diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index ccaec2efe15ad65993b15f8c1ba7582c0a5a9a1d..15fc64d4e1555e995da33e71766f64f7b30f7a09 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1647,6 +1647,7 @@ static int __ref __offline_pages(unsigned long start_pfn,
 	unsigned long valid_start, valid_end;
 	struct zone *zone;
 	struct memory_notify arg;
+	char *reason;
 
 	mem_hotplug_begin();
 
@@ -1655,7 +1656,9 @@ static int __ref __offline_pages(unsigned long start_pfn,
 	if (!test_pages_in_a_zone(start_pfn, end_pfn, &valid_start,
 				  &valid_end)) {
 		mem_hotplug_done();
-		return -EINVAL;
+		ret = -EINVAL;
+		reason = "multizone range";
+		goto failed_removal;
 	}
 
 	zone = page_zone(pfn_to_page(valid_start));
@@ -1667,7 +1670,8 @@ static int __ref __offline_pages(unsigned long start_pfn,
 				       MIGRATE_MOVABLE, true);
 	if (ret) {
 		mem_hotplug_done();
-		return ret;
+		reason = "failure to isolate range";
+		goto failed_removal;
 	}
 
 	arg.start_pfn = start_pfn;
@@ -1676,15 +1680,19 @@ static int __ref __offline_pages(unsigned long start_pfn,
 
 	ret = memory_notify(MEM_GOING_OFFLINE, &arg);
 	ret = notifier_to_errno(ret);
-	if (ret)
-		goto failed_removal;
+	if (ret) {
+		reason = "notifier failure";
+		goto failed_removal_isolated;
+	}
 
 	pfn = start_pfn;
 repeat:
 	/* start memory hot removal */
 	ret = -EINTR;
-	if (signal_pending(current))
-		goto failed_removal;
+	if (signal_pending(current)) {
+		reason = "signal backoff";
+		goto failed_removal_isolated;
+	}
 
 	cond_resched();
 	lru_add_drain_all();
@@ -1701,8 +1709,10 @@ static int __ref __offline_pages(unsigned long start_pfn,
 	 * actually in order to make hugetlbfs's object counting consistent.
 	 */
 	ret = dissolve_free_huge_pages(start_pfn, end_pfn);
-	if (ret)
-		goto failed_removal;
+	if (ret) {
+		reason = "failure to dissolve huge pages";
+		goto failed_removal_isolated;
+	}
 	/* check again */
 	offlined_pages = check_pages_isolated(start_pfn, end_pfn);
 	if (offlined_pages < 0)
@@ -1742,13 +1752,15 @@ static int __ref __offline_pages(unsigned long start_pfn,
 	mem_hotplug_done();
 	return 0;
 
+failed_removal_isolated:
+	undo_isolate_page_range(start_pfn, end_pfn, MIGRATE_MOVABLE);
 failed_removal:
-	pr_debug("memory offlining [mem %#010llx-%#010llx] failed\n",
+	pr_debug("memory offlining [mem %#010llx-%#010llx] failed due to %s\n",
 		 (unsigned long long) start_pfn << PAGE_SHIFT,
-		 ((unsigned long long) end_pfn << PAGE_SHIFT) - 1);
+		 ((unsigned long long) end_pfn << PAGE_SHIFT) - 1,
+		 reason);
 	memory_notify(MEM_CANCEL_OFFLINE, &arg);
 	/* pushback to free area */
-	undo_isolate_page_range(start_pfn, end_pfn, MIGRATE_MOVABLE);
 	mem_hotplug_done();
 	return ret;
 }