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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 62AD9C2D0CE for ; Fri, 24 Jan 2020 09:33:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 37C5A214AF for ; Fri, 24 Jan 2020 09:33:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579858418; bh=XMMTOnTR4fkuOQfvrA6iNoVa2kpTSOO505e7+9tIZgI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ohrA5FyXlZqYflL5SiZs+xOvVWJOx+d2EqTcNDLi3SMA3uekffu6AtaJBE0sYj2eR pLs26HVawALN2g/RidoHSegKMoyU5BUQUyaTdcbx3f+o6mjckScghNRM3/3sDsGWI+ /VUBfdTMkEPCU+0P1FAk380RWSwoGPDF836jT1S0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729715AbgAXJdh (ORCPT ); Fri, 24 Jan 2020 04:33:37 -0500 Received: from mail.kernel.org ([198.145.29.99]:60038 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729045AbgAXJdg (ORCPT ); Fri, 24 Jan 2020 04:33:36 -0500 Received: from localhost (unknown [145.15.244.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E1CE32077C; Fri, 24 Jan 2020 09:33:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579858414; bh=XMMTOnTR4fkuOQfvrA6iNoVa2kpTSOO505e7+9tIZgI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pZpDqbSvXU6yqlIZGk+/HfBaBFPts30FC6j1C4LTP7tBnbK6AvVHEHRJz9aQ1S5n4 JvaatSeIfvH1A6vSjLnvieqKIEd/T8NtcJ0cNiovAI0U6Iic+KKM2iR6T1Kg9bKEfW C6sc5rskvFPTW4p662dZUdG9HyJrEzzZLNCoPyfE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andrii Nakryiko , Daniel Borkmann Subject: [PATCH 5.4 004/102] libbpf: Fix potential overflow issue Date: Fri, 24 Jan 2020 10:30:05 +0100 Message-Id: <20200124092806.729162357@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200124092806.004582306@linuxfoundation.org> References: <20200124092806.004582306@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Andrii Nakryiko commit 4ee1135615713387b869dfd099ffdf8656be6784 upstream. Fix a potential overflow issue found by LGTM analysis, based on Github libbpf source code. Fixes: 3d65014146c6 ("bpf: libbpf: Add btf_line_info support to libbpf") Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20191107020855.3834758-3-andriin@fb.com Signed-off-by: Greg Kroah-Hartman --- tools/lib/bpf/bpf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/tools/lib/bpf/bpf.c +++ b/tools/lib/bpf/bpf.c @@ -189,7 +189,7 @@ static void * alloc_zero_tailing_info(const void *orecord, __u32 cnt, __u32 actual_rec_size, __u32 expected_rec_size) { - __u64 info_len = actual_rec_size * cnt; + __u64 info_len = (__u64)actual_rec_size * cnt; void *info, *nrecord; int i;