From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:51836 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755290AbeCVNHt (ORCPT ); Thu, 22 Mar 2018 09:07:49 -0400 Subject: Patch "libbpf: prefer global symbols as bpf program name source" has been added to the 4.15-stable tree To: guro@fb.com, alexander.levin@microsoft.com, ast@kernel.org, daniel@iogearbox.net, dsahern@gmail.com, gregkh@linuxfoundation.org, jakub.kicinski@netronome.com, kafai@fb.com, quentin.monnet@netronome.com Cc: , From: Date: Thu, 22 Mar 2018 14:07:16 +0100 Message-ID: <152172403620376@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled libbpf: prefer global symbols as bpf program name source to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: libbpf-prefer-global-symbols-as-bpf-program-name-source.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Thu Mar 22 14:03:39 CET 2018 From: Roman Gushchin Date: Wed, 13 Dec 2017 15:18:52 +0000 Subject: libbpf: prefer global symbols as bpf program name source From: Roman Gushchin [ Upstream commit fe4d44b23f6b38194a92c6b8a50d921a071c4db4 ] Libbpf picks the name of the first symbol in the corresponding elf section to use as a program name. But without taking symbol's scope into account it may end's up with some local label as a program name. E.g.: $ bpftool prog 1: type 15 name LBB0_10 tag 0390a5136ba23f5c loaded_at Dec 07/17:22 uid 0 xlated 456B not jited memlock 4096B Fix this by preferring global symbols as program name. For instance: $ bpftool prog 1: type 15 name bpf_prog1 tag 0390a5136ba23f5c loaded_at Dec 07/17:26 uid 0 xlated 456B not jited memlock 4096B Signed-off-by: Roman Gushchin Cc: Alexei Starovoitov Cc: Daniel Borkmann Cc: Jakub Kicinski Cc: Martin KaFai Lau Cc: Quentin Monnet Cc: David Ahern Signed-off-by: Daniel Borkmann Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- tools/lib/bpf/libbpf.c | 2 ++ 1 file changed, 2 insertions(+) --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -387,6 +387,8 @@ bpf_object__init_prog_names(struct bpf_o continue; if (sym.st_shndx != prog->idx) continue; + if (GELF_ST_BIND(sym.st_info) != STB_GLOBAL) + continue; name = elf_strptr(obj->efile.elf, obj->efile.strtabidx, Patches currently in stable-queue which might be from guro@fb.com are queue-4.15/libbpf-prefer-global-symbols-as-bpf-program-name-source.patch queue-4.15/bpf-cgroup-fix-a-verification-error-for-a-cgroup_device-type-prog.patch