[Mesa-dev] Assertion failure on SandyBridge

[Kenneth Graunke]

On 01/25/2012 02:10 PM, Anuj Phogat wrote:
> On Wed, Jan 25, 2012 at 12:22 PM, Paul Berry <stereotype441 at gmail.com
> <mailto:stereotype441 at gmail.com>> wrote:
>
>     On 25 January 2012 11:42, Anuj Phogat <anuj.phogat at gmail.com
>     <mailto:anuj.phogat at gmail.com>> wrote:
>
>         Hi,
>
>         I'm getting following assertion failure on executing any OpenGL
>         application including glxinfo with mesa master (dc435ae):
>
>         glxinfo: brw_program.c:261: brwInitFragProgFuncs: Assertion
>         `functions->ProgramStringNotify == _tnl_program_string' failed.
>
>         Program received signal SIGABRT, Aborted.
>         0x00110416 in __kernel_vsyscall ()
>         (gdb) bt
>         #0  0x00110416 in __kernel_vsyscall ()
>         #1  0x4dc3698f in raise () from /lib/libc.so.6
>         #2  0x4dc382d5 in abort () from /lib/libc.so.6
>         #3  0x4dc2f6a5 in __assert_fail_base () from /lib/libc.so.6
>         #4  0x4dc2f757 in __assert_fail () from /lib/libc.so.6
>         #5  0x00221850 in brwInitFragProgFuncs (functions=0xbfffeb30) at
>         brw_program.c:261
>         #6  0x0020d3e8 in brwInitDriverFunctions (functions=0xbfffeb30,
>         screen=0x805fd38) at brw_context.c:117
>         #7  brwCreateContext (api=0, mesaVis=0x8063040,
>         driContextPriv=0x8066180, sharedContextPrivate=0x0) at
>         brw_context.c:148
>         #8  0x001fcde8 in intelCreateContext (api=API_OPENGL,
>         mesaVis=0x8063040, driContextPriv=0x8066180, major_version=1,
>         minor_version=0, flags=0, error=0xbfffee9c,
>              sharedContextPrivate=0x0) at intel_screen.c:557
>         #9  0x002915fb in dri2CreateContextAttribs (screen=0x805fc70,
>         api=0, config=0x8063040, shared=0x0, num_attribs=0, attribs=0x0,
>         error=0xbfffee9c, data=0x805a850)
>              at ../common/dri_util.c:236
>         #10 0x002917b7 in dri2CreateNewContextForAPI (screen=0x805fc70,
>         api=0, config=0x8063040, shared=0x0, data=0x805a850) at
>         ../common/dri_util.c:254
>         #11 0x002917ef in dri2CreateNewContext (screen=0x805fc70,
>         config=0x8063040, shared=0x0, data=0x805a850) at
>         ../common/dri_util.c:262
>         #12 0x00163244 in dri2_create_context (base=0x805a390,
>         config_base=0x8066cc0, shareList=0x0, renderType=32788) at
>         dri2_glx.c:213
>         #13 0x0012bb91 in CreateContext (dpy=0x804e008, generic_id=146,
>         config=0x8066cc0, shareList_user=0x0, allowDirect=1, code=3,
>         renderType=32788, screen=0)
>              at glxcmds.c:276
>         #14 0x0012c023 in glXCreateContext (dpy=0x804e008,
>         vis=0x805a6b8, shareList=0x0, allowDirect=1) at glxcmds.c:381
>         #15 0x08048fc3 in print_screen_info (limits=0 '\000',
>         allowDirect=1, scrnum=0, dpy=0x804e008) at glxinfo.c:430
>         #16 main (argc=1, argv=0xbffff254) at glxinfo.c:1255
>
>
>         I also verified that i'm using latest drm (66518ab). Is anyone
>         else seeing similar errors? or am i missing something?
>
>         Thanks
>         Anuj
>
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>         <mailto:mesa-dev at lists.freedesktop.org>
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>
>
>     That's a surprising failure, since that assertion would only be
>     expected to be hit if brwInitFragProgFuncs() got called more than
>     once on the same context.  That in turn should only happen if the
>     driver's CreateContext() function got called more than once on the
>     same context, and it's hard to see how dri2CreateContextAttribs()
>     would ever do that.
>
>     Note: I've heard that there have been some build problems recently;
>     have you tried building from scratch just to be sure?  I happen to
>     be reinstalling my OS today, so I've just done a clean build,
>     install, and piglit run on mesa commit dc435ae, and everything looks
>     fine.
>
>
>     If a clean build doesn't help for you, I'd recommend either
>     bisecting to try to see if a recent commit introduced the problem,
>     or else using gdb to see if brwInitFragProgFuncs() is getting called
>     multiple times, and if so, why.
>
> clean build didn't help. It shows assertion failure while executing
>   brwInitFragProgFuncs() for the first time.
> A fresh clone of mesa git repository works fine.
>
> Thanks
> Anuj

I think you might have to throw out your lib/ directory.  There's a bug 
where it can pick up an old libdricore.so, or the one from your system, 
which is pretty nasty.  I think Eric was looking into a fix...