[Bug 82683] Segfault in glBufferSubData

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82683

--- Comment #5 from Tapani Pälli <lemody at gmail.com> ---
Created attachment 106164
  --> https://bugs.freedesktop.org/attachment.cgi?id=106164&action=edit
workaround

The error is that intel_bufferobj_subdata does not take in to account that
drm_intel_gem_bo_map_unsynchronized can fail. Attaching a workaround/fix to the
problem. With this patch applied, test fails appropriately:

--- 8< ----
initializing..
GL_VENDOR: Intel Open Source Technology Center
GL_RENDERER: Mesa DRI Intel(R) Ivybridge Mobile 
Mesa: User error: GL_OUT_OF_MEMORY in glGenVertexArrays
GL_OUT_OF_MEMORY gen/binding

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