From patchwork Wed Jul 10 14:16:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Smirnov X-Patchwork-Id: 811899 Received: from mx01.omp.ru (mx01.omp.ru [90.154.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9AA9319149A for ; Wed, 10 Jul 2024 14:16:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.154.21.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720621022; cv=none; b=CNVeKa6EIUDpEnOABOtohOJaaZdpYMwQWgOV/HX+b0VReQeuGbc80YXBX9z+5wBDdeYMryVzPTpOMdeaLr0UUAySoeJzqWUo9YQD4dpJPILu4d/X9kAC6h4ZX+mH9TVYo4yuOA5/Kss+NeC5Pj8sl4jtF3nXf3ngRj09FPvXk4E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720621022; c=relaxed/simple; bh=X2qylBZT9BN9u2EfJAE1ZxkzNPzM0HpM48nU9tgCGco=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=arfMH1tGrhROAHDqghxnD3SAZFaHpEM9bDi2ECm7tuYTvO408UI6bgTJI9OrCQTLqEZyoYP9vGCdT7i50x8acsDZctt8AVKorXsDQPRVE/LzAOhESK4zKsXcJ/zWwVYBzeKjrCdnuHRlI9qLP4CUFnyIoZmKiWJ1q8T9w+mtyRs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=omp.ru; spf=pass smtp.mailfrom=omp.ru; arc=none smtp.client-ip=90.154.21.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=omp.ru Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=omp.ru Received: from localhost.localdomain (178.205.55.202) by msexch01.omp.ru (10.188.4.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.1258.12; Wed, 10 Jul 2024 17:16:36 +0300 From: Roman Smirnov To: CC: Roman Smirnov Subject: [PATCH BlueZ v3 resend 1/6] gatt: add a check to sock_io_send() Date: Wed, 10 Jul 2024 17:16:14 +0300 Message-ID: <20240710141621.64394-2-r.smirnov@omp.ru> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240710141621.64394-1-r.smirnov@omp.ru> References: <20240710141621.64394-1-r.smirnov@omp.ru> Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: msexch01.omp.ru (10.188.4.12) To msexch01.omp.ru (10.188.4.12) X-KSE-ServerInfo: msexch01.omp.ru, 9 X-KSE-AntiSpam-Interceptor-Info: scan successful X-KSE-AntiSpam-Version: 6.1.0, Database issued on: 07/10/2024 13:54:49 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 0 X-KSE-AntiSpam-Info: Lua profiles 186438 [Jul 10 2024] X-KSE-AntiSpam-Info: Version: 6.1.0.4 X-KSE-AntiSpam-Info: Envelope from: r.smirnov@omp.ru X-KSE-AntiSpam-Info: LuaCore: 24 0.3.24 186c4d603b899ccfd4883d230c53f273b80e467f X-KSE-AntiSpam-Info: {rep_avail} X-KSE-AntiSpam-Info: {Tracking_from_domain_doesnt_match_to} X-KSE-AntiSpam-Info: omp.ru:7.1.1; d41d8cd98f00b204e9800998ecf8427e.com:7.1.1; 127.0.0.199:7.1.2 X-KSE-AntiSpam-Info: ApMailHostAddress: 178.205.55.202 X-KSE-AntiSpam-Info: Rate: 0 X-KSE-AntiSpam-Info: Status: not_detected X-KSE-AntiSpam-Info: Method: none X-KSE-AntiSpam-Info: Auth:dmarc=temperror header.from=omp.ru;spf=temperror smtp.mailfrom=omp.ru;dkim=none X-KSE-Antiphishing-Info: Clean X-KSE-Antiphishing-ScanningType: Heuristic X-KSE-Antiphishing-Method: None X-KSE-Antiphishing-Bases: 07/10/2024 14:00:00 X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 7/10/2024 12:34:00 PM X-KSE-Attachment-Filter-Triggered-Rules: Clean X-KSE-Attachment-Filter-Triggered-Filters: Clean X-KSE-BulkMessagesFiltering-Scan-Result: InTheLimit It is necessary to add a return value check. Found with the SVACE static analysis tool. --- V1 -> V3: the patch name has been shortened src/gatt-database.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/src/gatt-database.c b/src/gatt-database.c index 8472aac59..6c84b085c 100644 --- a/src/gatt-database.c +++ b/src/gatt-database.c @@ -2630,6 +2630,7 @@ static int sock_io_send(struct io *io, const void *data, size_t len) { struct msghdr msg; struct iovec iov; + int fd; iov.iov_base = (void *) data; iov.iov_len = len; @@ -2638,7 +2639,13 @@ static int sock_io_send(struct io *io, const void *data, size_t len) msg.msg_iov = &iov; msg.msg_iovlen = 1; - return sendmsg(io_get_fd(io), &msg, MSG_NOSIGNAL); + fd = io_get_fd(io); + if (fd < 0) { + error("io_get_fd() returned %d\n", fd); + return fd; + } + + return sendmsg(fd, &msg, MSG_NOSIGNAL); } static void att_disconnect_cb(int err, void *user_data)