Bug 4728

Summary: Timer code in WaitFor.c needs better overflow handling
Product: xorg Reporter: Alan Coopersmith <alan.coopersmith>
Component: Server/GeneralAssignee: Xorg Project Team <xorg-team>
Status: RESOLVED MOVED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: git   
Hardware: All   
OS: All   
Whiteboard:
i915 platform: i915 features:

Description Alan Coopersmith 2005-10-09 16:52:37 UTC 
Bug #3254 noted that if you set values so large for the DPMS timers that they
overflow, the server goes into a tight loop constantly convinced the timers have
been hit every time through WaitForSomething, checking them all, and then waiting
for 0 milliseconds before doing it all again.

The immediate cause of that bug was fixed by simply preventing overflow when
reading the timeout values from the config file, but the timer code also needs
some long term thought to figure out if more work should be done to prevent 
overflows there. (Perhaps the timer values should be extended from 32-bit to 
64-bit on platforms that can efficiently handle 64-bit arithmetic?)
Comment 1 Daniel Stone 2007-02-27 01:28:26 UTC 
Sorry about the phenomenal bug spam, guys.  Adding xorg-team@ to the QA contact so bugs don't get lost in future.
Comment 2 chemtech 2013-03-15 14:41:48 UTC 
Alan Coopersmith 
Do you still experience this issue with newer soft ?
Please check the status of your issue.
Comment 3 GitLab Migration User 2018-12-13 22:15:45 UTC 
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/xorg/xserver/issues/334.

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