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charset="utf-8" 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 Reviewed-by: Klaus Jensen --- 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 324f53ea0c..af6504fad2 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 =3D &ns->id_ns; BlockDriverInfo bdi; - int npdg, nlbas, ret; + int npdg, ret; + int64_t nlbas; =20 ns->lbaf =3D id_ns->lbaf[NVME_ID_NS_FLBAS_INDEX(id_ns->flbas)]; ns->lbasz =3D 1 << ns->lbaf.ds; @@ -42,7 +43,7 @@ void nvme_ns_init_format(NvmeNamespace *ns) id_ns->ncap =3D id_ns->nsze; id_ns->nuse =3D id_ns->ncap; =20 - ns->moff =3D (int64_t)nlbas << ns->lbaf.ds; + ns->moff =3D nlbas << ns->lbaf.ds; =20 npdg =3D ns->blkconf.discard_granularity / ns->lbasz; =20 --=20 2.35.1