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 7FC375A7B8; Wed, 25 Sep 2024 16:53:40 +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=1727283220; cv=none; b=OXeMgu4uYsruj2KpnNePUnW6BvyieBjMjDsYn1dpWUn34ycWKUpWbdVcdXkvHm6EZtAmIMzLeo1MyEHcmERmIQ81KTsv29IN0RbEPgX5ONg+81twhXOM4Ix4HHKKEYwtLLdvtOIlqDrakwRHXJKuwmSmpog7jFliVXlQrYvTdM4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727283220; c=relaxed/simple; bh=pL8xWD03FhNjqjk7gaMHI8yO4abRLTp3egqJzbLaHeg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ZryXn/9LAW8P+UcLZLTWeaa/MKVGI+7yZa9vm4oZ9vOXV9mLQS7slQEL+icZHxS/0+tKnEPL6g6rTuHOy0p6aOhcb0fxely6RNKnzmCLsrVhivfx6EDaSEcMtPF4/80VBcNVQHzbad4Bmp/vuPB/KzJK/dlXpSv6NpXUzuEGCnA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZhNY2DKW; 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="ZhNY2DKW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E0EC3C4CEC9; Wed, 25 Sep 2024 16:53:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727283220; bh=pL8xWD03FhNjqjk7gaMHI8yO4abRLTp3egqJzbLaHeg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ZhNY2DKWQraTWxejG+cGNziDjkC0jXHRqp+wiY1u2rbw8foZf7nKi6sidFqxwFWfI UnnewMlQFLlx2l9P1afdpS72jChBrzm+/HRW1w3UB1i5nR45TsmnAnfuxm4qLXrSrT wlynyxl1yy85KXdsfERCgPYAuP8sbLGGISu44KNR4IBHH8Jszt1ImDDK8jBD3DSUlE UIxzHvJiVSdUXEf3+8qP8fAR+B9LTQ47tQYWH6ePNXXsPbfGUriUrd9VeSOCLnupZW s9cbELKRCtBMJVuY5s1igfdaVPgeAhOsyXkN8ukwSrtxT9nH1/+DO5x27CpD9Cwx54 eQSwoLYQC1iSw== Date: Wed, 25 Sep 2024 16:53:38 +0000 From: Eric Biggers To: Jarkko Sakkinen Cc: Milan Broz , Mikulas Patocka , luca.boccassi@gmail.com, dm-devel@lists.linux.dev, snitzer@kernel.org, serge@hallyn.com, wufan@linux.microsoft.com, David Howells , keyrings@vger.kernel.org, linux-integrity@vger.kernel.org, Mimi Zohar Subject: Re: [PATCH] dm verity: fallback to platform keyring also if key in trusted keyring is rejected Message-ID: <20240925165338.GA3738787@google.com> 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> Precedence: bulk X-Mailing-List: linux-integrity@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 :-) > > Np, it's just that last and only time I've ever read anything about > dm-verity was 2011 article :-) > > I will rephrase question: does dm-verity have a user? ;-) > > BR, Jarkko Sorry if I was unclear. dm-verity is widely used, including by all Android and Chrome OS devices. But this patch is about dm-verity's in-kernel signature verification which is an optional sub-feature that is not widely used. That sub-feature is apparently difficult to test and not clearly specified, which is why people seem to be struggling a bit with this patch. - Eric