Hello block maintainers/developers, This is a 31-day syzbot report for the block subsystem. All related reports/information can be found at: https://syzkaller.appspot.com/upstream/s/block During the period, 5 new issues were detected and 0 were fixed. In total, 46 issues are still open and 94 have already been fixed. Some of the still happening issues: Ref Crashes Repro Title <1> 59531 Yes possible deadlock in __submit_bio https://syzkaller.appspot.com/bug?extid=949ae54e95a2fab4cbb4 <2> 4822 Yes KMSAN: kernel-infoleak in filemap_read https://syzkaller.appspot.com/bug?extid=905d785c4923bea2c1db <3> 2964 Yes possible deadlock in blk_trace_setup https://syzkaller.appspot.com/bug?extid=0d8542c90a512dc95185 <4> 2822 Yes possible deadlock in loop_reconfigure_limits https://syzkaller.appspot.com/bug?extid=867b0179d31db9955876 <5> 2461 Yes INFO: task hung in bdev_release https://syzkaller.appspot.com/bug?extid=4da851837827326a7cd4 <6> 1865 Yes KASAN: slab-use-after-free Read in percpu_ref_put (2) https://syzkaller.appspot.com/bug?extid=905d719acdbd213bf67e <7> 1662 Yes INFO: task hung in blkdev_fallocate https://syzkaller.appspot.com/bug?extid=39b75c02b8be0a061bfc <8> 594 No INFO: task hung in bdev_open https://syzkaller.appspot.com/bug?extid=5c6179f2c4f1e111df11 <9> 345 No possible deadlock in loop_set_status https://syzkaller.appspot.com/bug?extid=9b145229d11aa73e4571 <10> 40 Yes possible deadlock in blk_mq_submit_bio https://syzkaller.appspot.com/bug?extid=5218c85078236fc46227 --- 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.