linux-kernel - Re: [PATCH] media: media-request: Fix crash according to a failed memory allocation

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Date:   Sun, 21 Jun 2020 15:55:16 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Markus Elfring <Markus.Elfring@....de>
Cc:     Tuomas Tynkkynen <tuomas.tynkkynen@....fi>,
        linux-media@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        syzbot+6bed2d543cf7e48b822b@...kaller.appspotmail.com,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>
Subject: Re: [PATCH] media: media-request: Fix crash according to a failed
 memory allocation

On Sun, Jun 21, 2020 at 02:45:10PM +0200, Markus Elfring wrote:
> > …, reorder media_request_alloc() such that …
> 
> Wording adjustments:
> …, reorder statements in the implementation of the function “media_request_alloc” so that …
> 
> 
> > … the last step thus
> 
> … the last step.
> Thus media_request_close() …
> 
> 
> Would you like to add the tag “Fixes” to the commit message?
> 
> 
> …
> > +++ b/drivers/media/mc/mc-request.c
> > @@ -296,9 +296,18 @@ int media_request_alloc(struct media_device *mdev, int *alloc_fd)
> >  	if (WARN_ON(!mdev->ops->req_alloc ^ !mdev->ops->req_free))
> >  		return -ENOMEM;
> >
> > +	if (mdev->ops->req_alloc)
> > +		req = mdev->ops->req_alloc(mdev);
> > +	else
> > +		req = kzalloc(sizeof(*req), GFP_KERNEL);
> 
> How do you think about to use a conditional operator?
> 
> +	req = (mdev->ops->req_alloc
> 	       ? mdev->ops->req_alloc(mdev)
> 	       : kzalloc(sizeof(*req), GFP_KERNEL));
> 
> 
> Regards,
> Markus

Hi,

This is the semi-friendly patch-bot of Greg Kroah-Hartman.

Markus, you seem to have sent a nonsensical or otherwise pointless
review comment to a patch submission on a Linux kernel developer mailing
list.  I strongly suggest that you not do this anymore.  Please do not
bother developers who are actively working to produce patches and
features with comments that, in the end, are a waste of time.

Patch submitter, please ignore Markus's suggestion; you do not need to
follow it at all.  The person/bot/AI that sent it is being ignored by
almost all Linux kernel maintainers for having a persistent pattern of
behavior of producing distracting and pointless commentary, and
inability to adapt to feedback.  Please feel free to also ignore emails
from them.

thanks,

greg k-h's patch email bot