| Summary: | Segfault when some window is appearing while running full-screen application. | ||
|---|---|---|---|
| Product: | Mesa | Reporter: | bay <bay> |
| Component: | Drivers/DRI/i965 | Assignee: | Eric Anholt <eric> |
| Status: | RESOLVED DUPLICATE | QA Contact: | |
| Severity: | normal | ||
| Priority: | medium | ||
| Version: | git | ||
| Hardware: | x86-64 (AMD64) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: | Backtrace of crash. | ||
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Created attachment 42484 [details] Backtrace of crash. When full-screen application is running and I am changing volume from keyboard, kwin(KDE's window manager) is crashing. Usually, when one changes a volume in KDE, a progress-window appears. Full screen application in my case - Angry Birds game(Wine). Bug appears only when I am using a OpenGL compositing, with XRender compositing all is OK. Bug is quite reproductable. I tested it with mesa from git and with mesa 7.10. I have a Intel Corporation Mobile GM965 Graphics Controller. I think there is a problem with prepare_wm_surfaces(..) in mesa/drivers/dri/i965/brw_wm_surface_state.c : if (ctx->DrawBuffer->_NumColorDrawBuffers >= 1) { for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) { struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[i]; struct intel_renderbuffer *irb = intel_renderbuffer(rb); struct intel_region *region = irb ? irb->region : NULL; brw_add_validated_bo(brw, region->buffer); ........ When irb is NULL, region is NULL too, and region->buffer causes a segfault.