Bug 1304428

Summary: kernel tainted by OOPS loading batman-adv
Product: [Fedora] Fedora Reporter: Stuart D Gathman <stuart>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: unspecified    
Version: 23CC: gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2016-02-26 03:57:37 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
initial oops that tains kernel
none
batman-adv oopses with kernel-4.3.4-300+debug none

Description Stuart D Gathman 2016-02-03 15:07:03 UTC 
Description of problem:
Loading batman-adv module gets oops 

Version-Release number of selected component (if applicable):
kernel-4.3.3-303.fc23.x86_64

How reproducible:
always

Steps to Reproduce:
1.modprobe batman-adv
2.
3.

Actual results:
kernel oops - but module still seems to work fine.  Kernel is tainted, which interferes with reporting other kernel bugs.

Expected results:
clean load

Additional info:
kernel-4.2.8 does not have the problem
Comment 1 Stuart D Gathman 2016-02-03 15:09:54 UTC 
Created attachment 1120808 [details]
initial oops that tains kernel

Sorry, this was on 4.3.3-301.  I'll check 4.3.4 soon.
Comment 2 Josh Boyer 2016-02-03 15:27:15 UTC 
I reported this upstream.
Comment 3 Stuart D Gathman 2016-02-03 15:43:48 UTC 
Created attachment 1120823 [details]
batman-adv oopses with kernel-4.3.4-300+debug
Comment 4 Stuart D Gathman 2016-02-03 18:38:25 UTC 
Fixed with kernel-4.3.5-300.bz1303270.fc23.x86_64
Comment 5 Josh Boyer 2016-02-04 07:28:20 UTC 
Hm.  I find that surprising.  So with the single patch added and batman-adv loading, the oops goes away?  If so, that's great news but I'm not sure why it would matter.
Comment 6 Stuart D Gathman 2016-02-04 19:33:56 UTC 
I haven't tested 4.3.5 without the USB wifi leak patch, so maybe something in 4.3.5 fixed it.  However, maybe the oops is related to the USB wifi leak?  As batman-adv was being used with the USB wifi.

I'll test with 4.3.5-300 (without leak patch) when I get a chance.
Comment 7 Stuart D Gathman 2016-02-26 03:57:37 UTC 
I'm on 4.4.2 now, and the oops is still gone.  I don't think I'm going to go back to 4.3.5.  Closing with "current release".