Red Hat Bugzilla – Full Text Bug Listing
|Summary:||kadmind hangs reading from /dev/random|
|Product:||[Fedora] Fedora||Reporter:||Johannes Erdfelt <johannes>|
|Component:||krb5||Assignee:||Nalin Dahyabhai <nalin>|
|Status:||CLOSED INSUFFICIENT_DATA||QA Contact:||Brian Brock <bbrock>|
|Fixed In Version:||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2006-10-25 16:38:01 EDT||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
Description Johannes Erdfelt 2004-06-10 15:27:53 EDT
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040510 Description of problem: kadmind can hang reading from /dev/random. This happened recently when a yum update of krb5-server hung. After some troubleshooting, strace showed that kadmind is blocked waiting from /dev/random. The ultimate problem appears to be the lack of entropy being added to the kernel entropy pool. My system is a Dual Pentiun 3 system running on a Serverworks chipset with SCSI hard drives. The ethernet driver being used is e100. The Serverworks chipset I have does not appear to have a random number generator. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. Restart kadmind until process hangs at startup. Actual Results: kadmind hung waiting for a read from /dev/random to succeed. Expected Results: kadmind should startup quickly. Additional info: I've done some research and other packages have had similar problems. Such as bug #103049. The fix for bug #103049 was to use /dev/urandom instead of /dev/random. I haven't analyzed the impact to kadmind security with a change similar to that. The best solution would be to solve the lack of entropy in the kernel, but with no hardware random number generator, that appears to be difficult.
Comment 1 Matthew Miller 2006-07-11 13:19:49 EDT
Fedora Core 1 is maintained by the Fedora Legacy project for security updates only. If this problem is a security issue, please reopen and reassign to the Fedora Legacy product. If it is not a security issue and hasn't been resolved in the current FC5 updates or in the FC6 test release, reopen and change the version to match. Thanks! NOTE: Fedora Core 1 is reaching the final end of support even by the Legacy project. After Fedora Core 6 Test 2 is released (currently scheduled for July 26th), there will be no more security updates for FC1. Please use these next two weeks to upgrade any remaining FC1 systems to a current release.
Comment 2 John Thacker 2006-10-25 16:38:01 EDT
Closing per lack of response. Also note that FC1 and FC2 are no longer supported even by Fedora Legacy. If this still occurs on FC3 or FC4, please assign to that version and Fedora Legacy. If it still occurs on FC5 or FC6, please reopen and assign to the correct version.