8092 2015-08-03 15:03:26 +0000 Implementation of the function glXChooseFBConfig in the libGL.so does not match OpenGL documentation 2017-06-15 15:06:31 +0000 1 1 7 Build System, Metadata & Runtime BSPs bsps-meta-fsl-arm 1.8 Other arm RESOLVED OBSOLETE Medium normal 2.0.4 1 i.nikolaenko otavio neena.busireddy otavio richard.purdie tom.hochstein --- New (Never tested) No (bug/feature does not impact docs) oldest_to_newest 52788 0 2623 i.nikolaenko 2015-08-03 15:03:26 +0000 Created attachment 2623 Good example. For SegFault replace an attributeList with NULL in glxChooseFBConfig Hello all! I am using Freescale i.MX6Q processor with latest Fido BSP. I have a problem with application, that uses glXChooseFBConfig funcltion. Application get a Segmentation Fault when call glXChooseFBConfig with 3rd NULL argument. Passing empty list at third argument DO NOT raise a SegFault. From the OpenGL documentation: glXChooseFBConfig returns GLX frame buffer configurations that match the attributes specified in attrib_list, or NULL if no matches are found. If attrib_list is NULL, then glXChooseFBConfig returns an array of GLX frame buffer configurations that are available on the specified screen. Small code example for checking attached Stacktrace: Program received signal SIGSEGV, Segmentation fault. 0x76f99ae8 in __glXInitializeVisualConfigFromTags (config=0x7efffa70, config[at]entry=0x7efffa68, count=count[at]entry=512, bp=0x0, tagged_only=tagged_only[at]entry=1, fbconfig_style_tags=fbconfig_style_tags[at]entry=1) at glxext.c:684 684 glxext.c: No such file or directory. (gdb) where #0 0x76f99ae8 in __glXInitializeVisualConfigFromTags (config=0x7efffa70, config[at]entry=0x7efffa68, count=count[at]entry=512, bp=0x0, tagged_only=tagged_only[at]entry=1, fbconfig_style_tags=fbconfig_style_tags[at]entry=1) at glxext.c:684 #1 0x76f8e458 in ChooseFBConfig (fbconfig_style_tags=1 '\001', attribList=<optimized out>, num_configs=24, configs=0x27860) at glxcmds.c:1869 #2 glXChooseFBConfig (dpy=<optimized out>, screen=<optimized out>, attribList=<optimized out>, nitems=0x7efffb6c) at glxcmds.c:1915 #3 0x000086a0 in main (argc=1, argv=0x7efffcd4) at test-2.c:15 Thread at OpenGL forum: https://www.opengl.org/discussion_boards/showthread.php/194751-i-MX6-glXChooseFBConfig-Segmentation-Fault-%28Segfault%29?p=1275976#post1275976 Reproduced by another person: https://community.freescale.com/thread/330285 Reproducibility 100% of cases. 55569 1 otavio 2015-10-21 16:08:15 +0000 Neena, can you check this please? 61575 2 otavio 2016-04-22 19:12:44 +0000 Neena, could you share an update on this issue? 74218 3 richard.purdie 2017-06-15 15:06:31 +0000 No action on this bug and the release is no longer supported by the project. 2623 2015-08-03 15:03:26 +0000 2015-08-03 15:03:26 +0000 Good example. For SegFault replace an attributeList with NULL in glxChooseFBConfig working_code.c text/x-csrc 321 i.nikolaenko I2luY2x1ZGUgPEdML2dseC5oPgojaW5jbHVkZSA8R0wvZ2wuaD4KI2luY2x1ZGUgPHVuaXN0ZC5o PgojaW5jbHVkZSA8c3RkaW8uaD4KIAoKaW50IG1haW4gKGludCBhcmdjLCBjaGFyICoqIGFyZ3Yp CnsKCURpc3BsYXkgKmRweSA9IFhPcGVuRGlzcGxheSgwKTsKIAoJaW50IG5lbDsKIAoJc3RhdGlj IGludCBhdHRyaWJ1dGVMaXN0W10gPSB7Tm9uZX07CgoJR0xYRkJDb25maWcgKmZiYyA9IGdsWENo b29zZUZCQ29uZmlnKGRweSwgRGVmYXVsdFNjcmVlbihkcHkpLCBhdHRyaWJ1dGVMaXN0LCAmbmVs KTsKCglwcmludGYoIk9LIVxuIik7CgoJcmV0dXJuIDA7Cn0K