Fix coverity issue for potentially overflowing of page size

Change-Id: I2779626d745badb63386efcf729da7a094a4f297
Signed-off-by: Haiyang Tan <haiyangtan@tencent.com>

6 files changed, 11 insertions, 10 deletions

diff --git a/src/plugins/dpdk/buffer.c b/src/plugins/dpdk/buffer.c
index edace2aaf61..bb177fc6772 100644
--- a/src/plugins/dpdk/buffer.c
+++ b/src/plugins/dpdk/buffer.c
@@ -465,7 +465,7 @@ dpdk_pool_create (vlib_main_t * vm, u8 * pool_name, u32 elt_size,
 
   for (i = 0; i < pr->n_pages; i++)
     {
-      size_t page_size = 1 << pr->log2_page_size;
+      size_t page_size = 1ull << pr->log2_page_size;
       ret = rte_mempool_populate_iova (mp, ((char *) pr->mem) + i * page_size,
 				       pr->page_table[i], page_size, 0, 0);
       if (ret < 0)
@@ -493,8 +493,8 @@ dpdk_pool_create (vlib_main_t * vm, u8 * pool_name, u32 elt_size,
       /* *INDENT-OFF* */
       vec_foreach_index (i, pr->page_table)
 	{
-	  dm.vaddr = pointer_to_uword (pr->mem) + (i << pr->log2_page_size);
-	  dm.size = 1 << pr->log2_page_size;
+	  dm.vaddr = pointer_to_uword (pr->mem) + ((u64)i << pr->log2_page_size);
+	  dm.size = 1ull << pr->log2_page_size;
 	  dm.iova = pr->page_table[i];
 	  if ((rv = ioctl (dbm->vfio_container_fd, VFIO_IOMMU_MAP_DMA, &dm)))
 	    break;
diff --git a/src/svm/ssvm.c b/src/svm/ssvm.c
index 03451e66d15..7fa9b258729 100644
--- a/src/svm/ssvm.c
+++ b/src/svm/ssvm.c
@@ -248,7 +248,7 @@ ssvm_master_init_memfd (ssvm_private_t * memfd)
   memfd->my_pid = getpid ();
   memfd->i_am_master = 1;
 
-  page_size = 1 << alloc.log2_page_size;
+  page_size = 1ull << alloc.log2_page_size;
   sh = memfd->sh;
   sh->master_pid = memfd->my_pid;
   sh->ssvm_size = memfd->ssvm_size;
diff --git a/src/vlib/buffer.c b/src/vlib/buffer.c
index a704efb40f4..785fa9b8aac 100644
--- a/src/vlib/buffer.c
+++ b/src/vlib/buffer.c
@@ -910,7 +910,7 @@ vlib_buffer_pool_create (vlib_main_t * vm, vlib_physmem_region_index_t pri,
 
   p->log2_page_size = pr->log2_page_size;
   p->buffer_size = buffer_size;
-  p->buffers_per_page = (1 << pr->log2_page_size) / p->buffer_size;
+  p->buffers_per_page = (1ull << pr->log2_page_size) / p->buffer_size;
   p->n_elts = p->buffers_per_page * pr->n_pages;
   p->n_used = 0;
   clib_spinlock_init (&p->lock);
diff --git a/src/vlib/linux/physmem.c b/src/vlib/linux/physmem.c
index 4d16486dea1..dbc4c549a99 100755
--- a/src/vlib/linux/physmem.c
+++ b/src/vlib/linux/physmem.c
@@ -179,7 +179,7 @@ unix_physmem_region_alloc (vlib_main_t * vm, char *name, u32 size,
   pr->log2_page_size = alloc.log2_page_size;
   pr->n_pages = alloc.n_pages;
   pr->size = (u64) pr->n_pages << (u64) pr->log2_page_size;
-  pr->page_mask = (1 << pr->log2_page_size) - 1;
+  pr->page_mask = (1ull << pr->log2_page_size) - 1;
   pr->numa_node = numa_node;
   pr->name = format (0, "%s%c", name, 0);
 
diff --git a/src/vlib/linux/vfio.c b/src/vlib/linux/vfio.c
index 02262719e82..ffc990a61d2 100644
--- a/src/vlib/linux/vfio.c
+++ b/src/vlib/linux/vfio.c
@@ -52,8 +52,8 @@ vfio_map_regions (vlib_main_t * vm, int fd)
       vec_foreach_index (i, pr->page_table)
         {
 	  int rv;
-	  dm.vaddr = pointer_to_uword (pr->mem) + (i << pr->log2_page_size);
-	  dm.size = 1 << pr->log2_page_size;
+	  dm.vaddr = pointer_to_uword (pr->mem) + ((u64)i << pr->log2_page_size);
+	  dm.size = 1ull << pr->log2_page_size;
 	  dm.iova = dm.vaddr;
 	  vlib_log_debug (lvm->log_default, "map DMA va:0x%lx iova:%lx "
 			  "size:0x%lx", dm.vaddr, dm.iova, dm.size);
diff --git a/src/vppinfra/linux/mem.c b/src/vppinfra/linux/mem.c
index 2d968fae0ac..227e55b6d56 100644
--- a/src/vppinfra/linux/mem.c
+++ b/src/vppinfra/linux/mem.c
@@ -73,7 +73,8 @@ clib_mem_vm_randomize_va (uword * requested_va, u32 log2_page_size)
   else
     bit_mask = 0;
 
-  *requested_va += (clib_cpu_time_now () & bit_mask) * (1 << log2_page_size);
+  *requested_va +=
+    (clib_cpu_time_now () & bit_mask) * (1ull << log2_page_size);
 }
 
 clib_error_t *
@@ -257,7 +258,7 @@ clib_mem_vm_ext_free (clib_mem_vm_alloc_t * a)
 {
   if (a != 0)
     {
-      clib_mem_vm_free (a->addr, 1 << a->log2_page_size);
+      clib_mem_vm_free (a->addr, 1ull << a->log2_page_size);
       if (a->fd != -1)
 	close (a->fd);
     }