From: Joerg Roedel <joro@8bytes.org>
To: Ricardo Ribalda <ribalda@chromium.org>
Cc: Matthias Brugger <matthias.bgg@gmail.com>,
Yong Wu <yong.wu@mediatek.com>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, iommu@lists.linux.dev,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] iommu/mediatek: Fix crash on isr after kexec()
Date: Mon, 5 Dec 2022 11:55:45 +0100 [thread overview]
Message-ID: <Y43OMbwJUTv0dmOt@8bytes.org> (raw)
In-Reply-To: <20221125-mtk-iommu-v2-0-e168dff7d43e@chromium.org>
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@chromium.org>
Applied with commit-message spelling fix.
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prev parent reply other threads:[~2022-12-05 10:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-28 22:16 [PATCH v2] iommu/mediatek: Fix crash on isr after kexec() Ricardo Ribalda
2022-11-29 11:48 ` Robin Murphy
2022-11-29 15:08 ` AngeloGioacchino Del Regno
2022-12-05 10:55 ` Joerg Roedel [this message]
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