linux-kernel - [PATCH 4.15 009/146] drm/i915: Check for fused or unused pipes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 13 Mar 2018 16:22:56 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Jaswinder Singh Rajput <jaswinder@...fectintelligent.com>,
        Jani Nikula <jani.nikula@...el.com>,
        Mika Kahola <mika.kahola@...el.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>
Subject: [PATCH 4.15 009/146] drm/i915: Check for fused or unused pipes

4.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mika Kahola <mika.kahola@...el.com>

commit 9965db26ac0548648309f506dc155a92daa2158f upstream.

We may have fused or unused pipes in our system. Let's check that the pipe
in question is within limits of accessible pipes. In case, that we are not
able to access the pipe, we return early with a warning.

v2: Rephrasing of the commit message (Jani)

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103206
Reported-by: Thomas Gleixner <tglx@...utronix.de>
Tested-by: Jaswinder Singh Rajput <jaswinder@...fectintelligent.com>
Suggested-by: Jani Nikula <jani.nikula@...el.com>
Reviewed-by: Jani Nikula <jani.nikula@...el.com>
Signed-off-by: Mika Kahola <mika.kahola@...el.com>
Signed-off-by: Jani Nikula <jani.nikula@...el.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1513584243-12607-1-git-send-email-mika.kahola@intel.com
(cherry picked from commit 0b7029b7e43fda1304c181a3ade0b429b9edcd9d)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@...el.com>
Cc: <stable@...r.kernel.org> # v4.10+
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/i915/intel_audio.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/i915/intel_audio.c
+++ b/drivers/gpu/drm/i915/intel_audio.c
@@ -754,7 +754,7 @@ static struct intel_encoder *get_saved_e
 {
 	struct intel_encoder *encoder;
 
-	if (WARN_ON(pipe >= INTEL_INFO(dev_priv)->num_pipes))
+	if (WARN_ON(pipe >= ARRAY_SIZE(dev_priv->av_enc_map)))
 		return NULL;
 
 	/* MST */