Bug#917280: kernel panic on intel gen4 gfx card

To: "917280@bugs.debian.org" <917280@bugs.debian.org>, "intel-gfx@lists.freedesktop.org" <intel-gfx@lists.freedesktop.org>, "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
Cc: "stable@vger.kernel.org" <stable@vger.kernel.org>, "chris@chris-wilson.co.uk" <chris@chris-wilson.co.uk>
Subject: Bug#917280: kernel panic on intel gen4 gfx card
From: ? ? <zhangn1985@outlook.com>
Date: Tue, 25 Dec 2018 15:45:21 +0000
Message-id: <[🔎] DM6PR04MB45543AC3E37D38889DF4FFB1CDB40@DM6PR04MB4554.namprd04.prod.outlook.com>
Reply-to: ? ? <zhangn1985@outlook.com>, 917280@bugs.debian.org
References: <[🔎] DM6PR04MB45549CAC1B9D259B5A8684A5CDB40@DM6PR04MB4554.namprd04.prod.outlook.com>

Hi, Greg

I found on Debian testing with kernel 4.18.20 fail boot, kernel panic
on i915. and reported it to Debian bug 917280 [0], with panic log[1].

after revert:

commit 06e562e7f515292ea7721475950f23554214adde
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Mon Nov 5 09:43:05 2018 +0000

    drm/i915/ringbuffer: Delay after EMIT_INVALIDATE for gen4/gen5

System boots to desktop.

[0]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=917280
[1]:
https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=917280;filename=dmesg.txt;msg=10

BR.
Ning.

Reply to:

Follow-Ups:
- Bug#917280: kernel panic on intel gen4 gfx card
  - From: Ben Hutchings <ben@decadent.org.uk>

References:
- Bug#917280: Linux-4.18.20 fail to boot on old intel gfx card
  - From: ? ? <zhangn1985@outlook.com>

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