| Summary: | [gallium] Mapping empty buffer object causes SIGSEGV | ||
|---|---|---|---|
| Product: | Mesa | Reporter: | Wiktor Janas <wixorpeek> |
| Component: | Mesa core | Assignee: | mesa-dev |
| Status: | RESOLVED FIXED | QA Contact: | |
| Severity: | normal | ||
| Priority: | medium | ||
| Version: | git | ||
| Hardware: | x86-64 (AMD64) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
Fixed with commit 97ae4dad1cc24c5e969e6b99f07ece68e239964b. Committed to the 7.9 branch too. Thanks for the test program! |
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The following code triggers SIGSEGV at mesa/state_tracker/st_cb_bufferobjects.c:236, because st_obj->buffer is NULL. #include <stdlib.h> #define GL_GLEXT_PROTOTYPES #include <GL/gl.h> #include <GL/glut.h> int main (int argc, char *argv[]) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_RGBA); glutInitWindowSize(512,512); glutCreateWindow(""); GLuint id; glGenBuffersARB(1, &id); glBindBufferARB(GL_ARRAY_BUFFER_ARB, id); glBufferDataARB(GL_ARRAY_BUFFER_ARB, 0, NULL, GL_STATIC_DRAW); glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0); glBindBufferARB(GL_ARRAY_BUFFER_ARB, id); glMapBuffer(GL_ARRAY_BUFFER_ARB, GL_READ_WRITE_ARB); /* CRASH! */ glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0); return 0; }