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 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 34321C2BA2B for ; Thu, 16 Apr 2020 06:58:04 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id EE5302087E for ; Thu, 16 Apr 2020 06:58:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EE5302087E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 9FE538E0098; Thu, 16 Apr 2020 02:58:03 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9AE6D8E0001; Thu, 16 Apr 2020 02:58:03 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8C41F8E0098; Thu, 16 Apr 2020 02:58:03 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0040.hostedemail.com [216.40.44.40]) by kanga.kvack.org (Postfix) with ESMTP id 711F58E0001 for ; Thu, 16 Apr 2020 02:58:03 -0400 (EDT) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 2AEE14DB8 for ; Thu, 16 Apr 2020 06:58:03 +0000 (UTC) X-FDA: 76712813646.11.root54_292c36a114f05 X-HE-Tag: root54_292c36a114f05 X-Filterd-Recvd-Size: 2644 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) by imf36.hostedemail.com (Postfix) with ESMTP for ; Thu, 16 Apr 2020 06:58:02 +0000 (UTC) Received: by mail-il1-f197.google.com with SMTP id f75so8081556ilh.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=nGbM+lpFsEzUg2J6Qv4TPg7OtMHFCBoylyiVFeB0you6FW2pmh/M9pf2LpdtA7jZKy l0+jI3puyCEv2FpjFPs0P4qN7Wm6FnvI3QVPDV8ImYTNvgvrSOopMKM0NYk7RaaUnc+Z OiGppblef4bO03fnmJZTYVuahYvJPWqCSU4+SdwIr30rAbZEY+XHUkxHw+cbaXZHhagg 2425MFE07zdyLzhEb9IKH8T1hmaJi1yOKt0pF7ulpO/ykQmOKx20e3kIoJouYfdc/XS9 Z1J/ajBepE2vqxBpCVb0S/G6Qvs4hX6z3phwBwnCuhpo7MItpNP2e3dRWbJO51GMZOnl 3HlA== X-Gm-Message-State: AGi0PubamyKotc+/3+xwjiQ4XLqxaeH+eIdzBzp2SX2ErdpJ0tW/fmnW c2ED4ZW85jyn+2E4LT/xyOeSozAJan4o249DCTIOmog9B3od 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" X-Bogosity: Ham, tests=bogofilter, spamicity=0.002117, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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.