linux-kernel - Re: [PATCH v2] iommu/mediatek: Fix crash on isr after kexec()

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] [day] [month] [year] [list]

Message-ID: <Y43OMbwJUTv0dmOt@8bytes.org>
Date:   Mon, 5 Dec 2022 11:55:45 +0100
From:   Joerg Roedel <joro@...tes.org>
To:     Ricardo Ribalda <ribalda@...omium.org>
Cc:     Matthias Brugger <matthias.bgg@...il.com>,
        Yong Wu <yong.wu@...iatek.com>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, iommu@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] iommu/mediatek: Fix crash on isr after kexec()

On Mon, Nov 28, 2022 at 11:16:48PM +0100, Ricardo Ribalda wrote:
> If the system is rebooted via isr(), the IRQ handler might be triggerd
> before the domain is initialized. Resulting on an invalid memory access
> error.
> 
> Fix:
> [    0.500930] Unable to handle kernel read from unreadable memory at virtual address 0000000000000070
> [    0.501166] Call trace:
> [    0.501174]  report_iommu_fault+0x28/0xfc
> [    0.501180]  mtk_iommu_isr+0x10c/0x1c0
> 
> Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>

Applied with commit-message spelling fix.