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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 31774C43381 for ; Sat, 16 Mar 2019 14:49:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 08F3321908 for ; Sat, 16 Mar 2019 14:49:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726921AbfCPOtC (ORCPT ); Sat, 16 Mar 2019 10:49:02 -0400 Received: from mail-it1-f197.google.com ([209.85.166.197]:40954 "EHLO mail-it1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727070AbfCPOtC (ORCPT ); Sat, 16 Mar 2019 10:49:02 -0400 Received: by mail-it1-f197.google.com with SMTP id n201so3399672ita.5 for ; Sat, 16 Mar 2019 07:49:01 -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=/FFaWZSA2YfhUyEx8nHr3wlA+vNq8J4vZ6bnwl4n+5Q=; b=NL+4mICiwBgtPX9N1n/7Gyh8QqsWwldZvQ4eNsMSExJbRL7G0SBgx6Vem+fTtykMA1 HmNk1aUD/dtXQau1TZam6bF/aDTD3EE2YBVpYyxekORkCUGn+s0mtGgTqAtp1zw6fZdS BWTOGTrkKypPkkTN+vo/YEnZWVy9HBNAI2c/8TZDFqYdLsMfEE7t4Jl+IWvpuEXpKwR5 eW9EFHqfbgDNTnQ3m7mACKnQV8fueACXtJJlGHhzm8w2kYMM6v+JbbxUDJZuKKDMeieY irMnOQcStSMebxNqDHyLNWngvRwVm0W5IvO/uWGdAmiaAgbjRkD5mWUZbz4Svb24aOgX BnTA== X-Gm-Message-State: APjAAAV0MltzsZZPvFO2A2lYCtBfKbXriMqaulS4LMh1lWOjNw/LmuTw gSaUI7QH88Kcf6sFyB43hRMf+8Q7tgKSKfHls52ZVTv7mUUJ X-Google-Smtp-Source: APXvYqzZSxxCbczTFfnFWh/AGNXppAXdTZUNLfOmpwHI/Q1FLc2y6tADXfO/CbpMJtelbR0Zwlju2MeUiXQOgFQ0DFJJ7YUvTrhD MIME-Version: 1.0 X-Received: by 2002:a5d:9b95:: with SMTP id r21mr5870876iom.38.1552747741521; Sat, 16 Mar 2019 07:49:01 -0700 (PDT) Date: Sat, 16 Mar 2019 07:49:01 -0700 In-Reply-To: <00000000000016f7d40583d79bd9@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008f302105843741ad@google.com> Subject: Re: WARNING: bad usercopy in fanotify_read From: syzbot To: akpm@linux-foundation.org, amir73il@gmail.com, cai@lca.pw, crecklin@redhat.com, jack@suse.cz, keescook@chromium.org, linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org syzbot has bisected this bug to: commit a8b13aa20afb69161b5123b4f1acc7ea0a03d360 Author: Amir Goldstein Date: Thu Jan 10 17:04:36 2019 +0000 fanotify: enable FAN_REPORT_FID init flag bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11e78d6f200000 start commit: a8b13aa2 fanotify: enable FAN_REPORT_FID init flag git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=13e78d6f200000 console output: https://syzkaller.appspot.com/x/log.txt?x=15e78d6f200000 kernel config: https://syzkaller.appspot.com/x/.config?x=e9d91b7192a5e96e dashboard link: https://syzkaller.appspot.com/bug?extid=2c49971e251e36216d1f syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1287516f200000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17ee410b200000 Reported-by: syzbot+2c49971e251e36216d1f@syzkaller.appspotmail.com Fixes: a8b13aa2 ("fanotify: enable FAN_REPORT_FID init flag")