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_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 E9FF0C282CE for ; Wed, 5 Jun 2019 01:16:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BD1E52070B for ; Wed, 5 Jun 2019 01:16:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726354AbfFEBQB (ORCPT ); Tue, 4 Jun 2019 21:16:01 -0400 Received: from mail-it1-f200.google.com ([209.85.166.200]:36711 "EHLO mail-it1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726341AbfFEBQB (ORCPT ); Tue, 4 Jun 2019 21:16:01 -0400 Received: by mail-it1-f200.google.com with SMTP id 12so609264itj.1 for ; Tue, 04 Jun 2019 18:16:00 -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=tq94hQ5Or5MBqoFOhglGdojFAqBC1MTKP/WSj5YIV/8=; b=P6YQjHlPTkzBBqnQzNfRJFvInvERHR6ytHdKTiG+6vMUiiVX0AGhrqBPvIM86s41Nd RlyqA4/6Ho3X46Sgpw+fJ2U5XX21LJg5gOMEyTCPLn5+6bfytmvfJY+rPuUt3k6C1gSv EXuFerm7mLCPdAAFiiEuaWhRmQQWyDVIssVTs+6dbXNAauyajcVEn2a+rDTTfjH0JHlv 9/mOAjjqr3dkiIfcLUWoJTz2D4yvYhrKvNAlrDQqpenT41iQrRs2K3ef6nDGu0kSUTWH NRmn2gqPG5Co/XgeKtsgTH2uQDG0BNRoaiC874WQK6kEFxlj80xGufKpOvl/+NkLVQqT vqNw== X-Gm-Message-State: APjAAAX8vcERQgtu0HfhxDh7xk7NrmDh8mLOvo6g6HC0aEiFB/RDPaW8 B9GhTxBNz7Fb4YmHYHjCt/1lNjzwulaOxE0Rlxx/x1MrsjMw X-Google-Smtp-Source: APXvYqyZ29aiETxQGapPeY5BBEdXLC0rlE3NJCR2G4dNoGSX9gBRxgTLHXrDZB5y+iumqWQ8OcygrjVAkKZaPDKVOogeeEOvOhLK MIME-Version: 1.0 X-Received: by 2002:a6b:e00b:: with SMTP id z11mr6761741iog.27.1559697360239; Tue, 04 Jun 2019 18:16:00 -0700 (PDT) Date: Tue, 04 Jun 2019 18:16:00 -0700 In-Reply-To: <000000000000543e45058a3cf40b@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001d42b5058a895703@google.com> Subject: Re: possible deadlock in get_user_pages_unlocked (2) From: syzbot To: akpm@linux-foundation.org, aneesh.kumar@linux.ibm.com, dan.j.williams@intel.com, ira.weiny@intel.com, jack@suse.cz, jhubbard@nvidia.com, jmorris@namei.org, keith.busch@intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-security-module@vger.kernel.org, richard.weiyang@gmail.com, rppt@linux.ibm.com, serge@hallyn.com, sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com, willy@infradead.org, zohar@linux.ibm.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: syzbot has bisected this bug to: commit 69d61f577d147b396be0991b2ac6f65057f7d445 Author: Mimi Zohar Date: Wed Apr 3 21:47:46 2019 +0000 ima: verify mprotect change is consistent with mmap policy bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1055a2f2a00000 start commit: 56b697c6 Add linux-next specific files for 20190604 git tree: linux-next final crash: https://syzkaller.appspot.com/x/report.txt?x=1255a2f2a00000 console output: https://syzkaller.appspot.com/x/log.txt?x=1455a2f2a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=4248d6bc70076f7d dashboard link: https://syzkaller.appspot.com/bug?extid=e1374b2ec8f6a25ab2e5 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=165757eea00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10dd3e86a00000 Reported-by: syzbot+e1374b2ec8f6a25ab2e5@syzkaller.appspotmail.com Fixes: 69d61f577d14 ("ima: verify mprotect change is consistent with mmap policy") For information about bisection process see: https://goo.gl/tpsmEJ#bisection