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-rw-r--r--fs/ceph/mds_client.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 1095802ad9bd..4a26862d7667 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -3358,8 +3358,10 @@ static void handle_session(struct ceph_mds_session *session,
goto bad;
/* version >= 3, feature bits */
ceph_decode_32_safe(&p, end, len, bad);
- ceph_decode_64_safe(&p, end, features, bad);
- p += len - sizeof(features);
+ if (len) {
+ ceph_decode_64_safe(&p, end, features, bad);
+ p += len - sizeof(features);
+ }
}
mutex_lock(&mdsc->mutex);