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 X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 CC0EDC00454 for ; Tue, 10 Dec 2019 21:05:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 97B492468B for ; Tue, 10 Dec 2019 21:05:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576011947; bh=QZ/VVS7YQvwsxHB/D4hBgRmpqvMhX7QU3kJXgtn3YMY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=CQd26lYaDtYLtjjec5KOPxnjrCftEy7ZWSSlMKPWxnBTmc3NTt9ZmTI0n9u8P4UiY k8Oz0A3gwJJ7EaMSShwRgzUxSzDv7CjRYNAtndWCsYO9EL1ddmlGWYTMicvANVAuZm 7VqcjtGMbxOweMfR0s9f/EO7pMj5hS5S3Z8ZFmHE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727378AbfLJVEg (ORCPT ); Tue, 10 Dec 2019 16:04:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:49724 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727349AbfLJVEg (ORCPT ); Tue, 10 Dec 2019 16:04:36 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A969124682; Tue, 10 Dec 2019 21:04:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576011875; bh=QZ/VVS7YQvwsxHB/D4hBgRmpqvMhX7QU3kJXgtn3YMY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BYWUEfsz0FMsBXIhd1bNqwQTSlc+pwzzf7V4Y2se9Xgaujbmep0Kc+CL/QHZK03+E bbrE2zj64hIGC2y8bYMubIEPBsB45r1tFAVgNnDKP/vi0QNTbp+ILJa9ztjeVsCC1X CKJ5Eme2TfiiJNxtQOf0rMxTM5c3oW/0d//X/YDI= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Allen Pais , Kalle Valo , Sasha Levin , linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 027/350] libertas: fix a potential NULL pointer dereference Date: Tue, 10 Dec 2019 15:58:39 -0500 Message-Id: <20191210210402.8367-27-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191210210402.8367-1-sashal@kernel.org> References: <20191210210402.8367-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Allen Pais [ Upstream commit 7da413a18583baaf35dd4a8eb414fa410367d7f2 ] alloc_workqueue is not checked for errors and as a result, a potential NULL dereference could occur. Signed-off-by: Allen Pais Signed-off-by: Kalle Valo Signed-off-by: Sasha Levin --- drivers/net/wireless/marvell/libertas/if_sdio.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/wireless/marvell/libertas/if_sdio.c b/drivers/net/wireless/marvell/libertas/if_sdio.c index 242d8845da3fa..30f1025ecb9bc 100644 --- a/drivers/net/wireless/marvell/libertas/if_sdio.c +++ b/drivers/net/wireless/marvell/libertas/if_sdio.c @@ -1179,6 +1179,10 @@ static int if_sdio_probe(struct sdio_func *func, spin_lock_init(&card->lock); card->workqueue = alloc_workqueue("libertas_sdio", WQ_MEM_RECLAIM, 0); + if (unlikely(!card->workqueue)) { + ret = -ENOMEM; + goto err_queue; + } INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker); init_waitqueue_head(&card->pwron_waitq); @@ -1230,6 +1234,7 @@ err_activate_card: lbs_remove_card(priv); free: destroy_workqueue(card->workqueue); +err_queue: while (card->packets) { packet = card->packets; card->packets = card->packets->next; -- 2.20.1