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Wed, 6 Jan 2021 08:50:03 +0000 (UTC) Received: by mail-pj1-f44.google.com with SMTP id n3so2275475pjm.1 for ; Wed, 06 Jan 2021 00:50:03 -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=ZzyixQGA22PztCHoWMVb3aoY+aYlev25PUQfD61xRIU=; b=c1h2czxUSUbpHsdB4iBoOCMv92fTBJlrTNNN8pZTRAkAVXAMpC7mvGeNEujZTSK7ES 9lVAhDo1svl3YRAnZ8TQ+fL4pj6wKKHoiH4JzVA7TNDRza61TbLNEqODnH1kqlG0SRof QkSyY89PQ3YMT8FqXRFF87g1AKBBRor7qUoNTzqnfLYq+1vwBsIimaiyAj6h7YzDDsOl wTKSkO/ZE+Md2PT5bw/8f6elxhgmnZNDadXoxnX65sgMOMHhRi29DR0eqQ4KgtKClqWY bifB2nrVqj3dgL/Y0j/dfXnF0B4GflTvaXIRMI3hjPbHNl0BFRhfW3+Ekh8LEZ2L3hvV umBg== 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=ZzyixQGA22PztCHoWMVb3aoY+aYlev25PUQfD61xRIU=; 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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 Reviewed-by: Mike Kravetz --- mm/hugetlb.c | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 67200dd25b1d..7a24ed28ec4f 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1372,7 +1372,6 @@ 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