1 files changed, 4 insertions, 0 deletions
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index c1323ca..32c35fe 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -1026,6 +1026,10 @@ static uint16_t nvme_io_cmd(NvmeCtrl *n, NvmeRequest *req)
     trace_pci_nvme_io_cmd(nvme_cid(req), nsid, nvme_sqid(req),
                           req->cmd.opcode, nvme_io_opc_str(req->cmd.opcode));
 
+    if (NVME_CC_CSS(n->bar.cc) == NVME_CC_CSS_ADMIN_ONLY) {
+        return NVME_INVALID_OPCODE | NVME_DNR;
+    }
+
     if (!nvme_nsid_valid(n, nsid)) {
         return NVME_INVALID_NSID | NVME_DNR;
     }