linux-kernel - Re: [PATCH] drm/i915: Uninitialized variable in i915_gem_object_map

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Date:   Thu, 24 Sep 2020 10:26:52 +0200
From:   Christoph Hellwig <hch@....de>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Hellwig <hch@....de>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Matthew Auld <matthew.auld@...el.com>,
        Abdiel Janulgue <abdiel.janulgue@...ux.intel.com>,
        Dave Airlie <airlied@...hat.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] drm/i915: Uninitialized variable in
 i915_gem_object_map_page()

On Thu, Sep 24, 2020 at 11:18:30AM +0300, Dan Carpenter wrote:
> The "i" iterator is never set to zero.  This probably doesn't affect
> testing because GCC sometimes initializes variables and also we have a
> new pluggin to initialize stack variables to zero.
> 
> Fixes: 7edd32a9e614 ("drm/i915: use vmap in i915_gem_object_map")
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> ---
> Hi Andrew, this should probably go through the -mm tree and get folded
> into the original patch.

FYI, I'll need to resend anyway, and I've folded this into the latest
branch.