From 321e3c3de53c7530cd518219d01f04e7e32a9d23 Mon Sep 17 00:00:00 2001 From: Xiubo Li Date: Wed, 6 Mar 2024 09:05:44 +0800 Subject: [PATCH] libceph: init the cursor when preparing sparse read in msgr2 The cursor is no longer initialized in the OSD client, causing the sparse read state machine to fall into an infinite loop. The cursor should be initialized in IN_S_PREPARE_SPARSE_DATA state. [ idryomov: use msg instead of con->in_msg, changelog ] Link: https://tracker.ceph.com/issues/64607 Fixes: 8e46a2d068c9 ("libceph: just wait for more data to be available on the socket") Signed-off-by: Xiubo Li Reviewed-by: Ilya Dryomov Tested-by: Luis Henriques Signed-off-by: Ilya Dryomov --- 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..bd608ffa0627 100644 --- a/net/ceph/messenger_v2.c +++ b/net/ceph/messenger_v2.c @@ -2034,6 +2034,9 @@ 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, msg, + msg->sparse_read_total); + reset_in_kvecs(con); con->v2.in_state = IN_S_PREPARE_SPARSE_DATA_CONT; con->v2.data_len_remain = data_len(msg);