linux-kernel - Re: [BUG] 2.6.23-rc5 kernel BUG at fs/nfs/nfs4xdr.c:945

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Message-ID: <20070907152913.GF24638@fieldses.org>
Date:	Fri, 7 Sep 2007 11:29:13 -0400
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, neilb@...e.de,
	nfs@...ts.sourceforge.net, Trond Myklebust <trond@...app.com>
Subject: Re: [BUG] 2.6.23-rc5 kernel BUG at fs/nfs/nfs4xdr.c:945

On Fri, Sep 07, 2007 at 03:32:32PM +0530, Kamalesh Babulal wrote:
> Sep  7 11:42:49 p55lp2 kernel: kernel BUG at fs/nfs/nfs4xdr.c:945!

That's the first line of encode_lookup:

	static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
	{
		int len = name->len;
		__be32 *p;

		RESERVE_SPACE(8 + len);

So len is either very large, or it's just garbage.  Do you know if
fsstress is trying to do something with a particularly long filename
here?

--b.
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