linux-kernel - Re: [PATCH] tracing/probe: Fix bpf_task_fd

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Date:   Tue, 9 Jun 2020 11:18:57 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     Jean-Philippe Brucker <jean-philippe@...aro.org>,
        LKML <linux-kernel@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>
Subject: Re: [PATCH] tracing/probe: Fix bpf_task_fd_query() for kprobes and uprobes

On Tue, Jun 9, 2020 at 12:12 AM Masami Hiramatsu <mhiramat@...nel.org> wrote:
>
> On Mon,  8 Jun 2020 14:45:32 +0200
> Jean-Philippe Brucker <jean-philippe@...aro.org> wrote:
>
> > Commit 60d53e2c3b75 ("tracing/probe: Split trace_event related data from
> > trace_probe") removed the trace_[ku]probe structure from the
> > trace_event_call->data pointer. As bpf_get_[ku]probe_info() were
> > forgotten in that change, fix them now. These functions are currently
> > only used by the bpf_task_fd_query() syscall handler to collect
> > information about a perf event.
> >
>
> Oops, good catch!
>
> Acked-by: Masami Hiramatsu <mhiramat@...nel.org>
>
>
> > Fixes: 60d53e2c3b75 ("tracing/probe: Split trace_event related data from trace_probe")
> > Signed-off-by: Jean-Philippe Brucker <jean-philippe@...aro.org>
>
> Cc: stable@...r.kernel.org

Applied to bpf tree. Thanks