[Bug 103246] PoE: GPU hang with mesa >= 17.2.0 + gallium-nine

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103246

            Bug ID: 103246
           Summary: PoE: GPU hang with mesa >= 17.2.0 + gallium-nine
           Product: Mesa
           Version: 17.2
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: kmk3.bugs at gmail.com
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 134818
  --> https://bugs.freedesktop.org/attachment.cgi?id=134818&action=edit
Related packages info

General system info:
System information:
    Wine build: wine-2.18 (Staging)
    Platform: i386
    Version: Windows 7
    Host system: Linux
    Host version: 4.13.5-1-MANJARO

GPU: R9 280X (GCN 1.0)
GPU driver: xf86-video-ati 1:7.10.0-1 (radeonsi)
DE: plasma-desktop 5.10.5-1
Game info: https://appdb.winehq.org/objectManager.php?sClass=version&iId=30942
Game version: 3.0.1e (Steam)

# Overview
So, when using mesa 17.2+ with wine-staging-nine, the whole system crashes
when entering certain areas on PoE.

After trying to enter my Hideout in the game, the loading screen appears for a
few seconds (as usual), then a sound loop occurs for about 3 seconds, then
silence and the whole system is completely unresponsive.
The keyboard does not work and the monitor has no video output (blue screen).
Then, I just hard-reset the system.

Also, a few days ago, the game somehow crashed without bringing the whole
system down, it just showed a "game crashed" dialog box.

# Game-specific info
I tried to enter the affected areas from Highgate (Act 9), which seems to have
no major issues after wandering around a bit.
So far, it seems to crash on Sarn and the personal Hideout.
The only similarity that I can think of is the presence of Vagan and Vorici in
both areas.
But, AFAIK, it seems unlikely that characters textures would cause a GPU hang.

# Rambling
It is the exact same symptom (including the sound loop) that occured on my
6770m with Linux 3.13+, when I tried to run "startx" without setting
"radeon.dpm=0".

# Debug
The whole screen, including the terminal wine is launched from freezes, so I'm
unable to see if wine printed anything during/after the crash.
I tried setting MESA_DEBUG=1 and MESA_LOG_FILE, but nothing is ever written to
the log file (it is not even created).
I'm not sure if it is because everything really hangs, no mesa errors actually
occur or if I need to compile it with debug flags.
In the case of the latter, should I just follow this guide?
https://wiki.ixit.cz/d3d9_debugging

Also, I'm not really sure whether the problem is on mesa or gallium-nine.
If you know how to debug this, please leave a comment.

# Packages
After testing with different packages, the problem occurs only with
wine-staging-nine.
Tested on wine-staging-nine 2.16+ (2.16-2.18) and mesa 17.2.0+ (17.2.0-17.2.2).

Mesa < 17.2.0 has no problems with wine, wine-staging nor wine-staging-nine.
Wine + gallium-nine works well enough with mesa < 17.2.0.

Misc: At least on manjaro, mesa 17.1.8 depends on llvm 4.0 and mesa 17.2+
depends on llvm 5.0.
Not sure if the version could be related to the issue.

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