Received: by 2002:a05:6a10:1a4d:0:0:0:0 with SMTP id nk13csp1681309pxb; Wed, 2 Feb 2022 10:05:37 -0800 (PST) X-Google-Smtp-Source: ABdhPJwZfAyMHjfsVne2srPHidhlQzSfm+Q6KPb3vD/5V8F0h5rq4rClEAzWifAVgr6xtJESBiL0 X-Received: by 2002:a17:90a:f0ce:: with SMTP id fa14mr9351019pjb.212.1643825136958; Wed, 02 Feb 2022 10:05:36 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1643825136; cv=none; d=google.com; s=arc-20160816; b=l62QKoragQed3k1ONwhPGJAhTUC6JHzpKAL37kIubOe9AV+EmWKI8Z5oMiqPcD6/8w DsLsWlGjijgJSlku3g67GY6k8ZM0dvcxnCGhJk+RcXA2FwAqj9O/FMlMw2rSG3XSl5Hp MH5ViYrMdav5KZGz+QHBjY7XTzIR/hT5OCNLocvlR7lUaSN751NQVC/fJ6G8i60m65ne FcYqIvwwZCNpqiCdOZ8AzmaXOtTkn6+TyRp2iEnyfoXX1T+b82/AvRP8aCglcHWsj+v2 IPUJ5TX7KL0JvasoDFHpIFd3kV+gwrVHLUJyZjoV9LzVXgYKMlLGjAFuhkjha7D65naB wbXg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :in-reply-to:mime-version:user-agent:date:message-id:from:references :to:subject; bh=8AkLpMONoQn1BPnd/xRvBJrF16+R3ZVPi/85kgLpQDs=; b=VE6UeBbHUzoOKtrTqXquW8HfaT/5NFMMFm1eZ8MOI7cymuDIH2KsSc/nnpXXai5LU/ 6UBAz/6ihG0jrdgjOZ8eLDbsaaRko3Zwuib0zmqMa6mnHig48VcPzZUgjkarCVO1tO4X 1JoH4Rr5Od3H0Q8leylv0ljWdc+mbYPRmu+tGPw3GNYcqnfL928sv1fcpjk3HTqsh9vb lT9BJzPmLBjcDkJLduopZBfD9YevE2NIiU0WiKPtOfZjyXPlD226Ltp7bVe/oeABsvxf zhGu8eexrL5MD44elTFozJ57n2GPLCJ6pWP5bo4TevFTEyB6yVKo2X8OH2QVdd6IXdTE BuFw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id j6si21678759plx.362.2022.02.02.10.05.23; Wed, 02 Feb 2022 10:05:36 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344091AbiBBMUf (ORCPT + 99 others); Wed, 2 Feb 2022 07:20:35 -0500 Received: from www62.your-server.de ([213.133.104.62]:55950 "EHLO www62.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231400AbiBBMUf (ORCPT ); Wed, 2 Feb 2022 07:20:35 -0500 Received: from sslproxy06.your-server.de ([78.46.172.3]) by www62.your-server.de with esmtpsa (TLSv1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.92.3) (envelope-from ) id 1nFEch-000GG3-PP; Wed, 02 Feb 2022 13:20:31 +0100 Received: from [85.1.206.226] (helo=linux.home) by sslproxy06.your-server.de with esmtpsa (TLSv1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nFEch-000WiW-Bx; Wed, 02 Feb 2022 13:20:31 +0100 Subject: Re: [syzbot] KASAN: vmalloc-out-of-bounds Write in ringbuf_map_alloc To: syzbot , andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, davem@davemloft.net, hotforest@gmail.com, houtao1@huawei.com, john.fastabend@gmail.com, kafai@fb.com, kpsingh@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com References: <000000000000b559f905d707ea15@google.com> From: Daniel Borkmann Message-ID: <8d1abb6f-17c3-4323-d56b-a910092e9989@iogearbox.net> Date: Wed, 2 Feb 2022 13:20:30 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <000000000000b559f905d707ea15@google.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Authenticated-Sender: daniel@iogearbox.net X-Virus-Scanned: Clear (ClamAV 0.103.5/26441/Wed Feb 2 10:43:13 2022) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2/2/22 1:11 PM, syzbot wrote: > syzbot has found a reproducer for the following issue on: > > HEAD commit: 6abab1b81b65 Add linux-next specific files for 20220202 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=13f4b900700000 > kernel config: https://syzkaller.appspot.com/x/.config?x=b8d8750556896349 > dashboard link: https://syzkaller.appspot.com/bug?extid=5ad567a418794b9b5983 > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1450d9f0700000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=130ef35bb00000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+5ad567a418794b9b5983@syzkaller.appspotmail.com #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/dborkman/bpf.git pr/rb-vmap