linux-kernel - Re: [PATCH][next] drm/i915/gtt: set err to -ENOMEM on memory allocation failure

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Message-ID: <155873430650.6190.1054401334708975483@skylake-alporthouse-com>
Date:   Fri, 24 May 2019 22:45:06 +0100
From:   Chris Wilson <chris@...is-wilson.co.uk>
To:     Colin King <colin.king@...onical.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        dri-devel@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] drm/i915/gtt: set err to -ENOMEM on memory allocation
 failure

Quoting Colin King (2019-05-24 22:26:27)
> From: Colin Ian King <colin.king@...onical.com>
> 
> Currently when the allocation of ppgtt->work fails the error return
> path via err_free returns an uninitialized value in err. Fix this
> by setting err to the appropriate error return of -ENOMEM.
> 
> Addresses-Coverity: ("Uninitialized scalar variable")
> Fixes: d3622099c76f ("drm/i915/gtt: Always acquire struct_mutex for gen6_ppgtt_cleanup")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Saw that last night but got distracted by the panic-on-boot...
Reviewed-by: Chris Wilson <chris@...is-wilson.co.uk>
-Chris