From patchwork Thu Dec 19 07:31:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ahmad Fatoum X-Patchwork-Id: 13914596 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D0B79216E37 for ; Thu, 19 Dec 2024 07:31:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734593516; cv=none; b=favCrFQDJ0ta0SnJEk/Wc4UAJz0Qo6LiLEmL+O2k3VspyZzGYPR1juFQEU46NdvC2kCNlRF3Tnmao70z3FONZXm6c3vopPTV2npM7T4NY4ZbWs0ZCfok2BEijHcCy836yXhEchMQP5f6K6kmb+uiIrgvwFEwSb8yuGMNEF0CTDA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734593516; c=relaxed/simple; bh=Dbh2Kpv3bXLQD+GsqfTMp3KLQ2xI6YShyiyhisXZNj0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Pgpm6I0n0+tn5WxPUjpJy3STD8JBCFjPeHUZp3+uL5DdqZK/1DzdI0Oqcp8rI1IrWitdebOXzAU0ImApOtu9bwbDlUoEiy0NcfztF4934LPj+bnc97sUWFHFifuIYKgcrAtA9QcaVfnNKM2oOqlHvbYf6znxCMB+/iVErNkxE9c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tOB0O-00088U-1U; Thu, 19 Dec 2024 08:31:32 +0100 Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tOB0L-004APs-23; Thu, 19 Dec 2024 08:31:30 +0100 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1tOB0M-00GkbH-0o; Thu, 19 Dec 2024 08:31:30 +0100 From: Ahmad Fatoum Date: Thu, 19 Dec 2024 08:31:26 +0100 Subject: [PATCH 05/11] reboot: indicate whether it is a HARDWARE PROTECTION reboot or shutdown Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241219-hw_protection-reboot-v1-5-263a0c1df802@pengutronix.de> References: <20241219-hw_protection-reboot-v1-0-263a0c1df802@pengutronix.de> In-Reply-To: <20241219-hw_protection-reboot-v1-0-263a0c1df802@pengutronix.de> To: Daniel Lezcano , Fabio Estevam , "Rafael J. Wysocki" , Zhang Rui , Lukasz Luba , Jonathan Corbet , Serge Hallyn , Liam Girdwood , Mark Brown , Matti Vaittinen , Benson Leung , Tzung-Bi Shih , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-doc@vger.kernel.org, linux-security-module@vger.kernel.org, chrome-platform@lists.linux.dev, devicetree@vger.kernel.org, kernel@pengutronix.de, Ahmad Fatoum X-Mailer: b4 0.14.2 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: a.fatoum@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-security-module@vger.kernel.org It currently depends on the caller, whether we attempt a hardware protection shutdown (poweroff) or a reboot. A follow-up commit will make this partially user-configurable, so it's a good idea to have the emergency message clearly state whether the kernel is going for a reboot or a shutdown. Signed-off-by: Ahmad Fatoum --- kernel/reboot.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/reboot.c b/kernel/reboot.c index da6c8bdeeefe627a76c7ec6e8926138ebbe3ae4e..aa6317939af41c9730ec5a74b7faf03f7c0f25a7 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -1023,7 +1023,8 @@ void __hw_protection_trigger(const char *reason, int ms_until_forced, { static atomic_t allow_proceed = ATOMIC_INIT(1); - pr_emerg("HARDWARE PROTECTION shutdown (%s)\n", reason); + pr_emerg("HARDWARE PROTECTION %s (%s)\n", + hw_protection_action_str(action), reason); /* Shutdown should be initiated only once. */ if (!atomic_dec_and_test(&allow_proceed))