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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 AB9B0C2BB86 for ; Fri, 10 Apr 2020 15:38:24 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 6FAF620857 for ; Fri, 10 Apr 2020 15:38:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="g8Vghjl/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6FAF620857 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 0D1948E0041; Fri, 10 Apr 2020 11:38:24 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 082018E0003; Fri, 10 Apr 2020 11:38:24 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EB2998E0041; Fri, 10 Apr 2020 11:38:23 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0092.hostedemail.com [216.40.44.92]) by kanga.kvack.org (Postfix) with ESMTP id D13618E0003 for ; Fri, 10 Apr 2020 11:38:23 -0400 (EDT) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 8759BA749 for ; Fri, 10 Apr 2020 15:38:23 +0000 (UTC) X-FDA: 76692352086.15.time16_e8756d70ba28 X-HE-Tag: time16_e8756d70ba28 X-Filterd-Recvd-Size: 2223 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf10.hostedemail.com (Postfix) with ESMTP for ; Fri, 10 Apr 2020 15:38:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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=l8VIsmPRPr8v5kMqS/+p4+AvU2dJrNR5q5j6y6m9bss=; b=g8Vghjl/BN/1ByHXoBndldGfIQ DESR63bbRPlCYQN4u+cDrCG5aOJSvXg4PQdiD3RF4mlgKFgQ5ib3u59SMl0C8ybOcAzs73ejoRV6d r8JjSoBKP8dwYDH65B/gOcTcf5U7UH/hhFaP3UkyKHuIImsP9xrDkiXDAhPNDljnqnXJGr8a+R57A zMRC8wqi6ccE1Ve+0frtLJlqLz0stxIgjialP8aWo6b+HksDUE8yrPoJtdeZ2bZN19/gCzM/yO9c3 NHWFo3a4wzj2r0zeP5NFdhM3nwm6JNZfuV/9Rxy8hLy5Igws6fPJ8tfdQCrJrO5c8QTv9nj4KuHUb lbpEi2IQ==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jMvjJ-0007BR-Bq; Fri, 10 Apr 2020 15:38:05 +0000 Date: Fri, 10 Apr 2020 08:38:05 -0700 From: Matthew Wilcox To: Peter Xu Cc: Hillf Danton , kernel test robot , Andrew Morton , Linux Memory Management List , linux-kernel@vger.kernel.org Subject: Re: f45ec5ff16 ("userfaultfd: wp: support swap and page migration"): [ 140.777858] BUG: Bad rss-counter state mm:b278fc66 type:MM_ANONPAGES val:1 Message-ID: <20200410153805.GA21484@bombadil.infradead.org> References: <20200410002518.GG8179@shao2-debian> <20200410073209.11164-1-hdanton@sina.com> <20200410153234.GB3172@xz-x1> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200410153234.GB3172@xz-x1> 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 Fri, Apr 10, 2020 at 11:32:34AM -0400, Peter Xu wrote: > I'm still trying to digest on what's happened... It would be good too > if more information on the test could be given, e.g., what is the > behavior of trinity-c2. A reproducer is of course even better. Trinity is a syscall fuzzer. Don't expect what it's doing to make any sense, it's just executing syscalls at random.