nfsd4: nfsd4_check_resp_size should check against whole buffer
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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@ -3762,7 +3762,6 @@ __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize)
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{
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struct xdr_buf *buf = &resp->rqstp->rq_res;
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struct nfsd4_session *session = resp->cstate.session;
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int slack_bytes = (char *)resp->xdr.end - (char *)resp->xdr.p;
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if (nfsd4_has_session(&resp->cstate)) {
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struct nfsd4_slot *slot = resp->cstate.slot;
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@ -3775,7 +3774,7 @@ __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize)
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return nfserr_rep_too_big_to_cache;
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}
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if (respsize > slack_bytes) {
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if (buf->len + respsize > buf->buflen) {
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WARN_ON_ONCE(nfsd4_has_session(&resp->cstate));
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return nfserr_resource;
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}
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