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    Subject[PATCH 3.10 39/86] nfsd4: session needs room for following op to error out
    Date
    3.10-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: "J. Bruce Fields" <bfields@redhat.com>

    commit 4c69d5855a16f7378648c5733632628fa10431db upstream.

    Signed-off-by: J. Bruce Fields <bfields@redhat.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    fs/nfsd/nfs4proc.c | 6 ++++++
    1 file changed, 6 insertions(+)

    --- a/fs/nfsd/nfs4proc.c
    +++ b/fs/nfsd/nfs4proc.c
    @@ -1307,6 +1307,12 @@ nfsd4_proc_compound(struct svc_rqst *rqs
    /* If op is non-idempotent */
    if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
    plen = opdesc->op_rsize_bop(rqstp, op);
    + /*
    + * If there's still another operation, make sure
    + * we'll have space to at least encode an error:
    + */
    + if (resp->opcnt < args->opcnt)
    + plen += COMPOUND_ERR_SLACK_SPACE;
    op->status = nfsd4_check_resp_size(resp, plen);
    }




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