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Date:   Tue, 19 Sep 2023 17:02:58 +0100
From:   Matthew Wilcox <willy@infradead.org>
To:     Oleksandr Natalenko <oleksandr@natalenko.name>
Cc:     linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org,
        dri-devel@lists.freedesktop.org,
        Jani Nikula <jani.nikula@linux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@intel.com>,
        Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Andi Shyti <andi.shyti@linux.intel.com>,
        Andrzej Hajda <andrzej.hajda@intel.com>,
        Matthew Auld <matthew.auld@intel.com>,
        Matt Roper <matthew.d.roper@intel.com>,
        Aravind Iddamsetty <aravind.iddamsetty@intel.com>,
        Fei Yang <fei.yang@intel.com>,
        Thomas =?iso-8859-1?Q?Hellstr=F6m?= 
        <thomas.hellstrom@linux.intel.com>,
        Nathan Chancellor <nathan@kernel.org>,
        Chris Wilson <chris@chris-wilson.co.uk>,
        Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>,
        Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org
Subject: Re: [REGRESSION] [BISECTED] Panic in gen8_ggtt_insert_entries() with
 v6.5
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On Tue, Sep 19, 2023 at 04:43:41PM +0100, Matthew Wilcox wrote:
> Could I ask you to try this patch?  I'll follow up with another patch
> later because I think I made another assumption that may not be valid.

Ah, no, never mind.  I thought we could start in the middle of a folio,
but we always start constructing the sg list from index 0 of the file,
so we always start at the first page of a folio.  If this patch solves
your problem, then I think we're done.