Re: [PATCH 4.19 38/92] kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler

[Steven Rostedt]

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