linux-kernel - Re: [PATCH] video: fbdev: arkfb: fix possible object reference leak

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-Id: <202310061634.02110.linux@zary.sk>
Date:   Fri, 6 Oct 2023 16:34:01 +0200
From:   Ondrej Zary <linux@...y.sk>
To:     Helge Deller <deller@....de>
Cc:     Zhang Shurong <zhang_shurong@...mail.com>, tzimmermann@...e.de,
        jiapeng.chong@...ux.alibaba.com, javierm@...hat.com,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] video: fbdev: arkfb: fix possible object reference leak

On Friday 06 October 2023, Helge Deller wrote:
> On 10/5/23 09:01, Zhang Shurong wrote:
> > Add missing pci_disable_device() in error path in ark_pci_probe().
> 
> Do you have this hardware and tested your patch?
> I'm sure there is a reason, why "pci_disable_device()" was commented
> out in the original submission in commit 681e14730c73c...

pci_disable_device() call is disabled in many fbdev drivers because calling it might prevent display from working.

> 
> Additionally I'm wondering why your patch doesn't show up in
> the fbdev patchwork, although you added linux-fbdev mailing list.
> Probably a vger issue.
> 
> Helge
> 
> 
> > Signed-off-by: Zhang Shurong <zhang_shurong@...mail.com>
> > ---
> >   drivers/video/fbdev/arkfb.c | 4 ++--
> >   1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/video/fbdev/arkfb.c b/drivers/video/fbdev/arkfb.c
> > index 60a96fdb5dd8..6c4e5065646f 100644
> > --- a/drivers/video/fbdev/arkfb.c
> > +++ b/drivers/video/fbdev/arkfb.c
> > @@ -1064,7 +1064,7 @@ static int ark_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
> >   err_dac:
> >   	pci_release_regions(dev);
> >   err_request_regions:
> > -/*	pci_disable_device(dev); */
> > +	pci_disable_device(dev);
> >   err_enable_device:
> >   	framebuffer_release(info);
> >   	return rc;
> > @@ -1085,7 +1085,7 @@ static void ark_pci_remove(struct pci_dev *dev)
> >
> >   		pci_iounmap(dev, info->screen_base);
> >   		pci_release_regions(dev);
> > -/*		pci_disable_device(dev); */
> > +		pci_disable_device(dev);
> >
> >   		framebuffer_release(info);
> >   	}
> 
> 



-- 
Ondrej Zary