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Wed, 9 Feb 2022 06:43:39 +0000 (GMT) Received: from localhost (unknown [9.43.124.244]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 9 Feb 2022 06:43:38 +0000 (GMT) Date: Wed, 9 Feb 2022 12:13:38 +0530 From: Ritesh Harjani To: syzbot Cc: jack@suse.com, jack@suse.cz, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tytso@mit.edu Subject: Re: [syzbot] KASAN: use-after-free Read in jbd2_journal_wait_updates Message-ID: <20220209064338.vjhlaaav5dqb2hah@riteshh-domain> References: <00000000000040c94205d78125af@google.com> <00000000000040b9d905d78e23ee@google.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00000000000040b9d905d78e23ee@google.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: Frvx_ob8aDwvqi30tsfaj1ukMDePQumB X-Proofpoint-ORIG-GUID: Frvx_ob8aDwvqi30tsfaj1ukMDePQumB X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-02-09_03,2022-02-07_02,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=714 malwarescore=0 spamscore=0 bulkscore=0 clxscore=1011 adultscore=0 phishscore=0 mlxscore=0 suspectscore=0 priorityscore=1501 lowpriorityscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2201110000 definitions=main-2202090046 X-Spam-Status: No, score=0.6 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RDNS_NONE, SORTED_RECIPS,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 22/02/08 08:19PM, syzbot wrote: > syzbot has found a reproducer for the following issue on: > > HEAD commit: ef6b35306dd8 Add linux-next specific files for 20220204 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=1390be28700000 > kernel config: https://syzkaller.appspot.com/x/.config?x=e0431e0b00810b4f > dashboard link: https://syzkaller.appspot.com/bug?extid=afa2ca5171d93e44b348 > 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=133db2b4700000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17beb4a4700000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+afa2ca5171d93e44b348@syzkaller.appspotmail.com > #syz test: https://github.com/riteshharjani/linux.git jbd2-kill-t-handle-lock