From: Dmitry Tikhov <d.tihov@xxxxxxxxx>
Current implementation have problem in the read part of copy command.
Because there is no metadata mangling before nvme_dif_check invocation,
reftag error could be thrown for blocks of namespace that have not been
previously written to.
Signed-off-by: Dmitry Tikhov <d.tihov@xxxxxxxxx>
Reviewed-by: Klaus Jensen <k.jensen@xxxxxxxxxxx>
Signed-off-by: Klaus Jensen <k.jensen@xxxxxxxxxxx>
---
hw/nvme/ctrl.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
index 74540a03d518..08574c4dcbc8 100644
--- a/hw/nvme/ctrl.c
+++ b/hw/nvme/ctrl.c
@@ -2787,6 +2787,10 @@ static void nvme_copy_in_completed_cb(void *opaque, int ret)
size_t mlen = nvme_m2b(ns, nlb);
uint8_t *mbounce = iocb->bounce + nvme_l2b(ns, nlb);
+ status = nvme_dif_mangle_mdata(ns, mbounce, mlen, slba);
+ if (status) {
+ goto invalid;
+ }
status = nvme_dif_check(ns, iocb->bounce, len, mbounce, mlen, prinfor,
slba, apptag, appmask, &reftag);
if (status) {
--
2.36.1
