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=-19.1 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, URIBL_BLOCKED,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 A725BC433F5 for ; Mon, 13 Sep 2021 14:36:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 90A6860F11 for ; Mon, 13 Sep 2021 14:36:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346223AbhIMOh5 (ORCPT ); Mon, 13 Sep 2021 10:37:57 -0400 Received: from mail.kernel.org ([198.145.29.99]:55970 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242968AbhIMOfx (ORCPT ); Mon, 13 Sep 2021 10:35:53 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8376661BE2; Mon, 13 Sep 2021 13:53:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1631541230; bh=cgd4lvp8ET4FpQcD9aMt+wZ5XqW2kd5Gg/QmI8LlYZ0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xZi4KNdJ3EA1R0zP5ksJAYnVdXf+yGMcVT3jYQU1mcFHFIUgaHW+PTgTfuhVe4Lf5 PJPWaU6z3c71nvjiJA/6x5BLTGJWp5xAiFi54GbR669/0GPC/M4SM4BmcscMQhknYR 7ctIH+Rry/Js9zLh67U05haOe39BVq75UI/6kTUs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andrii Nakryiko , Daniel Borkmann , Yonghong Song , Sasha Levin Subject: [PATCH 5.14 216/334] libbpf: Re-build libbpf.so when libbpf.map changes Date: Mon, 13 Sep 2021 15:14:30 +0200 Message-Id: <20210913131120.725012358@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210913131113.390368911@linuxfoundation.org> References: <20210913131113.390368911@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: Andrii Nakryiko [ Upstream commit 61c7aa5020e98ac2fdcf07d07eec1baf2e9f0a08 ] Ensure libbpf.so is re-built whenever libbpf.map is modified. Without this, changes to libbpf.map are not detected and versioned symbols mismatch error will be reported until `make clean && make` is used, which is a suboptimal developer experience. Fixes: 306b267cb3c4 ("libbpf: Verify versioned symbols") Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/20210815070609.987780-8-andrii@kernel.org Signed-off-by: Sasha Levin --- tools/lib/bpf/Makefile | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile index ec14aa725bb0..74c3b73a5fbe 100644 --- a/tools/lib/bpf/Makefile +++ b/tools/lib/bpf/Makefile @@ -4,8 +4,9 @@ RM ?= rm srctree = $(abs_srctree) +VERSION_SCRIPT := libbpf.map LIBBPF_VERSION := $(shell \ - grep -oE '^LIBBPF_([0-9.]+)' libbpf.map | \ + grep -oE '^LIBBPF_([0-9.]+)' $(VERSION_SCRIPT) | \ sort -rV | head -n1 | cut -d'_' -f2) LIBBPF_MAJOR_VERSION := $(firstword $(subst ., ,$(LIBBPF_VERSION))) @@ -110,7 +111,6 @@ SHARED_OBJDIR := $(OUTPUT)sharedobjs/ STATIC_OBJDIR := $(OUTPUT)staticobjs/ BPF_IN_SHARED := $(SHARED_OBJDIR)libbpf-in.o BPF_IN_STATIC := $(STATIC_OBJDIR)libbpf-in.o -VERSION_SCRIPT := libbpf.map BPF_HELPER_DEFS := $(OUTPUT)bpf_helper_defs.h LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET)) @@ -163,10 +163,10 @@ $(BPF_HELPER_DEFS): $(srctree)/tools/include/uapi/linux/bpf.h $(OUTPUT)libbpf.so: $(OUTPUT)libbpf.so.$(LIBBPF_VERSION) -$(OUTPUT)libbpf.so.$(LIBBPF_VERSION): $(BPF_IN_SHARED) +$(OUTPUT)libbpf.so.$(LIBBPF_VERSION): $(BPF_IN_SHARED) $(VERSION_SCRIPT) $(QUIET_LINK)$(CC) $(LDFLAGS) \ --shared -Wl,-soname,libbpf.so.$(LIBBPF_MAJOR_VERSION) \ - -Wl,--version-script=$(VERSION_SCRIPT) $^ -lelf -lz -o $@ + -Wl,--version-script=$(VERSION_SCRIPT) $< -lelf -lz -o $@ @ln -sf $(@F) $(OUTPUT)libbpf.so @ln -sf $(@F) $(OUTPUT)libbpf.so.$(LIBBPF_MAJOR_VERSION) @@ -181,7 +181,7 @@ $(OUTPUT)libbpf.pc: check: check_abi -check_abi: $(OUTPUT)libbpf.so +check_abi: $(OUTPUT)libbpf.so $(VERSION_SCRIPT) @if [ "$(GLOBAL_SYM_COUNT)" != "$(VERSIONED_SYM_COUNT)" ]; then \ echo "Warning: Num of global symbols in $(BPF_IN_SHARED)" \ "($(GLOBAL_SYM_COUNT)) does NOT match with num of" \ -- 2.30.2