linux-kernel - Re: Graphic corruption with i915 (2.6.39.1)

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: <BANLkTims0E0jfr+m2GH+k6bc-dvT5FWtSA@mail.gmail.com>
Date:	Thu, 16 Jun 2011 15:24:21 -0300
From:	Raúl Benencia <mail@...nencia.com.ar>
To:	Leandro Lucarella <luca@...cax.com.ar>
Cc:	Chris Wilson <chris@...is-wilson.co.uk>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	David Airlie <airlied@...ux.ie>,
	intel-gfx@...ts.freedesktop.org
Subject: Re: Graphic corruption with i915 (2.6.39.1)

2011/6/16 Leandro Lucarella <luca@...cax.com.ar>
>
> Chris Wilson, el 16 de junio a las 17:39 me escribiste:
> > On Thu, 16 Jun 2011 13:18:03 -0300, Leandro Lucarella <luca@...cax.com.ar> wrote:
> > > cannot access /sys/kernel/debug/dri/0/i915_error_state: No such file or directory
> > >
> > > The debug directory is not present, should I boot or compile with some
> > > particular option to enable it?
> >
> > You need to compile with CONFIG_DEBUGFS and at runtime
> > "mount -tdebugfs debug /sys/kernel/debug".
> >
> > The /sys/kernel/debug/dri/0/i915_error_state will only be populated
> > after a hang is detected.
>
> OK, I had CONFIG_DEBUGFS but never mounted it. Unfortunately I rebooted
> since the problem, so now that file says: no error state collected
>
> I'll get the contents when it happens again.
>
> --
> Leandro Lucarella (AKA luca)                     http://llucax.com.ar/
> ----------------------------------------------------------------------
> GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145  104C 949E BFB6 5F5A 8D05)
> ----------------------------------------------------------------------
> The world's best known word is "okay"
> The second most well-known word is "Coca-Cola"

I'm having exactly the same problem. It happens pretty randomly, but
I've noticed that the frequency in which it occurs is highly increased
when libflashplayer.so is used. Unfortunately I didn't compile my
kernel with CONFIG_DEBUGFS. I'll change this and if I come across
anything interesting, I'll let you know.

Cheers,
--
Raúl Benencia
--
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/