[Bug 75900] New: GPU lockup or app segfault in several games (bisected)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75900

          Priority: medium
            Bug ID: 75900
          Assignee: dri-devel at lists.freedesktop.org
           Summary: GPU lockup or app segfault in several games (bisected)
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: b.bellec at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/Gallium/r600
           Product: Mesa

Several Steam games crash since this commit:
67aef6dafa29fed008ea6065c425a6a92a651be9
winsys/radeon: if there's VRAM-only usage, keep it
author: Marek Olšák

Games which crash:
- Left 4 Dead 2: GPU lockup after 15-20 seconds of gameplay. If I set the gfx
details lower, I can play more before a lockup (60 seconds I would say).
- Metro Last Light: GPU lockup
- Serious Sam 3: segfault

What I call a "GPU lockup":
- game freezes
- sound freeze and repeat
- screen is dark
- screen then go in "Out of range" mode
- I need to hard reboot

Games which doesn't crash:
- Half-Life² Episode Two
- Team Fortress 2
- Counter Strike Source
- Unigine Heaven
- Unigine Valley

Hardware:
AMD CYPRESS (HD5850 with 1GB VRAM)
I can also test with RV770 if necessary.

Software:
Fedora 19 x86-64
kernel 3.13.5-101.fc19.x86_64
libdrm 2.4.50

Build:
./autogen.sh --with-gallium-drivers=r600 --with-dri-drivers=
--enable-texture-float --disable-dri3 --disable-r600-llvm-compiler
--disable-gallium-llvm --enable-32-bit CFLAGS="-O2 -m32 -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64" CXXFLAGS="-O2 -m32" --libdir=/usr/lib

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