From: Dmitry Tikhov <ddtikhov@xxxxxxxxx>
Since nlbas is of type int, it does not work with large namespace size
values, e.g., 9 TB size of file backing namespace and 8 byte metadata
with 4096 bytes lbasz gives negative nlbas value, which is later
promoted to negative int64_t type value and results in negative
ns->moff which breaks namespace
Signed-off-by: Dmitry Tikhov <ddtikhov@xxxxxxxxx>
Reviewed-by: Klaus Jensen <k.jensen@xxxxxxxxxxx>
Signed-off-by: Klaus Jensen <k.jensen@xxxxxxxxxxx>
---
hw/nvme/ns.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c
index 324f53ea0cd1..af6504fad2d8 100644
--- a/hw/nvme/ns.c
+++ b/hw/nvme/ns.c
@@ -29,7 +29,8 @@ void nvme_ns_init_format(NvmeNamespace *ns)
{
NvmeIdNs *id_ns = &ns->id_ns;
BlockDriverInfo bdi;
- int npdg, nlbas, ret;
+ int npdg, ret;
+ int64_t nlbas;
ns->lbaf = id_ns->lbaf[NVME_ID_NS_FLBAS_INDEX(id_ns->flbas)];
ns->lbasz = 1 << ns->lbaf.ds;
@@ -42,7 +43,7 @@ void nvme_ns_init_format(NvmeNamespace *ns)
id_ns->ncap = id_ns->nsze;
id_ns->nuse = id_ns->ncap;
- ns->moff = (int64_t)nlbas << ns->lbaf.ds;
+ ns->moff = nlbas << ns->lbaf.ds;
npdg = ns->blkconf.discard_granularity / ns->lbasz;
--
2.36.1
