From patchwork Thu Aug 20 09:23:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 265551 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 63236C433E1 for ; Thu, 20 Aug 2020 11:39:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 38C11204EA for ; Thu, 20 Aug 2020 11:39:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597923596; bh=XNKaTE2ci2wFaOo4QSprTRSo8NpV/zmGFkbk4YYhCi8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=W5B1hOZvshKtHoAMt61UuSEWMH7iKuo5mkc7w0MsKtJf/c1BqvukLNe87D3egyWyZ BkaE+UflgOSN4UDShqw1k83B8+rjyGSrJMuQkbw8q4yRNtoiYm6pIfP68ESjpy1lcF xMypnJdz8zm53gIc7H4nC//6FbYirH0VkyxDMN+Q= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729248AbgHTLjh (ORCPT ); Thu, 20 Aug 2020 07:39:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:33218 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730566AbgHTKFb (ORCPT ); Thu, 20 Aug 2020 06:05:31 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1BC2E206DA; Thu, 20 Aug 2020 10:05:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597917931; bh=XNKaTE2ci2wFaOo4QSprTRSo8NpV/zmGFkbk4YYhCi8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vhszG3m1WzWY+kLEK3IaPogzRG3asVCriF+GeBh86rXHS7gXheDKJ1YVevSCchnnh zKtP/ZfrEWeidlWzzgzh6TgYc+/+4umuaRE4WgWAzXOzY8Wijdvy28M6p/4+SJ10GZ Ki2QaagqZfj/X4e79s9xZ7swSIL+I69k2iZYaJ3Y= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dinghao Liu , Takashi Iwai , Sasha Levin Subject: [PATCH 4.9 208/212] ALSA: echoaudio: Fix potential Oops in snd_echo_resume() Date: Thu, 20 Aug 2020 11:23:01 +0200 Message-Id: <20200820091612.851722448@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200820091602.251285210@linuxfoundation.org> References: <20200820091602.251285210@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Dinghao Liu [ Upstream commit 5a25de6df789cc805a9b8ba7ab5deef5067af47e ] Freeing chip on error may lead to an Oops at the next time the system goes to resume. Fix this by removing all snd_echo_free() calls on error. Fixes: 47b5d028fdce8 ("ALSA: Echoaudio - Add suspend support #2") Signed-off-by: Dinghao Liu Link: https://lore.kernel.org/r/20200813074632.17022-1-dinghao.liu@zju.edu.cn Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/pci/echoaudio/echoaudio.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c index d73ee11a32bd0..db14ee43e461a 100644 --- a/sound/pci/echoaudio/echoaudio.c +++ b/sound/pci/echoaudio/echoaudio.c @@ -2215,7 +2215,6 @@ static int snd_echo_resume(struct device *dev) if (err < 0) { kfree(commpage_bak); dev_err(dev, "resume init_hw err=%d\n", err); - snd_echo_free(chip); return err; } @@ -2242,7 +2241,6 @@ static int snd_echo_resume(struct device *dev) if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED, KBUILD_MODNAME, chip)) { dev_err(chip->card->dev, "cannot grab irq\n"); - snd_echo_free(chip); return -EBUSY; } chip->irq = pci->irq;