[Mesa-users] Assistance please: segfault at r300_state.c:1066

[Brian Paul]

On 03/11/2012 07:14 PM, Ronald F. Guilmette wrote:
>
>
> Greetings,
>
> I have been using a program called "gthumb" for some time now, and it
> has worked well for me.
>
> Recently, I upgraded some of my hardware.  Specifically, I bought a new
> monitor and a nice "X600" (Radeon) card to hang that off of.  Since then,
> gthumb crashes consistantly, shortly after startup.  (I'm on FreeBSD 8.2,
> by the way.)
>
> I made some modest efforts to try to find out what was going on, but frankly,
> this graphics stuff is pretty much all greek to me.  I did however rebuild
> and re-install both gthumb and dri with debugging info so that I could at
> least get a stack trace from the coredump file.
>
> So here is some (gdb) context for the SIGSEGV crash of gthumb:
>
> #0  0x0000000805453233 in r300UpdateWindow (ctx=0x80534a000)
>      at r300_state.c:1066
> 1066            GLfloat sx = v[MAT_SX];
> [New Thread 8052041c0 (LWP 100247)]
> (gdb) where
> #0  0x0000000805453233 in r300UpdateWindow (ctx=0x80534a000)
>      at r300_state.c:1066
> #1  0x0000000805456a83 in r300ResetHwState (r300=0x8052f8000)
>      at r300_state.c:2195
> #2  0x00000008054588ec in r300InitState (r300=0x8052f8000) at r300_state.c:2750
> #3  0x00000008054451fd in r300CreateContext (glVisual=0x805308700,
>      driContextPriv=0x80524d220, sharedContextPrivate=0x0) at r300_context.c:382
> #4  0x000000080543b5bf in radeonCreateContext (glVisual=0x805308700,
>      driContextPriv=0x80524d220, sharedContextPriv=0x0) at radeon_screen.c:1143
> #5  0x0000000805435793 in driCreateNewContext (psp=0x80524e480,
>      config=0x805308700, render_type=32788, shared=0x0, hwContext=3,
>      data=0x80524d1f0) at ../common/dri_util.c:587
> #6  0x0000000802f2d70f in driCreateContext () from /usr/local/lib/libGL.so.1
> #7  0x0000000802f08320 in CreateContext () from /usr/local/lib/libGL.so.1
> #8  0x0000000802f086dc in glXCreateNewContext () from /usr/local/lib/libGL.so.1
> #9  0x0000000800a61255 in cogl_pango_glyph_cache_new ()
>     from /usr/local/lib/libclutter-glx-1.0.so.0
> #10 0x00000008009ebfdb in clutter_feature_available ()
>     from /usr/local/lib/libclutter-glx-1.0.so.0
> #11 0x00000008009f6045 in clutter_get_option_group_without_init ()
>     from /usr/local/lib/libclutter-glx-1.0.so.0
> #12 0x00000008009f626f in clutter_init ()
>     from /usr/local/lib/libclutter-glx-1.0.so.0
> #13 0x00000000004c3b59 in main (argc=1, argv=0x7fffffffe300) at main.c:561
> (gdb) print v
> $1 = (const GLfloat *) 0x800000000
> (gdb) print *$1
> Cannot access memory at address 0x800000000
> (gdb)
>
>
> I did some grepping around and found that MAT_SX is #defined to the value 0.
> Thus, the gdb command "print v[0]" or equivalently "print *v" should give a
> clearer picture of what is causing the problem, and as you can see, indeed
> it does.  The process virtual space at 0x800000000 is apparently not mapped
> in.  Thus, the attempt to fetch the contents of v[MAT_SX] quite reasonably
> results in a SIGSEGV and a coredump.
>
> After getting this far, I read the page:
>
>     http://dri.freedesktop.org/wiki/DriTroubleshooting
>
> and checked everything I could that was listed there and all seems to be
> well.  The radeon.ko module does seem to be loaded into the kernel, and the
> folliowing line does exist in my /var/log/Xorg.0.log file:
>
> (II) RADEON(0): Direct rendering enabled
>
> Additionally, after doing "setenv LIBGL_DEBUG verbose" and re-running
> gthumb, most everything seems to be OK, however it is apparent that
> there are a couple of (optional?) DRI configuration files that simply
> are not present.  (Do I need to have one or both of these?)
>
> % gthumb .
> libGL: XF86DRIGetClientDriverName: 5.3.0 r300 (screen 0)
> libGL: OpenDriver: trying /usr/local/lib/dri/r300_dri.so
> drmOpenDevice: node name is /dev/dri/card0
> drmOpenDevice: open result is 6, (OK)
> drmOpenByBusid: Searching for BusID pci:0000:02:00.0
> drmOpenDevice: node name is /dev/dri/card0
> drmOpenDevice: open result is 6, (OK)
> drmOpenByBusid: drmOpenMinor returns 6
> drmOpenByBusid: drmGetBusid reports pci:0000:02:00.0
> libGL error:
> Can't open configuration file /etc/drirc: No such file or directory.
> libGL error:
> Can't open configuration file /usr/home/rfg/.drirc: No such file or directory.
> Segmentation fault (core dumped)
>
>
> So anyway, long story short, I could use some help here.  I'd kinda like
> to be able to run gthumb again, you know, without it crashing right off
> the bat.
>
> Suggestions?  Advice?  Stuff I should try?

I'm guessing this is Mesa 7.11.x or so?

I can't test r300 but if you file a bug report maybe someone else can 
take a look.

-Brian