Hello bpf maintainers/developers, This is a 31-day syzbot report for the bpf subsystem. All related reports/information can be found at: https://syzkaller.appspot.com/upstream/s/bpf During the period, 7 new issues were detected and 0 were fixed. In total, 43 issues are still open and 272 have been fixed so far. Some of the still happening issues: Ref Crashes Repro Title <1> 20393 Yes possible deadlock in trie_delete_elem https://syzkaller.appspot.com/bug?extid=9d95beb2a3c260622518 <2> 1658 Yes possible deadlock in __bpf_ringbuf_reserve https://syzkaller.appspot.com/bug?extid=850aaf14624dc0c6d366 <3> 247 Yes KMSAN: uninit-value in ___bpf_prog_run (4) https://syzkaller.appspot.com/bug?extid=853242d9c9917165d791 <4> 159 Yes possible deadlock in __queue_map_get https://syzkaller.appspot.com/bug?extid=8bdfc2c53fb2b63e1871 <5> 135 No possible deadlock in trie_update_elem https://syzkaller.appspot.com/bug?extid=ea624e536fee669a05cf <6> 54 Yes possible deadlock in queue_stack_map_push_elem https://syzkaller.appspot.com/bug?extid=252bc5c744d0bba917e1 <7> 47 Yes possible deadlock in __stack_map_get https://syzkaller.appspot.com/bug?extid=dddd99ae26c656485d89 <8> 43 Yes INFO: rcu detected stall in sys_bpf (9) https://syzkaller.appspot.com/bug?extid=4fe86fa6110c580ea1f5 <9> 18 Yes INFO: rcu detected stall in sys_syslog (2) https://syzkaller.appspot.com/bug?extid=269f9ad9bc32451d5fb5 <10> 11 Yes UBSAN: array-index-out-of-bounds in bpf_prog_select_runtime https://syzkaller.appspot.com/bug?extid=d2a2c639d03ac200a4f1 --- 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.