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Date:      Thu, 6 Nov 1997 23:59:55 -0500 (EST)
From:      "John S. Dyson" <toor@dyson.iquest.net>
To:        scottm@cs.ucla.edu (Scott Michel)
Cc:        freebsd-current@FreeBSD.ORG
Subject:   Re: Latest kernel: panics with NFS LKM
Message-ID:  <199711070459.XAA00517@dyson.iquest.net>
In-Reply-To: <199711070354.TAA07772@mordred.cs.ucla.edu> from Scott Michel at "Nov 6, 97 07:54:14 pm"

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Scott Michel said:
> Given the latest kernel snapshot (from a cvsup this afternoon),
> the NFS LKM causes the kernel to panic - trap 12, page fault in
> kernel.
> 
> Yes, I remembered to config the kernel before I rebuilt it. Configuring
> the kernel with NFS compiled in makes the panic go away. I doing a
> build world to see if there's some leftover spooge from some of the
> kernel source changes today.
> 
Remember to rebuild all of the LKM's.  We should probably come up with
a published list of things (worst case) that need to be rebuit when
upgrading a kernel.  People can usually get by with simply
recompiling/relinking the kernel, and are suprised when that doesn't work
correctly.  I am usually prepared to (not necessarily in this order):

compile, relink and install libkvm.
compile, relink and install ps, w, and other utilities dependent on libkvm.
compile, relink and install config.
compile, relink and install the /usr/src/lkm's.

When doing lots of kernel development, I don't use any LKM's so that I don't
run into troubles because of those.  Even dealing with the items above, there is
still the (not-so-often) possibility of other trouble when upgrading a
kernel (esp. a -current kernel.)

-- 
John
dyson@freebsd.org
jdyson@nc.com



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