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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DDBEFC433EF for ; Mon, 18 Oct 2021 13:30:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CBBD06135A for ; Mon, 18 Oct 2021 13:30:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232098AbhJRNcz (ORCPT ); Mon, 18 Oct 2021 09:32:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:43392 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232361AbhJRNbD (ORCPT ); Mon, 18 Oct 2021 09:31:03 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 23D496136A; Mon, 18 Oct 2021 13:28:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1634563719; bh=mIfWHTo6F5vNmIUpGiI4Mgv2twSJ0V9JjEE+iJXG1q8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mYNf+4T+IFKRaizpfv9QLNLuLNgl+pnPlTBUEO3/3Xl2VmmtqoN3anM6dBAlF88or EuEzUkgZ1I4FES2wOb2CmYZj6R1K4lwmfebqt0s6qMb0sGRktgwSucxGykBCVzwabb lZMNrOBfE3fGrFxVRWMYNhaYCpKIKAcTz0qHtF5I= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ziyang Xuan , Krzysztof Kozlowski , Jakub Kicinski Subject: [PATCH 4.19 38/50] nfc: fix error handling of nfc_proto_register() Date: Mon, 18 Oct 2021 15:24:45 +0200 Message-Id: <20211018132327.785476316@linuxfoundation.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211018132326.529486647@linuxfoundation.org> References: <20211018132326.529486647@linuxfoundation.org> User-Agent: quilt/0.66 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: Ziyang Xuan commit 0911ab31896f0e908540746414a77dd63912748d upstream. When nfc proto id is using, nfc_proto_register() return -EBUSY error code, but forgot to unregister proto. Fix it by adding proto_unregister() in the error handling case. Fixes: c7fe3b52c128 ("NFC: add NFC socket family") Signed-off-by: Ziyang Xuan Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20211013034932.2833737-1-william.xuanziyang@huawei.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- net/nfc/af_nfc.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/nfc/af_nfc.c +++ b/net/nfc/af_nfc.c @@ -72,6 +72,9 @@ int nfc_proto_register(const struct nfc_ proto_tab[nfc_proto->id] = nfc_proto; write_unlock(&proto_tab_lock); + if (rc) + proto_unregister(nfc_proto->proto); + return rc; } EXPORT_SYMBOL(nfc_proto_register);