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 A5C555381B; Wed, 25 Sep 2024 17:15:05 +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=1727284505; cv=none; b=TJhNxSmddR7CJia8kgxtUzc1b3YxhT8DYzDNcJ7Kg9zPT9JGTeap7jmIHgNetuL7reDf/OWZdA/pEw62+NoKOeeHVUFhv0uftF+rN6DU66A+tWaIEqq3EJw45/0a6zafuhAqbq8PHI34enw/jyLNrdFOrirIOGhDud1NgozlSZU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727284505; c=relaxed/simple; bh=tK5+n5aRP/WUvnl6ZOG4ND40qDXBwxeR19BWggIH2wM=; h=Mime-Version:Content-Type:Date:Message-Id:Cc:Subject:From:To: References:In-Reply-To; b=Bdw6i/sIjLWNYK6hvPga1Rn/3lH3Io3UbEbonqNw+lPAwprTaQ3AAZbYmkQEVAuHutz65XnTsfSDFn306gB4REjMzGqAPs02MwwIJUBSmsWOja+0N0Om1xiVZmyg4iiisce5mv10fo+fqQo7G6fRxVytAu7xAxHe2WW+7GpKBAw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eL+Bc3Rj; 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="eL+Bc3Rj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B2B09C4CEC3; Wed, 25 Sep 2024 17:15:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727284505; bh=tK5+n5aRP/WUvnl6ZOG4ND40qDXBwxeR19BWggIH2wM=; h=Date:Cc:Subject:From:To:References:In-Reply-To:From; b=eL+Bc3RjsKzligFYMjOV9jZyiWmeJvW2EROFujHdHYmJ4a0OyGbp+e//skYcyhjEH akpizxPdMCz5HJ0qu0Z4LLkErcIHDIt98nHyew1jmgKkFwfc80V9YziMKPim2YkuLO RzXsI6hr7fUPu0/RYxgDDFinM5WHa9lr7bY+ZxBNfs3EX58tOS+/hY0pS0UBIRjUNo IvfzdeJ4vXTyT4ogwhuiY4ZbEfjWBkvSEO/XYX26Yrg05DYxm1YxoQQYuZ4tB+K53z TDukkGwjjqZBSmFqC8qM8Ncr+dNJ3oWAaGtQ7IaYgblsiOlb48t3ZFUCQqbjLxQRfV xiwxiKW69wX1Q== Precedence: bulk X-Mailing-List: linux-integrity@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Wed, 25 Sep 2024 20:15:01 +0300 Message-Id: Cc: "Milan Broz" , "Mikulas Patocka" , , , , , , "David Howells" , , , "Mimi Zohar" Subject: Re: [PATCH] dm verity: fallback to platform keyring also if key in trusted keyring is rejected From: "Jarkko Sakkinen" To: "Eric Biggers" X-Mailer: aerc 0.18.2 References: <20240922161753.244476-1-luca.boccassi@gmail.com> <6b3e0e45-5efe-3032-62b8-75dcd45c879c@redhat.com> <7c40c30a-5154-08eb-d44e-6598087c53e6@redhat.com> <20240924215910.GA1585@sol.localdomain> <20240925165338.GA3738787@google.com> In-Reply-To: <20240925165338.GA3738787@google.com> On Wed Sep 25, 2024 at 7:53 PM EEST, Eric Biggers wrote: > On Wed, Sep 25, 2024 at 12:05:59PM +0300, Jarkko Sakkinen wrote: > > On Wed Sep 25, 2024 at 11:03 AM EEST, Milan Broz wrote: > > > >> Doesn't dm-verity have a maintainer? > > > > > > (This reminds me of a nice comment from Neil about "little walled > > > gardens" between MD & DM. Apparently it applies to other subsystems > > > as well. Sorry, I couldn't resist to mention it :-) > >=20 > > Np, it's just that last and only time I've ever read anything about > > dm-verity was 2011 article :-) > >=20 > > I will rephrase question: does dm-verity have a user? ;-) > >=20 > > BR, Jarkko > > Sorry if I was unclear. dm-verity is widely used, including by all Andro= id and > Chrome OS devices. But this patch is about dm-verity's in-kernel signatu= re > verification which is an optional sub-feature that is not widely used. T= hat > sub-feature is apparently difficult to test and not clearly specified, wh= ich is > why people seem to be struggling a bit with this patch. NP, I learned a new thing ;-) Before Linux I worked with Symbian (ugh) so this whole scheme for doing FW updates is familiar to me from the dark ages... And I acked the change too! > - Eric BR, Jarkko