From: Oleg Nesterov <oleg@redhat.com>
To: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Jianlin Lv <Jianlin.Lv@arm.com>,
mingo@redhat.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] tracing: precise log info for kretprobe addr err
Date: Tue, 26 Jan 2021 21:20:59 +0100 [thread overview]
Message-ID: <20210126202058.GC12469@redhat.com> (raw)
In-Reply-To: <20210126131536.f6e3a737a7b948799084fa7a@kernel.org>
On 01/26, Masami Hiramatsu wrote:
>
> > >
> > > IOW, the "offset != 0" check removed by this patch is obviously wrong, right?
> > >
>
> No, not wrong. Even offset != 0, if the symbol exists in the kernel,
> kprobe_on_func_entry() will check it.
Yes, but unless I am totally confused... if kprobe_on_func_entry() returns false,
then trace_kprobe_create() should fail with BAD_RETPROBE even if offset == 0 ?
Oleg.
next prev parent reply other threads:[~2021-01-27 5:51 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-25 16:01 [PATCH v3] tracing: precise log info for kretprobe addr err Jianlin Lv
2021-01-25 18:19 ` Oleg Nesterov
2021-01-25 18:38 ` Steven Rostedt
2021-01-26 4:15 ` Masami Hiramatsu
2021-01-26 10:02 ` Jianlin Lv
2021-01-26 20:20 ` Oleg Nesterov [this message]
2021-01-26 20:43 ` Steven Rostedt
2021-01-26 21:17 ` Oleg Nesterov
2021-01-26 21:40 ` Steven Rostedt
2021-01-27 2:14 ` Masami Hiramatsu
2021-01-27 2:02 ` Masami Hiramatsu
2021-01-27 2:46 ` Jianlin Lv
2021-01-27 13:27 ` Masami Hiramatsu
2021-01-27 14:25 ` Jianlin Lv
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