Hello fs maintainers/developers, This is a 31-day syzbot report for the fs subsystem. All related reports/information can be found at: https://syzkaller.appspot.com/upstream/s/fs During the period, 10 new issues were detected and 1 were fixed. In total, 93 issues are still open and 329 have been fixed so far. Some of the still happening issues: Ref Crashes Repro Title <1> 400 Yes BUG: sleeping function called from invalid context in bdev_getblk https://syzkaller.appspot.com/bug?extid=51c61e2b1259fcd64071 <2> 359 Yes BUG: sleeping function called from invalid context in __bread_gfp https://syzkaller.appspot.com/bug?extid=5869fb71f59eac925756 <3> 261 No KASAN: slab-use-after-free Read in __ext4_iget https://syzkaller.appspot.com/bug?extid=5407ecf3112f882d2ef3 <4> 178 Yes INFO: task hung in user_get_super (2) https://syzkaller.appspot.com/bug?extid=ba09f4a317431df6cddf <5> 54 Yes INFO: task hung in filename_create (4) https://syzkaller.appspot.com/bug?extid=72c5cf124089bc318016 <6> 44 Yes INFO: rcu detected stall in sys_clock_adjtime https://syzkaller.appspot.com/bug?extid=25b7addb06e92c482190 <7> 42 Yes UBSAN: shift-out-of-bounds in minix_statfs https://syzkaller.appspot.com/bug?extid=5ad0824204c7bf9b67f2 <8> 25 Yes INFO: task hung in synchronize_rcu (4) https://syzkaller.appspot.com/bug?extid=222aa26d0a5dbc2e84fe <9> 11 Yes KASAN: use-after-free Read in sysv_new_block https://syzkaller.appspot.com/bug?extid=eda782c229b243c648e9 <10> 9 Yes UBSAN: shift-out-of-bounds in befs_check_sb https://syzkaller.appspot.com/bug?extid=fc26c366038b54261e53 --- 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.