From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DD8B5C433F5 for ; Mon, 3 Sep 2018 20:45:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7DAF220645 for ; Mon, 3 Sep 2018 20:45:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7DAF220645 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=xmission.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729095AbeIDBHV (ORCPT ); Mon, 3 Sep 2018 21:07:21 -0400 Received: from out02.mta.xmission.com ([166.70.13.232]:44262 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728386AbeIDBHV (ORCPT ); Mon, 3 Sep 2018 21:07:21 -0400 Received: from in02.mta.xmission.com ([166.70.13.52]) by out02.mta.xmission.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.87) (envelope-from ) id 1fwviw-0004y2-Ls; Mon, 03 Sep 2018 14:45:26 -0600 Received: from [105.225.206.69] (helo=x220.Home) by in02.mta.xmission.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_CBC_SHA256:128) (Exim 4.87) (envelope-from ) id 1fwviv-0008G7-Kh; Mon, 03 Sep 2018 14:45:26 -0600 From: "Eric W. Biederman" To: linux-kernel@vger.kernel.org Cc: Oleg Nesterov , Linus Torvalds , linux-api@vger.kernel.org, "Eric W. Biederman" Date: Mon, 3 Sep 2018 22:44:25 +0200 Message-Id: <20180903204430.25473-5-ebiederm@xmission.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <87musyl3fa.fsf@xmission.com> References: <87musyl3fa.fsf@xmission.com> X-XM-SPF: eid=1fwviv-0008G7-Kh;;;mid=<20180903204430.25473-5-ebiederm@xmission.com>;;;hst=in02.mta.xmission.com;;;ip=105.225.206.69;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX1+R4kB7DDxxkwY0WFKRCr7gKz1lcTF6gJI= X-SA-Exim-Connect-IP: 105.225.206.69 X-SA-Exim-Mail-From: ebiederm@xmission.com Subject: [PATCH 05/10] signal: send_sig_all no longer needs SEND_SIG_FORCED X-SA-Exim-Version: 4.2.1 (built Thu, 05 May 2016 13:38:54 -0600) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that send_signal always delivers SEND_SIG_PRIV signals to a pid namespace init it is no longer necessary to use SEND_SIG_FORCED when calling do_send_sig_info to ensure that pid namespace inits are signaled and possibly killed. Using SEND_SIG_PRIV is sufficient. So use SEND_SIG_PRIV so that userspace when it receives a SIGTERM can tell that the kernel sent the signal and not some random userspace application. Fixes: b82c32872db2 ("sysrq: use SEND_SIG_FORCED instead of force_sig()") Signed-off-by: "Eric W. Biederman" --- drivers/tty/sysrq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index 06ed20dd01ba..ad1ee5d01b53 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -348,7 +348,7 @@ static void send_sig_all(int sig) if (is_global_init(p)) continue; - do_send_sig_info(sig, SEND_SIG_FORCED, p, PIDTYPE_MAX); + do_send_sig_info(sig, SEND_SIG_PRIV, p, PIDTYPE_MAX); } read_unlock(&tasklist_lock); } -- 2.17.1