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[209.85.208.171]) by smtp.gmail.com with ESMTPSA id w24sm12425464ljh.57.2020.04.07.17.05.08 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 Apr 2020 17:05:09 -0700 (PDT) Received: by mail-lj1-f171.google.com with SMTP id g27so5647714ljn.10 for ; Tue, 07 Apr 2020 17:05:08 -0700 (PDT) X-Received: by 2002:a2e:a58e:: with SMTP id m14mr3154247ljp.204.1586304308658; Tue, 07 Apr 2020 17:05:08 -0700 (PDT) MIME-Version: 1.0 References: <00000000000018a92305a2ba57e0@google.com> <20200407220837.GB66033@xz-x1> In-Reply-To: <20200407220837.GB66033@xz-x1> From: Linus Torvalds Date: Tue, 7 Apr 2020 17:04:52 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: BUG: unable to handle kernel paging request in get_pfnblock_flags_mask To: Peter Xu Cc: syzbot , Andrew Morton , Brian Geffon , Linux Kernel Mailing List , Linux-MM , syzkaller-bugs Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 7, 2020 at 3:08 PM Peter Xu wrote: > > Thanks; I think this is a dup of previous one too: Peter, since the two nasties are both fairly bad, would you mind sending me your two patches and I'll just apply them directly. I've seen them fly by, but I think they both happened inside the threads discussing the problem, and I'd much rather have the final patch sent to me explicitly (with confirmation that syzbot tested them - again I _think_ I saw that fly by too, but my mailbox is fairly chaotic..) Linus 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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,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 24351C2D0EC for ; Wed, 8 Apr 2020 00:05:14 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id CC7822054F for ; Wed, 8 Apr 2020 00:05:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="RfefjE1T" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC7822054F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 7911E8E0005; Tue, 7 Apr 2020 20:05:13 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 7423D8E0001; Tue, 7 Apr 2020 20:05:13 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 609B18E0005; Tue, 7 Apr 2020 20:05:13 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0081.hostedemail.com [216.40.44.81]) by kanga.kvack.org (Postfix) with ESMTP id 45FE28E0001 for ; Tue, 7 Apr 2020 20:05:13 -0400 (EDT) Received: from smtpin18.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 00A78180AD801 for ; Wed, 8 Apr 2020 00:05:12 +0000 (UTC) X-FDA: 76682742906.18.swing53_2d7e0c853314d X-HE-Tag: swing53_2d7e0c853314d X-Filterd-Recvd-Size: 3895 Received: from mail-lj1-f196.google.com (mail-lj1-f196.google.com [209.85.208.196]) by imf03.hostedemail.com (Postfix) with ESMTP for ; Wed, 8 Apr 2020 00:05:12 +0000 (UTC) Received: by mail-lj1-f196.google.com with SMTP id p10so5731709ljn.1 for ; Tue, 07 Apr 2020 17:05:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=xIrR6bYca0pm2GJAq9Eb2z2zbLCcWgcw1hONud88tGI=; b=RfefjE1TimGEmBWEYxlaE/AiBpOVt1Uk0Drlf3I8ZJb0O4WXKbDzGGUcGLpSnOHEhp FCgsojfCWzwQP3E/sr9GD1ZyDEtgqn2gZNFoAiBYjUII4mzIAx6gdwZd3XUkMTt7+tTZ zq6O469mwpErQ5rkzqaJDD9339W+4V6tTVcUM= 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=xIrR6bYca0pm2GJAq9Eb2z2zbLCcWgcw1hONud88tGI=; b=eVfBdhvPmzT6DUrEjhaSUUK/Hfj3R8bZpJn6vBv29Cq5sbTnObqpT4tLtkZ4TBXLTQ TLeeNuilsVajE7sdUjwjHnCTTMCzBmHo8AzX156lgvhNvdk0oG0r3tPZuXOeN1ZdEYC/ bLBGkzNOoQbnSgS9xdmVD5H7OnPPUB486Q/Pr/3CtL+JBsOnd+TsyWtqF7F5V22Jc7Cg vepdyEDDVCQInHyzBMjlN4ijVgwc89+CHacLBc9f3STOm1RvM4+kQkSbVzVrq844IXRl RFto+oduGFFal1Gw6+nFQ/+SH6dzv3IFyEu0GEGt9ipxbdDvER2eafckmq1lgfFL97O2 EWJQ== X-Gm-Message-State: AGi0PubxIOmjTBn2h7gxaZya9Q/m2yh4G1IiT83Av3OK8EdZJITktTUe yNd8XcSmZC63PjO/49vGNDtvId+fc0E= X-Google-Smtp-Source: APiQypJrHEnblb/iB/NTZf+G0vI4eeKm0eO4HtdOhgagEyUbuZsfmGLfCS2fazpMbHOePD9C8knTfQ== X-Received: by 2002:a2e:151e:: with SMTP id s30mr3201860ljd.92.1586304310035; Tue, 07 Apr 2020 17:05:10 -0700 (PDT) Received: from mail-lj1-f171.google.com (mail-lj1-f171.google.com. [209.85.208.171]) by smtp.gmail.com with ESMTPSA id y29sm12542557ljd.26.2020.04.07.17.05.08 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 Apr 2020 17:05:09 -0700 (PDT) Received: by mail-lj1-f171.google.com with SMTP id b1so5726212ljp.3 for ; Tue, 07 Apr 2020 17:05:08 -0700 (PDT) X-Received: by 2002:a2e:a58e:: with SMTP id m14mr3154247ljp.204.1586304308658; Tue, 07 Apr 2020 17:05:08 -0700 (PDT) MIME-Version: 1.0 References: <00000000000018a92305a2ba57e0@google.com> <20200407220837.GB66033@xz-x1> In-Reply-To: <20200407220837.GB66033@xz-x1> From: Linus Torvalds Date: Tue, 7 Apr 2020 17:04:52 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: BUG: unable to handle kernel paging request in get_pfnblock_flags_mask To: Peter Xu Cc: syzbot , Andrew Morton , Brian Geffon , Linux Kernel Mailing List , Linux-MM , syzkaller-bugs 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 Tue, Apr 7, 2020 at 3:08 PM Peter Xu wrote: > > Thanks; I think this is a dup of previous one too: Peter, since the two nasties are both fairly bad, would you mind sending me your two patches and I'll just apply them directly. I've seen them fly by, but I think they both happened inside the threads discussing the problem, and I'd much rather have the final patch sent to me explicitly (with confirmation that syzbot tested them - again I _think_ I saw that fly by too, but my mailbox is fairly chaotic..) Linus