linux-kernel - Re: Linux 5.8-rc1 BUG unable to handle page fault (snd

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Date:   Mon, 15 Jun 2020 15:04:07 -0600
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Takashi Iwai <tiwai@...e.de>, David Rientjes <rientjes@...gle.com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Christoph Hellwig <hch@....de>,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: Linux 5.8-rc1 BUG unable to handle page fault (snd_pcm)

On 6/15/20 2:53 PM, Shuah Khan wrote:
> On 6/15/20 1:57 PM, Takashi Iwai wrote:
>> On Mon, 15 Jun 2020 20:48:11 +0200,
>> Shuah Khan wrote:
>>>
>>> I am seeing the following problem on my system. I haven't started debug
>>> yet. Is this a known issue?
>>
>> Yes, the recent fix by David should paper over it:
>>    
>> http://lore.kernel.org/r/alpine.DEB.2.22.394.2006110025250.13899@chino.kir.corp.google.com 
>>
>> IIRC, Christoph already merged it in his tree.
>>
>> I also made another fix series in the sound driver side (found in
>> topic/dma-fix2 branch in my sound.git tree).
>> But I guess I'll queue it for 5.9 after more testing.
>>
>>
> 
> David and Takashi,
> 
> I applied the patch David pointed me to.
> 
> http://git.infradead.org/users/hch/dma-mapping.git/commitdiff/dbed452a078d56bc7f1abecc3edd6a75e8e4484e 
> 
> 
> I have CONFIG_AMD_MEM_ENCRYPT enabled. Building now. Will keep
> you updated.
> 

This patch took care of the problem.

thanks,
-- Shuah