From: Xiubo Li <xiubli@xxxxxxxxxx> Once this happens that means there have bugs. URL: https://tracker.ceph.com/issues/63586 Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx> Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx> --- net/ceph/osd_client.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 9be80d01c1dc..837b69541376 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -5857,8 +5857,8 @@ static int osd_sparse_read(struct ceph_connection *con, struct ceph_osd *o = con->private; struct ceph_sparse_read *sr = &o->o_sparse_read; u32 count = sr->sr_count; - u64 eoff, elen; - int ret; + u64 eoff, elen, len = 0; + int i, ret; switch (sr->sr_state) { case CEPH_SPARSE_READ_HDR: @@ -5909,6 +5909,13 @@ static int osd_sparse_read(struct ceph_connection *con, /* Convert sr_datalen to host-endian */ sr->sr_datalen = le32_to_cpu((__force __le32)sr->sr_datalen); sr->sr_state = CEPH_SPARSE_READ_DATA; + for (i = 0; i < count; i++) + len += sr->sr_extent[i].len; + if (sr->sr_datalen != len) { + pr_warn_ratelimited("data len %u != extent len %llu\n", + sr->sr_datalen, len); + return -EREMOTEIO; + } fallthrough; case CEPH_SPARSE_READ_DATA: if (sr->sr_index >= count) { -- 2.43.0
