From: Jiri Olsa <olsajiri@gmail.com>
To: Martin KaFai Lau <martin.lau@linux.dev>
Cc: Ilya Leoshkevich <iii@linux.ibm.com>, bpf <bpf@vger.kernel.org>
Subject: Re: [TEST FAILURE] bpf: s390: missed/kprobe_recursion
Date: Fri, 24 Jan 2025 12:23:35 +0100 [thread overview]
Message-ID: <Z5N4N6MUMt8_EwGS@krava> (raw)
In-Reply-To: <3c841f0a-772a-406c-9888-f8e71826daff@linux.dev>
On Thu, Jan 23, 2025 at 02:32:38PM -0800, Martin KaFai Lau wrote:
> Hi Jiri,
>
> The "missed/kprobe_recursion" fails consistently on s390. It seems to start
> failing after the recent bpf and bpf-next tree ffwd.
>
> An example:
> https://github.com/kernel-patches/bpf/actions/runs/12934431612/job/36076956920
>
> Can you help to take a look?
>
> afaict, it only happens on s390 so far, so cc IIya if there is any recent
> change that may ring the bell.
hi,
I need to check more but I wonder it's the:
7495e179b478 s390/tracing: Enable HAVE_FTRACE_GRAPH_FUNC
which seems to add recursion check and bail out before we have
a chance to trigger it in bpf code
jirka
next prev parent reply other threads:[~2025-01-24 11:23 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-23 22:32 [TEST FAILURE] bpf: s390: missed/kprobe_recursion Martin KaFai Lau
2025-01-24 11:23 ` Jiri Olsa [this message]
2025-01-24 15:41 ` Jiri Olsa
2025-01-26 14:40 ` Masami Hiramatsu
2025-01-26 22:06 ` Jiri Olsa
2025-01-27 19:09 ` Andrii Nakryiko
2025-01-28 4:57 ` Masami Hiramatsu
-- strict thread matches above, loose matches on Subject: below --
2025-01-23 22:32 Martin KaFai Lau
2025-01-23 22:44 ` Martin KaFai Lau
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