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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 37F64C10F14 for ; Thu, 10 Oct 2019 08:43:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0E8ED21D6C for ; Thu, 10 Oct 2019 08:43:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570697017; bh=AFahc8G12K7WvzeCEERC3mW1Z1th2gs47ouNqmHB0wA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=TPaxA1M2vOjZoXnTaW8YJpdU2Nn2r4VNNLF/zuQWW+6X6NZ0aEdFjP0jlZhb2sMLb ra22zWZukierHVTE3rvWGvZuCSO4+58TAgJ+6QPnKVULx8wCUl2WRyDohNQkMso6nt L1dmEb7y6ccBXD/U2F04dUDTQ6mbicXYkfoAPcrA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388758AbfJJInf (ORCPT ); Thu, 10 Oct 2019 04:43:35 -0400 Received: from mail.kernel.org ([198.145.29.99]:48326 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387662AbfJJIna (ORCPT ); Thu, 10 Oct 2019 04:43:30 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 A19572054F; Thu, 10 Oct 2019 08:43:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570697010; bh=AFahc8G12K7WvzeCEERC3mW1Z1th2gs47ouNqmHB0wA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Sc+9X3vQb//tjUPTuy0icNuktk7jqwRz5RGFEFWM381U7MRdoL8bwIB1qYep9RDic AHx4vjVOAkm4mHd69ruYZJYoyGIVRgXgcz3MsWpSAMuVsEGD4f0+hBPwCFmkWmzM+o EHU7DBZXGr1I4OQzk/xQff3O/emiXNNj7jh5LPRg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andrii Nakryiko , Daniel Borkmann , Sasha Levin Subject: [PATCH 5.3 127/148] libbpf: fix false uninitialized variable warning Date: Thu, 10 Oct 2019 10:36:28 +0200 Message-Id: <20191010083619.688232806@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191010083609.660878383@linuxfoundation.org> References: <20191010083609.660878383@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andrii Nakryiko [ Upstream commit aef70a1f44c0b570e6345c02c2d240471859f0a4 ] Some compilers emit warning for potential uninitialized next_id usage. The code is correct, but control flow is too complicated for some compilers to figure this out. Re-initialize next_id to satisfy compiler. Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Signed-off-by: Sasha Levin --- tools/lib/bpf/btf_dump.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c index 7065bb5b27525..e1357dbb16c24 100644 --- a/tools/lib/bpf/btf_dump.c +++ b/tools/lib/bpf/btf_dump.c @@ -1213,6 +1213,7 @@ static void btf_dump_emit_type_chain(struct btf_dump *d, return; } + next_id = decls->ids[decls->cnt - 1]; next_t = btf__type_by_id(d->btf, next_id); multidim = btf_kind_of(next_t) == BTF_KIND_ARRAY; /* we need space if we have named non-pointer */ -- 2.20.1