linux-kernel - Re: [PATCH 009 of 20] knfsd: nfsd: use ip-address-based domain in secinfo case

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Date:	Tue, 10 Jul 2007 12:06:53 -0400
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	NeilBrown <neilb@...e.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	nfs@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 009 of 20] knfsd: nfsd: use ip-address-based domain in
	secinfo case

Could you fold the below into this patch?  Without this the server can
oops on attempts to access a filesystem not exported to the request's
source address!  Thanks to Olga Kornievskaia for the testing that found
this.

--b.

diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 333e5cf..582b494 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -1261,7 +1261,7 @@ gss:
 						&rqstp->rq_chandle);
 	if (PTR_ERR(gssexp) == -ENOENT)
 		return exp;
-	if (exp)
+	if (exp && !IS_ERR(exp))
 		exp_put(exp);
 	return gssexp;
 }
@@ -1291,7 +1291,7 @@ gss:
 						&rqstp->rq_chandle);
 	if (PTR_ERR(gssexp) == -ENOENT)
 		return exp;
-	if (exp)
+	if (exp && !IS_ERR(exp))
 		exp_put(exp);
 	return gssexp;
 }
-
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