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List:       netbsd-bugs
Subject:    kern/28803: LKM loads twice and loading blocks the system for a while
From:       kessi () teles ! de
Date:       2004-12-29 12:06:00
Message-ID: 20041229120600.58E3663B845 () narn ! netbsd ! org
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> Number:         28803
> Category:       kern
> Synopsis:       LKM loads twice and loading blocks the system for a while
> Confidential:   no
> Severity:       serious
> Priority:       medium
> Responsible:    kern-bug-people
> State:          open
> Class:          sw-bug
> Submitter-Id:   net
> Arrival-Date:   Wed Dec 29 12:06:00 +0000 2004
> Originator:     Jens Kessmeier
> Release:        2.0
> Organization:
TELES AG
> Environment:
NetBSD iswitch2.treles.de: 2.0 NetBSD 2.0 (ISWITCH) #4: Thu Dec 23 18:18:18 2004 \
admin@COMPILE:/usr2/isdn/NetBSD-2.0/usr/src/sys/arch/i386/compile/ISWITCH i386
> Description:
First time loading off a LKM with modload -sA ./tlstrc.lnk ./tlstrc.o
works fine. On the second time i see a lot of kernel messages like
"/lkmtemp/: symbol 'xxxx' redeclared with different value (hexval != hexval)" and \
modload fails with error initializing module: File exists. On the third modload \
succeeds! If you repeat it, modstat output looks like:

MISC  0   - xxxxxxxx xxxx xxxxxxxx 2 streams
MISC  1   - xxxxxxxx xxxx xxxxxxxx 2 tlstrc
MISC  2   - xxxxxxxx xxxx xxxxxxxx 2 tlspir
MISC  3   - xxxxxxxx xxxx xxxxxxxx 2 tlssw1
MISC  4   - xxxxxxxx xxxx xxxxxxxx 2 tlsmtn
MISC  5   - xxxxxxxx xxxx xxxxxxxx 2 tlsmtn
MISC  6   - xxxxxxxx xxxx xxxxxxxx 2 tlsmtn
MISC  7   - xxxxxxxx xxxx xxxxxxxx 2 tlsmtn

Doing the same thing without modload option -s, modload fails every time
with: error initializing module: File exits.

Another unexpected thing off modload -s option is slow loading and blocking the \
system for a while. A behaviour i miss in 1.6.2.  
> How-To-Repeat:
See full description.
> Fix:


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