diff --git a/src/app/fdctl/run/tiles/fd_sign.c b/src/app/fdctl/run/tiles/fd_sign.c
index 12fdc5b603..c5fec7be89 100644
--- a/src/app/fdctl/run/tiles/fd_sign.c
+++ b/src/app/fdctl/run/tiles/fd_sign.c
@@ -171,6 +171,23 @@ privileged_init( fd_topo_t *      topo,
   ctx->private_key = identity_key;
   ctx->public_key  = identity_key + 32UL;
 
+    /* The stack can be taken over and reorganized by under AddressSanitizer, 
+     which causes this code to fail.  */
+#if FD_HAS_ASAN
+  FD_LOG_WARNING(( "!!! SECURITY WARNING !!! YOU ARE RUNNING THE SIGNING TILE "
+                   "WITH ADDRESS SANITIZER ENABLED. THIS CAN LEAK SENSITIVE " 
+                   "DATA INCLUDING YOUR PRIVATE KEYS INTO CORE DUMPS IF THIS "
+                   "PROCESS ABORTS. IT IS HIGHLY ADVISED TO NOT TO RUN IN THIS "
+                   "MODE IN PRODUCTION!" ));
+#else
+  /* Prevent the stack from showing up in core dumps just in case the
+     private key somehow ends up in there. */
+  FD_TEST( fd_tile_stack0() );
+  FD_TEST( fd_tile_stack_sz() );
+  if( FD_UNLIKELY( madvise( (void*)fd_tile_stack0(), fd_tile_stack_sz(), MADV_DONTDUMP ) ) )
+    FD_LOG_ERR(( "madvise failed (%i-%s)", errno, fd_io_strerror( errno ) ));
+#endif
+
   /* Prevent the stack from showing up in core dumps just in case the
      private key somehow ends up in there. */
   FD_TEST( fd_tile_stack0() );
diff --git a/src/disco/tvu/fd_replay.c b/src/disco/tvu/fd_replay.c
index 95507ba2e1..1e47329443 100644
--- a/src/disco/tvu/fd_replay.c
+++ b/src/disco/tvu/fd_replay.c
@@ -390,26 +390,26 @@ fd_replay_slot_execute( fd_replay_t *      replay,
   fork->head->bank_hash       = *bank_hash;
   FD_LOG_NOTICE( ( "bank hash: %32J", bank_hash->hash ) );
 
-  // fd_bank_hash_cmp_t * bank_hash_cmp = fd_exec_epoch_ctx_bank_hash_cmp( child->slot_ctx.epoch_ctx );
-  // fd_bank_hash_cmp_lock( bank_hash_cmp );
-  // fd_bank_hash_cmp_insert( bank_hash_cmp, slot, bank_hash, 1 );
-
-  // /* Try to move the bank hash comparison window forward */
-  // while (1) {
-  //   ulong *children, nchildren, parent_slot = bank_hash_cmp->slot;
-  //   if ( fd_blockstore_next_slot_query( replay->blockstore, parent_slot, &children, &nchildren ) == FD_BLOCKSTORE_OK ) {
-  //     for (ulong i = 0; i < nchildren; i++) {
-  //       if( FD_LIKELY( fd_bank_hash_cmp_check( bank_hash_cmp, children[i] ) ) ) {
-  //         bank_hash_cmp->slot = children[i];
-  //         break;
-  //       }
-  //     }
-  //   } else {
-  //     FD_LOG_WARNING( ("failed at getting children of slot %lu", parent_slot) );
-  //   }
-  //   if(bank_hash_cmp->slot == parent_slot) break;
-  // }
-  // fd_bank_hash_cmp_unlock( bank_hash_cmp );
+  fd_bank_hash_cmp_t * bank_hash_cmp = fd_exec_epoch_ctx_bank_hash_cmp( child->slot_ctx.epoch_ctx );
+  fd_bank_hash_cmp_lock( bank_hash_cmp );
+  fd_bank_hash_cmp_insert( bank_hash_cmp, slot, bank_hash, 1 );
+
+  /* Try to move the bank hash comparison window forward */
+  while (1) {
+    ulong *children, nchildren, parent_slot = bank_hash_cmp->slot;
+    if ( fd_blockstore_next_slot_query( replay->blockstore, parent_slot, &children, &nchildren ) == FD_BLOCKSTORE_OK ) {
+      for (ulong i = 0; i < nchildren; i++) {
+        if( FD_LIKELY( fd_bank_hash_cmp_check( bank_hash_cmp, children[i] ) ) ) {
+          bank_hash_cmp->slot = children[i];
+          break;
+        }
+      }
+    } else {
+      FD_LOG_WARNING( ("failed at getting children of slot %lu", parent_slot) );
+    }
+    if(bank_hash_cmp->slot == parent_slot) break;
+  }
+  fd_bank_hash_cmp_unlock( bank_hash_cmp );
 
   // fd_bft_fork_update( replay->bft, child );
   // fd_bft_fork_choice( replay->bft );