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=-1.0 required=3.0 tests=DKIMWL_WL_HIGH,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 E42D0C2BB1D for ; Wed, 8 Apr 2020 01:25:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B970B206F7 for ; Wed, 8 Apr 2020 01:25:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="CrKM7ZbT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726475AbgDHBZo (ORCPT ); Tue, 7 Apr 2020 21:25:44 -0400 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:45448 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726407AbgDHBZo (ORCPT ); Tue, 7 Apr 2020 21:25:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1586309143; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=lM7goQi5iDZRKfqm5MbWtS0yDwFe6ni2YZ0TOqXzILY=; b=CrKM7ZbTTKrS6gVMHmByfM+51rvi4BAsexYCm1yIOJB7h2xePaO2LOj2Sg/ChugXgIARPB 6JrNMQXJ0GwuOdWmlQHp2p0GCx5Acl5AFrlZtyV5mVBH61bJxWwQWZrSS6uSMltcK7dDUx uHgIbph2GLjCN6IyW62it2MueYJqTzU= Received: from mail-qk1-f198.google.com (mail-qk1-f198.google.com [209.85.222.198]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-407-uy93qyq7NkaKwtalbL9lNA-1; Tue, 07 Apr 2020 21:25:41 -0400 X-MC-Unique: uy93qyq7NkaKwtalbL9lNA-1 Received: by mail-qk1-f198.google.com with SMTP id r64so1346494qkc.17 for ; Tue, 07 Apr 2020 18:25:40 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=lM7goQi5iDZRKfqm5MbWtS0yDwFe6ni2YZ0TOqXzILY=; b=W47OWUfSJL99KwF3RU4sOtk83iCNywJOQ8exg8KzkvzsHQC9FcYB+VMGWVk3/L1BKU +PGXF7i6PFa/Ij8WoML1FheNDSnqcXppY17/zOWv1ETQm9xNxP6aDW/UMBUuLRtp28f0 rzaWUocO4kaV83oxvuaoDxBSfgINP+7jruZTBDgfftZUy6b1P+TEd46C7npkNE4Sa2mI Q/nhMj4jfWQ3hbQX4bHN9ZBHQ2yNlrTkx+FyK0HyZv8Ir1uxTqauIFbXqkJfhKinMMVy qFUJVyeFvJ1cOOlYeHxuTuWaYBn3CJkv3wOfQ59AXYTdXfGnD+hDgJfOjt+WY7NdLbsm dgpg== X-Gm-Message-State: AGi0PuY8WA3dcTdRRIpXLW2rnuHirDM7Ee0qYV1QPCgR3ULhgUXdVX3O kf6WMLMq1RYStFeoYcLDxspV8juBC6bt4dGmO2nS6ueeTLiPd8ETp9nqXqbdqzLU4GS6w5q8q2q eWcmG3ZVXkN8Rky0OX3PkzVvp X-Received: by 2002:aed:2e07:: with SMTP id j7mr5312117qtd.40.1586309140582; Tue, 07 Apr 2020 18:25:40 -0700 (PDT) X-Google-Smtp-Source: APiQypLgUqE+QHH3SuksCDeKtpWwmj+2h4BnQPxOzlmzsRUG0L7NoQHj2y0UA6ks4SwMpFr9ptJdsA== X-Received: by 2002:aed:2e07:: with SMTP id j7mr5312093qtd.40.1586309140263; Tue, 07 Apr 2020 18:25:40 -0700 (PDT) Received: from xz-x1 ([2607:9880:19c0:32::3]) by smtp.gmail.com with ESMTPSA id n67sm1479346qke.88.2020.04.07.18.25.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Apr 2020 18:25:39 -0700 (PDT) Date: Tue, 7 Apr 2020 21:25:38 -0400 From: Peter Xu To: Linus Torvalds Cc: syzbot , Andrew Morton , Brian Geffon , Linux Kernel Mailing List , Linux-MM , syzkaller-bugs Subject: Re: BUG: unable to handle kernel paging request in get_pfnblock_flags_mask Message-ID: <20200408012538.GC66033@xz-x1> References: <00000000000018a92305a2ba57e0@google.com> <20200407220837.GB66033@xz-x1> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 07, 2020 at 05:04:52PM -0700, Linus Torvalds wrote: > 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..) Sure, I'll post a small series very soon with the two verified patches formally. Thanks, -- Peter Xu