All of lore.kernel.org
 help / color / mirror / Atom feed
From: Phillip Potter <phil@philpotter.co.uk>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
	Daniel Vetter <daniel.vetter@ffwll.ch>,
	DRI Development <dri-devel@lists.freedesktop.org>,
	Linux Fbdev development list <linux-fbdev@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] zero-fill colormap in drivers/video/fbdev/core/fbcmap.c
Date: Fri, 2 Apr 2021 09:57:00 +0100	[thread overview]
Message-ID: <YGbcXMfP5pbCkG/9@equinox> (raw)
In-Reply-To: <CAMuHMdVh9JPZKphSi5+KR+BMJL7cQpVifrPBzhR3ees8QBhBXw@mail.gmail.com>

On Thu, Apr 01, 2021 at 11:55:50AM +0200, Geert Uytterhoeven wrote:
> On Thu, Apr 1, 2021 at 12:09 AM Phillip Potter <phil@philpotter.co.uk> wrote:
> > Use kzalloc() rather than kmalloc() for the dynamically allocated parts
> > of the colormap in fb_alloc_cmap_gfp, to prevent a leak of random kernel
> > data to userspace under certain circumstances.
> >
> > Fixes a KMSAN-found infoleak bug reported by syzbot at:
> > https://syzkaller.appspot.com/bug?id=741578659feabd108ad9e06696f0c1f2e69c4b6e
> >
> > Reported-by: syzbot+47fa9c9c648b765305b9@syzkaller.appspotmail.com
> > Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
> 
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> -- 
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds

Dear Geert

Thank you for your review :-)

Regards,
Phil

WARNING: multiple messages have this Message-ID (diff)
From: Phillip Potter <phil@philpotter.co.uk>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
	Daniel Vetter <daniel.vetter@ffwll.ch>,
	Linux Fbdev development list <linux-fbdev@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	DRI Development <dri-devel@lists.freedesktop.org>
Subject: Re: [PATCH] zero-fill colormap in drivers/video/fbdev/core/fbcmap.c
Date: Fri, 2 Apr 2021 09:57:00 +0100	[thread overview]
Message-ID: <YGbcXMfP5pbCkG/9@equinox> (raw)
In-Reply-To: <CAMuHMdVh9JPZKphSi5+KR+BMJL7cQpVifrPBzhR3ees8QBhBXw@mail.gmail.com>

On Thu, Apr 01, 2021 at 11:55:50AM +0200, Geert Uytterhoeven wrote:
> On Thu, Apr 1, 2021 at 12:09 AM Phillip Potter <phil@philpotter.co.uk> wrote:
> > Use kzalloc() rather than kmalloc() for the dynamically allocated parts
> > of the colormap in fb_alloc_cmap_gfp, to prevent a leak of random kernel
> > data to userspace under certain circumstances.
> >
> > Fixes a KMSAN-found infoleak bug reported by syzbot at:
> > https://syzkaller.appspot.com/bug?id=741578659feabd108ad9e06696f0c1f2e69c4b6e
> >
> > Reported-by: syzbot+47fa9c9c648b765305b9@syzkaller.appspotmail.com
> > Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
> 
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> -- 
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds

Dear Geert

Thank you for your review :-)

Regards,
Phil
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

  reply	other threads:[~2021-04-02  8:57 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-31 22:07 [PATCH] zero-fill colormap in drivers/video/fbdev/core/fbcmap.c Phillip Potter
2021-03-31 22:07 ` Phillip Potter
2021-04-01  9:55 ` Geert Uytterhoeven
2021-04-01  9:55   ` Geert Uytterhoeven
2021-04-02  8:57   ` Phillip Potter [this message]
2021-04-02  8:57     ` Phillip Potter
2021-04-02 15:37 ` Greg KH
2021-04-02 15:37   ` Greg KH

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=YGbcXMfP5pbCkG/9@equinox \
    --to=phil@philpotter.co.uk \
    --cc=daniel.vetter@ffwll.ch \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=geert@linux-m68k.org \
    --cc=linux-fbdev@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mchehab+huawei@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.