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-rw-r--r--fs/nfsd/nfs4callback.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 54f33b81d20f..a9e88df17f7a 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -1363,7 +1363,12 @@ static bool nfsd4_cb_sequence_done(struct rpc_task *task, struct nfsd4_callback
ret = true;
break;
case -ESERVERFAULT:
- ++session->se_cb_seq_nr[cb->cb_held_slot];
+ /*
+ * Call succeeded, but the session, slot index, or slot
+ * sequence number in the response do not match the same
+ * in the server's call. The sequence information is thus
+ * untrustworthy.
+ */
nfsd4_mark_cb_fault(cb->cb_clp);
break;
case 1: