linux-kernel - Re: [RFC PATCH 18/32] function_graph: Fix to initalize ftrace_ops for fgraph with ftrace_graph

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20231106220735.5e218484@gandalf.local.home>
Date:   Mon, 6 Nov 2023 22:07:35 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
Cc:     Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Florent Revest <revest@...omium.org>,
        linux-trace-kernel@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        bpf <bpf@...r.kernel.org>, Sven Schnelle <svens@...ux.ibm.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Alan Maguire <alan.maguire@...cle.com>,
        Mark Rutland <mark.rutland@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Guo Ren <guoren@...nel.org>
Subject: Re: [RFC PATCH 18/32] function_graph: Fix to initalize ftrace_ops
 for fgraph with ftrace_graph_func

On Tue, 7 Nov 2023 10:49:24 +0900
Masami Hiramatsu (Google) <mhiramat@...nel.org> wrote:

> > I've changed this, because fprobe entry handler is not called via
> > fgraph without this. But maybe I have to set correct gops->ops.func
> > after init?  
> 
> I confirmed that this is right because it is introduced by
> 0c0593b45c9b ("x86/ftrace: Make function graph use ftrace directly")
> which replaces ftrace_stub with ftrace_graph_func (which automatically
> switched by architecture)

Agreed.

-- Steve