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 47A1BC10F03 for ; Sat, 16 Mar 2019 14:49:04 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id E620921903 for ; Sat, 16 Mar 2019 14:49:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E620921903 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 37DA96B02D5; Sat, 16 Mar 2019 10:49:03 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 309026B02D6; Sat, 16 Mar 2019 10:49:03 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1FAC96B02D7; Sat, 16 Mar 2019 10:49:03 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-it1-f200.google.com (mail-it1-f200.google.com [209.85.166.200]) by kanga.kvack.org (Postfix) with ESMTP id DA8936B02D5 for ; Sat, 16 Mar 2019 10:49:02 -0400 (EDT) Received: by mail-it1-f200.google.com with SMTP id z131so10472278itb.2 for ; Sat, 16 Mar 2019 07:49:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:mime-version :date:in-reply-to:message-id:subject:from:to; bh=/FFaWZSA2YfhUyEx8nHr3wlA+vNq8J4vZ6bnwl4n+5Q=; b=NfAJGTberiyssf78fY1PnQoVLORgk3H/73ZpQPoSlIE7V5ehacGSBTOhscvxtubB2y 6TuQTe5hFAC7Xfa2VVKTVMFw/k9Grn3j/mhC8uMO6d7ptTsFEsNrK238ESqqY1F/MIWR zcP2fdzmFLqXwSiysJ8sD3UWWQUvuG/Xvh0OxU85LaHqpo5XJcXjETn26b/C+Zhp5E3w da4cmwIXMRSJBSrAYS+kww267SLV3xAobyHCsqtp0oAxhaFrKpdhKk/DJA5XMhScfTL6 z6xUmHybDTJXaElRnyjOgyzAbOnK9pXp8sq/BYuHmnEEuDAKKkEcDukRMCXvRmnH+Ijn eTbg== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of 33qynxakbabyekl6w770dwbb4z.2aa270ge0dya9f09f.ya8@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) smtp.mailfrom=33QyNXAkbABYEKL6w770DwBB4z.2AA270GE0DyA9F09F.yA8@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com X-Gm-Message-State: APjAAAWirxJDKNn7kr4fywQfx+QMjKjHUUHnDV5lXDlx2uR10d/gt/TF VcyvLOEWALk0N6Pigzq/UDopYznqsH/3NmH3BxtwlImH64+SJyk6KyKnIHTyLG5pG89+zK+ee39 LLjeiQxjIADdyviH4KAP10QRQJGA+8oQZ8GNhxCQIgSj/YrMteXhRghYAZdBIZ2A= X-Received: by 2002:a5d:9446:: with SMTP id x6mr4842863ior.236.1552747742604; Sat, 16 Mar 2019 07:49:02 -0700 (PDT) X-Received: by 2002:a5d:9446:: with SMTP id x6mr4842843ior.236.1552747741843; Sat, 16 Mar 2019 07:49:01 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1552747741; cv=none; d=google.com; s=arc-20160816; b=pcNJ6KPc4aYjrMjpYA1xLB8qc+KNI44bgwKCkDoQYjuaITIiWLS6Dw9i38mvMF3UpP peftH3bOoyRDplnle8+6+9gYij0o8y2i90dx+WfTGUtQnsFfdCa4gcwXHwuri57Ftnwf ipeWFeNb6mdlYdNKmm8xDt+Q0pvCCpY2toYJeyy+otW0HYKciN6SgdtCY6QwvCwOq8hf arH1j/RpnAgwQ9IcdWFj3KfBb44KPlwOp9MZ0/0qUM502+9iIf0S6Yv918QMskDpWrft 1/ZjPUVgRA+mXm1hJ+CJjZODcPbR0TYNa3j4ERtwHBlRWrJz+IJLSvZzmcAjPF0oGpNP Rbbg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=to:from:subject:message-id:in-reply-to:date:mime-version; bh=/FFaWZSA2YfhUyEx8nHr3wlA+vNq8J4vZ6bnwl4n+5Q=; b=0RhM0qycriqXnKVRkupl032fDiPUd7CaEIgAwICYJ8KCJ5hSVlkb+NrRHSpVd3WOpS y/g02Ja8PY+oRcd8+wIDSJk6tEx7OKu2kOYXsTjOFK6Ire9wbh27gjWwfXB4DCkhfXKY aGzQjRraFYzlJupIqV1SfUy/kwqPEkwS0ius0XrCZJVutRmfwZf/AB/o46YnqdxuK3dY b2m+niWWAOuUeIOZU8ryxlKXOSIy4cGfDjobQGFI2mbjxPOAe66ee2j2ZxAGvQz6LRac BTDWbNYZH7UCaRBeWcDOKXW7Woy9k/39/JJ9sOh1X4uBjgfjvkWoiavpdeuxOH+CB1cA K3nA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of 33qynxakbabyekl6w770dwbb4z.2aa270ge0dya9f09f.ya8@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) smtp.mailfrom=33QyNXAkbABYEKL6w770DwBB4z.2AA270GE0DyA9F09F.yA8@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: from mail-sor-f69.google.com (mail-sor-f69.google.com. [209.85.220.69]) by mx.google.com with SMTPS id q8sor2642282ioi.73.2019.03.16.07.49.01 for (Google Transport Security); Sat, 16 Mar 2019 07:49:01 -0700 (PDT) Received-SPF: pass (google.com: domain of 33qynxakbabyekl6w770dwbb4z.2aa270ge0dya9f09f.ya8@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) client-ip=209.85.220.69; Authentication-Results: mx.google.com; spf=pass (google.com: domain of 33qynxakbabyekl6w770dwbb4z.2aa270ge0dya9f09f.ya8@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) smtp.mailfrom=33QyNXAkbABYEKL6w770DwBB4z.2AA270GE0DyA9F09F.yA8@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com 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 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: 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")