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Date:   Tue, 5 Jan 2021 11:31:38 +0100
From:   Borislav Petkov <bp@alien8.de>
To:     Huang Rui <ray.huang@amd.com>
Cc:     "Koenig, Christian" <Christian.Koenig@amd.com>,
        "dri-devel@lists.freedesktop.org" <dri-devel@lists.freedesktop.org>,
        lkml <linux-kernel@vger.kernel.org>
Subject: Re: 5.11-rc1 TTM list corruption
Message-ID: <20210105103138.GB28649@zn.tnic>
References: <20201231104020.GA4504@zn.tnic>
 <e3bfa0a4-5d0a-bd68-6cc8-73db1d29f22c@amd.com>
 <20210104105802.GD32151@zn.tnic>
 <20210105041213.GA544780@hr-amd>
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In-Reply-To: <20210105041213.GA544780@hr-amd>
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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).
[    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://people.kernel.org/tglx/notes-about-netiquette