linux-kernel - Re: 5.11-rc1 TTM list corruption

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Message-ID: <3bbdaf4c-882e-a5f0-177b-36bf582de26c@amd.com>
Date:   Tue, 5 Jan 2021 12:34:31 +0100
From:   Christian König <christian.koenig@....com>
To:     Huang Rui <ray.huang@....com>, Borislav Petkov <bp@...en8.de>
Cc:     "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: 5.11-rc1 TTM list corruption

Am 05.01.21 um 12:08 schrieb Huang Rui:
> On Tue, Jan 05, 2021 at 06:31:38PM +0800, Borislav Petkov wrote:
>> Hi,
>>
>> On Tue, Jan 05, 2021 at 12:12:13PM +0800, Huang Rui wrote:
>>> I am reproducing this issue as well, are you using a Raven board?
>> I have no clue what Raven is. The workstation I triggered it once on, has:
>>
>> [    7.563968] [drm] radeon kernel modesetting enabled.
>> [    7.581417] [drm] initializing kernel modesetting (CAICOS 0x1002:0x6779 0x174B:0xE164 0x00).
> Ah, this asic is a bit old and still use radeon driver. So we didn't
> reproduce it on amdgpu driver. I don't have such the old asic in my hand.
> May we know whether this issue can be duplicated after SI which is used
> amdgpu module (not sure whether you have recent APU or GPU)?

Ah! Thanks Ray for pointing this out. I have SI based hardware here.

Going to try this in a few minutes.

Thanks,
Christian.

>
> Thanks,
> Ray
>
>> [    7.609217] [drm] Detected VRAM RAM=2048M, BAR=256M
>> [    7.614031] [drm] RAM width 64bits DDR
>> [    7.639665] [drm] radeon: 2048M of VRAM memory ready
>> [    7.644557] [drm] radeon: 1024M of GTT memory ready.
>> [    7.649451] [drm] Loading CAICOS Microcode
>> [    7.653548] [drm] Internal thermal controller without fan control
>> [    7.661221] [drm] radeon: dpm initialized
>> [    7.665227] [drm] GART: num cpu pages 262144, num gpu pages 262144
>> [    7.671821] [drm] enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0
>> [    7.703858] [drm] PCIE GART of 1024M enabled (table at 0x0000000000162000).
>> [    7.749689] [drm] radeon: irq initialized.
>> [    7.769826] [drm] ring test on 0 succeeded in 1 usecs
>> [    7.774797] [drm] ring test on 3 succeeded in 3 usecs
>> [    7.955500] [drm] ring test on 5 succeeded in 1 usecs
>> [    7.960468] [drm] UVD initialized successfully.
>> [    7.965047] [drm] ib test on ring 0 succeeded in 0 usecs
>> [    7.970316] [drm] ib test on ring 3 succeeded in 0 usecs
>> [    8.626877] [drm] ib test on ring 5 succeeded
>> [    8.631376] [drm] Radeon Display Connectors
>> [    8.635496] [drm] Connector 0:
>> [    8.638503] [drm]   HDMI-A-1
>> [    8.641339] [drm]   HPD2
>> [    8.643835] [drm]   DDC: 0x6440 0x6440 0x6444 0x6444 0x6448 0x6448 0x644c 0x644c
>> [    8.651102] [drm]   Encoders:
>> [    8.654022] [drm]     DFP1: INTERNAL_UNIPHY1
>> [    8.658224] [drm] Connector 1:
>> [    8.661232] [drm]   DVI-D-1
>> [    8.663982] [drm]   HPD4
>> [    8.666479] [drm]   DDC: 0x6460 0x6460 0x6464 0x6464 0x6468 0x6468 0x646c 0x646c
>> [    8.673745] [drm]   Encoders:
>> [    8.676665] [drm]     DFP2: INTERNAL_UNIPHY
>> [    8.680782] [drm] Connector 2:
>> [    8.683789] [drm]   VGA-1
>> [    8.686369] [drm]   DDC: 0x6430 0x6430 0x6434 0x6434 0x6438 0x6438 0x643c 0x643c
>> [    8.693636] [drm]   Encoders:
>> [    8.696555] [drm]     CRT1: INTERNAL_KLDSCP_DAC1
>> [    8.788923] [drm] fb mappable at 0xE0363000
>> [    8.793036] [drm] vram apper at 0xE0000000
>> [    8.797064] [drm] size 9216000
>> [    8.800071] [drm] fb depth is 24
>> [    8.803249] [drm]    pitch is 7680
>> [    8.807106] fbcon: radeondrmfb (fb0) is primary device
>> [    8.918927] radeon 0000:1d:00.0: [drm] fb0: radeondrmfb frame buffer device
>> [    8.938461] [drm] Initialized radeon 2.50.0 20080528 for 0000:1d:00.0 on minor 0
>>
>> HTH.
>>
>> -- 
>> Regards/Gruss,
>>      Boris.
>>
>> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpeople.kernel.org%2Ftglx%2Fnotes-about-netiquette&amp;data=04%7C01%7Cray.huang%40amd.com%7C31b8dcd4040e4a49380e08d8b16517ad%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637454395066317813%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=al4lLGA%2BCdHK4HzO8M5VJthY8Iv71xQ0TsDGwJpgs1A%3D&amp;reserved=0