From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) (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 F082B135417; Wed, 18 Sep 2024 22:21:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=150.107.74.76 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726698087; cv=none; b=GEwQljWLCaObjWB5FY8rLXd8oTIkNlu2lbYlQaq4daQi1SKQb3oxZes0nO3RvpOj7nEz2c0gUJPfqb1OdDPTEUA4BkCiOgIVQYmnfNFtAFiosQpn68Id0tiNGL1kJs644ASaQ2yJ6Rwf86dG1gb5M+h/+4PS/Bw/9SPw30sLUd8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726698087; c=relaxed/simple; bh=7xxtcRpF4R66w2NfdU0SK8nXAs9BUflMxIdh+H7lVVo=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ZCGh7CMvqE296xjIJWlrwYIvMZK+BZ7nsKAAM/0F3RU2LbKUE4/V7Bdsn2W1i+Gk3ULwnNhlSJYhasY9EQQQw1/GwZZJtEVe/CQ5WI7bs3Aagxqg9sw4uHs4UzzlHh8u5d6Llif908wUMR7v1vkCZeKYY5zmWving4BjuyO/qcM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=canb.auug.org.au; spf=pass smtp.mailfrom=canb.auug.org.au; dkim=pass (2048-bit key) header.d=canb.auug.org.au header.i=@canb.auug.org.au header.b=vBjv8JFl; arc=none smtp.client-ip=150.107.74.76 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=canb.auug.org.au Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=canb.auug.org.au Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=canb.auug.org.au header.i=@canb.auug.org.au header.b="vBjv8JFl" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canb.auug.org.au; s=201702; t=1726698081; bh=5lCtcuCkhi/lgem1awfWyx6ufZyO7pMFNsOkMnt053M=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=vBjv8JFl4iSqVemH+1y4+q5TQZbw3A4jcbylrzAOH74uHY5cVEOdOecL8DrUXu6yG /trV8qEevzOJbERt6tkhrNCZu7vjI6Ad8oNuaOQDyj9s0bTo5vyVykdBAzMCDxhVIO 1Z8xvVGGx0sDSUWGB4QISjjzywEpJwSrLb1MTBZSdXbA1lfPAhAYSBewYZijWzZQs1 BUh8NMjzI4wcuw8otN2VWHD0KvoygBKcdFfneJekjA/ftI7otWquadDZb4HEQ3yors 7qjSn2Ol2GPupCJd0SO4awoOtJpGD52opkAeAqGOtD7tNod0zOF3C2sahSzg+zk8sg Cf/lYTPsBnwrw== Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mail.ozlabs.org (Postfix) with ESMTPSA id 4X8CmJ4MYrz4xZg; Thu, 19 Sep 2024 08:21:20 +1000 (AEST) Date: Thu, 19 Sep 2024 08:21:19 +1000 From: Stephen Rothwell To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Peter Zijlstra Cc: Kan Liang , Linux Kernel Mailing List , Linux Next Mailing List Subject: Re: linux-next: build warning after merge of the tip tree Message-ID: <20240919082119.62324e11@canb.auug.org.au> In-Reply-To: <20240911153854.240bbc1f@canb.auug.org.au> References: <20240911153854.240bbc1f@canb.auug.org.au> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/BTQau+RYdUMM3KU93.YKo1p"; protocol="application/pgp-signature"; micalg=pgp-sha256 --Sig_/BTQau+RYdUMM3KU93.YKo1p Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi all, On Wed, 11 Sep 2024 15:38:54 +1000 Stephen Rothwell = wrote: > > After merging the tip tree, today's linux-next build (arm > multi_v7_defconfig) produced this warning: >=20 > kernel/events/core.c: In function 'perf_event_setup_cpumask': > kernel/events/core.c:14012:13: warning: the comparison will always evalua= te as 'true' for the address of 'thread_sibling' will never be NULL [-Waddr= ess] > 14012 | if (!topology_sibling_cpumask(cpu)) { > | ^ > In file included from include/linux/topology.h:30, > from include/linux/gfp.h:8, > from include/linux/xarray.h:16, > from include/linux/list_lru.h:14, > from include/linux/fs.h:13, > from kernel/events/core.c:11: > include/linux/arch_topology.h:78:19: note: 'thread_sibling' declared here > 78 | cpumask_t thread_sibling; > | ^~~~~~~~~~~~~~ >=20 > Introduced by commit >=20 > 4ba4f1afb6a9 ("perf: Generic hotplug support for a PMU with a scope") This commit is now in Linus' tree and the warning is till there :-( In fact this is a build failure for some configurations. A fix was posted on Sep 13 (12?), please get it to Linus as soon as possible. --=20 Cheers, Stephen Rothwell --Sig_/BTQau+RYdUMM3KU93.YKo1p Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAmbrUl8ACgkQAVBC80lX 0Gz9eAgAiVtKDkXJ3YcxqLgPevwMe62P9hQRkfaJcx5tsNYWS6s6dLTO4HbOq5dF E9o0ZqWf4y1nDAmP5k/6LRNgm2/k22w2P93brMMoGq3SxMfdBlcxD1ctZkyvyRVf I260FjxYlES10JInZnTQP+lRjEELdiIzHvAnrGyIEK7qowo+zrePnIWgjdzQJ7fp flSxUA2Ayqfl8uJVmt33nXaG6kwrdfH505MQYKEHDpZhUr421YjKEWuzhI48PvKv E9R7K2PdKAQDEIak66wQp3L7X8triuf84Lb3YKyzlP1cgglLizFLBNGaax0PF1dV 4fvuxlE5O0LPAVRAl4JXr6vPeS1wGw== =VLe8 -----END PGP SIGNATURE----- --Sig_/BTQau+RYdUMM3KU93.YKo1p--