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------------------------------------------------------------------------
On 2012-09-25T02:33:51+00:00 Daniel van Vugt wrote:

TEST CASE:
"Unredirect cancelation by transformed windows" from
http://bazaar.launchpad.net/~compiz-team/compiz/0.9.8/view/head:/tests/manual/Unredirect.txt

... frequently crashes my X server with:

(gdb) bt
#0 __memcpy_ssse3_back ()
    at ../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:1520
#1 0x00007fbd0d2424d6 in intel_uxa_pixmap_put_image (pixmap=<optimised out>,
    src=<optimised out>, src_pitch=7680, x=<optimised out>, y=<optimised out>,
    w=<optimised out>, h=1200)
    at /usr/include/x86_64-linux-gnu/bits/string3.h:52
#2 0x00007fbd0d244187 in intel_uxa_put_image (pixmap=0x7fbd119001c0, x=0,
    y=0, w=<optimised out>, h=1200, src=0x7fbd11b4c710 "p", src_pitch=7680)
    at ../../src/intel_uxa.c:809
#3 0x00007fbd0d26389d in uxa_copy_n_to_n (pSrcDrawable=0x7fbd11b4c6b0,
    pDstDrawable=0x7fbd11c82400, pGC=0x7fbd1169a9c0, pbox=0x7fff31b0b600,
    nbox=<optimised out>, dx=0, dy=0, reverse=0, upsidedown=0, bitplane=0,
    closure=0x0) at ../../uxa/uxa-accel.c:452
#4 0x00007fbd10fdb0da in miCopyRegion (pSrcDrawable=0x7fbd11b4c6b0,
    pDstDrawable=<optimised out>, pGC=0x7fbd1169a9c0,
    pDstRegion=<optimised out>, dx=0, dy=0,
    copyProc=0x7fbd0d263290 <uxa_copy_n_to_n>, bitPlane=0, closure=0x0)
    at ../../mi/micopy.c:137
#5 0x00007fbd10fdb5d2 in miDoCopy (pSrcDrawable=0x7fbd11b4c6b0,
    pDstDrawable=0x7fbd11c82400, pGC=0x7fbd1169a9c0, xIn=0, yIn=0,
    widthSrc=1920, heightSrc=1200, xOut=0, yOut=0,
    copyProc=0x7fbd0d263290 <uxa_copy_n_to_n>, bitPlane=0, closure=0x0)
    at ../../mi/micopy.c:334
#6 0x00007fbd0d26481e in uxa_copy_area (dsty=0, dstx=0, height=1200,
    width=<optimised out>, srcy=<optimised out>, srcx=<optimised out>,
    pGC=<optimised out>, pDstDrawable=<optimised out>,
    pSrcDrawable=<optimised out>) at ../../uxa/uxa-accel.c:498
#7 uxa_copy_area (pSrcDrawable=<optimised out>, pDstDrawable=<optimised out>,
    pGC=<optimised out>, srcx=<optimised out>, srcy=<optimised out>,
    width=<optimised out>, height=1200, dstx=0, dsty=0)
    at ../../uxa/uxa-accel.c:487
#8 0x00007fbd10f8d6ec in damageCopyArea (pSrc=0x7fbd11b4c6b0,
    pDst=0x7fbd11c82400, pGC=0x7fbd1169a9c0, srcx=<optimised out>, srcy=0,
    width=1920, height=1200, dstx=0, dsty=0)
    at ../../../miext/damage/damage.c:864
#9 0x00007fbd0d2559d5 in I830DRI2CopyRegion (drawable=0x7fbd11c82400,
    pRegion=0x7fff31b0b7e0, destBuffer=<optimised out>,
    sourceBuffer=<optimised out>) at ../../src/intel_dri.c:582
#10 0x00007fbd0d2574ce in I830DRI2FlipEventHandler (frame=27239,
    tv_sec=1348483279, tv_usec=575746, flip_info=0x7fbd11d1dae0)
    at ../../src/intel_dri.c:1048
#11 0x00007fbd0d68f583 in drmHandleEvent ()
   from /usr/lib/x86_64-linux-gnu/libdrm.so.2
#12 0x00007fbd10ec67eb in WakeupHandler (result=1, pReadmask=0x7fbd11282500)
    at ../../dix/dixutils.c:428
#13 0x00007fbd10ff9c46 in WaitForSomething (pClientsReady=0x7fbd11813950)
    at ../../os/WaitFor.c:235
#14 0x00007fbd10ec25f2 in Dispatch () at ../../dix/dispatch.c:366
#15 0x00007fbd10eb17ba in main (argc=8, argv=<optimised out>,
    envp=<optimised out>) at ../../dix/main.c:287

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.0-31-generic x86_64

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
intel/+bug/1055429/comments/2

------------------------------------------------------------------------
On 2012-09-25T08:09:03+00:00 Chris Wilson wrote:

Again, please retest using upstream components before filing an upstream
bug. And please remember to include your Xorg.log and dmesg.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
intel/+bug/1055429/comments/3

------------------------------------------------------------------------
On 2012-09-25T08:14:50+00:00 Daniel van Vugt wrote:

Thanks again.

Do you have a bug number or commit URL to point me to?

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
intel/+bug/1055429/comments/4

------------------------------------------------------------------------
On 2012-09-25T08:39:31+00:00 Chris Wilson wrote:

To be honest, I don't think it is a single bug but rather a catrasophe
of errors, which is why I want dmesg and Xorg.log to be sure there are
not other things going on. Since the traces are about 12 months old, I
first want to verify that it is not going to be a wild goose chase.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
intel/+bug/1055429/comments/6

------------------------------------------------------------------------
On 2012-09-26T08:03:40+00:00 Daniel van Vugt wrote:

I keep getting different Xorg crashes from Ubuntu 12.04 so can't get log
files for this yet.

On 12.10 with much newer intel drivers and similar hardware, I can't
crash it any more.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
intel/+bug/1055429/comments/9


** Changed in: xserver-xorg-video-intel
       Status: Unknown => Invalid

** Changed in: xserver-xorg-video-intel
   Importance: Unknown => Critical

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https://bugs.launchpad.net/bugs/1055429

Title:
  Xorg keeps crashing in memcpy <- intel_uxa_pixmap_put_image <-
  intel_uxa_put_image <- uxa_copy_n_to_n <- miCopyRegion

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