From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757199AbaGWFKq (ORCPT ); Wed, 23 Jul 2014 01:10:46 -0400 Received: from mail-yh0-f49.google.com ([209.85.213.49]:35335 "EHLO mail-yh0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756992AbaGWFKm (ORCPT ); Wed, 23 Jul 2014 01:10:42 -0400 From: Pranith Kumar To: "Paul E. McKenney" , Josh Triplett , Steven Rostedt , Mathieu Desnoyers , Lai Jiangshan , linux-kernel@vger.kernel.org (open list:READ-COPY UPDATE...) Subject: [PATCH 02/16] rcu: Check return value for cpumask allocation Date: Wed, 23 Jul 2014 01:09:39 -0400 Message-Id: <1406092194-13004-3-git-send-email-bobby.prani@gmail.com> X-Mailer: git-send-email 2.0.0.rc2 In-Reply-To: <1406092194-13004-1-git-send-email-bobby.prani@gmail.com> References: <1406092194-13004-1-git-send-email-bobby.prani@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This commit add a check for return value of zalloc_cpumask_var() used while allocating cpumask for rcu_nocb_mask. Signed-off-by: Pranith Kumar --- kernel/rcu/tree_plugin.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index f07b643..bac9797 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -88,7 +88,10 @@ static void __init rcu_bootup_announce_oddness(void) #ifdef CONFIG_RCU_NOCB_CPU #ifndef CONFIG_RCU_NOCB_CPU_NONE if (!have_rcu_nocb_mask) { - zalloc_cpumask_var(&rcu_nocb_mask, GFP_KERNEL); + if (!zalloc_cpumask_var(&rcu_nocb_mask, GFP_KERNEL)) { + pr_info("rcu_nocb_mask allocation failed\n"); + return; + } have_rcu_nocb_mask = true; } #ifdef CONFIG_RCU_NOCB_CPU_ZERO -- 2.0.0.rc2