linux-kernel - Re: [PATCH 045/190] Revert "usb: gadget: fix potential double-free in m66592

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Date:   Thu, 22 Apr 2021 14:43:15 +0300
From:   Felipe Balbi <balbi@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Qiushi Wu <wu000273@....edu>
Subject: Re: [PATCH 045/190] Revert "usb: gadget: fix potential double-free
 in m66592_probe."

Greg Kroah-Hartman <gregkh@...uxfoundation.org> writes:

> This reverts commit 44734a594196bf1d474212f38fe3a0d37a73278b.
>
> 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: Qiushi Wu <wu000273@....edu>
> Cc: Felipe Balbi <balbi@...nel.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
>  drivers/usb/gadget/udc/m66592-udc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/gadget/udc/m66592-udc.c b/drivers/usb/gadget/udc/m66592-udc.c
> index 931e6362a13d..75d16a8902e6 100644
> --- a/drivers/usb/gadget/udc/m66592-udc.c
> +++ b/drivers/usb/gadget/udc/m66592-udc.c
> @@ -1667,7 +1667,7 @@ static int m66592_probe(struct platform_device *pdev)
>  
>  err_add_udc:
>  	m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req);
> -	m66592->ep0_req = NULL;

harmless, can be reverted and left reverted, I guess.

-- 
balbi

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