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Reply-To: christian.koenig@amd.com
Subject: Re: [bug] 5.11-rc5 brought page allocation failure issue
 [ttm][amdgpu]
To:     David Rientjes <rientjes@google.com>,
        Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Cc:     =?UTF-8?Q?Christian_K=c3=b6nig?= <christian.koenig@amd.com>,
        Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
        amd-gfx list <amd-gfx@lists.freedesktop.org>
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From:   =?UTF-8?Q?Christian_K=c3=b6nig?= <ckoenig.leichtzumerken@gmail.com>
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Date:   Wed, 3 Feb 2021 14:22:42 +0100
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Am 31.01.21 um 02:03 schrieb David Rientjes:
> On Sat, 30 Jan 2021, David Rientjes wrote:
>
>> On Sun, 31 Jan 2021, Mikhail Gavrilov wrote:
>>
>>> The 5.11-rc5 (git 76c057c84d28) brought a new issue.
>>> Now the kernel log is flooded with the message "page allocation failure".
>>>
>>> Trace:
>>> msedge:cs0: page allocation failure: order:10,
>> Order-10, wow!
>>
>> ttm_pool_alloc() will start at order-10 and back off trying smaller orders
>> if necessary.  This is a regression introduced in
>>
>> commit bf9eee249ac2032521677dd74e31ede5429afbc0
>> Author: Christian König <christian.koenig@amd.com>
>> Date:   Wed Jan 13 14:02:04 2021 +0100
>>
>>      drm/ttm: stop using GFP_TRANSHUGE_LIGHT
>>
>> Namely, it removed the __GFP_NOWARN that we otherwise require.  I'll send
>> a patch in reply.
>>
> Looks like Michel Dänzer <michel@daenzer.net> already sent a patch that
> should fix this:
> https://lore.kernel.org/lkml/20210128095346.2421-1-michel@daenzer.net/

Yeah, known issue. I already pushed Michel's fix to drm-misc-fixes. 
Should land in the next -rc by the weekend.

Regards,
Christian.