From: Kirill Korotaev <dev@sw.ru>
Date: Fri, 29 Sep 2006 09:00:05 +0000 (-0700)
Subject: [PATCH] Fix unserialized task->files changing
X-Git-Tag: v2.6.19-rc1~767
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3b9b8ab65d8eed784b9164d03807cb2bda7b5cd6;p=pandora-kernel.git

[PATCH] Fix unserialized task->files changing

Fixed race on put_files_struct on exec with proc.  Restoring files on
current on error path may lead to proc having a pointer to already kfree-d
files_struct.

->files changing at exit.c and khtread.c are safe as exit_files() makes all
things under lock.

Found during OpenVZ stress testing.

[akpm@osdl.org: add export]
Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Kirill Korotaev <dev@openvz.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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