Bug 187459 - i82860_edac status messages fill kernel ring buffer
Summary: i82860_edac status messages fill kernel ring buffer
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 4
Hardware: i686
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Dave Jones
QA Contact: Brian Brock
URL:
Whiteboard:
: 187710 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2006-03-31 02:51 UTC by Steve Snyder
Modified: 2015-01-04 22:26 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2006-05-29 03:40:20 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Steve Snyder 2006-03-31 02:51:10 UTC
Description of problem:

After only a few minutes runtime, the new i82860_edac driver has filled the 
kernel's ring buffer.  Running dmesg now shows nothing but a series of these 
messages:

  MC0: drivers/edac/i82860_edac.c: i82860_check()

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

kernel-smp-2.6.16-1.2069_FC4

How reproducible:

Always.

Steps to Reproduce:
1. Install kernel-smp-2.6.16-1.2069_FC4 into i860-based system
2. Reboot
3. Run dmesg a few minutes after rebooting
  
Actual results:

An unending series of status messages from the i82860_edac driver

Expected results:

Driver should report errors, not generate constant output

Additional info:

No entries in /var/log/messages suggest this constant output.

Comment 1 Michael Carney 2006-03-31 20:00:17 UTC
Turns out the problem is with the edac_mc module, not i82860_edac. edac_mc is 
compiled with edac_debug_level set to 1, not 0, which is why the messages are 
generated. 
 
The fix: .../drivers/edac/edac_mc.c: 
*** edac_mc.c   2006-03-19 21:53:29.000000000 -0800 
--- edac_mc.c.new       2006-03-31 12:01:06.000000000 -0800 
*************** 
*** 46,52 **** 
 
  #ifdef CONFIG_EDAC_DEBUG 
  /* Values of 0 to 4 will generate output */ 
! int edac_debug_level = 1; 
  EXPORT_SYMBOL(edac_debug_level); 
  #endif 
 
--- 46,52 ---- 
 
  #ifdef CONFIG_EDAC_DEBUG 
  /* Values of 0 to 4 will generate output */ 
! int edac_debug_level = 0; 
  EXPORT_SYMBOL(edac_debug_level); 
  #endif 
 
 
Workaround: 
 
Unload i82860_edac and edac_mc, reload edac_mc setting edac_debug_level to 0: 
rmmod i82860_edac 
rmmod edac_mc 
modprobe edac_mc edac_debug_level=0 
 
 

Comment 2 Dave Jones 2006-03-31 21:58:43 UTC
EDAC_DEBUG was supposed to be disabled. I turned it off in CVS yesterday.


Comment 3 David Timms 2006-04-03 11:48:37 UTC
? duplicate 187710

Comment 4 Jarod Wilson 2006-04-04 18:41:54 UTC
*** Bug 187710 has been marked as a duplicate of this bug. ***


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