From: Oleg Nesterov <oleg@redhat.com>
Date: Fri, 8 Jul 2011 17:13:39 +0000 (+0200)
Subject: ptrace_init_task: initialize child->jobctl explicitly
X-Git-Tag: v3.1-rc1~308^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6634ae1033ceaeca5877dd75723210f8c2648c17;p=pandora-kernel.git

ptrace_init_task: initialize child->jobctl explicitly

new_child->jobctl is not initialized during the fork, it is copied
from parent->jobctl. Currently this is harmless, the forking task
is running and copy_process() can't succeed if signal_pending() is
true, so only JOBCTL_STOP_DEQUEUED can be copied. Still this is a
bit fragile, it would be more clean to set ->jobctl = 0 explicitly.

Also, check ->ptrace != 0 instead of PT_PTRACED, move the
CONFIG_HAVE_HW_BREAKPOINT code up.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
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