linux-kernel - Re: [PATCH v2] kretprobe: avoid re-registration of the same kretprobe earlier

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Message-ID: <20210129112932.41e56f4f@gandalf.local.home>
Date:   Fri, 29 Jan 2021 11:29:32 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     Wang ShaoBo <bobo.shaobowang@...wei.com>,
        <cj.chengjian@...wei.com>, <huawei.libin@...wei.com>,
        <xiexiuqi@...wei.com>, <naveen.n.rao@...ux.ibm.com>,
        <anil.s.keshavamurthy@...el.com>, <davem@...emloft.net>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] kretprobe: avoid re-registration of the same
 kretprobe earlier

On Fri, 29 Jan 2021 22:29:47 +0900
Masami Hiramatsu <mhiramat@...nel.org> wrote:

> I'll send a patch over this to replace those check with WARN_ON() since
> it's a software bug and should be fixed.

Please use WARN_ON_ONCE()

Thanks!

-- Steve