From c833565be79f2ef2541459f2d8444894abd9d939 Mon Sep 17 00:00:00 2001
From: Chunsheng Luo <luochunsheng@huawei.com>
Date: Wed, 8 Sep 2021 18:10:53 +0800
Subject: [PATCH] shm.c: fix verify_shm memcmp nodes

When nodemask_sz is large 64 (CONFIG_NODES_SHIFT > 6), verify_shm
will output wrong result "mismatched node mask". that's not what we
expected, we expected compare nodes->maskp.
---
 shm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/shm.c b/shm.c
index 324cfbe..3cf3d2b 100644
--- a/shm.c
+++ b/shm.c
@@ -295,7 +295,7 @@ void verify_shm(int policy, struct bitmask *nodes)
 			      policy_name(pol2), policy_name(policy));
 			return;
 		}
-		if (memcmp(nodes2, nodes, numa_bitmask_nbytes(nodes))) {
+		if (memcmp(nodes2->maskp, nodes->maskp, numa_bitmask_nbytes(nodes))) {
 			vwarn(p, "mismatched node mask\n");
 			printmask("expected", nodes);
 			printmask("real", nodes2);