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 C306736B061; Mon, 27 Apr 2026 13:34:13 +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=1777296853; cv=none; b=I5ffG4lK3yDZbES0FaUcUP4H1RJWYqcepoY7UhiKkHx7O9fL/Zz1Z7q315bI0Ii85cGn6Z4e4LTpzli2hD3y+cTIZu9jQCVpyNSYVrFqVST+kvUcw1qENt5ZNvWbRRMNtbyqQJtK4Vuy+aXazw7+uWdHdLD41ISH5BAb88JGJnQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777296853; c=relaxed/simple; bh=1aWTbIbaCSHlvMHm8QDsZWgkNtn14T5Y6WWN+DwuFc4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=lody42Mut+dP8HximLuOIPqtNHiRtJlarap164gYSO7VIFhFsXkunSPDv5zZ3yl8pTfQc7dYhx0Pauu/S40ZVUoBDcz3g73eFqABAvMsc49zYlKFXbGPllgTRs0bW/yyhbIY+Xd9u370uLJcfQpj5lCygD184hVaR08wnUxb6/g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rHNjNzOd; 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="rHNjNzOd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2A311C19425; Mon, 27 Apr 2026 13:34:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777296853; bh=1aWTbIbaCSHlvMHm8QDsZWgkNtn14T5Y6WWN+DwuFc4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=rHNjNzOd2jT3nxQiLKK7QhNKx8luuXoldNL1uz/UHwCHFyZCHmcyQDGfrEovSmufu co2H0sfNT5/D0E9jXoUxnkH048xE6xu0q0gGSpBgNH7V3O3K/RZLD445/rj2pQ9PJO zpvZfQXdHy+hFr7ZHNwtGibOa0ACxinRYR1cGJexDqaJFNuqhTBv0k5xMXYRDS+iRo h0uq2hvZEGoM3hCO2M+3YqmQWUVeTaUHRLcyFfPTyNLgHwHueqB/dRV9zXBSGWNfSu s5sUNJE1cEkMJR1N78hCIKMNbxq3UPE+YGoR6WtykKYX60rKg3U9c7eXILyJrXWDke 9W2NnG3CPXSnA== Date: Mon, 27 Apr 2026 15:34:11 +0200 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: Re: linux-next: build failure after merge of the bpf-next tree Message-ID: References: <20260427132604.3754048-1-thierry.reding@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="ieveytj5ntrjzxpi" Content-Disposition: inline In-Reply-To: <20260427132604.3754048-1-thierry.reding@kernel.org> --ieveytj5ntrjzxpi Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: Re: linux-next: build failure after merge of the bpf-next tree MIME-Version: 1.0 On Mon, Apr 27, 2026 at 03:26:01PM +0200, Thierry Reding wrote: > Hi all, >=20 > After merging the bpf-next tree, today's linux-next build (x86_64_perf) > failed like this: >=20 > CC builtin-trace.o > builtin-trace.c: In function =E2=80=98syscall_arg__strtoul_btf_enum= =E2=80=99: > builtin-trace.c:972:27: error: comparison of integer expressions of d= ifferent signedness: =E2=80=98int=E2=80=99 and =E2=80=98__u32=E2=80=99 {aka= =E2=80=98unsigned int=E2=80=99} [-Werror=3Dsign-compare] > 972 | for (int i =3D 0; i < btf_vlen(bt); ++i, ++be) { > | ^ > CC util/btf.o > util/btf.c: In function =E2=80=98__btf_type__find_member_by_name=E2= =80=99: > util/btf.c:19:43: error: comparison of integer expressions of differe= nt signedness: =E2=80=98int=E2=80=99 and =E2=80=98__u32=E2=80=99 {aka =E2= =80=98unsigned int=E2=80=99} [-Werror=3Dsign-compare] > 19 | for (i =3D 0, m =3D btf_members(t); i < btf_vlen(t); = i++, m++) { > | ^ >=20 > Caused by commit >=20 > f7a6b9eaff3e ("bpf: Extend BTF UAPI vlen, kinds to use unused bits") >=20 > I've fixed it up like below, but please fix this in your tree as well. Given that I later saw that the build broke due to the other change and I had to use the old bpf-next tree, this fixup is no longer in the tree but it should still be fixed so that bpf-next can be merged into linux- next again soon. 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