linux-kernel - Re: AMD IOMMU causing filesystem corruption

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Date:   Tue, 4 Apr 2017 00:11:31 -0700
From:   Samuel Sieb <samuel@...b.net>
To:     Joerg Roedel <joro@...tes.org>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: AMD IOMMU causing filesystem corruption

On 04/03/2017 08:37 PM, Samuel Sieb wrote:
> On 04/03/2017 02:39 PM, Joerg Roedel wrote:
>> You have a system based on the AMD Stoney platform, on which the PCI-ATS
>> feature of the GPU is broken, as we recently found out.
>>
>> Can you please test whether the attached patch fixes the issue on your
>> machine?
>>
> Yes, that works, thank you!
>
Unfortunately, that turned out to be a bit premature.  After compiling a 
kernel on it remotely over ssh (not interacting with the logged in 
desktop), a reboot failed with endless completion-wait loop timeout 
messages and after a force poweroff and restart it won't boot.  The EFI 
filesystem was even destroyed, probably because the kernel installation 
modified a file on there.