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Mon, 4 Jan 2021 07:04:40 +0000 (UTC) Received: by mail-pj1-f46.google.com with SMTP id z12so9483899pjn.1 for ; Sun, 03 Jan 2021 23:04:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=EISNFuU48YmH5mVT0GE+4yn3CQnSse+shUM8yzbBpaU=; b=Xmgjt/nOSUnyWkfS8V2b6zGYX7FQPWtZlXXQ7l8c1xqvRCoxP1WJyxx6yRZgHZrNW9 FKgtJ/N/l8uSXO6qVfmgrUa8iZGRMmnithwfYa7bZ/vmHcu6QYCD+ksPXncP0yNug6eY UV3Gf7fJfNBcBQpmN9xaNylvpe/6bxIYLrW4cKsg7J0OmLio0Ipyuzl6zGnCddM2wDSo UMidatDFEY9JKZgpquEhsuVdTG7WVm7uIwkXPUqhA09KItm3Kyhoe1keIKuZJGjd/Q4J Z5TxBks0c6M/mnN+AXgvJk1/m1UqJ4s/Q/hPRtwKPFVVM1bPPIJeP1xmKwtpZ8PwtoT1 5Esw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=EISNFuU48YmH5mVT0GE+4yn3CQnSse+shUM8yzbBpaU=; 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So when we call page_huge_active() from scan_movable_pages(), the HugeTLB page can be freed parallel. Then we will trigger a BUG_ON which is in the page_huge_active() when CONFIG_DEBUG_VM is enabled. Just remove the VM_BUG_ON_PAGE. Fixes: 7e1f049efb86 ("mm: hugetlb: cleanup using paeg_huge_active()") Signed-off-by: Muchun Song --- mm/hugetlb.c | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 5c2f64f53177..4c8631114e88 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1360,7 +1360,6 @@ struct hstate *size_to_hstate(unsigned long size) */ bool page_huge_active(struct page *page) { - VM_BUG_ON_PAGE(!PageHuge(page), page); return PageHead(page) && PagePrivate(&page[1]); } =20 --=20 2.11.0