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 6233F25579 for ; Thu, 18 Jan 2024 14:03:05 +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=1705586586; cv=none; b=tDZ5UIDGeuqz0b07XuYSottJbqmuOLoi8c0aodic5UhxfifOyTBNPfwV+gI9yfLw8CNme9CQNSzsnlS5aqZu95KjLKAUkesmpa0wnBaJIiPcx8wsoKUfHfipsluBuvc73CVQ75OmQREtcpGZD5GJqit9eWVoP94lWewIyuwmhX4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705586586; c=relaxed/simple; bh=VbYr0A7qSd2MJsqRFg9cfzLQgdnzEEQslFGazCGu6dg=; h=Received:DKIM-Signature:Message-ID:Subject:From:To:Cc:Date: In-Reply-To:References:Autocrypt:Content-Type: Content-Transfer-Encoding:User-Agent:MIME-Version; b=H0aQX34yyLaZWusT0M9P8SoI3f3g1JSB2SCDUKBuRidPp9MiRwQUdt4Fry+6T2TuW0pnn8Sug4q6CIo7Xn8sx9l1eOaLODaXWZXaULNN1m1h2VUdBhwusC5yU+5RgsMYSIxxnxFroI7Ubfue3vGtYLujUNa5OF+4Cf01Ie4U2kc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NytF7bwu; 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="NytF7bwu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A892C433C7; Thu, 18 Jan 2024 14:03:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1705586585; bh=VbYr0A7qSd2MJsqRFg9cfzLQgdnzEEQslFGazCGu6dg=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=NytF7bwuThq61rHAbME7+KkeaKBf2Wd6OSWmS+RPLfHCp9iWMee06vqz4pI6tAcYi igNFqQmwSYp2fbk25GaR4s9HkjQb3RC7pytufmbdkXcWHTvMSAAc8jMbXspjo9f8cX emiW/rM8C4IDpexSePAxkoBHlhtesZhYSiA9cxWgENPyPgyIhooVS8bhjpXzsValfA Nj0HPlV2jlqdWuY5lXEBq3+o/6oT+8XlSZUTmerwhvcwOZiG7W1IV+GLXWZGZZrEp3 masZJmhGO8WTV2CNDpRkagCuSD9GZwi0CLuh7IubMxjz9UM3CFtZnMK3rui+goTQII 5CUZLkua8CfWA== Message-ID: Subject: Re: [PATCH v4 1/3] libceph: fail the sparse-read if there still has data in socket From: Jeff Layton To: xiubli@redhat.com, ceph-devel@vger.kernel.org Cc: idryomov@gmail.com, vshankar@redhat.com, mchangir@redhat.com Date: Thu, 18 Jan 2024 09:03:03 -0500 In-Reply-To: <20240118105047.792879-2-xiubli@redhat.com> References: <20240118105047.792879-1-xiubli@redhat.com> <20240118105047.792879-2-xiubli@redhat.com> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; 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 kZWuOsJdJQdmwlWC5L5ln9xgfr/4mOY38B0U= Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.3 (3.50.3-1.fc39) Precedence: bulk X-Mailing-List: ceph-devel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Thu, 2024-01-18 at 18:50 +0800, xiubli@redhat.com wrote: > From: Xiubo Li >=20 > Once this happens that means there have bugs. >=20 > URL: https://tracker.ceph.com/issues/63586 > Signed-off-by: Xiubo Li > --- > net/ceph/osd_client.c | 9 +++++++++ > 1 file changed, 9 insertions(+) >=20 > diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c > index 9be80d01c1dc..f8029b30a3fb 100644 > --- a/net/ceph/osd_client.c > +++ b/net/ceph/osd_client.c > @@ -5912,6 +5912,13 @@ static int osd_sparse_read(struct ceph_connection = *con, > fallthrough; > case CEPH_SPARSE_READ_DATA: > if (sr->sr_index >=3D count) { > + if (sr->sr_datalen) { > + pr_warn_ratelimited("sr_datalen %u sr_index %d count %u\n", > + sr->sr_datalen, sr->sr_index, > + count); > + return -EREMOTEIO; > + } > + Ok, so the server has (presumably) sent us a longer value for the sr_datalen than was in the extent map? Why should the sparse read engine care about that? It was (presumably) able to do its job of handling the read. Why not just advance past the extra junk and try to do another sparse read? Do we really need to fail the op for this? > sr->sr_state =3D CEPH_SPARSE_READ_HDR; > goto next_op; > } > @@ -5919,6 +5926,8 @@ static int osd_sparse_read(struct ceph_connection *= con, > eoff =3D sr->sr_extent[sr->sr_index].off; > elen =3D sr->sr_extent[sr->sr_index].len; > =20 > + sr->sr_datalen -=3D elen; > + > dout("[%d] ext %d off 0x%llx len 0x%llx\n", > o->o_osd, sr->sr_index, eoff, elen); > =20 --=20 Jeff Layton