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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 F0A4DC2BA2B for ; Thu, 16 Apr 2020 06:58:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A300D2087E for ; Thu, 16 Apr 2020 06:58:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2437811AbgDPG6M (ORCPT ); Thu, 16 Apr 2020 02:58:12 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:45661 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2437733AbgDPG6D (ORCPT ); Thu, 16 Apr 2020 02:58:03 -0400 Received: by mail-io1-f72.google.com with SMTP id y4so18679228ioy.12 for ; Wed, 15 Apr 2020 23:58:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=+GQulpXu2Zt/P9Hq8wYFo5idVVKpKyslYLuc6L5PFmk=; b=mm9p+FMK13nuCdxJ1YUKqeRAKz2o7PdM+jWtdSwvzl4pDvqmkQfw70pNnQUkH68Vgp +3kNuIyp1rzay3Ogjk2ixoFYXWvctOwnOXtUpgguu+kNl9+jxDotUSCyc90qoPbSk2WU ZPbxXyIJeohMRxGXQbYokjvIUk1+UiA16u6HoO5GRr59rg4/3j9VJcGcDHFXVKGR8+ZB wV9L9o8dR90mzm3iosqEqUfMzJsKo7GZ1KYR9NFKbpxOs6Sjq9623F/3TaJ9u8ZFqMZC tZ+PhcyimovhewqwCUyT6j0/4gehdIANMLFi/Grf90ZXZFtCe8FWvOc8GTz61X9314Ie Iu/w== X-Gm-Message-State: AGi0Pubn/zaTLWYGjPd2qRCItuSlYOty3ZB8XqbupUYNLRjX6TskdJnP wyoIqlVP2M1PKeXcH0zfqgJJUdhfvTJ67dVqHJdikKwfI9Hu X-Google-Smtp-Source: APiQypLXL68tRkrOK+4lHNQRvcpYhVNSNYSIiu34JiJTrQQDojKK9Zbqotwo9YF4xSkTEnnlxk7Hc5LvjRkE0SYDyayPpqFTZQlC MIME-Version: 1.0 X-Received: by 2002:a92:a103:: with SMTP id v3mr9309533ili.194.1587020282361; Wed, 15 Apr 2020 23:58:02 -0700 (PDT) Date: Wed, 15 Apr 2020 23:58:02 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002e7e1505a362f4c3@google.com> Subject: Re: possible deadlock in shmem_mfill_atomic_pte From: syzbot To: akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, shy828301@gmail.com, syzkaller-bugs@googlegroups.com 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 Hello, syzbot has tested the proposed patch and the reproducer did not trigger crash: Reported-and-tested-by: syzbot+e27980339d305f2dbfd9@syzkaller.appspotmail.com Tested on: commit: 8f9c86c9 mm: shmem: disable interrupt when acquiring info-.. git tree: https://github.com/yang-shi/linux.git kernel config: https://syzkaller.appspot.com/x/.config?x=11f10cc27c63cade dashboard link: https://syzkaller.appspot.com/bug?extid=e27980339d305f2dbfd9 compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) Note: testing is done by a robot and is best-effort only.