[RFC] is_global_init() called on global init sub-thread

[Sergey Senozhatsky]

Hello,

re-upping https://www.redhat.com/archives/linux-audit/2013-December/msg00086.html

Oleg Nesterov wrote:

:Because is_global_init() is only true for the main thread of /sbin/init.
:
:Just look at oom_unkillable_task(). It tries to not kill init. But, say,
:select_bad_process() can happily find a sub-thread of is_global_init()
:and still kill it.

this is still the case, isn't it? at least in some -stable kernels.
is there (or was there) any reason this change has never been committed?
(I'm particularly interested in is_global_init()).

 static inline int is_global_init(struct task_struct *tsk)
 {
-	return tsk->pid == 1;
+	return task_tgid_nr(tsk) == 1;
 }

	-ss
--
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/