treewide: Use array_size() in vzalloc()

The vzalloc() function has no 2-factor argument form, so multiplication
factors need to be wrapped in array_size(). This patch replaces cases of:

        vzalloc(a * b)

with:
        vzalloc(array_size(a, b))

as well as handling cases of:

        vzalloc(a * b * c)

with:

        vzalloc(array3_size(a, b, c))

This does, however, attempt to ignore constant size factors like:

        vzalloc(4 * 1024)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  vzalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  vzalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  vzalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
  vzalloc(
-	sizeof(TYPE) * (COUNT_ID)
+	array_size(COUNT_ID, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * COUNT_ID
+	array_size(COUNT_ID, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * (COUNT_CONST)
+	array_size(COUNT_CONST, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * COUNT_CONST
+	array_size(COUNT_CONST, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(THING) * (COUNT_ID)
+	array_size(COUNT_ID, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * COUNT_ID
+	array_size(COUNT_ID, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * (COUNT_CONST)
+	array_size(COUNT_CONST, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * COUNT_CONST
+	array_size(COUNT_CONST, sizeof(THING))
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

  vzalloc(
-	SIZE * COUNT
+	array_size(COUNT, SIZE)
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  vzalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  vzalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  vzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  vzalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  vzalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  vzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  vzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  vzalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  vzalloc(C1 * C2 * C3, ...)
|
  vzalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants.
@@
expression E1, E2;
constant C1, C2;
@@

(
  vzalloc(C1 * C2, ...)
|
  vzalloc(
-	E1 * E2
+	array_size(E1, E2)
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>

50 files changed, 126 insertions, 92 deletions

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index da51293e7c03..7436b2d27fa3 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -898,7 +898,7 @@ static bool zram_meta_alloc(struct zram *zram, u64 disksize)
 	size_t num_pages;
 
 	num_pages = disksize >> PAGE_SHIFT;
-	zram->table = vzalloc(num_pages * sizeof(*zram->table));
+	zram->table = vzalloc(array_size(num_pages, sizeof(*zram->table)));
 	if (!zram->table)
 		return false;
 
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 293167c6e254..fd6eec8085b4 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -321,7 +321,8 @@ static int __init raw_init(void)
 		max_raw_minors = MAX_RAW_MINORS;
 	}
 
-	raw_devices = vzalloc(sizeof(struct raw_device_data) * max_raw_minors);
+	raw_devices = vzalloc(array_size(max_raw_minors,
+					 sizeof(struct raw_device_data)));
 	if (!raw_devices) {
 		printk(KERN_ERR "Not enough memory for raw device structures\n");
 		ret = -ENOMEM;
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 08960a55eb27..b6575408f279 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2339,7 +2339,7 @@ hwp_cpu_matched:
 
 	pr_info("Intel P-state driver initializing\n");
 
-	all_cpu_data = vzalloc(sizeof(void *) * num_possible_cpus());
+	all_cpu_data = vzalloc(array_size(sizeof(void *), num_possible_cpus()));
 	if (!all_cpu_data)
 		return -ENOMEM;
 
diff --git a/drivers/dma/mic_x100_dma.c b/drivers/dma/mic_x100_dma.c
index 94d7bd7d2880..68dd79783b54 100644
--- a/drivers/dma/mic_x100_dma.c
+++ b/drivers/dma/mic_x100_dma.c
@@ -385,7 +385,8 @@ static int mic_dma_alloc_desc_ring(struct mic_dma_chan *ch)
 	if (dma_mapping_error(dev, ch->desc_ring_micpa))
 		goto map_error;
 
-	ch->tx_array = vzalloc(MIC_DMA_DESC_RX_SIZE * sizeof(*ch->tx_array));
+	ch->tx_array = vzalloc(array_size(MIC_DMA_DESC_RX_SIZE,
+					  sizeof(*ch->tx_array)));
 	if (!ch->tx_array)
 		goto tx_error;
 	return 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
index 17d6b9fb6d77..dd11b7313ca0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
@@ -369,7 +369,8 @@ int amdgpu_gart_init(struct amdgpu_device *adev)
 
