Bug 163658

Summary: kernel oopses under load in __find_get_block_slow
Product: [Fedora] Fedora Reporter: speedy <speedy>
Component: kernelAssignee: Dave Jones <davej>
Status: CLOSED UPSTREAM QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 4CC: pfrields, wtogami
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-07-30 06:28:49 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:
Attachments:
Description Flags
oops traces from "/var/log/messages" and dmesg output none

Description speedy 2005-07-19 23:02:09 UTC 
Description of problem:

   Server machine oopses & freezes from time to time under load - easily
reproducible with disabled unmaskirq and 32bit transfer for HDDs accessed by
samba, but then does not print Oops. When unmaskirq and 32bit transfer are
enabled kernel produces oops before freezing up.

Version-Release number of selected component (if applicable):

   2.6.12-1.1387_FC4

How reproducible:

   Access to samba over the gigabit LAN with 10 computers in a rendering farm.

Steps to Reproduce:
1. Setup samba
2. Trigger heavy load on it
3. Wait for the crash
  
Actual results:

   Machine freezing up under heavy loads.

Expected results:

   Stable under heavy loads.

Additional info:

   Attached are oops traces from /var/log/messages, and dmesg logged to a file.
Please let me know if you think oopses are HW related so that we could start
switching HW parts in the box one by one.
Comment 1 speedy 2005-07-19 23:02:09 UTC 
Created attachment 116953 [details]
oops traces from "/var/log/messages" and dmesg output
Comment 2 Dave Jones 2005-07-30 06:28:49 UTC 
Can you try and reproduce this problem with the latest updates please ?

If it still reoccurs, I recommend filing a bug in http://bugme.osdl.org (the
upstream kernel bugzilla), as reiserfs is unsupported by Fedora.