Hello bluetooth maintainers/developers, This is a 31-day syzbot report for the bluetooth subsystem. All related reports/information can be found at: https://syzkaller.appspot.com/upstream/s/bluetooth During the period, 6 new issues were detected and 0 were fixed. In total, 58 issues are still open and 79 have already been fixed. Some of the still happening issues: Ref Crashes Repro Title <1> 27541 Yes KASAN: slab-use-after-free Read in l2cap_unregister_user https://syzkaller.appspot.com/bug?extid=14b6d57fb728e27ce23c <2> 5842 Yes WARNING in call_timer_fn https://syzkaller.appspot.com/bug?extid=6fb78d577e89e69602f9 <3> 943 Yes general protection fault in lock_sock_nested https://syzkaller.appspot.com/bug?extid=d3ccfb78a0dc16ffebe3 <4> 702 Yes general protection fault in skb_release_data (2) https://syzkaller.appspot.com/bug?extid=ccfa5775bc1bda21ddd1 <5> 242 Yes WARNING in hci_conn_timeout (2) https://syzkaller.appspot.com/bug?extid=fc4b5b2477d4ca272907 <6> 214 Yes KASAN: slab-use-after-free Read in force_devcd_write https://syzkaller.appspot.com/bug?extid=bc71245e56f06e3127b7 <7> 182 Yes WARNING: ODEBUG bug in hci_release_dev (2) https://syzkaller.appspot.com/bug?extid=b170dbf55520ebf5969a <8> 137 Yes KASAN: slab-use-after-free Read in l2cap_recv_frame https://syzkaller.appspot.com/bug?extid=5c915dc5dd417b83b348 <9> 132 No WARNING in l2cap_chan_del https://syzkaller.appspot.com/bug?extid=3272785b7a1fc9b510f6 <10> 115 Yes BUG: sleeping function called from invalid context in lock_sock_nested (3) https://syzkaller.appspot.com/bug?extid=55cd5225f71c5cff7f6f --- 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.