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Thu, 7 Nov 2024 17:14:49 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id GEWRMIn1LGfRGAAAD6G6ig (envelope-from ); Thu, 07 Nov 2024 17:14:49 +0000 Received: by quack3.suse.cz (Postfix, from userid 1000) id 6D56CA08FE; Thu, 7 Nov 2024 18:14:41 +0100 (CET) Date: Thu, 7 Nov 2024 18:14:41 +0100 From: Jan Kara To: syzbot Cc: adilger.kernel@dilger.ca, adilger@dilger.ca, eadavis@qq.com, hdanton@sina.com, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tytso@mit.edu, wojciech.gladysz@infogain.com Subject: Re: [syzbot] [ext4?] possible deadlock in ext4_xattr_inode_iget (3) Message-ID: <20241107171441.he2rix37qopi6ane@quack3> References: <000000000000163e1406152c6877@google.com> <6726ae7b.050a0220.35b515.018a.GAE@google.com> Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <6726ae7b.050a0220.35b515.018a.GAE@google.com> X-Spam-Score: -1.30 X-Spamd-Result: default: False [-1.30 / 50.00]; BAYES_HAM(-3.00)[99.99%]; SUSPICIOUS_RECIPS(1.50)[]; URI_HIDDEN_PATH(1.00)[https://syzkaller.appspot.com/x/.config?x=1a07d5da4eb21586]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_RHS_NOT_FQDN(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; FREEMAIL_ENVRCPT(0.00)[qq.com,sina.com]; ARC_NA(0.00)[]; TAGGED_RCPT(0.00)[ee72b9a7aad1e5a77c5c]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; MISSING_XM_UA(0.00)[]; RCPT_COUNT_SEVEN(0.00)[11]; FUZZY_BLOCKED(0.00)[rspamd.com]; TO_DN_SOME(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; FREEMAIL_CC(0.00)[dilger.ca,qq.com,sina.com,vger.kernel.org,googlegroups.com,mit.edu,infogain.com]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[infogain.com:email,syzkaller.appspot.com:url,imap1.dmz-prg2.suse.org:helo]; RCVD_TLS_LAST(0.00)[]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; SUBJECT_HAS_QUESTION(0.00)[] X-Spam-Flag: NO X-Spam-Level: On Sat 02-11-24 15:58:03, syzbot wrote: > syzbot suspects this issue was fixed by commit: > > commit d1bc560e9a9c78d0b2314692847fc8661e0aeb99 > Author: Wojciech Gładysz > Date: Thu Aug 1 14:38:27 2024 +0000 > > ext4: nested locking for xattr inode > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1245f55f980000 > start commit: fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel.. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=1a07d5da4eb21586 > dashboard link: https://syzkaller.appspot.com/bug?extid=ee72b9a7aad1e5a77c5c > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12407f45180000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=140d9db1180000 > > If the result looks correct, please mark the issue as fixed by replying with: > Makes sense: #syz fix: ext4: nested locking for xattr inode Honza -- Jan Kara SUSE Labs, CR