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 655F0C77B7D for ; Mon, 15 May 2023 18:01:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242898AbjEOSBZ (ORCPT ); Mon, 15 May 2023 14:01:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60332 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244258AbjEOSBA (ORCPT ); Mon, 15 May 2023 14:01:00 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2BF5CE4 for ; Mon, 15 May 2023 10:58:33 -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 dfw.source.kernel.org (Postfix) with ESMTPS id 98FFB63015 for ; Mon, 15 May 2023 17:58:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7A136C433D2; Mon, 15 May 2023 17:58:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1684173494; bh=yzyO32OdFln+2y3T39bhhoxeUln21xmm6w9Oaa8fSdE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TRCDQ4lgYwFCA822tihWEDaWp0Tukw/Ftx7mKduEeNawMlVEQAa7lENErvmN6AlhA Vhx+LX/7bzoePSxQd4yGAn++xQzvQjKh3y2BJw+zT9mVQ4vqGAqNYM9VKOTY+zmxnS 1a4uayLX1X4Tg+I6jdV5ZVEorZd4DkwJg6dKJHHw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Liu Jian , Luiz Augusto von Dentz , Sasha Levin Subject: [PATCH 5.4 113/282] Revert "Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work" Date: Mon, 15 May 2023 18:28:11 +0200 Message-Id: <20230515161725.632281493@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230515161722.146344674@linuxfoundation.org> References: <20230515161722.146344674@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Liu Jian [ Upstream commit db2bf510bd5d57f064d9e1db395ed86a08320c54 ] This reverts commit 1e9ac114c4428fdb7ff4635b45d4f46017e8916f. This patch introduces a possible null-ptr-def problem. Revert it. And the fixed bug by this patch have resolved by commit 73f7b171b7c0 ("Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition"). Fixes: 1e9ac114c442 ("Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work") Signed-off-by: Liu Jian Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Sasha Levin --- drivers/bluetooth/btsdio.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/bluetooth/btsdio.c b/drivers/bluetooth/btsdio.c index 81125fb180351..fd9571d5fdac9 100644 --- a/drivers/bluetooth/btsdio.c +++ b/drivers/bluetooth/btsdio.c @@ -343,7 +343,6 @@ static void btsdio_remove(struct sdio_func *func) BT_DBG("func %p", func); - cancel_work_sync(&data->work); if (!data) return; -- 2.39.2