 #ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
 	/* Allocate pages table */
-	adev->gart.pages = vzalloc(sizeof(void *) * adev->gart.num_cpu_pages);
+	adev->gart.pages = vzalloc(array_size(sizeof(void *),
+					      adev->gart.num_cpu_pages));
 	if (adev->gart.pages == NULL)
 		return -ENOMEM;
 #endif
diff --git a/drivers/gpu/drm/drm_hashtab.c b/drivers/gpu/drm/drm_hashtab.c
index dae18e58e79b..c92b00d42ece 100644
--- a/drivers/gpu/drm/drm_hashtab.c
+++ b/drivers/gpu/drm/drm_hashtab.c
@@ -47,7 +47,7 @@ int drm_ht_create(struct drm_open_hash *ht, unsigned int order)
 	if (size <= PAGE_SIZE / sizeof(*ht->table))
 		ht->table = kcalloc(size, sizeof(*ht->table), GFP_KERNEL);
 	else
-		ht->table = vzalloc(size*sizeof(*ht->table));
+		ht->table = vzalloc(array_size(size, sizeof(*ht->table)));
 	if (!ht->table) {
 		DRM_ERROR("Out of memory for hash table\n");
 		return -ENOMEM;
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 78e55aafc8bc..23296547da95 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -1585,8 +1585,9 @@ static struct intel_vgpu_mm *intel_vgpu_create_ggtt_mm(struct intel_vgpu *vgpu)
 	mm->type = INTEL_GVT_MM_GGTT;
 
 	nr_entries = gvt_ggtt_gm_sz(vgpu->gvt) >> I915_GTT_PAGE_SHIFT;
-	mm->ggtt_mm.virtual_ggtt = vzalloc(nr_entries *
-					vgpu->gvt->device_info.gtt_entry_size);
+	mm->ggtt_mm.virtual_ggtt =
+		vzalloc(array_size(nr_entries,
+				   vgpu->gvt->device_info.gtt_entry_size));
 	if (!mm->ggtt_mm.virtual_ggtt) {
 		vgpu_free_mm(mm);
 		return ERR_PTR(-ENOMEM);
diff --git a/drivers/gpu/drm/i915/gvt/mmio.c b/drivers/gpu/drm/i915/gvt/mmio.c
index e4960aff68bd..b31eb36fc102 100644
--- a/drivers/gpu/drm/i915/gvt/mmio.c
+++ b/drivers/gpu/drm/i915/gvt/mmio.c
@@ -267,7 +267,7 @@ int intel_vgpu_init_mmio(struct intel_vgpu *vgpu)
 {
 	const struct intel_gvt_device_info *info = &vgpu->gvt->device_info;
 
-	vgpu->mmio.vreg = vzalloc(info->mmio_size * 2);
+	vgpu->mmio.vreg = vzalloc(array_size(info->mmio_size, 2));
 	if (!vgpu->mmio.vreg)
 		return -ENOMEM;
 
diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
index 66149eaba78c..1cef155cc933 100644
--- a/drivers/gpu/drm/radeon/radeon_gart.c
+++ b/drivers/gpu/drm/radeon/radeon_gart.c
@@ -347,7 +347,8 @@ int radeon_gart_init(struct radeon_device *rdev)
 	DRM_INFO("GART: num cpu pages %u, num gpu pages %u\n",
 		 rdev->gart.num_cpu_pages, rdev->gart.num_gpu_pages);
 	/* Allocate pages table */
-	rdev->gart.pages = vzalloc(sizeof(void *) * rdev->gart.num_cpu_pages);
+	rdev->gart.pages = vzalloc(array_size(sizeof(void *),
+				   rdev->gart.num_cpu_pages));
 	if (rdev->gart.pages == NULL) {
 		radeon_gart_fini(rdev);
 		return -ENOMEM;
diff --git a/drivers/gpu/drm/selftests/test-drm_mm.c b/drivers/gpu/drm/selftests/test-drm_mm.c
index 7027a6739845..933af1c25387 100644
--- a/drivers/gpu/drm/selftests/test-drm_mm.c
+++ b/drivers/gpu/drm/selftests/test-drm_mm.c
@@ -389,7 +389,7 @@ static int __igt_reserve(unsigned int count, u64 size)
 	if (!order)
 		goto err;
 
