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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A7D42C38145 for ; Fri, 2 Sep 2022 15:59:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237809AbiIBP7g (ORCPT ); Fri, 2 Sep 2022 11:59:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58310 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237151AbiIBP7Q (ORCPT ); Fri, 2 Sep 2022 11:59:16 -0400 Received: from mail-pl1-x62d.google.com (mail-pl1-x62d.google.com [IPv6:2607:f8b0:4864:20::62d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 61FF411C09 for ; Fri, 2 Sep 2022 08:53:28 -0700 (PDT) Received: by mail-pl1-x62d.google.com with SMTP id f24so2285726plr.1 for ; Fri, 02 Sep 2022 08:53:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date; bh=/QliZci/Yv3dbt36ac0sj/yt67X1UaTSV3tHUt63RBM=; b=huz6PcDnccQbcVS630YKDIT6IxzA0gWuTAi9ig7vk0KqsKjSlidtTFxEuSVQlzEKGR HYykfb+C6dER/6nSd/vhRL/i2Il9N9wM3V5cmRmArfZmBqrVXEgjLBDjgFDH2JdQFdCS TUMv1Eg3Y7DygaigE80CUeq6eBqj9cVpprgNddmro7AS16OZTY9h03bUOVuZXrECO6AH tCXCNce8EVh/GmfTPF000gG0X371BeMRsypC0DZEbvGhLrg39rfI6kY36fRctir7b/uh 0Low2fAf67DDjgmYbZtDk1KOmqmo3V/gnSgYwPmNjhJGpShyJqRt5BWPFcPr/jf8eJaC p4BQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date; bh=/QliZci/Yv3dbt36ac0sj/yt67X1UaTSV3tHUt63RBM=; b=jDR/58JWgbOtYVzg9Fcy/nb49T9HagHOUJRsfNLDFeDlICJ1atSomEKu3vLOvrAtfs 6FySXbJ82EjTiW06dPwFYuRUdHVtv2hY5mHeQN9B6s68r8dY8VhHlr0JzdRJOFy9/0bo JjjyjYygwfeKh9vu/dmqeqeOls2T48fZMxhl5D0Pn0MNvAI7afbjQWmX63aaLAMebFMR 311fmQuwumRu0p186b2NYD8Kk22/OOkyF4Hi5rGFItoype+36htZel2RyP7k659S3U3V nhj8NPYQhY71+Z6EWgm+yqMwhOwMhzEGhqSiMgNe6pHZiCbxVQLZyCwEAI2EJGtrDxV1 Uh2Q== X-Gm-Message-State: ACgBeo0b8dG18qLSPIcnLVZhb5Ec3VJ2nhU6kvqDJ3VpMfJdjPEO2O9M X4bP9Z0nIj6NtQ9VBQJTw7oZpg== X-Google-Smtp-Source: AA6agR50IxnaizMYRUKtXRO74U3zxi4E+hmDnxttksiCeYywY3l6F6o1UYIVKRNexhSe5EdTlWWTww== X-Received: by 2002:a17:902:9b98:b0:176:70e1:1f86 with SMTP id y24-20020a1709029b9800b0017670e11f86mr1791835plp.60.1662134007715; Fri, 02 Sep 2022 08:53:27 -0700 (PDT) Received: from google.com (157.214.185.35.bc.googleusercontent.com. [35.185.214.157]) by smtp.gmail.com with ESMTPSA id g10-20020aa796aa000000b00537f029c94bsm1962428pfk.183.2022.09.02.08.53.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Sep 2022 08:53:26 -0700 (PDT) Date: Fri, 2 Sep 2022 15:53:23 +0000 From: Carlos Llamas To: syzbot Cc: akpm@linux-foundation.org, arve@android.com, brauner@kernel.org, gregkh@linuxfoundation.org, joel@joelfernandes.org, liam.howlett@oracle.com, linux-kernel@vger.kernel.org, maco@android.com, omosnace@redhat.com, surenb@google.com, syzkaller-bugs@googlegroups.com, tkjos@android.com Subject: Re: [syzbot] general protection fault in binder_alloc_new_buf_locked Message-ID: References: <000000000000ae694805e7b2bda3@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000000000000ae694805e7b2bda3@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 02, 2022 at 07:42:36AM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: b90cb1053190 Linux 6.0-rc3 > git tree: upstream > console+strace: https://syzkaller.appspot.com/x/log.txt?x=1719e383080000 > kernel config: https://syzkaller.appspot.com/x/.config?x=9c5c41fc03fda66f > dashboard link: https://syzkaller.appspot.com/bug?extid=ff47834028a51cf6f857 > compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11794975080000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1445c063080000 > > The issue was bisected to: > > commit 44e602b4e52f70f04620bbbf4fe46ecb40170bde > Author: Liam Howlett > Date: Wed Aug 10 16:02:25 2022 +0000 > > binder_alloc: add missing mmap_lock calls when using the VMA > Duplicate report, this time bisection worked though. #syz dup: general protection fault in binder_alloc_new_buf