From: Masami Hiramatsu <mhiramat@kernel•org>
To: "Steven Rostedt (VMware)" <rostedt@goodmis•org>
Cc: "Naveen N. Rao" <naveen.n.rao@linux•vnet.ibm.com>,
Masami Hiramatsu <mhiramat@kernel•org>,
Ananth N Mavinakayanahalli <ananth@linux•vnet.ibm.com>,
Ingo Molnar <mingo@redhat•com>,
Michael Ellerman <mpe@ellerman•id.au>,
Arnaldo Carvalho de Melo <acme@kernel•org>,
linux-kernel@vger•kernel.org, linuxppc-dev@lists•ozlabs.org
Subject: Re: [PATCH v2 3.5/5] trace/kprobes: Add back warning about offset in return probes
Date: Tue, 28 Feb 2017 09:01:52 +0900 [thread overview]
Message-ID: <20170228090152.77bd628efd295d66af852b58@kernel.org> (raw)
In-Reply-To: <20170227115204.00f92846@gandalf.local.home>
On Mon, 27 Feb 2017 11:52:04 -0500
"Steven Rostedt (VMware)" <rostedt@goodmis•org> wrote:
> Let's not remove the warning about offsets and return probes when the
> offset is invalid.
Agreed, This looks good to me.
Acked-by: Masami Hiramatsu <mhiramat@kernel•org>
Thanks!
>
> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis•org>
> ---
> diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
> index 3f4f788..f626235 100644
> --- a/kernel/trace/trace_kprobe.c
> +++ b/kernel/trace/trace_kprobe.c
> @@ -695,6 +695,11 @@ static int create_trace_kprobe(int argc, char **argv)
> pr_info("Failed to parse symbol.\n");
> return ret;
> }
> + if (offset && is_return &&
> + !arch_function_offset_within_entry(offset)) {
> + pr_info("Given offset is not valid for return probe.\n");
> + return -EINVAL;
> + }
> }
> argc -= 2; argv += 2;
>
--
Masami Hiramatsu <mhiramat@kernel•org>
next prev parent reply other threads:[~2017-02-28 0:02 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-22 13:53 [PATCH v2 0/5] kretprobe fixes Naveen N. Rao
2017-02-22 13:53 ` [PATCH v2 1/5] kretprobes: ensure probe location is at function entry Naveen N. Rao
2017-02-22 13:53 ` [PATCH v2 2/5] powerpc: kretprobes: override default function entry offset Naveen N. Rao
2017-02-24 19:57 ` Arnaldo Carvalho de Melo
2017-02-27 12:56 ` Michael Ellerman
2017-02-25 2:45 ` Ananth N Mavinakayanahalli
2017-02-22 13:53 ` [PATCH v2 3/5] trace/kprobes: allow return probes with offsets and absolute addresses Naveen N. Rao
2017-02-27 16:32 ` Steven Rostedt
2017-02-27 16:52 ` [PATCH v2 3.5/5] trace/kprobes: Add back warning about offset in return probes Steven Rostedt (VMware)
2017-02-28 0:01 ` Masami Hiramatsu [this message]
2017-03-01 15:16 ` Naveen N. Rao
2017-02-22 13:53 ` [PATCH v2 4/5] perf: kretprobes: offset from reloc_sym if kernel supports it Naveen N. Rao
2017-02-23 9:10 ` Masami Hiramatsu
2017-02-23 11:37 ` [PATCH v3 1/2] perf: probe: generalize probe event file open routine Naveen N. Rao
2017-02-24 16:46 ` Masami Hiramatsu
2017-02-24 20:07 ` Arnaldo Carvalho de Melo
2017-03-01 15:12 ` Naveen N. Rao
2017-02-23 11:37 ` [PATCH v3 2/2] perf: kretprobes: offset from reloc_sym if kernel supports it Naveen N. Rao
2017-02-24 17:12 ` Masami Hiramatsu
2017-03-01 15:11 ` Naveen N. Rao
2017-02-23 19:16 ` [PATCH v2 4/5] " Naveen N. Rao
2017-02-24 17:29 ` Masami Hiramatsu
2017-02-24 20:11 ` Arnaldo Carvalho de Melo
2017-02-24 23:55 ` Masami Hiramatsu
2017-03-01 15:14 ` Naveen N. Rao
2017-03-02 17:55 ` Naveen N. Rao
2017-03-02 17:55 ` [PATCH v4 1/3] perf: probe: factor out the ftrace README scanning Naveen N. Rao
2017-03-04 0:09 ` Masami Hiramatsu
2017-03-07 20:45 ` Steven Rostedt
2017-03-02 17:55 ` [PATCH v4 2/3] perf: kretprobes: offset from reloc_sym if kernel supports it Naveen N. Rao
2017-03-04 0:49 ` Masami Hiramatsu
2017-03-04 2:35 ` Masami Hiramatsu
2017-03-04 2:38 ` Masami Hiramatsu
2017-03-04 4:34 ` Masami Hiramatsu
2017-03-06 16:20 ` Naveen N. Rao
2017-03-06 17:49 ` Naveen N. Rao
2017-03-06 21:06 ` Masami Hiramatsu
2017-03-07 10:47 ` [PATCH v4 2/3] perf: kretprobes: offset from reloc_sym if kernel Naveen N. Rao
2017-03-07 10:47 ` [RESEND PATCH 1/6] trace/kprobes: fix check for kretprobe offset within function entry Naveen N. Rao
2017-03-07 20:47 ` Steven Rostedt
2017-03-08 8:01 ` Naveen N. Rao
2017-03-07 10:47 ` [RESEND PATCH 2/6] powerpc: kretprobes: override default function entry offset Naveen N. Rao
2017-03-07 10:47 ` [RESEND PATCH 3/6] perf: probe: factor out the ftrace README scanning Naveen N. Rao
2017-03-07 10:47 ` [RESEND PATCH 4/6] perf: kretprobes: offset from reloc_sym if kernel supports it Naveen N. Rao
2017-03-07 10:47 ` [PATCH 5/6] perf: probes: move ftrace README parsing logic into trace-event-parse.c Naveen N. Rao
2017-03-07 14:03 ` Masami Hiramatsu
2017-03-07 14:29 ` Naveen N. Rao
2017-03-07 15:51 ` Masami Hiramatsu
2017-03-07 16:31 ` Naveen N. Rao
2017-03-07 10:47 ` [RESEND PATCH 6/6] perf: powerpc: choose local entry point with kretprobes Naveen N. Rao
2017-03-07 16:49 ` [PATCH v2 " Naveen N. Rao
2017-03-06 15:04 ` [PATCH v4 2/3] perf: kretprobes: offset from reloc_sym if kernel supports it Naveen N. Rao
2017-03-06 21:14 ` Masami Hiramatsu
2017-03-02 17:55 ` [PATCH v4 3/3] perf: powerpc: choose local entry point with kretprobes Naveen N. Rao
2017-03-04 0:50 ` Masami Hiramatsu
2017-03-02 19:06 ` [PATCH v2 4/5] perf: kretprobes: offset from reloc_sym if kernel supports it Arnaldo Carvalho de Melo
2017-02-22 13:53 ` [PATCH v2 5/5] perf: powerpc: choose local entry point with kretprobes Naveen N. Rao
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