Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Wed, 21 Feb 2018 11:01:07 +0100
From:   Michal Hocko <mhocko@kernel.org>
To:     Dan Rue <dan.rue@linaro.org>
Cc:     Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
        Mike Kravetz <mike.kravetz@oracle.com>,
        Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 5/6] mm, hugetlb: further simplify hugetlb allocation API
Message-ID: <20180221100107.GC2231@dhcp22.suse.cz>
References: <20180103093213.26329-1-mhocko@kernel.org>
 <20180103093213.26329-6-mhocko@kernel.org>
 <20180221042457.uolmhlmv5je5dqx7@xps>
 <20180221095526.GB2231@dhcp22.suse.cz>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20180221095526.GB2231@dhcp22.suse.cz>
User-Agent: Mutt/1.9.3 (2018-01-21)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Wed 21-02-18 10:55:26, Michal Hocko wrote:
> On Tue 20-02-18 22:24:57, Dan Rue wrote:
[...]
> > I bisected the failure to this commit. The problem is seen on multiple
> > architectures (tested x86-64 and arm64).
> 
> The patch shouldn't have introduced any functional changes IIRC. But let
> me have a look

Hmm, I guess I can see it. Does the following help?
---
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 7c204e3d132b..a963f2034dfc 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1583,7 +1583,7 @@ static struct page *alloc_surplus_huge_page(struct hstate *h, gfp_t gfp_mask,
 		page = NULL;
 	} else {
 		h->surplus_huge_pages++;
-		h->nr_huge_pages_node[page_to_nid(page)]++;
+		h->surplus_huge_pages_node[page_to_nid(page)]++;
 	}
 
 out_unlock:
-- 
Michal Hocko
SUSE Labs