Commit 6b900365 authored by Ismail, Mustafa's avatar Ismail, Mustafa Committed by Doug Ledford

RDMA/i40iw: Fix overflow of region length

Change region_length to u64 as a region can be > 4GB.
Signed-off-by: default avatarMustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent e29bff46
......@@ -102,6 +102,8 @@ enum i40iw_device_capabilities_const {
#define I40IW_STAG_INDEX_FROM_STAG(stag) (((stag) && 0xFFFFFF00) >> 8)
#define I40IW_MAX_MR_SIZE 0x10000000000L
struct i40iw_qp_uk;
struct i40iw_cq_uk;
struct i40iw_srq_uk;
......
......@@ -1526,14 +1526,16 @@ static struct ib_mr *i40iw_reg_user_mr(struct ib_pd *pd,
struct i40iw_mr *iwmr;
struct ib_umem *region;
struct i40iw_mem_reg_req req;
u32 pbl_depth = 0;
u64 pbl_depth = 0;
u32 stag = 0;
u16 access;
u32 region_length;
u64 region_length;
bool use_pbles = false;
unsigned long flags;
int err = -ENOSYS;
if (length > I40IW_MAX_MR_SIZE)
return ERR_PTR(-EINVAL);
region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
if (IS_ERR(region))
return (struct ib_mr *)region;
......@@ -1564,7 +1566,7 @@ static struct ib_mr *i40iw_reg_user_mr(struct ib_pd *pd,
palloc = &iwpbl->pble_alloc;
iwmr->type = req.reg_type;
iwmr->page_cnt = pbl_depth;
iwmr->page_cnt = (u32)pbl_depth;
switch (req.reg_type) {
case IW_MEMREG_TYPE_QP:
......
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