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]
Message-ID: <09d89b1c-8c78-7671-a385-99c6a8910fde@quicinc.com>
Date:   Mon, 28 Aug 2023 15:06:14 +0530
From:   "Maulik Shah (mkshah)" <quic_mkshah@...cinc.com>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>
CC:     <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Neil Armstrong <neil.armstrong@...aro.org>
Subject: Re: [PATCH 1/2] irqchip/qcom-pdc: don't read version register if it
 is not available

Hi Dmitry,

This patch may be useful if there was a case where some PDCs don't have 
version register populated/available,
In all PDC versions, version register is always available but due to reg 
size not good enough in device tree for SM8150 it failed to read.

reg size in device node must be expanded if its too small to access all 
registers and i think
additional check in driver to check if size is good enough would not be 
of much use.

Thanks,
Maulik

On 8/26/2023 3:05 AM, Dmitry Baryshkov wrote:

> On Qualcomm SM8150 the PDC resource has size 0x400. When PDC driver
> tries to read the version register (0x1000), it reads past the end of
> this resource, causing kernel crash.
>
> Check the size of PDC resource before reading the PDC_VERSION register.
>
> Fixes: bc82cc42644b ("irqchip/qcom-pdc: Add support for v3.2 HW")
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
>

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