From: Jeff Dike <jdike@addtoit.com>
Date: Tue, 5 Feb 2008 06:31:10 +0000 (-0800)
Subject: uml: don't kill pid 0
X-Git-Tag: v2.6.25-rc1~818
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=00a905e6145ba200308a6a13e00248b85c600bd0;p=pandora-kernel.git

uml: don't kill pid 0

A bit of defensive programming - during development, it ocassionally
happens that a call to init_new_context is missed, resulting in
context holding a host pid of zero.  When that address space is torn
down, destroy_context does a kill(0), which instantly kills the whole
UML without any errors whatsoever.

This patch add a check for pids less than 2, to also catch 1 and
negative pids.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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