linux-kernel - Re: [PATCH 4.19 38/92] kprobes: Fix NULL pointer dereference at kprobe_ftrace

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: <20200928180942.100aa6c8@oasis.local.home>
Date:   Mon, 28 Sep 2020 18:09:42 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        open list <linux-kernel@...r.kernel.org>,
        linux- stable <stable@...r.kernel.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Muchun Song <songmuchun@...edance.com>,
        Chengming Zhou <zhouchengming@...edance.com>
Subject: Re: [PATCH 4.19 38/92] kprobes: Fix NULL pointer dereference at
 kprobe_ftrace_handler

On Tue, 29 Sep 2020 01:32:59 +0530
Naresh Kamboju <naresh.kamboju@...aro.org> wrote:

> stable rc branch 4.19 build warning on arm64.
> 
> ../kernel/kprobes.c: In function ‘kill_kprobe’:
> ../kernel/kprobes.c:1070:33: warning: statement with no effect [-Wunused-value]
>  1070 | #define disarm_kprobe_ftrace(p) (-ENODEV)
>       |                                 ^
> ../kernel/kprobes.c:2090:3: note: in expansion of macro ‘disarm_kprobe_ftrace’
>  2090 |   disarm_kprobe_ftrace(p);
>       |   ^~~~~~~~~~~~~~~~~~~~

Seems to affect upstream as well.

-- Steve