From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0EC2C4338F for ; Sat, 14 Aug 2021 23:25:53 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id EEFFB60F51 for ; Sat, 14 Aug 2021 23:25:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org EEFFB60F51 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 24C178D0001; Sat, 14 Aug 2021 19:25:52 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1FC106B0071; Sat, 14 Aug 2021 19:25:52 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 112418D0001; Sat, 14 Aug 2021 19:25:52 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0111.hostedemail.com [216.40.44.111]) by kanga.kvack.org (Postfix) with ESMTP id EE1AA6B006C for ; Sat, 14 Aug 2021 19:25:51 -0400 (EDT) Received: from smtpin40.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 87A658249980 for ; Sat, 14 Aug 2021 23:25:51 +0000 (UTC) X-FDA: 78475270902.40.4CEF496 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf22.hostedemail.com (Postfix) with ESMTP id 4237FB263 for ; Sat, 14 Aug 2021 23:25:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=hPEyx1TMU52F7z7VfmQhvcPax967bzgQrYJgqNP/sUQ=; b=t6W6WorpKODERSTnEWyYsgN2Er 5Zu5/v+h7AzF6OB6JjVByW2VwrGrb7Y965h/2MzcoN144BqdUOGQklL3FIc7G5xMI6qU3Tryxrg5O +jHOx8IIXZ0HowfmNtLHr+8wUjl1AO/AoAf79jUvFHEng5pbu8LR7rLmzYpGLnymFLCen/RI/1duL Gyld7+WHIAXJThr7PN2101rXE4Zftk6EB2naSwU2ao54p+2bUjmMyISoBEFZvcaTlGm8X8FCdPXJj HMso+VbRpgqkKXsZpoZWFDZvWpzUi+HnJ5EFrDUXYlFEq1LzI0aMAGeJvWbRXC8DL1kk9vbqYehf6 3thZHrOA==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mF31E-00HBYz-93; Sat, 14 Aug 2021 23:25:03 +0000 Date: Sun, 15 Aug 2021 00:24:48 +0100 From: Matthew Wilcox To: Andrew Morton Cc: syzbot , linux-kernel@vger.kernel.org, linux-mm@kvack.org, mike.kravetz@oracle.com, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] BUG: unable to handle kernel paging request in alloc_huge_page Message-ID: References: <000000000000fbad4305c982f836@google.com> <20210814150652.c61e3c09a58222260fa2d02d@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210814150652.c61e3c09a58222260fa2d02d@linux-foundation.org> Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=t6W6Worp; dmarc=none; spf=none (imf22.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org X-Stat-Signature: rcqhh8e11agj3hrbnbmqgeebnni1f1h3 X-Rspamd-Queue-Id: 4237FB263 X-Rspamd-Server: rspam05 X-HE-Tag: 1628983549-732466 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000089, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sat, Aug 14, 2021 at 03:06:52PM -0700, Andrew Morton wrote: > On Sat, 14 Aug 2021 04:07:23 -0700 syzbot wrote: > > HEAD commit: 92d00774360d Add linux-next specific files for 20210810 > > RIP: 0010:__list_add include/linux/list.h:71 [inline] > > RIP: 0010:list_add include/linux/list.h:86 [inline] > > RIP: 0010:alloc_huge_page+0xdcb/0x11b0 mm/hugetlb.c:2821 > > That appears to be > > list_add(&page->lru, &h->hugepage_activelist); > > I'm suspecting Mike's surplus page changes? Is this not the same as https://lore.kernel.org/linux-mm/846c4502-3332-0d25-87f5-cb3b71afc38f@quicinc.com/ which is already patched in your tree?