From: Xiubo Li <xiubli@xxxxxxxxxx> For sparse reading the real length of the data should equal to the total length from the extent array. URL: https://tracker.ceph.com/issues/62081 Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx> Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx> --- net/ceph/osd_client.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 0e629dfd55ee..050dc39065fb 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -5920,6 +5920,12 @@ static int osd_sparse_read(struct ceph_connection *con, fallthrough; case CEPH_SPARSE_READ_DATA: if (sr->sr_index >= count) { + if (sr->sr_datalen && count) { + pr_warn_ratelimited("%s: datalen and extents mismath, %d left\n", + __func__, sr->sr_datalen); + return -EREMOTEIO; + } + sr->sr_state = CEPH_SPARSE_READ_HDR; goto next_op; } @@ -5927,6 +5933,8 @@ static int osd_sparse_read(struct ceph_connection *con, eoff = sr->sr_extent[sr->sr_index].off; elen = sr->sr_extent[sr->sr_index].len; + sr->sr_datalen -= elen; + dout("[%d] ext %d off 0x%llx len 0x%llx\n", o->o_osd, sr->sr_index, eoff, elen); -- 2.39.1
