commit 4c619aa0ba171c092a0ae5d969364deb82dbe371
author Andrew Morton <akpm@linux-foundation.org> Wed Mar 28 14:42:52 2012 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> Wed Mar 28 17:14:37 2012 -0700
tree bc710f9a419f1f87712f5fa4c341330f7293c3d8
parent f4507164e7796b66c371ff9a63154f1c884a2433

fs/proc/namespaces.c: prevent crash when ns_entries[] is empty

If CONFIG_NET_NS, CONFIG_UTS_NS and CONFIG_IPC_NS are disabled,
ns_entries[] becomes empty and things like
ns_entries[ARRAY_SIZE(ns_entries) - 1] will explode.

Reported-by: Richard Weinberger <richard@nod.at>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Daniel Lezcano <daniel.lezcano@free.fr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>