Re: [syzbot] Monthly trace report (Oct 2024)

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On Fri, 11 Oct 2024 08:25:29 -0700
syzbot <syzbot+list3bf21e6ac0139f8d008d@xxxxxxxxxxxxxxxxxxxxxxxxx> 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, 10 issues are still open and 38 have been fixed so far.
> 
> Some of the still happening issues:
> 
> Ref Crashes Repro Title
> <1> 34      Yes   INFO: task hung in blk_trace_ioctl (4)
>                   https://syzkaller.appspot.com/bug?extid=ed812ed461471ab17a0c

If you check the maintainers file, blktrace.c has:

BLOCK LAYER
M:      Jens Axboe <axboe@xxxxxxxxx>
L:      linux-block@xxxxxxxxxxxxxxx



> <2> 32      Yes   WARNING in bpf_get_stack_raw_tp
>                   https://syzkaller.appspot.com/bug?extid=ce35de20ed6652f60652

bpf_trace.c has:

M:      Alexei Starovoitov <ast@xxxxxxxxxx>
M:      Daniel Borkmann <daniel@xxxxxxxxxxxxx>
M:      Andrii Nakryiko <andrii@xxxxxxxxxx>
R:      Martin KaFai Lau <martin.lau@xxxxxxxxx>
R:      Eduard Zingerman <eddyz87@xxxxxxxxx>
R:      Song Liu <song@xxxxxxxxxx>
R:      Yonghong Song <yonghong.song@xxxxxxxxx>
R:      John Fastabend <john.fastabend@xxxxxxxxx>
R:      KP Singh <kpsingh@xxxxxxxxxx>
R:      Stanislav Fomichev <sdf@xxxxxxxxxxx>
R:      Hao Luo <haoluo@xxxxxxxxxx>
R:      Jiri Olsa <jolsa@xxxxxxxxxx>
L:      bpf@xxxxxxxxxxxxxxx

> <3> 13      Yes   WARNING in get_probe_ref
>                   https://syzkaller.appspot.com/bug?extid=8672dcb9d10011c0a160
> <4> 6       Yes   INFO: task hung in blk_trace_remove (2)
>                   https://syzkaller.appspot.com/bug?extid=2373f6be3e6de4f92562
> <5> 4       Yes   possible deadlock in __mod_timer (4)
>                   https://syzkaller.appspot.com/bug?extid=83a876aef81c9a485ae8

None of these look like they are tracing infrastructure related.

-- Steve


> 
> ---
> 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:
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> 
> To change bug's subsystems, reply with:
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> 
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