct hdlcdrv_state *s;
 	int err;

+	BUG_ON(ops == NULL);
+
 	if (privsize < sizeof(struct hdlcdrv_state))
 		privsize = sizeof(struct hdlcdrv_state);

-- 
2.31.1