From patchwork Fri Aug 23 10:44:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Berg X-Patchwork-Id: 1152118 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=sipsolutions.net Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="kwMSZG8c"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 46FJ3R2sdVz9sBp for ; Fri, 23 Aug 2019 20:46:11 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=vtR28WuGuv1TTnI5lx2eqipp5mBC2QXmbA8vvd0p3Wg=; b=kwMSZG8c/L4KEC JbecIV4jrPpJs2PO+eLsxOLIP3h/U3uICEhsdkcVnCxfCOxBB9p5kru8WDr7wdFMNwosUqFFQ72Y2 bcQfwsG1awU+I1HXIsxi/ZhOFVVOtIjyGGO+O9jWH2AUXoApFU3vkUQF32c6qVkIC/XUZpd/65HJm G1JXbGsNMJyh9GhBV9HQ6fOYcp+9UkUsPqTpdWWBEjsDM0UaJ71LAACyjRpwFc492ZIww/Q0a01iY snQq1venOACqb2K3EnFyhBZtmGeOpo1mrkyZM2XdDUzMFEixGVB+D1K9YeserePLyMAoYX3H8quGL 6h0VySBxx6xMbSgKPgxw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i174x-00054p-BT; Fri, 23 Aug 2019 10:45:59 +0000 Received: from s3.sipsolutions.net ([2a01:4f8:191:4433::2] helo=sipsolutions.net) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i174u-00053Z-2D for linux-um@lists.infradead.org; Fri, 23 Aug 2019 10:45:57 +0000 Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1i174p-0001vM-Tn; Fri, 23 Aug 2019 12:45:52 +0200 From: Johannes Berg To: linux-um@lists.infradead.org Subject: [PATCH 2/4] arch: um: avoid using uninitialized regs Date: Fri, 23 Aug 2019 12:44:27 +0200 Message-Id: <20190823104429.11047-2-johannes@sipsolutions.net> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190823104429.11047-1-johannes@sipsolutions.net> References: <20190823104429.11047-1-johannes@sipsolutions.net> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190823_034556_105150_660D983B X-CRM114-Status: UNSURE ( 7.16 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 SPF_NONE SPF: sender does not publish an SPF Record X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Johannes Berg Sender: "linux-um" Errors-To: linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From: Johannes Berg In timer_real_alarm_handler(), regs is only initialized if the context argument is non-NULL, also initialize in the other case. Signed-off-by: Johannes Berg Acked-by: Anton Ivanov --- arch/um/os-Linux/signal.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c index 35d1b2bc00cb..4cd88b5b9006 100644 --- a/arch/um/os-Linux/signal.c +++ b/arch/um/os-Linux/signal.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -88,6 +89,8 @@ static void timer_real_alarm_handler(mcontext_t *mc) if (mc != NULL) get_regs_from_mc(®s, mc); + else + memset(®s, 0, sizeof(regs)); timer_handler(SIGALRM, NULL, ®s); }