Created attachment 119062 [details] dmesg with GPU_HANG Software versions: 4.2.1-040201-generic OpenGL version string: 3.0 Mesa 11.1.0-devel (git-13a5805) GPU hardware: OpenGL renderer string: Mesa DRI Intel(R) HD Graphics (Cherryview) 00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:22b1] (rev 21) CPU hardware: x86_64 Genuine Intel(R) CPU @ 1.52GHz CTS version: git@67ae88f31295 command: ./glcts --deqp-case=ES31-CTS.shader_storage_buffer_object* Environment: Mesa built with: --enable-debug export MESA_GLES_VERSION_OVERRIDE=3.1 export MESA_EXTENSION_OVERRIDE=GL_ARB_compute_shader ------------------------------------------- When running all the SSBO tests of the OpenGL ES 3.1 CTS, execution stops after: 'ES31-CTS.shader_storage_buffer_object.advanced-indirectAddressing-case1-cs'.. with: intel_do_flush_locked failed: Input/output error dmesg contains: [drm] GPU HANG: ecode 8:0:0x85ddfffb, in glcts [11749], reason: Ring hung, action: reset if I run the ES31-CTS.shader_storage_buffer_object.advanced-indirectAddressing-case1-cs alone there are no issues.
If these pass on Broadwell but break on Braswell, you might see if the SSBO code is emitting integer MUL instructions for indirect address calculations. CHV/BSW have funky MUL rules...
(In reply to Kenneth Graunke from comment #1) > If these pass on Broadwell but break on Braswell, you might see if the SSBO > code is emitting integer MUL instructions for indirect address calculations. > CHV/BSW have funky MUL rules... Yeah, that can happen. I see this for some local ssbo tests I have that use indirect addressing: vec1 ssa_7 = f2i ssa_6 vec1 ssa_8 = imul ssa_7, ssa_3 vec1 ssa_9 = iadd ssa_8, ssa_2 ntrinsic store_ssbo_indirect (ssa_1, ssa_0, ssa_9) () (0, 1) which leads to: mov(8) g3<1>D g2<8,8,1>F { align1 1Q compacted }; mul(8) g4<1>D g3<8,8,1>D 16D { align1 1Q compacted }; add(8) g6<1>D g4<8,8,1>D 12D { align1 1Q compacted }; send(8) null g5<8,8,1>UD data ( DC untyped surface write, 1, 46) mlen 3 rlen 0 { align1 1Q };
This issue is not reproducible with Mesa git@af7c98
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