http://bugs.freedesktop.org/show_bug.cgi?id=7205
------- Comment #28 from [EMAIL PROTECTED] 2007-03-13 09:51 PST -------
With pretty current git (63169ce52d354b4345dcfc46b89f0ea88379718f 2007-03-08
08:20:19), the Xserver (this time the whole suite compiled with -O0) segfaults
with the test case, at least on x86_64:
Program received signal SIGSEGV, Segmentation fault.
0x00002b015de121e9 in xmesa_delete_framebuffer (fb=0x1259310) at
xm_buffer.c:368
#0 0x00002b015de121e9 in xmesa_delete_framebuffer (fb=0x1259310) at
xm_buffer.c:368
#1 0x00002b015dbdeac6 in _mesa_unreference_framebuffer (fb=0xac0838) at
framebuffer.c:292
#2 0x00002b015dc03160 in _mesa_free_context_data (ctx=0xac0660) at
context.c:1416
#3 0x00002b015de1067c in XMesaDestroyContext (c=0xac0660) at xm_api.c:1586
#4 0x00002b015de00247 in __glXMesaContextDestroy (baseContext=0xab2460) at
xf86glx.c:187
#5 0x00002b015b857eac in __glXFreeContext (cx=0xab2460) at glxext.c:242
#6 0x00002b015b857c21 in ContextGone (cx=0xab2460, id=2097156) at glxext.c:121
#7 0x000000000043547e in FreeResourceByType (id=2097156, type=33, skipFree=0)
at resource.c:622
#8 0x00002b015b84f04d in __glXDisp_DestroyContext (cl=0xab1790, pc=0xaaf500
"\217\004\002") at glxcmds.c:288
#9 0x00002b015b858590 in __glXDispatch (client=0xaaf100) at glxext.c:551
#10 0x0000000000564941 in XaceCatchExtProc (client=0xaaf100) at xace.c:299
#11 0x000000000044bd41 in Dispatch () at dispatch.c:503
#12 0x0000000000432949 in main (argc=1, argv=0x7fff5145ce08,
envp=0x7fff5145ce18) at main.c:467
frame #0: xm_buffer.c:368
363 XMesaBuffer b = XMESA_BUFFER(fb);
364
365 #ifdef XFree86Server
366 int client = 0;
367 if (b->frontxrb->drawable)
368 client = CLIENT_ID(b->frontxrb->drawable->id);
369 #endif
370
371 if (b->num_alloced > 0) {
372 /* If no other buffer uses this X colormap then free the colors.
*/
frame #1: framebuffer.c:292
287 (*fb)->RefCount--;
288 deleteFlag = ((*fb)->RefCount == 0);
289 _glthread_UNLOCK_MUTEX((*fb)->Mutex);
290
291 if (deleteFlag)
292 (*fb)->Delete(*fb);
293
294 *fb = NULL;
295 }
296 }
(gdb) print b->frontxrb->drawable
$2 = (XMesaDrawable) 0x2b015e136010
(gdb) print b->frontxrb->drawable->id
Cannot access memory at address 0x2b015e136018
(gdb) print b->frontxrb
$10 = (struct xmesa_renderbuffer *) 0xfd1620
(gdb) print *b->frontxrb
$11 = {Base = {Mutex = 0, ClassID = 0, Name = 0, RefCount = 2, Width = 4096,
Height = 4096, InternalFormat = 6408,
_ActualFormat = 0, _BaseFormat = 6408, DataType = 5121, RedBits = 5 '\005',
GreenBits = 6 '\006',
BlueBits = 5 '\005', AlphaBits = 8 '\b', IndexBits = 0 '\0', DepthBits = 0
'\0', StencilBits = 0 '\0', Data = 0x0,
Wrapped = 0xfd1620, Delete = 0x2b015de11e11 <xmesa_delete_renderbuffer>,
AllocStorage = 0x2b015de11e28 <xmesa_alloc_front_storage>, GetPointer =
0x2b015dc397e5 <nop_get_pointer>,
GetRow = 0x2b015ddae8ec <get_row_rgba>, GetValues = 0x2b015ddb0346
<get_values_rgba>,
PutRow = 0x2b015dd97d13 <put_row_DITHER_5R6G5B_pixmap>,
PutRowRGB = 0x2b015dd983c5 <put_row_rgb_DITHER_5R6G5B_pixmap>,
PutMonoRow = 0x2b015dda9b29 <put_mono_row_TRUEDITHER_pixmap>,
PutValues = 0x2b015dda63b4 <put_values_DITHER_5R6G5B_pixmap>,
PutMonoValues = 0x2b015ddabc56 <put_mono_values_TRUEDITHER_pixmap>}, Parent
= 0x1259310,
drawable = 0x2b015e136010, pixmap = 0x2b015e136010, ximage = 0x0, origin1 =
0x0, width1 = 0, origin2 = 0x0,
width2 = 0, origin3 = 0x0, width3 = 0, origin4 = 0x0, width4 = 0, bottom =
4095,
clearFunc = 0x2b015de00eeb <clear_pixmap>}
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