Bug 432266

Summary: rt2500pci throws ^@ to the console
Product: [Fedora] Fedora Reporter: Vaclav "sHINOBI" Misek <misek>
Component: kernelAssignee: John W. Linville <linville>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 8CC: cebbert, davej, ivdoorn
Target Milestone: ---   
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Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2008-03-12 21:33:00 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
lspci -v
none
lsmod none

Description Vaclav "sHINOBI" Misek 2008-02-10 18:41:27 UTC 
Description of problem:
When the wlan0 is started (doesn't matter if through NetworkManager or ifconfig
wlan0 up) it throws to the console ^@ characters approx. every second.

Version-Release number of selected component (if applicable):
kernel-2.6.23.14-115.fc8 (AFAIK all kernels in F 8)

How reproducible:
always

Steps to Reproduce:
1. start wlan0 interface
2.
3.
  
Actual results:


Expected results:
No characters to stdout as these blocks repeated key presses when key is held
down etc.

Additional info:
I upgraded to Alpha release and it behaves the same way.
Comment 1 Vaclav "sHINOBI" Misek 2008-02-10 18:42:11 UTC 
Created attachment 294502 [details]
lspci -v
Comment 2 Vaclav "sHINOBI" Misek 2008-02-10 18:43:05 UTC 
Created attachment 294503 [details]
lsmod
Comment 3 John W. Linville 2008-02-11 14:28:55 UTC 
Copying Ivo in case he has seen any similar wierdness...
Comment 4 Ivo van Doorn 2008-02-11 15:42:45 UTC 
Seems very much related to #43267, in fact it sounds more like that bug is a 
direct cause for the console bug.

But no I haven't seen this particular bug before (In opposite to #43267 which 
sounds all too familiar if this fedora kernel indeed contains rt2x00 2.1.0).
Comment 5 Vaclav "sHINOBI" Misek 2008-02-22 20:46:17 UTC 
Still persist in kernel 2.6.25-0.64.rc2.git5.fc9.
Comment 6 Ivo van Doorn 2008-02-25 22:40:15 UTC 
I have no real idea what can cause this, it sounds like memory corruption but
then you would also experience a crash.
It might have been caused by a kernel thread that hangs (fixed in rt2x00 2.1.3),
but I am not really convinced that could cause the above mentioned bug... :S
Comment 7 Vaclav "sHINOBI" Misek 2008-02-29 22:52:42 UTC 
Any idea how can I debug it or how to find more info?
Comment 8 John W. Linville 2008-03-04 19:09:02 UTC 
Vaclav, can you recreate the issue with the current rawhide kernels?  There 
have been a number of updates over the last month...
Comment 9 Vaclav "sHINOBI" Misek 2008-03-04 21:19:33 UTC 
Hi John, unfortunately the problem is still present in the latest rawhide kernel
2.6.25-0.87.rc3.git4.fc9
Comment 10 Vaclav "sHINOBI" Misek 2008-03-12 21:33:00 UTC 
The latest koji kernel (with included rt2x00 2.1.4) 2.6.25-0.113.rc5.git2.fc9
did the trick and there are no such characters send to console. Thanks a lot Ivo.