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From: "Maciej W. Rozycki" <macro@orcam.me.uk>
To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	Linux Fbdev development list <linux-fbdev@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Daniel Vetter <daniel@ffwll.ch>,
	syzbot <syzbot+1f29e126cf461c4de3b3@syzkaller.appspotmail.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
	Colin King <colin.king@canonical.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jani Nikula <jani.nikula@intel.com>,
	Jiri Slaby <jirislaby@kernel.org>,
	syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
	"Antonino A. Daplas" <adaplas@gmail.com>
Subject: Re: [PATCH v2] tty: vt: always invoke vc->vc_sw->con_resize callback
Date: Sat, 15 May 2021 18:32:58 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.21.2105151828380.3032@angie.orcam.me.uk> (raw)
In-Reply-To: <alpine.DEB.2.21.2105151815040.3032@angie.orcam.me.uk>

On Sat, 15 May 2021, Maciej W. Rozycki wrote:

> On Sat, 15 May 2021, Tetsuo Handa wrote:
> 
> > diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
> > index 3406067985b1..22bb3892f6bd 100644
> > --- a/drivers/video/fbdev/core/fbcon.c
> > +++ b/drivers/video/fbdev/core/fbcon.c
> > @@ -2019,7 +2019,7 @@ static int fbcon_resize(struct vc_data *vc, unsigned int width,
> >  			return -EINVAL;
> >  
> >  		pr_debug("resize now %ix%i\n", var.xres, var.yres);
> > -		if (con_is_visible(vc)) {
> > +		if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) {
> >  			var.activate = FB_ACTIVATE_NOW |
> >  				FB_ACTIVATE_FORCE;
> >  			fb_set_var(info, &var);
> 
>  LGTM, although I'll yet try to verify it with hardware.  But it'll have 
> to wait another week or so as I'm currently away from my lab and this 
> requires physical presence.

 NB I suggest that you request your change to be backported, i.e. post v3 
with:

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org # v2.6.12+

  Maciej

  reply	other threads:[~2021-05-15 16:33 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-19 17:33 BUG: unable to handle kernel paging request at ffffc90000669000, IP: [<ffffffff8139d84a>] bitfill_un Tommi Rantala
2019-12-10 16:38 ` BUG: unable to handle kernel paging request in sys_imageblit syzbot
2020-06-19  4:56   ` syzbot
2019-12-27  7:13 ` BUG: unable to handle kernel paging request in vga16fb_imageblit syzbot
2020-05-08  7:07 ` BUG: unable to handle kernel paging request in vga16fb_imageblit (2) syzbot
2021-05-01 20:31   ` [syzbot] " syzbot
2021-05-02  1:53   ` syzbot
2021-05-03 13:41     ` Tetsuo Handa
2021-05-07 11:09       ` Tetsuo Handa
2021-05-14 16:19         ` [PATCH] video: fbdev: vga16fb: fix OOB write in vga16fb_imageblit() Tetsuo Handa
2021-05-14 17:29           ` Linus Torvalds
2021-05-14 17:37             ` Linus Torvalds
2021-05-14 18:23               ` Linus Torvalds
2021-05-14 20:25             ` Maciej W. Rozycki
2021-05-14 20:32               ` Linus Torvalds
2021-05-14 21:10                 ` Linus Torvalds
2021-05-15  7:43                   ` [PATCH v2] tty: vt: always invoke vc->vc_sw->con_resize callback Tetsuo Handa
2021-05-15 16:21                     ` Maciej W. Rozycki
2021-05-15 16:32                       ` Maciej W. Rozycki [this message]
2021-05-15 16:41                         ` Linus Torvalds
2021-05-17 13:13                           ` Daniel Vetter
2021-05-15 16:11                 ` [PATCH] video: fbdev: vga16fb: fix OOB write in vga16fb_imageblit() Maciej W. Rozycki
2021-05-17 13:07                 ` Daniel Vetter
2021-05-17 13:10                   ` Daniel Vetter
2021-05-15  0:45               ` Tetsuo Handa
2020-05-12  6:55 ` BUG: unable to handle kernel paging request in bitfill_aligned syzbot
2020-10-06  8:18 ` BUG: unable to handle kernel paging request in cfb_imageblit syzbot
2020-12-18 15:26   ` syzbot
2020-12-18 15:27     ` Dmitry Vyukov

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