From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Fri, 31 Aug 2007 06:56:27 +0000 (-0700)
Subject: setpgid(child) fails if the child was forked by sub-thread
X-Git-Tag: v2.6.23-rc5~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b07e35f94a7b6a059f889b904529ee907dc0634d;p=pandora-kernel.git

setpgid(child) fails if the child was forked by sub-thread

Spotted by Marcin Kowalczyk <qrczak@knm.org.pl>.

sys_setpgid(child) fails if the child was forked by sub-thread.

Fix the "is it our child" check. The previous commit
ee0acf90d320c29916ba8c5c1b2e908d81f5057d was not complete.

(this patch asks for the new same_thread_group() helper, but mainline doesn't
 have it yet).

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Roland McGrath <roland@redhat.com>
Cc: <stable@kernel.org>
Tested-by: "Marcin 'Qrczak' Kowalczyk" <qrczak@knm.org.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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