From: Oleg Nesterov <oleg@redhat.com>
Date: Mon, 2 Mar 2009 21:58:45 +0000 (+0100)
Subject: copy_process: fix CLONE_PARENT && parent_exec_id interaction
X-Git-Tag: v2.6.27.20~61
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6437d6f99da2b1bdd6105f6f6467102bb937bc23;p=pandora-kernel.git

copy_process: fix CLONE_PARENT && parent_exec_id interaction

commit 2d5516cbb9daf7d0e342a2e3b0fc6f8c39a81205 upstream.

CLONE_PARENT can fool the ->self_exec_id/parent_exec_id logic. If we
re-use the old parent, we must also re-use ->parent_exec_id to make
sure exit_notify() sees the right ->xxx_exec_id's when the CLONE_PARENT'ed
task exits.

Also, move down the "p->parent_exec_id = p->self_exec_id" thing, to place
two different cases together.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Serge E. Hallyn <serge@hallyn.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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