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 BCE4AC4167D for ; Wed, 24 Nov 2021 12:16:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243753AbhKXMSt (ORCPT ); Wed, 24 Nov 2021 07:18:49 -0500 Received: from mail.kernel.org ([198.145.29.99]:41172 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243078AbhKXMNW (ORCPT ); Wed, 24 Nov 2021 07:13:22 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id BD51661130; Wed, 24 Nov 2021 12:07:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1637755664; bh=xmzpDdi+dFBtEOdPA4IUgOZjjZmMIXcbMjn4sF9pUTg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yJBTRV9W3C4eTigkCDBFueMI+Iep2MQ7d5rIiJra/eXc/+GVkKnkehEHfUFWoTCP9 /uDg89LyuKIF6/VYotes0cDwbHIFRMi0V8eMzu1z7EsLDv80yxyBMaI641J4JUM9dO t01iX+PaSjyXKmRIHC9FXOMF21Zd2DSy1pB/tIqw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Austin Kim , Takashi Iwai Subject: [PATCH 4.9 014/207] ALSA: synth: missing check for possible NULL after the call to kstrdup Date: Wed, 24 Nov 2021 12:54:45 +0100 Message-Id: <20211124115704.411042674@linuxfoundation.org> X-Mailer: git-send-email 2.34.0 In-Reply-To: <20211124115703.941380739@linuxfoundation.org> References: <20211124115703.941380739@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: Austin Kim commit d159037abbe3412285c271bdfb9cdf19e62678ff upstream. If kcalloc() return NULL due to memory starvation, it is possible for kstrdup() to return NULL in similar case. So add null check after the call to kstrdup() is made. [ minor coding-style fix by tiwai ] Signed-off-by: Austin Kim Cc: Link: https://lore.kernel.org/r/20211109003742.GA5423@raspberrypi Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/synth/emux/emux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/sound/synth/emux/emux.c +++ b/sound/synth/emux/emux.c @@ -101,7 +101,7 @@ int snd_emux_register(struct snd_emux *e emu->name = kstrdup(name, GFP_KERNEL); emu->voices = kcalloc(emu->max_voices, sizeof(struct snd_emux_voice), GFP_KERNEL); - if (emu->voices == NULL) + if (emu->name == NULL || emu->voices == NULL) return -ENOMEM; /* create soundfont list */