Following the X-debug guide I obtained a debugging trace via gdb for
this crash:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f8c10bee6f0 (LWP 4508)]
I830DRI2CopyRegion (pDraw=0x50fd220, pRegion=<value optimized out>,
pDstBuffer=<value optimized out>, pSrcBuffer=<value optimized out>)
at ../../src/i830_dri.c:322
322 ../../src/i830_dri.c: No such file or directory.
in ../../src/i830_dri.c
(gdb) backtrace full
#0 I830DRI2CopyRegion (pDraw=0x50fd220, pRegion=<value optimized out>,
pDstBuffer=<value optimized out>, pSrcBuffer=<value optimized out>)
at ../../src/i830_dri.c:322
crtcbox = {x1 = 0, y1 = 0, x2 = 0, y2 = 0}
pipe = <value optimized out>
crtc = (xf86CrtcPtr) 0x0
event = <value optimized out>
load_scan_lines_pipe = <value optimized out>
srcPrivate = <value optimized out>
dstPrivate = <value optimized out>
pScreen = <value optimized out>
pScrn = (ScrnInfoPtr) 0x21992c0
pI830 = (I830Ptr) 0x219b3f0
pSrcPixmap = (PixmapPtr) 0x56ddeb0
pDstPixmap = (PixmapPtr) 0x50fd220
pCopyClip = <value optimized out>
pGC = (GCPtr) 0x4f41890
__func__ = "I830DRI2CopyRegion"
#1 0x00007f8c0d53411b in DRI2CopyRegion (pDraw=0x50fd220,
pRegion=0x7fff8d07ca30, dest=0, src=1)
at ../../../../hw/xfree86/dri2/dri2.c:186
ds = (DRI2ScreenPtr) 0x21c99d0
pPriv = <value optimized out>
pDestBuffer = (DRI2BufferPtr) 0x0
pSrcBuffer = (DRI2BufferPtr) 0x7fff8d07c9b0
i = <value optimized out>
#2 0x00007f8c0dd95fd1 in __glXDRIdrawableCopySubBuffer (
drawable=<value optimized out>, x=<value optimized out>,
y=<value optimized out>, w=<value optimized out>, h=35245040)
at ../../glx/glxdri2.c:129
region = {extents = {x1 = 0, y1 = 0, x2 = 1280, y2 = 1024}, data = 0x0}
#3 0x00007f8c0dd95ff4 in __glXDRIdrawableSwapBuffers (drawable=0x0)
at ../../glx/glxdri2.c:138
No locals.
#4 0x00007f8c0dd88ad6 in __glXDisp_SwapBuffers (cl=0x519d800,
pc=<value optimized out>) at ../../glx/glxcmds.c:1455
client = (ClientPtr) 0x51b5120
tag = 1
drawId = 95
glxc = (__GLXcontext *) 0x51ceef0
pGlxDraw = (__GLXdrawable *) 0x0
error = <value optimized out>
#5 0x00007f8c0dd8bdb9 in __glXDispatch (client=0x51b5120)
at ../../glx/glxext.c:541
stuff = (xGLXSingleReq *) 0x5db8b28
opcode = <value optimized out>
cl = (__GLXclientState *) 0x519d800
retval = <value optimized out>
#6 0x000000000044e044 in Dispatch () at ../../dix/dispatch.c:437
result = <value optimized out>
client = (ClientPtr) 0x51b5120
nready = 0
start_tick = 500
#7 0x0000000000433f15 in main (argc=<value optimized out>,
argv=0x7fff8d07ccc8, envp=<value optimized out>) at ../../dix/main.c:397
i = 1
alwaysCheckForInput = {0, 1}
--
x server dieing SIGSEGV
https://bugs.launchpad.net/bugs/383129
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