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=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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 EC155C63777 for ; Tue, 1 Dec 2020 01:46:30 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 34751206E0 for ; Tue, 1 Dec 2020 01:46:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=intel-com.20150623.gappssmtp.com header.i=@intel-com.20150623.gappssmtp.com header.b="rWNSLZcc" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 34751206E0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 80C806B0068; Mon, 30 Nov 2020 20:46:29 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 7BDAD8D0002; Mon, 30 Nov 2020 20:46:29 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6D4308D0001; Mon, 30 Nov 2020 20:46:29 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0048.hostedemail.com [216.40.44.48]) by kanga.kvack.org (Postfix) with ESMTP id 589586B0068 for ; Mon, 30 Nov 2020 20:46:29 -0500 (EST) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 070D1181AEF21 for ; Tue, 1 Dec 2020 01:46:29 +0000 (UTC) X-FDA: 77543023698.21.waves75_5a15e31273a6 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin21.hostedemail.com (Postfix) with ESMTP id DE87C180445EF for ; Tue, 1 Dec 2020 01:46:28 +0000 (UTC) X-HE-Tag: waves75_5a15e31273a6 X-Filterd-Recvd-Size: 3136 Received: from mail-ed1-f41.google.com (mail-ed1-f41.google.com [209.85.208.41]) by imf21.hostedemail.com (Postfix) with ESMTP for ; Tue, 1 Dec 2020 01:46:27 +0000 (UTC) Received: by mail-ed1-f41.google.com with SMTP id m16so638184edr.3 for ; Mon, 30 Nov 2020 17:46:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=intel-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=M+5BnXN0m77zeqbV9n5TCbwnpu1hY0RqzGtMEds/qCk=; b=rWNSLZccHLQMDZM511qECtn11KzmY9V1pm3NFzbNx9FNIAvMfbJZ5PhH7y7RJpOQFh NkY3FA5HR5Hf5mnziwzJM9svdIja4C0kx6z3oxGLOS+IWW7J2arI2VO2kc+FMAzkt1h2 n3Fu6rpF2T9mB3i+lPu0V5lqbvqCIRttoYP6vG3JP3T1bZe9839Cf9PCkUMZa/6GKJLR 11hBNNHNXJjNQ6JpUlNcuCZpCATMj4pAhtQHYEEhiz06MWPMl+cm1R7IUOpdNJnRcS7M ji5eScauaoh3xBsM9+ys81gjfuZGq+OdTLnNHeiZB9TB+mVemzSANEyYFu7dJH/1++BW tZJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=M+5BnXN0m77zeqbV9n5TCbwnpu1hY0RqzGtMEds/qCk=; b=Mojx3x9X63Rutt1eipvc85RlY5e65BL5SL0Cxh/dgxyuDqZZNGbIzTxtPsV6yK40an biy45vgr+4hK8Z0qffbZJw28QnaHc6+wbodVZ7nk5eUdxpyxeXX6Dym5XTh4qhAzGswk VtkreNlKDveekpgRgsaisAbbmUV3bToruPEtOQ0/zUenKig5l/PFNSPxZSyoWzOyt+Q3 2zivRFbtxAUvrTW4W3TRXt4oMo1Ry/j2+l9+9BWGUDKhnzT5XLVERUOSDykfPqjjvHEH nzMQ86bF13a8M7J3L7FqrinvfAVPBWHgFCMNG+ibm8Jl4il+3ad4wmcolWBHCSHB+KWH oh5g== X-Gm-Message-State: AOAM533xfA+EX6CSmmWhgFjECCtLCy8owf+7OEonCOlAr//pHFL/LLxo 9qoJErkK8J8MyNpLeg20FInjLatNfsEEyftMWhUu7Q== X-Google-Smtp-Source: ABdhPJyE+VpI66Bcq/qfk08x/yZj1ODh2sqzTbdACmS4BeDJH4RaasYLVZ8GxiVk5NOYT/7J2KzzyDhHSnpV/Yf3Gmo= X-Received: by 2002:a50:e0ce:: with SMTP id j14mr697382edl.18.1606787185958; Mon, 30 Nov 2020 17:46:25 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Dan Williams Date: Mon, 30 Nov 2020 17:46:22 -0800 Message-ID: Subject: Re: mapcount corruption regression To: "Shutemov, Kirill" , Matthew Wilcox Cc: Linux Kernel Mailing List , Linux MM , linux-nvdimm , Yi Zhang Content-Type: text/plain; charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Nov 30, 2020 at 5:20 PM Dan Williams wrote: > > Kirill, Willy, compound page experts, > > I am seeking some debug ideas about the following splat: > > BUG: Bad page state in process lt-pmem-ns pfn:121a12 Looks to be a similar signature that Yi Zhang is seeing: http://lore.kernel.org/r/51e938d1-aff7-0fa4-1a79-f77ac8bb2f8b@redhat.com