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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82850CCA48A for ; Tue, 7 Jun 2022 19:32:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356271AbiFGTbz (ORCPT ); Tue, 7 Jun 2022 15:31:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34752 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353450AbiFGSlX (ORCPT ); Tue, 7 Jun 2022 14:41:23 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B0E1818629C; Tue, 7 Jun 2022 10:58:40 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 8AF69B8236C; Tue, 7 Jun 2022 17:58:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DDEC5C34115; Tue, 7 Jun 2022 17:58:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1654624706; bh=zH/pSgAZjZwfNYbHLmOYRBuLfI0NNzWZ3BELSFKBlck=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YO2e98vTN2LKZTeTxMqnm/9PdtUbZMVWjNKZ2PIsCSvt137RJ0TzbuIBL26d2Vf/R wSwWjqIFqhNDzb2e2Lq53Yw9git8pUKtpgmVbPv4oDkizEqXmX9RiXUseLR8kXmwC5 D5CIi1Oe4g2XRNAfTezp5jT6A6Dowpg1rsFcGdrU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, QintaoShen , Florian Fainelli , Sasha Levin Subject: [PATCH 5.15 423/667] soc: bcm: Check for NULL return of devm_kzalloc() Date: Tue, 7 Jun 2022 19:01:28 +0200 Message-Id: <20220607164947.418341271@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220607164934.766888869@linuxfoundation.org> References: <20220607164934.766888869@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: QintaoShen [ Upstream commit b4bd2aafacce48db26b0a213d849818d940556dd ] As the potential failure of allocation, devm_kzalloc() may return NULL. Then the 'pd->pmb' and the follow lines of code may bring null pointer dereference. Therefore, it is better to check the return value of devm_kzalloc() to avoid this confusion. Fixes: 8bcac4011ebe ("soc: bcm: add PM driver for Broadcom's PMB") Signed-off-by: QintaoShen Signed-off-by: Florian Fainelli Signed-off-by: Sasha Levin --- drivers/soc/bcm/bcm63xx/bcm-pmb.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/soc/bcm/bcm63xx/bcm-pmb.c b/drivers/soc/bcm/bcm63xx/bcm-pmb.c index 774465c119be..2ac20084e5a5 100644 --- a/drivers/soc/bcm/bcm63xx/bcm-pmb.c +++ b/drivers/soc/bcm/bcm63xx/bcm-pmb.c @@ -314,6 +314,9 @@ static int bcm_pmb_probe(struct platform_device *pdev) for (e = table; e->name; e++) { struct bcm_pmb_pm_domain *pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); + if (!pd) + return -ENOMEM; + pd->pmb = pmb; pd->data = e; pd->genpd.name = e->name; -- 2.35.1