Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753031AbaBNOPZ (ORCPT ); Fri, 14 Feb 2014 09:15:25 -0500 Received: from mailhub.sw.ru ([195.214.232.25]:10902 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752334AbaBNOPX (ORCPT ); Fri, 14 Feb 2014 09:15:23 -0500 From: Andrey Vagin To: linux-kernel@vger.kernel.org Cc: criu@openvz.org, Andrey Vagin , Andrew Morton , Oleg Nesterov , Al Viro , Kees Cook , "Eric W. Biederman" , Stephen Rothwell , Pavel Emelyanov , Aditya Kali Subject: [PATCH 3/3] prctl: allow to use PR_MM_SET_* which affect only a current task Date: Fri, 14 Feb 2014 18:13:29 +0400 Message-Id: <1392387209-330-4-git-send-email-avagin@openvz.org> X-Mailer: git-send-email 1.8.5.3 In-Reply-To: <1392387209-330-1-git-send-email-avagin@openvz.org> References: <1392387209-330-1-git-send-email-avagin@openvz.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Here are PR_SET_MM_*_CODE, PR_SET_MM_ARG_*, PR_SET_MM_ENV_*, PR_SET_MM_AUXV. Looks like all these parameters can break only the current task and can not affect other tasks or limits. Cc: Andrew Morton Cc: Oleg Nesterov Cc: Al Viro Cc: Kees Cook Cc: "Eric W. Biederman" Cc: Stephen Rothwell Cc: Pavel Emelyanov Cc: Aditya Kali Signed-off-by: Andrey Vagin --- kernel/sys.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/kernel/sys.c b/kernel/sys.c index 2f0925d..154cf47 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1719,8 +1719,7 @@ static int prctl_set_mm(int opt, unsigned long addr, if (!issecure(SECURE_SET_EXE_FILE)) return -EPERM; break; - default: - return -EPERM; + /* Other options don't require special capabilities */ } } -- 1.8.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/