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nfsd4: session needs room for following op to error out 

commit 4c69d5855a upstream.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
J. Bruce Fields 2014-01-28 16:01:04 -05:00 committed by Greg Kroah-Hartman
parent 83b1912152
commit 6cd9ecd595
1 changed files with 6 additions and 0 deletions
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6
fs/nfsd/nfs4proc.c
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@ -1359,6 +1359,12 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
/* 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);
}