Re: [RFC v2 3/6] kthread: warn on kill signal if not OOM
From: Oleg Nesterov
Date: Fri Sep 05 2014 - 07:03:29 EST
On 09/04, Luis R. Rodriguez wrote:
>
> From: "Luis R. Rodriguez" <mcgrof@xxxxxxxx>
>
> The new umh kill option has allowed kthreads to receive
> kill signals but they are generally accepting all sources
> of kill signals
And I think this is right,
> while the original motivation was to enable
> through the OOM from sending the kill.
even if the main concern was OOM.
> Users can provide a log output and it should be clear on
> the trace what probe / driver got the kill signal.
Well, if you need a WARN output, perhaps you could just add
WARN_ON(fatal_signal_pending()) at the end of load_module() ?
Not only kthread_create() can fail if systemd sends SIGKILL.
> Although Oleg had rejected a
> similar change a while ago
And honestly, I still dislike this change.
Oleg.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/