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Re: [Intel-gfx] [PATCH] drm/i915: check if execlist_port is empty before using its content

From Chris Wilson <chris@chris-wilson.co.uk>
Newsgroups linux.kernel
Subject Re: [Intel-gfx] [PATCH] drm/i915: check if execlist_port is empty before using its content
Date 2016-12-23 09:00 +0100
Message-ID <sRsVH-41t-5@gated-at.bofh.it> (permalink)
References <sRqTT-2Or-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Fri, Dec 23, 2016 at 01:46:36PM +0800, changbin.du@intel.com wrote:
> From: "Du, Changbin" <changbin.du@intel.com>
> 
> This patch fix a crash in function reset_common_ring. In this case,
> the port[0].request is null when reset the render ring, so a null
> dereference exception is raised. We need to check execlist_port status
> first.

No. The root cause is whatever got you into the illegal condition in the
first place.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre

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Thread

[PATCH] drm/i915: check if execlist_port is empty before using its content changbin.du@intel.com - 2016-12-23 06:50 +0100
  Re: [PATCH] drm/i915: check if execlist_port is empty before using its content Jani Nikula <jani.nikula@linux.intel.com> - 2016-12-23 08:10 +0100
  Re: [Intel-gfx] [PATCH] drm/i915: check if execlist_port is empty  before using its content Chris Wilson <chris@chris-wilson.co.uk> - 2016-12-23 09:00 +0100
    RE: [Intel-gfx] [PATCH] drm/i915: check if execlist_port is empty  before using its content "Du, Changbin" <changbin.du@intel.com> - 2016-12-26 08:50 +0100

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