[Bug 104307] radeon ring 0 stalled for more than ... radeon ... GPU lockup ...

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=104307

            Bug ID: 104307
           Summary: radeon ring 0 stalled for more than ... radeon ... GPU
                    lockup ...
           Product: Mesa
           Version: 17.2
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: narutocanada@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 136241
  --> https://bugs.freedesktop.org/attachment.cgi?id=136241&action=edit
apitrace trace --api gl ./a.out ; mv a.out.trace a.out.mesa-17.2.7.trace

# how to reproduce:
# cd /build/mesa-13.0.6/; make install
rm a.out t.ppm ; gcc gbm5.c -lgbm -lEGL -lGL -lGLU ; apitrace trace --api gl
./a.out ; display t.ppm
mv a.out.trace a.out.mesa-13.0.6.trace
# cd /build/mesa-17.2.7/; make install
echo > /var/log/messages
rm a.out t.ppm ; gcc gbm5.c -lgbm -lEGL -lGL -lGLU ; apitrace trace --api gl
./a.out ; display t.ppm
mv a.out.trace a.out.mesa-17.2.7.trace
# NOTE: nromally this shader runs for about 1 second (depends on GPU),
# but would never reach 10 seconds lockup timer defined in
drivers/gpu/drm/radeon/radeon_drv.c
# something changed in Mesa perhaps ?
# single source file at: https://github.com/narutocanada/smallpt-glsl

Dec 18 01:42:21 localhost kern.err kernel: [ 4272.087147] radeon 0000:00:01.0:
ring 0 stalled for more than 10020msec
Dec 18 01:42:21 localhost kern.warn kernel: [ 4272.089575] radeon 0000:00:01.0:
GPU lockup (current fence id 0x0000000000000019 last fence id
0x000000000000001a on ring 0)
Dec 18 01:42:22 localhost kern.err kernel: [ 4272.587921] radeon 0000:00:01.0:
ring 0 stalled for more than 10521msec
Dec 18 01:42:22 localhost kern.warn kernel: [ 4272.590350] radeon 0000:00:01.0:
GPU lockup (current fence id 0x0000000000000019 last fence id
0x000000000000001a on ring 0)

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