Hello ext4 maintainers/developers, This is a 31-day syzbot report for the ext4 subsystem. All related reports/information can be found at: https://syzkaller.appspot.com/upstream/s/ext4 During the period, 8 new issues were detected and 0 were fixed. In total, 38 issues are still open and 134 have been fixed so far. Some of the still happening issues: Ref Crashes Repro Title <1> 9744 Yes WARNING: locking bug in ext4_move_extents https://syzkaller.appspot.com/bug?extid=7f4a6f7f7051474e40ad <2> 767 Yes WARNING: locking bug in __ext4_ioctl https://syzkaller.appspot.com/bug?extid=a537ff48a9cb940d314c <3> 547 Yes WARNING: locking bug in ext4_ioctl https://syzkaller.appspot.com/bug?extid=a3c8e9ac9f9d77240afd <4> 491 Yes INFO: task hung in sync_inodes_sb (5) https://syzkaller.appspot.com/bug?extid=30476ec1b6dc84471133 <5> 452 No possible deadlock in evict (3) https://syzkaller.appspot.com/bug?extid=dd426ae4af71f1e74729 <6> 265 Yes KMSAN: uninit-value in ext4_inlinedir_to_tree https://syzkaller.appspot.com/bug?extid=eaba5abe296837a640c0 <7> 248 Yes WARNING in __fortify_report https://syzkaller.appspot.com/bug?extid=50835f73143cc2905b9e <8> 226 No possible deadlock in __ext4_mark_inode_dirty (3) https://syzkaller.appspot.com/bug?extid=72c7e5a0d9f5901e864e <9> 155 Yes INFO: task hung in jbd2_journal_commit_transaction (5) https://syzkaller.appspot.com/bug?extid=3071bdd0a9953bc0d177 <10> 32 Yes kernel BUG in ext4_write_inline_data_end (2) https://syzkaller.appspot.com/bug?extid=0c89d865531d053abb2d --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. To disable reminders for individual bugs, reply with the following command: #syz set <Ref> no-reminders To change bug's subsystems, reply with: #syz set <Ref> subsystems: new-subsystem You may send multiple commands in a single email message.