linux-kernel - Re: [v4l-dvb-maintainer] Re: dvb shared datastructure bug?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 13 Feb 2007 14:21:05 +0100
From:	Marcel Siegert <mws@...uxtv.org>
To:	Trent Piepho <xyzzy@...akeasy.org>
Cc:	Jakub Jelinek <jakub@...hat.com>,
	Manu Abraham <abraham.manu@...il.com>,
	v4l-dvb-maintainer@...uxtv.org, mchehab@...radead.org,
	linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [v4l-dvb-maintainer] Re: dvb shared datastructure bug?

On Tuesday 13 February 2007, Trent Piepho wrote:
> On Tue, 13 Feb 2007, Jakub Jelinek wrote:
> > Wouldn't it be better to kmalloc both struct dvb_device and
> > struct file_operations together instead of doing 2 separate allocations?
> > struct dvd_device_plus_fops
> > {
> >   struct dvb_device dev;
> >   struct file_operations fops;
> > } *dev_fops = kmalloc (sizeof (struct dvd_device_plus_fops), GFP_KERNEL);
> > *pdvbdev = dvbdev = (struct dvb_device *)dev_fops;
> > if (dev_fops == NULL)
> >   error handling;
> > memset (&dev_fops->fops, 0, sizeof (dev_fops->fops));
> > ...
> > dvbdev->fops = &dev_fops->fops;
> 
> Maybe change struct dvb_device:
> 
>  struct dvb_device {
>          struct list_head list_head;
> -        struct file_operations *fops;
> +        struct file_operations fops;
>          struct dvb_adapter *adapter;
> 
> 
hi trent, 

your suggestion is correct and useful, 
but this would mean a lot of more work to do, 
and maybe creates new issues.

we should get a working - non issued - v4l-dvb tree and
afterwards start to review, optimize things.

can we put that on wait for the future?

regards 
marcel
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/