nfsd4: initialize cb_per_client

Otherwise a callback that is aborted before it runs will result in a
list_del on an uninitialized list head.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index f1d9dd45553a..209e186386a0 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -866,6 +866,7 @@ void nfsd4_cb_recall(struct nfs4_delegation *dp)
         cb->cb_ops = &nfsd4_cb_recall_ops;
         dp->dl_retries = 1;
 
+        INIT_LIST_HEAD(&cb->cb_per_client);
         cb->cb_done = true;
 
         run_nfsd4_cb(&dp->dl_recall);