From: "J. Bruce Fields" <bfields@fieldses.org>
Subject: Re: [BUG] All Kerberos mounts stop working,
	restarting rpc.svcgssd helps
Date: Fri, 10 Nov 2006 15:25:21 -0500
Message-ID: <20061110202521.GE9453@fieldses.org>
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Cc: "Steinar H. Gunderson" <sgunderson@bigfoot.com>,
	nfs@lists.sourceforge.net
To: Kevin Coffman <kwc@citi.umich.edu>
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On Fri, Nov 10, 2006 at 03:11:31PM -0500, Kevin Coffman wrote:
> I didn't find any clues in the strace output either.  I'm not sure
> where to look next.

Well, if we're seeing a NO_CONTEXT error on the wire, and if (as is
apparent from the strace), svcgssd isn't itself sending a NO_CONTEXT
error down, then you must be correct that it's coming from
gss_write_init_verf().

So gss_svc_searchbyctx() is returning NULL.

I wonder if the kmalloc() in dup_to_netobj() is failing?  If it was
caused by a memory leak of some kind, that would explain why it takes a
while for the problem to show up, but not why restarting rpc.svcgssd
would help.

But the only other possibilities are that rsc_lookup() or cache_check()
are failing, and I don't see how that can happen when the previous
context downcall succeeded (as I believe the strace showed it did),
unless there's a bug in the cache code.

--b.

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