Created attachment 389751 [details] Full kernel trace of WARNING and subsequent Ooops Description of problem: I keep seeing this message: WARNING: at lib/kref.c:43 kref_get+0x23/0x2d() (Not tainted) (I'll attach the full trace for better readability) in /var/log/messages. When it happens X freezes and I must reset the machine. It ususally happens when browsing flash-intensive internet sites, but not only in those cases. I suspected mesa-dri-drivers-experimental.x86_64 being responsible for it, but it keeps happening after I uninstalled the package. The problem never happens when using the machine remotely through ssh, but always when a user is logged-in and using the machine in a graphical session. Version-Release number of selected component (if applicable): kernel 2.6.31.12-174.2.3.fc12.x86_64 How reproducible: Always Steps to Reproduce: 1. start machine in runlevel 5 (default) 2. login using graphical login manager 3. start working Actual results: After some time (even a short time in some cases: 1 to 3 minutes after login) the X session freezes. After resetting the machine (sometimens Alt+SysRq+s-u-b works to reset the machine, sometimes no) the WARNING is found in /var/log/messages. Expected results: no freeze, no WARNING, no Ooops... Additional info: # lspci | grep VGA 01:05.0 VGA compatible controller: ATI Technologies Inc Radeon HD 3300 Graphics CPU: AMD Phenom(tm) II X4 955 Processor
Created attachment 397178 [details] Log from /var/log/messages containing the kernel Ooops messages
I observe similar issue on my machine (AMD Phenom II X4 945/4GB RAM). It also looks that other people experience this problem http://forums.fedoraforum.org/showthread.php?p=1335695. I have attached my log from /var/log/messages.
Similar on AMD Athlon X4 630 / HD3200. Now running kernel 2.6.32.8-58.fc12.x86_64 from testing for a few days without oops. Just 1 crash in X11, no oops.
I have installed the debug version of this kernel (2.6.31.12-174.2.22.fc12.x86_64.debug) and it seems that this problem does not appear on that build. I haven't seen the sympthoms for the last 4 days.
This issue is related with a WARN_ON(condition) function. If you comment out this warning function in kernel code, you'll be having no more problem.
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Fedora 12 changed to end-of-life (EOL) status on 2010-12-02. Fedora 12 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.