Bug 151403

Summary: hw_random is loaded even when RNG not present on IBM T41
Product: [Fedora] Fedora Reporter: David Lehman <dlehman>
Component: kernelAssignee: Dustin Kirkland <kirkland>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 3CC: sundaram, tao, wtogami
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: 2.6.12-1.1372 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-09-05 08:10:26 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 130350    

Description David Lehman 2005-03-17 17:23:53 UTC 
Description of problem:
This is on an IBM Thinkpad T41. The hw_random driver is associated with the
following device:

  00:1e.0 PCI bridge: Intel Corp. 82801 Mobile PCI Bridge (rev 81)
  or
  00:1e.0 Class 0604: 8086:2448 (rev 81)
The driver loads and initializes successfully but there doesn't appear to be an
RNG capability there. I say this because if I try to start rngd it hangs on it's
first attempt to read from /dev/hw_random.


Version-Release number of selected component (if applicable):
kernel-2.6.10-1.770_FC3

How reproducible:
Always (on T41, that is)

Steps to Reproduce:
1. modprobe -r hw_random
2. modprobe hw_random
3. rngd
  
Actual results:
rngd hangs waiting for read on /dev/hw_random

Expected results:
rngd daemonizes and runs happily

Additional info:
This will also need fixing in RHEL4 as it's blocking 130350. I have only
reproduced this on FC3 although I'm fairly certain it's resent in RHEL4 as well.

Any further details will be happily provided upon request.
Comment 3 Dave Jones 2005-07-15 18:45:57 UTC 
An update has been released for Fedora Core 3 (kernel-2.6.12-1.1372_FC3) which
may contain a fix for your problem.   Please update to this new kernel, and
report whether or not it fixes your problem.

If you have updated to Fedora Core 4 since this bug was opened, and the problem
still occurs with the latest updates for that release, please change the version
field of this bug to 'fc4'.

Thank you.
Comment 4 David Lehman 2005-08-04 00:29:58 UTC 
kernel-2.6.12-1.1372_FC3 fixes the problem. Closing...
Comment 5 David Lehman 2005-08-04 00:31:19 UTC 
Okay, I didn't close it. MODIFIED seemed more appropriate.