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Wed, 27 Oct 2021 00:08:06 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzf37l5gdvKcKdjqCrZo/kpOfCDswUMNaEnj2mAOufEC32VQVVHsjAg4MKPQSIlTnjZWd1EGQ== X-Received: by 2002:a5d:494d:: with SMTP id r13mr38285112wrs.222.1635318486297; Wed, 27 Oct 2021 00:08:06 -0700 (PDT) Received: from [192.168.100.42] ([82.142.14.190]) by smtp.gmail.com with ESMTPSA id e17sm7721173wrx.18.2021.10.27.00.08.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 27 Oct 2021 00:08:05 -0700 (PDT) Message-ID: <6c7e48b9-5204-352f-18e7-26b13d70f966@redhat.com> Date: Wed, 27 Oct 2021 09:08:04 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: [syzbot] KASAN: slab-out-of-bounds Read in copy_data Content-Language: en-US To: Eric Dumazet , syzbot , davem@davemloft.net, herbert@gondor.apana.org.au, jiri@nvidia.com, kuba@kernel.org, leonro@nvidia.com, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, mpm@selenic.com, mst@redhat.com, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <000000000000a4cd2105cf441e76@google.com> From: Laurent Vivier In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 27/10/2021 00:34, Eric Dumazet wrote: > > > On 10/26/21 9:39 AM, syzbot wrote: >> Hello, >> >> syzbot found the following issue on: >> >> HEAD commit: 9ae1fbdeabd3 Add linux-next specific files for 20211025 >> git tree: linux-next >> console output: https://syzkaller.appspot.com/x/log.txt?x=1331363cb00000 >> kernel config: https://syzkaller.appspot.com/x/.config?x=aeb17e42bc109064 >> dashboard link: https://syzkaller.appspot.com/bug?extid=b86736b5935e0d25b446 >> 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=116ce954b00000 >> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=132fcf62b00000 >> >> The issue was bisected to: >> >> commit 22849b5ea5952d853547cc5e0651f34a246b2a4f >> Author: Leon Romanovsky >> Date: Thu Oct 21 14:16:14 2021 +0000 >> >> devlink: Remove not-executed trap policer notifications > > More likely this came with > > caaf2874ba27b92bca6f0298bf88bad94067ec37 hwrng: virtio - don't waste entropy > I'm going to have a look. Thanks, Laurent