From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.5+) Gecko/20011018 Netscape6/6.5 Description of problem: I had upgraded by bios and cleared it with the jumper. I forgot to reset the clock and ntp didn't reset it because the difference was over 1000 seconds. When untaring a file I got alot of error message about future dates and figured out I had forgot to set the time. So I used ntpupdate servername and updated it. I have done small changes before to test ntpd, say by changing the clock by 10 minutes. When I currented the time it would start the screen saver, naturally. This time it crashed all of X and I got dropped back at the gdm login prompt. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. Set clock way back, ie. Jan 1 1970 1am 2. Start X 3. Set time to current time Actual Results: X crashs Expected Results: Programs to update, maybe the screensaver to come on if it is running, but not for X to crash Additional info:
This bug was just fixed I believe, and is in the current Rawhide version of X 4.2.0-6.45, and also in 4.1.0-23 which is soon to be released as erratum. It was fixed by Chris Blizzard and Keith Packard, and was due to a time wraparound bug in xdmcp.c