From: Timur Tabi <ttabi@nvidia.com>
To: "sdl@nppct.ru" <sdl@nppct.ru>, "lyude@redhat.com" <lyude@redhat.com>
Cc: "bskeggs@redhat.com" <bskeggs@redhat.com>,
"simona@ffwll.ch" <simona@ffwll.ch>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"nouveau@lists.freedesktop.org" <nouveau@lists.freedesktop.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"dakr@kernel.org" <dakr@kernel.org>,
"maarten.lankhorst@linux.intel.com"
<maarten.lankhorst@linux.intel.com>,
"lvc-project@linuxtesting.org" <lvc-project@linuxtesting.org>,
"mripard@kernel.org" <mripard@kernel.org>,
"stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: Re: [PATCH] drm/nouveau/disp: Fix potential NULL pointer dereference in nouveau_dp_irq
Date: Mon, 16 Mar 2026 17:42:57 +0000 [thread overview]
Message-ID: <ac4867a4c6da6aef61b189960c0142a660b2122b.camel@nvidia.com> (raw)
In-Reply-To: <20260316172631.82304-1-sdl@nppct.ru>
On Mon, 2026-03-16 at 17:26 +0000, Alexey Nepomnyashih wrote:
> nouveau_dp_irq() dereferences the encoder pointer before verifying
> that it is valid. The drm pointer is initialized using
> outp->base.base.dev prior to the NULL check:
>
> struct nouveau_drm *drm = nouveau_drm(outp->base.base.dev);
>
> If no encoder is associated with the connector, this leads to a
> NULL pointer dereference.
Can you provide an example of how/when this would be the case?
prev parent reply other threads:[~2026-03-16 17:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-16 17:26 Alexey Nepomnyashih
2026-03-16 17:42 ` Timur Tabi [this message]
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