From: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
The Completion Queue Command Identifier is a 16-bit value,
so nvme_submit_command() is unlikely to work on big-endian
hosts, as the relevant bits are truncated.
Fix by using the correct byte-swap function.
Fixes: bdd6a90a9e5 ("block: Add VFIO based NVMe driver")
Reported-by: Keith Busch <kbusch@xxxxxxxxxx>
Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
Reviewed-by: Stefan Hajnoczi <stefanha@xxxxxxxxxx>
Message-id: 20201029093306.1063879-25-philmd@xxxxxxxxxx
Signed-off-by: Stefan Hajnoczi <stefanha@xxxxxxxxxx>
Tested-by: Eric Auger <eric.auger@xxxxxxxxxx>
---
block/nvme.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/nvme.c b/block/nvme.c
index c8ef69cbb2..a06a188d53 100644
--- a/block/nvme.c
+++ b/block/nvme.c
@@ -469,7 +469,7 @@ static void nvme_submit_command(NVMeQueuePair *q, NVMeRequest *req,
assert(!req->cb);
req->cb = cb;
req->opaque = opaque;
- cmd->cid = cpu_to_le32(req->cid);
+ cmd->cid = cpu_to_le16(req->cid);
trace_nvme_submit_command(q->s, q->index, req->cid);
nvme_trace_command(cmd);
--
2.28.0
