This bug was fixed in the package xserver-xorg-video-intel -
2:2.21.14-4ubuntu2
---
xserver-xorg-video-intel (2:2.21.14-4ubuntu2) saucy; urgency=low
* Re-add changes to xmir.
-- Maarten Lankhorst maarten.lankho...@ubuntu.com Thu, 15 Aug 2013
10:36:22 +0200
** Changed in:
era o apache que esta ruim, reinstalei o ubuntu e ficou legal.
2013/8/5 Chris Wilson ch...@chris-wilson.co.uk
glitch? Behaves the same for sna/uxa/fb, so I presume the bug is in the
rendering commands i.e. higher up the stack.
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Created attachment 83666
File name glitch
If i have a file or folder, and its name is more than 1 line, if i
select part of the name in 2 or more lines, then the rest of the text in
lines with selected text is not black, but white.
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glitch? Behaves the same for sna/uxa/fb, so I presume the bug is in the
rendering commands i.e. higher up the stack.
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** Summary changed:
- Xorg crashed with SIGABRT in has_offload_slaves()
+ (needs 2.21.14) Xorg crashed with SIGABRT in has_offload_slaves()
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Created attachment 83493
gdb output
Work is keeping my too busy, so it took some time. Anyway, finally did
manage to get the gdb output at least.
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I think I understand it:
commit 5287660aafe45859c07874c22dca99c1ff5e555a
Author: Chris Wilson ch...@chris-wilson.co.uk
Date: Fri Aug 2 13:18:12 2013 +0100
sna: Reserve relocation entries for the deferred VBO
Whilst we reserved exec entry slots for the deferred VBO, there were no
You're quicker than I had time to recompile with debug. As far as i can
tell, this has fixed the issue. Should it change, i will let you know.
Thanks!
d.
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Ok, this is starting to make sense. Buffer overflow in the relocation
array. If you run with --enable-debug this should trigger an assertion.
So if you could recompile and run under gdb, that would be invaluable.
Meanwhile I'll look for paths where I've made an incorrect check.
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** Changed in: xserver-xorg-video-intel
Status: Confirmed = Fix Released
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https://bugs.launchpad.net/bugs/1203273
Title:
(needs 2.21.14) Xorg
@Doug, can you tell me what hardware you have? Specifically the graphics
card (or CPU)?
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https://bugs.launchpad.net/bugs/1203273
Title:
Xorg crashed
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Incomplete = Fix Committed
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https://bugs.launchpad.net/bugs/1203273
Title:
Xorg crashed
just compiled 2.21.13 as it is supposed to fix some mem corruption, but
it still crashes...
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https://bugs.launchpad.net/bugs/1203273
Title:
Xorg
Note that sna-scrn being NULL there is an indication of memory
corruption, as X cannot start unless it sets that. An alternate
possibility it that the BlockHandler is running after we shutdown...
Again, I think impossible.
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I did recompile with full debug but unfortunately, I do not manage to
crash it with the same procedure. Everything is a lot slower however, so
maybe timing is important.
I suspected memory corruption as well as triggering the crash seems to
rely there being consideral memory load on the system.
Can you try CFLAGS=-O0 -g3 ./configure blah?
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https://bugs.launchpad.net/bugs/1203273
Title:
Xorg crashed with SIGABRT in has_offload_slaves()
Status
with O0 -g3 it was not so easy to trigger, but:
Program received signal SIGSEGV, Segmentation fault.
0x7f1472b8b88c in has_offload_slaves (sna=0x7f1471868000)
at sna_accel.c:14747
14747 ScreenPtr screen = sna-scrn-pScreen;
(gdb) bt full
#0 0x7f1472b8b88c in has_offload_slaves
To use valgrind, do ./configure --enable-debug, then I find it easier to
launch X by hand, so something like:
$ sudo valgrind --trace-children /usr/bin/Xorg -ac -noreset 21 | tee
/tmp/xorg.txt
switch back to a second VT, or login in remotely, then
$ DISPLAY=:0 gnome-session
switch back to X
Next time you see a crash, please p *sna and p *sna-scrn
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https://bugs.launchpad.net/bugs/1203273
Title:
Xorg crashed with SIGABRT in
** Information type changed from Private to Public
** Also affects: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided
Status: New
** No longer affects: xorg-server (Ubuntu)
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There is no clear reason why that would explode; looks more or less like
a corrupt screen-dirty_pixmap_list. An alternative explanation would be
that ScrnInfo-pScreen is NULL - would be extremely reproducible, and
equally impossible. So memory corruption?
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Note in the duplicate bug #1203593 the stacktrace from apport doesn't
match the crash; from the Xorg.0.log the crash would be in
sna_accel_flush_callback().
Can you please make sure you run apt-get install xdiagnose and attach
all logs if this reoccurs.
** Changed in: xserver-xorg-video-intel
** Bug watch added: freedesktop.org Bugzilla #67504
https://bugs.freedesktop.org/show_bug.cgi?id=67504
** Also affects: xserver-xorg-video-intel via
https://bugs.freedesktop.org/show_bug.cgi?id=67504
Importance: Unknown
Status: Unknown
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