Bug 22408

Can confirm the crash introduced in Mesa 7.4.3, downgrading to 7.4.2 fixes the problem.

OK, fixed in Mesa with commit 1dbbc39f48ce5f9aa63ab42930b14e48938b326f

Looks like a Mesa 7.4.4 release will be needed...

*** Bug 22377 has been marked as a duplicate of this bug. ***

*** Bug 22374 has been marked as a duplicate of this bug. ***

(In reply to comment #2)
> OK, fixed in Mesa with commit 1dbbc39f48ce5f9aa63ab42930b14e48938b326f
> 
> Looks like a Mesa 7.4.4 release will be needed...
> 

OK I attempted to patch the ebuild with that commit and got a crash later on:

0x00007f8fea7bb165 in raise () from /lib/libc.so.6
#0  0x00007f8fea7bb165 in raise () from /lib/libc.so.6
#1  0x00007f8fea7bc4de in abort () from /lib/libc.so.6
#2  0x00007f8fea7b449f in __assert_fail () from /lib/libc.so.6
#3  0x00007f8fd89fb999 in _mesa_reference_framebuffer (ptr=0x12b1338, fb=0x0) at main/framebuffer.c:230
#4  0x00007f8fd8975e53 in driDestroyDrawable (pdp=0x12b1330) at ../common/dri_util.c:503
#5  0x00007f8fe9b29cd6 in ?? () from /usr/lib64/xorg/modules/extensions//libglx.so
#6  0x00007f8fe9b1f40d in ?? () from /usr/lib64/xorg/modules/extensions//libglx.so
#7  0x0000000000434064 in FreeResource (id=20971578, skipDeleteFuncType=0) at resource.c:561
#8  0x00007f8fe9b1cd5c in ?? () from /usr/lib64/xorg/modules/extensions//libglx.so
#9  0x00007f8fe9b1fb72 in ?? () from /usr/lib64/xorg/modules/extensions//libglx.so
#10 0x000000000044b914 in Dispatch () at dispatch.c:437
#11 0x000000000043180d in main (argc=9, argv=0x7fff8ba34bb8, envp=<value optimized out>) at main.c:397
#3  0x00007f8fd89fb999 in _mesa_reference_framebuffer (ptr=0x12b1338, fb=0x0) at main/framebuffer.c:230
230     main/framebuffer.c: No such file or directory.
        in main/framebuffer.c
Source directories searched: /var/tmp/portage/media-libs/mesa-7.4.3/work/Mesa-7.4.3/src/mesa/main:$cdir:$cwd
#3  0x00007f8fd89fb999 in _mesa_reference_framebuffer (ptr=0x12b1338, fb=0x0) at main/framebuffer.c:230
230        assert(fb);
$1 = (struct gl_framebuffer *) 0x0
#4  0x00007f8fd8975e53 in driDestroyDrawable (pdp=0x12b1330) at ../common/dri_util.c:503
503             (*psp->DriverAPI.DestroyBuffer)(pdp);
No symbol "psp" in current context.
No locals.
$2 = (__DRIdrawable *) 0x12b1330
$3 = {hHWDrawable = 0, driverPrivate = 0x0, loaderPrivate = 0x12b1470, refcount = 0, index = 0, pStamp = 0x0, lastStamp = 0, x = 0, y = 0, w = 0, h = 0, 
  numClipRects = 0, pClipRects = 0x12afbf0, backX = 0, backY = 0, backClipRectType = 0, numBackClipRects = 0, pBackClipRects = 0x12a0360, vblSeq = 0, 
  vblFlags = 0, vblank_base = 0, msc_base = 0, driContextPriv = 0xb3bfe8, driScreenPriv = 0xb3bef0, swap_interval = 4294967295}

I've re-oppened the bug as my problem still isn't solved although the
crash has progressed onwards. If you think it's really a different bug
I can raise a new bug for this crash or wait for the 7.4.4 release so
I can test properly.

Any idea when a 7.4.4 build will be released?

That assertion was also fixed.  Commit 4b8cd0b0ad48c3b0129451924f7461ffcbbc8597

I'll try to release 7.4.4 today.