debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/fs/nfsd/blocklayoutxdr.c
..
..
@@ -82,6 +82,15 @@
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 	int len = sizeof(__be32), ret, i;
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 	__be32 *p;
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+	/*
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+	 * See paragraph 5 of RFC 8881 S18.40.3.
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+	 */
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+	if (!gdp->gd_maxcount) {
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+		if (xdr_stream_encode_u32(xdr, 0) != XDR_UNIT)
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+			return nfserr_resource;
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+		return nfs_ok;
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+	}
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+
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 	p = xdr_reserve_space(xdr, len + sizeof(__be32));
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 	if (!p)
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 		return nfserr_resource;