From patchwork Mon Mar 1 16:12:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 390291 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 952F3C43381 for ; Mon, 1 Mar 2021 16:18:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 59AEE64E41 for ; Mon, 1 Mar 2021 16:18:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237714AbhCAQS3 (ORCPT ); Mon, 1 Mar 2021 11:18:29 -0500 Received: from mail.kernel.org ([198.145.29.99]:55628 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237641AbhCAQRP (ORCPT ); Mon, 1 Mar 2021 11:17:15 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id C734F64E22; Mon, 1 Mar 2021 16:16:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614615392; bh=yOBw94hre7I/AqrzKtREt1jzHA2wlP2kU143oIDKqOE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L8XJ6a9cA+8SaaFkcd0PhZ/AmKGqscW2vwzJKdUpmnCeAfgVh2QgMXzVCKKL8J0aq EWad7CtbMjREa+xKmMtZ2Js57BdPb9oRQzJo2YTr0muiW/OaUfWHNUdwDR+NYNkBh6 /chR+7acU25XnWe+XT2roXeXGVTS8O51+0pYoxPE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Pan Bian , Marcel Holtmann , Sasha Levin Subject: [PATCH 4.4 13/93] Bluetooth: Put HCI device if inquiry procedure interrupts Date: Mon, 1 Mar 2021 17:12:25 +0100 Message-Id: <20210301161007.558352233@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161006.881950696@linuxfoundation.org> References: <20210301161006.881950696@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Pan Bian [ Upstream commit 28a758c861ff290e39d4f1ee0aa5df0f0b9a45ee ] Jump to the label done to decrement the reference count of HCI device hdev on path that the Inquiry procedure is interrupted. Fixes: 3e13fa1e1fab ("Bluetooth: Fix hci_inquiry ioctl usage") Signed-off-by: Pan Bian Signed-off-by: Marcel Holtmann Signed-off-by: Sasha Levin --- net/bluetooth/hci_core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 4bce3ef2c392a..cc905a4e57325 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -1372,8 +1372,10 @@ int hci_inquiry(void __user *arg) * cleared). If it is interrupted by a signal, return -EINTR. */ if (wait_on_bit(&hdev->flags, HCI_INQUIRY, - TASK_INTERRUPTIBLE)) - return -EINTR; + TASK_INTERRUPTIBLE)) { + err = -EINTR; + goto done; + } } /* for unlimited number of responses we will use buffer with