librbd: missing owner lock on snap rollback cache invalidation

Signed-off-by: Jason Dillaman <dillaman@redhat.com>

diff --git a/src/librbd/operation/SnapshotRollbackRequest.cc b/src/librbd/operation/SnapshotRollbackRequest.cc
index e1e472e25141dbd7131e711b845e157d2881e888..8bc5b3348db9743fac519d56f374c9da229315f0 100644 (file)
--- a/src/librbd/operation/SnapshotRollbackRequest.cc
+++ b/src/librbd/operation/SnapshotRollbackRequest.cc
@@ -279,6 +279,7 @@ Context *SnapshotRollbackRequest<I>::send_invalidate_cache() {
   CephContext *cct = image_ctx.cct;
   ldout(cct, 5) << this << " " << __func__ << dendl;
 
+  RWLock::RLocker owner_lock(image_ctx.owner_lock);
   Context *ctx = create_context_callback<
     SnapshotRollbackRequest<I>,
     &SnapshotRollbackRequest<I>::handle_invalidate_cache>(this);