From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6D6D33B961E; Mon, 27 Apr 2026 13:26:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777296371; cv=none; b=Qk4oin3PGMmdA+ZKV++BgpSZcjXShfUYEw0qcDzjQqMcQuyHu9YL6sKSYf0j2vX7OY5RVwVvUBiQw1O8DG1RVHSJRc/7d13Ll6qXTija3wK0Oct9XoIbBxXCRQWCQx/M5lNFG/ahEQUBcOwWbpz9CCPDKAD9CFcAHdH82fRhf2c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777296371; c=relaxed/simple; bh=PNFp6YrNI1bQfBLs81TTKtIKSQgAWu5W7GiOidP85qw=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=rd2yiKmv0xAvEBU+rWlGeqet2dReI6tcoK4oPKAwHovbtx1fRJ6H/lSod/i8hqBEGgLnp1wCP5TW+0SejlyEakG2W8fJZ8lULHGBuiqipk80IWmOVM9IFmKDj3G6QJgiDd2rsOpEipdf4NuS4qwpCwRnB+qntze9DzEEgc50lac= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rez/yuzY; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="rez/yuzY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B0845C19425; Mon, 27 Apr 2026 13:26:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777296371; bh=PNFp6YrNI1bQfBLs81TTKtIKSQgAWu5W7GiOidP85qw=; h=From:To:Cc:Subject:Date:From; b=rez/yuzYCaamcFyGsmogoa6J95EmfW2+T55Lxy3vwhxg7KD9z3YBmdeYFh08gdvFR nTjenbwfV4Bclg7mo3VnEqsgTHxMotx8m18EoWkiFoEjPzoUMgvXg9frwzVqw/UnJX Rvhsx83tx9mItHft7vbRGymyQb2eOnuwQyRfyQe9SzIupqQ+i80iTQvcwNrk7IOvXS YBnZO61GoUvh0gr6NRLhg4JSmshAHRXw+J9xOkovTzeNcAKOjcR8WnL/BuotwgKB9F aXQamG7tBWBmipZEvzeQ94nYd7D8lgo9VeoGEEqsFjo0BQNXrovI9NWoqaBEjqbxkd XjkpbvrI7cq1w== From: Thierry Reding To: Daniel Borkmann , Alexei Starovoitov , Andrii Nakryiko Cc: linux-kernel@vger.kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-next@vger.kernel.org Subject: linux-next: build failure after merge of the bpf-next tree Date: Mon, 27 Apr 2026 15:26:01 +0200 Message-ID: <20260427132604.3754048-1-thierry.reding@kernel.org> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi all, After merging the bpf-next tree, today's linux-next build (x86_64_perf) failed like this: CC builtin-trace.o builtin-trace.c: In function ‘syscall_arg__strtoul_btf_enum’: builtin-trace.c:972:27: error: comparison of integer expressions of different signedness: ‘int’ and ‘__u32’ {aka ‘unsigned int’} [-Werror=sign-compare] 972 | for (int i = 0; i < btf_vlen(bt); ++i, ++be) { | ^ CC util/btf.o util/btf.c: In function ‘__btf_type__find_member_by_name’: util/btf.c:19:43: error: comparison of integer expressions of different signedness: ‘int’ and ‘__u32’ {aka ‘unsigned int’} [-Werror=sign-compare] 19 | for (i = 0, m = btf_members(t); i < btf_vlen(t); i++, m++) { | ^ Caused by commit f7a6b9eaff3e ("bpf: Extend BTF UAPI vlen, kinds to use unused bits") I've fixed it up like below, but please fix this in your tree as well. Thanks, Thierry --- >8 --- >From 4689669414ed7de19a69803714bc04e96fd82618 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 27 Apr 2026 12:32:06 +0200 Subject: [PATCH] perf: Fixup for btf_vlan() API change Signed-off-by: Thierry Reding --- tools/perf/builtin-trace.c | 2 +- tools/perf/util/btf.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index e58c49d047a2..d22e20a57b70 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -969,7 +969,7 @@ static bool syscall_arg__strtoul_btf_enum(char *bf, size_t size, struct syscall_ struct btf *btf = arg->trace->btf; struct btf_enum *be = btf_enum(bt); - for (int i = 0; i < btf_vlen(bt); ++i, ++be) { + for (u32 i = 0; i < btf_vlen(bt); ++i, ++be) { const char *name = btf__name_by_offset(btf, be->name_off); int max_len = max(size, strlen(name)); diff --git a/tools/perf/util/btf.c b/tools/perf/util/btf.c index bb163fe87767..50d98f3e83bf 100644 --- a/tools/perf/util/btf.c +++ b/tools/perf/util/btf.c @@ -14,7 +14,7 @@ const struct btf_member *__btf_type__find_member_by_name(struct btf *btf, { const struct btf_type *t = btf__type_by_id(btf, type_id); const struct btf_member *m; - int i; + u32 i; for (i = 0, m = btf_members(t); i < btf_vlen(t); i++, m++) { const char *current_member_name = btf__name_by_offset(btf, m->name_off); -- 2.52.0 --- >8 ---