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, 2 new issues were detected and 0 were fixed. In total, 41 issues are still open and 118 have been fixed so far. Some of the still happening issues: Ref Crashes Repro Title <1> 51606 Yes possible deadlock in console_flush_all (2) https://syzkaller.appspot.com/bug?extid=f78380e4eae53c64125c <2> 10182 Yes KASAN: slab-out-of-bounds Read in generic_perform_write https://syzkaller.appspot.com/bug?extid=4a2376bc62e59406c414 <3> 5928 Yes WARNING: locking bug in ext4_move_extents https://syzkaller.appspot.com/bug?extid=7f4a6f7f7051474e40ad <4> 470 Yes WARNING: locking bug in __ext4_ioctl https://syzkaller.appspot.com/bug?extid=a537ff48a9cb940d314c <5> 207 Yes WARNING: locking bug in ext4_ioctl https://syzkaller.appspot.com/bug?extid=a3c8e9ac9f9d77240afd <6> 150 No possible deadlock in evict (3) https://syzkaller.appspot.com/bug?extid=dd426ae4af71f1e74729 <7> 101 Yes INFO: task hung in sync_inodes_sb (5) https://syzkaller.appspot.com/bug?extid=30476ec1b6dc84471133 <8> 30 Yes kernel BUG in ext4_write_inline_data_end https://syzkaller.appspot.com/bug?extid=198e7455f3a4f38b838a <9> 16 No possible deadlock in start_this_handle (4) https://syzkaller.appspot.com/bug?extid=cf0b4280f19be4031cf2 <10> 13 Yes INFO: rcu detected stall in sys_unlink (3) https://syzkaller.appspot.com/bug?extid=c4f62ba28cc1290de764 --- 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.