From: Andi Kleen <ak@linux.intel.com>
To: Alexander Martyniuk <alexevgmart@gmail.com>
Cc: stable@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
David Airlie <airlied@redhat.com>,
Sasha Levin <sashal@kernel.org>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Mingyu Wang <25181214217@stu.xidian.edu.cn>,
Lukas Wunner <lukas@wunner.de>
Subject: Re: [PATCH 5.10/5.15/6.1/6.6/6.12] agp/amd64: Fix broken error propagation in agp_amd64_probe()
Date: Mon, 29 Jun 2026 08:40:09 -0700 [thread overview]
Message-ID: <akKR2bNYFokN43Sk@tassilo> (raw)
In-Reply-To: <20260629102124.252403-1-alexevgmart@gmail.com>
On Mon, Jun 29, 2026 at 01:21:23PM +0300, Alexander Martyniuk wrote:
> From: Mingyu Wang <25181214217@stu.xidian.edu.cn>
>
> commit b08472db93b1ccff84a7adec5779d47f0e9d3a30 upstream.
>
> A NULL pointer dereference was observed in the AMD64 AGP driver when
> running in a virtualized environment (e.g. qemu/kvm) without a physical
> AMD northbridge. The crash occurs in amd64_fetch_size() when attempting
> to dereference the pointer returned by node_to_amd_nb(0).
What is special about this virtual environment? Nobody else
seems to have seen that in 20+ years.
Or maybe the Fixes tag is not quite correct and something else more
recent has caused it.
-Andi
next prev parent reply other threads:[~2026-06-29 15:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-29 10:21 [PATCH 5.10/5.15/6.1/6.6/6.12] agp/amd64: Fix broken error propagation in agp_amd64_probe() Alexander Martyniuk
2026-06-29 15:40 ` Andi Kleen [this message]
2026-06-30 1:23 ` Mingyu Wang
2026-06-30 9:21 ` Greg Kroah-Hartman
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