From patchwork Thu Feb 29 04:19:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiubo Li X-Patchwork-Id: 776902 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 EFB0C376E4 for ; Thu, 29 Feb 2024 04:22:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709180531; cv=none; b=SX5sxBgrfNKoD9OoaE+Dh3XzM9ZGK7PBT02M+mi6qLG2dJH+aUS91YgsJzAdtDQjAt5k+b18RwVKcOUoh360BsJj7rSqAzcXdl2Vdi6XaEr+yUdd+P/BFki5uBy9Rnin5MLg9rt1s08KTHtEWJdo9mkPvL5PXxoRVfBMflLteW4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709180531; c=relaxed/simple; bh=kKaaxdsU82qdSqRsR3fpq8hi38e/VeQJB9GbIdITGGo=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=pNR1LY5tYJjB3Me52CDL1k1VvoVH2KfbnQtDtH3nHYm6VOXhwcrsaRo4s4TUA01lFkD+tt70JAuYzYGr0E82t/Q9dEN4YhaRlqvtj3JUg8RGV4zLixBKCa7GCrLwsDNdfze/MIOnLZLK0QBSBldSNVojovWY9bN1CiyaXIAa7lc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=bpUyTEnu; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="bpUyTEnu" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1709180528; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=wX2/lKIfWZcCklNHF8a+xGBkRbnPqe+dovfkPOWmCCY=; b=bpUyTEnuwNsgV8D3JQwGFkguWvADeJ4ERVQfFhGHIQhWutFdv3LoRNXaQeJEtu/RmD10vP z5sV0GJC3K8KgbsJN2fVdwp8P0wf0Xtdhmgiz4PvuyeQaghvn159sE4B7ixVh1c2VhYEtY a4wiOxb4eolP/S7Vk4fKBeui0BqHxJg= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-384-ofWSeSjdMbeSRDGeOk3qAQ-1; Wed, 28 Feb 2024 23:22:07 -0500 X-MC-Unique: ofWSeSjdMbeSRDGeOk3qAQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id B8CF33C0ED45; Thu, 29 Feb 2024 04:22:06 +0000 (UTC) Received: from li-a71a4dcc-35d1-11b2-a85c-951838863c8d.ibm.com.com (unknown [10.72.112.85]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3504D400D783; Thu, 29 Feb 2024 04:22:02 +0000 (UTC) From: xiubli@redhat.com To: ceph-devel@vger.kernel.org Cc: idryomov@gmail.com, jlayton@kernel.org, vshankar@redhat.com, mchangir@redhat.com, Xiubo Li , stable@vger.kernel.org, Luis Henriques Subject: [PATCH] libceph: init the cursor when preparing the sparse read Date: Thu, 29 Feb 2024 12:19:50 +0800 Message-ID: <20240229041950.738878-1-xiubli@redhat.com> Precedence: bulk X-Mailing-List: ceph-devel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 From: Xiubo Li The osd code has remove cursor initilizing code and this will make the sparse read state into a infinite loop. We should initialize the cursor just before each sparse-read in messnger v2. Cc: stable@vger.kernel.org URL: https://tracker.ceph.com/issues/64607 Fixes: 8e46a2d068c9 ("libceph: just wait for more data to be available on the socket") Reported-by: Luis Henriques Signed-off-by: Xiubo Li Tested-by: Luis Henriques --- net/ceph/messenger_v2.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/ceph/messenger_v2.c b/net/ceph/messenger_v2.c index a0ca5414b333..7ae0f80100f4 100644 --- a/net/ceph/messenger_v2.c +++ b/net/ceph/messenger_v2.c @@ -2025,6 +2025,7 @@ static int prepare_sparse_read_cont(struct ceph_connection *con) static int prepare_sparse_read_data(struct ceph_connection *con) { struct ceph_msg *msg = con->in_msg; + u64 len = con->in_msg->sparse_read_total ? : data_len(con->in_msg); dout("%s: starting sparse read\n", __func__); @@ -2034,6 +2035,8 @@ static int prepare_sparse_read_data(struct ceph_connection *con) if (!con_secure(con)) con->in_data_crc = -1; + ceph_msg_data_cursor_init(&con->v2.in_cursor, con->in_msg, len); + reset_in_kvecs(con); con->v2.in_state = IN_S_PREPARE_SPARSE_DATA_CONT; con->v2.data_len_remain = data_len(msg);