linux-kernel - Re: [PATCH] tracing: Fix possible crash in ftrace_free_ftrace

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Message-ID: <6689f8e3-b61b-9bb1-0334-a3e5f52df450@gnuweeb.org>
Date:   Mon, 9 May 2022 14:34:28 +0700
From:   Ammar Faizi <ammarfaizi2@...weeb.org>
To:     Jeff Xie <xiehuan09@...il.com>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Tom Zanussi <zanussi@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] tracing: Fix possible crash in ftrace_free_ftrace_ops()

On 5/9/22 8:33 AM, Jeff Xie wrote:
> I am so sorry to bother you, this may be an invalid patch, kfree can
> return directly from null. ;-)

Yeah, kfree(NULL) is a valid call. There's no potential crash here.

-- 
Ammar Faizi