linux-kernel - Re: [haswell_crtc_enable] WARNING: CPU: 3 PID: 109 at drivers/gpu/drm/drm_vblank.c:1066 drm_wait_one

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Message-ID: <CA+55aFztuX6PVxuzybv=tkp9kmvUp8QzB3zLU5w=Om49Rad1pg@mail.gmail.com>
Date:   Mon, 30 Oct 2017 12:10:11 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Fengguang Wu <fengguang.wu@...el.com>
Cc:     intel-gfx <intel-gfx@...ts.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Ville Syrjälä <ville.syrjala@...ux.intel.com>
Subject: Re: [haswell_crtc_enable] WARNING: CPU: 3 PID: 109 at
 drivers/gpu/drm/drm_vblank.c:1066 drm_wait_one_vblank+0x18f/0x1a0 [drm]

On Mon, Oct 30, 2017 at 12:00 AM, Fengguang Wu <fengguang.wu@...el.com> wrote:
> CC intel-gfx.

Thanks, these are all interesting (even if some of them seem to be
from random kernels).

Fengguang, is this a new script that you started running? Because I'm
*hoping* it's not that rc6 suddenly seems so flaky, and it's really
that you now have a nice new script that started reporting these
things better, even though many of them may be old?

This particular one I will have to leave to the intel gfx people to comment on.

               Linus