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Old 06-03-09, 05:04 AM   #1
dae
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Join Date: Jul 2004
Location: Sweden
Posts: 40
Default 180.60: glibc double free in libGL at logout from KDE 4.2.3

When logging out from KDE (4.2.3), I get:

QPainter::begin: Cannot paint on a null pixmap
QPainter::setCompositionMode: Painter not active
kwin(3577) KWin::x11ErrorHandler: kwin: X Error ( "error: BadDamage [DAMAGE+0], request: XDamageDestroy[DAMAGE+2], resource: 0x10001f5" )
kwin(3577) KWin::x11ErrorHandler: kwin: X Error ( "error: BadDamage [DAMAGE+0], request: XDamageDestroy[DAMAGE+2], resource: 0x10001f9" )
kwin(3577) KWin::x11ErrorHandler: kwin: X Error ( "error: BadDamage [DAMAGE+0], request: XDamageDestroy[DAMAGE+2], resource: 0x10001f8" )
*** glibc detected *** kwin: double free or corruption (!prev): 0x0000000001c84840 ***
======= Backtrace: =========
/lib64/libc.so.6[0x7fad78e17175]
/lib64/libc.so.6(cfree+0x10c)[0x7fad78e1be4c]
/usr/lib64/libGL.so.1[0x7fad7944bec8]

This has been happening for some time now, and I'm not sure in exactly which driver version it started. It's almost 100% reproducable, although sometimes kwin simply crashes, without the double free. I see it happening on both my nvidia systems.

Someone else posted something that looks very similar to the KDE bug tracker, and the KDE devs pointed at nvidia: https://bugs.kde.org/show_bug.cgi?id=187769

Just like the bug reporting howto said, I generated the bug report after the problem occured, which is after X is killed, meaning some information in the bug report is missing. Let me know if you want me to regenerate it with X running.

I'll also attach the complete output from X/KDE when it crashes.

Linux: 2.6.29.4
QT: 4.5.1
KDE: 4.2.3
Attached Files
File Type: gz nvidia-bug-report.log.gz (29.4 KB, 58 views)
File Type: log X-session.log (38.2 KB, 66 views)
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Old 06-03-09, 08:04 AM   #2
dae
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Join Date: Jul 2004
Location: Sweden
Posts: 40
Default Re: 180.60: glibc double free in libGL at logout from KDE 4.2.3

Note that the title is slightly misleading - the driver version in the logs is 185.18.10. On my other system, where I see exactly the same crash, I'm running 180.60.
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