[patch] Proposed patch that fixes the issue

fix.patch (text/plain), 773 bytes, created by Ivan Vecera on 2015-02-16 16:35:21 UTC

diff --git a/module/zfs/dsl_scan.c b/module/zfs/dsl_scan.c
index ec1378a..f70577d 100644
--- a/module/zfs/dsl_scan.c
+++ b/module/zfs/dsl_scan.c
@@ -1499,10 +1499,11 @@ dsl_scan_sync(dsl_pool_t *dp, dmu_tx_t *tx)
 		}
 
 		if (bptree_is_empty(dp->dp_meta_objset, dp->dp_bptree_obj)) {
+			zfeature_info_t *feat = &spa_feature_table
+			    [SPA_FEATURE_ASYNC_DESTROY];
 			/* finished; deactivate async destroy feature */
-			spa_feature_decr(spa, SPA_FEATURE_ASYNC_DESTROY, tx);
-			ASSERT(!spa_feature_is_active(spa,
-			    &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY]));
+			spa_feature_decr(spa, feat, tx);
+			ASSERT(!spa_feature_is_active(spa, feat));
 			VERIFY0(zap_remove(dp->dp_meta_objset,
 			    DMU_POOL_DIRECTORY_OBJECT,
 			    DMU_POOL_BPTREE_OBJ, tx));