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Mon, 20 Jan 2020 17:42:50 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id 00KHcveQ161458; Mon, 20 Jan 2020 17:42:50 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userp3030.oracle.com with ESMTP id 2xmbg8syfn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 20 Jan 2020 17:42:50 +0000 Received: from abhmp0001.oracle.com (abhmp0001.oracle.com [141.146.116.7]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 00KHgMnn028408; Mon, 20 Jan 2020 17:42:25 GMT Received: from kadam (/129.205.23.165) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 20 Jan 2020 09:42:22 -0800 Date: Mon, 20 Jan 2020 20:46:15 +0300 From: Dan Carpenter To: Christian Brauner Cc: syzbot , a@unstable.cc, akpm@linux-foundation.org, allison@lohutok.net, arnd@arndb.de, axboe@kernel.dk, b.a.t.m.a.n@lists.open-mesh.org, bp@alien8.de, catalin.marinas@arm.com, chris@zankel.net, christian@brauner.io, coreteam@netfilter.org, davem@davemloft.net, elena.reshetova@intel.com, florent.fourcot@wifirst.fr, fw@strlen.de, geert@linux-m68k.org, hare@suse.com, heiko.carstens@de.ibm.com, hpa@zytor.com, info@metux.net, jcmvbkbc@gmail.com, jeremy@azazel.net, johannes.berg@intel.com, kadlec@netfilter.org, linux-api@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-xtensa@linux-xtensa.org, linux@armlinux.org.uk, mareklindner@neomailbox.ch, mingo@redhat.com, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, peterz@infradead.org, sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, viro@zeniv.linux.org.uk, will@kernel.org, x86@kernel.org Subject: Re: KASAN: slab-out-of-bounds Read in bitmap_ip_ext_cleanup Message-ID: <20200120174615.GE21151@kadam> References: <000000000000bdb5b2059c865f5c@google.com> <000000000000c795fa059c884c21@google.com> <20200120131930.pbhbsrm4bk4lq3d7@wittgenstein> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20200120131930.pbhbsrm4bk4lq3d7@wittgenstein> User-Agent: Mutt/1.9.4 (2018-02-28) X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9506 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-2001200149 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9506 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-2001200149 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Mon, Jan 20, 2020 at 02:19:31PM +0100, Christian Brauner wrote: > On Sun, Jan 19, 2020 at 05:35:01PM -0800, syzbot wrote: > > syzbot has bisected this bug to: > > > > commit d68dbb0c9ac8b1ff52eb09aa58ce6358400fa939 > > Author: Christian Brauner > > Date: Thu Jun 20 23:26:35 2019 +0000 > > > > arch: handle arches who do not yet define clone3 > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1456fed1e00000 > > start commit: 09d4f10a net: sched: act_ctinfo: fix memory leak > > git tree: net > > final crash: https://syzkaller.appspot.com/x/report.txt?x=1656fed1e00000 > > console output: https://syzkaller.appspot.com/x/log.txt?x=1256fed1e00000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=7e89bd00623fe71e > > dashboard link: https://syzkaller.appspot.com/bug?extid=6491ea8f6dddbf04930e > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=141af959e00000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1067fa85e00000 > > > > Reported-by: syzbot+6491ea8f6dddbf04930e@syzkaller.appspotmail.com > > Fixes: d68dbb0c9ac8 ("arch: handle arches who do not yet define clone3") > > > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > > This bisect seems bogus. > Yeah. József Kadlecsik already fixed the bug in a different thread. It was reported as seven different bugs so there was a bunch of threads for it. regards, dan carpenter