On Mon, 09 Sep 2024 01:12:20 -0700 syzbot <syzbot+list692d096cfc0c03673...@syzkaller.appspotmail.com> wrote:
> Hello trace maintainers/developers, > > This is a 31-day syzbot report for the trace subsystem. > All related reports/information can be found at: > https://syzkaller.appspot.com/upstream/s/trace > > During the period, 1 new issues were detected and 0 were fixed. > In total, 8 issues are still open and 37 have been fixed so far. > > Some of the still happening issues: > > Ref Crashes Repro Title > <1> 2278 Yes possible deadlock in console_flush_all (3) > https://syzkaller.appspot.com/bug?extid=18cfb7f63482af8641df This is artifically injected circuler lock dependency about the combination of eBPF + fault injection. - BPF test program traces sched_switch event. (under rq->lock) - fault inject injects a fault in BPF's strncpy_from_user. - this fault printk dump to the console.(to lock console_owner) To avoid this issue, use another event to test fault injection. > <2> 1023 Yes WARNING in format_decode (3) > https://syzkaller.appspot.com/bug?extid=e2c932aec5c8a6e1d31c This seems also be caused by bpf test program. > <3> 31 Yes INFO: task hung in blk_trace_ioctl (4) > https://syzkaller.appspot.com/bug?extid=ed812ed461471ab17a0c This is a bug in blk_trace. > <4> 15 Yes WARNING in bpf_get_stack_raw_tp > https://syzkaller.appspot.com/bug?extid=ce35de20ed6652f60652 This may be a bpf issue. > <5> 11 Yes WARNING in get_probe_ref > https://syzkaller.appspot.com/bug?extid=8672dcb9d10011c0a160 This is a bug in blk_trace. It seems blk_trace does not check input parameters of ioctl correctly. Thank you, > > --- > 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 syzkal...@googlegroups.com. > > 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. -- Masami Hiramatsu (Google) <mhira...@kernel.org>
