From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 37509D507 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 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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