-	nodes = vzalloc(sizeof(*nodes) * count);
+	nodes = vzalloc(array_size(count, sizeof(*nodes)));
 	if (!nodes)
 		goto err_order;
 
@@ -889,7 +889,7 @@ static int __igt_insert_range(unsigned int count, u64 size, u64 start, u64 end)
 	 */
 
 	ret = -ENOMEM;
-	nodes = vzalloc(count * sizeof(*nodes));
+	nodes = vzalloc(array_size(count, sizeof(*nodes)));
 	if (!nodes)
 		goto err;
 
@@ -1046,7 +1046,7 @@ static int igt_align(void *ignored)
 	 * meets our requirements.
 	 */
 
-	nodes = vzalloc(max_count * sizeof(*nodes));
+	nodes = vzalloc(array_size(max_count, sizeof(*nodes)));
 	if (!nodes)
 		goto err;
 
@@ -1416,7 +1416,7 @@ static int igt_evict(void *ignored)
 	 */
 
 	ret = -ENOMEM;
-	nodes = vzalloc(size * sizeof(*nodes));
+	nodes = vzalloc(array_size(size, sizeof(*nodes)));
 	if (!nodes)
 		goto err;
 
@@ -1526,7 +1526,7 @@ static int igt_evict_range(void *ignored)
 	 */
 
 	ret = -ENOMEM;
-	nodes = vzalloc(size * sizeof(*nodes));
+	nodes = vzalloc(array_size(size, sizeof(*nodes)));
 	if (!nodes)
 		goto err;
 
@@ -1627,7 +1627,7 @@ static int igt_topdown(void *ignored)
 	 */
 
 	ret = -ENOMEM;
-	nodes = vzalloc(count * sizeof(*nodes));
+	nodes = vzalloc(array_size(count, sizeof(*nodes)));
 	if (!nodes)
 		goto err;
 
@@ -1741,7 +1741,7 @@ static int igt_bottomup(void *ignored)
 	 */
 
 	ret = -ENOMEM;
-	nodes = vzalloc(count * sizeof(*nodes));
+	nodes = vzalloc(array_size(count, sizeof(*nodes)));
 	if (!nodes)
 		goto err;
 
@@ -2098,7 +2098,7 @@ static int igt_color_evict(void *ignored)
 	 */
 
 	ret = -ENOMEM;
-	nodes = vzalloc(total_size * sizeof(*nodes));
+	nodes = vzalloc(array_size(total_size, sizeof(*nodes)));
 	if (!nodes)
 		goto err;
 
@@ -2199,7 +2199,7 @@ static int igt_color_evict_range(void *ignored)
 	 */
 
 	ret = -ENOMEM;
-	nodes = vzalloc(total_size * sizeof(*nodes));
+	nodes = vzalloc(array_size(total_size, sizeof(*nodes)));
 	if (!nodes)
 		goto err;
 
diff --git a/drivers/gpu/drm/via/via_dmablit.c b/drivers/gpu/drm/via/via_dmablit.c
index d6e84a589ef1..345bda4494e1 100644
--- a/drivers/gpu/drm/via/via_dmablit.c
+++ b/drivers/gpu/drm/via/via_dmablit.c
@@ -235,7 +235,7 @@ via_lock_all_dma_pages(drm_via_sg_info_t *vsg,  drm_via_dmablit_t *xfer)
 	vsg->num_pages = VIA_PFN(xfer->mem_addr + (xfer->num_lines * xfer->mem_stride - 1)) -
 		first_pfn + 1;
 
-	vsg->pages = vzalloc(sizeof(struct page *) * vsg->num_pages);
+	vsg->pages = vzalloc(array_size(sizeof(struct page *), vsg->num_pages));
 	if (NULL == vsg->pages)
 		return -ENOMEM;
 	ret = get_user_pages_fast((unsigned long)xfer->mem_addr,
diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c
index 2aadf5813a40..182436b92ba9 100644
--- a/drivers/infiniband/core/umem_odp.c
+++ b/drivers/infiniband/core/umem_odp.c
@@ -285,13 +285,15 @@ struct ib_umem *ib_alloc_odp_umem(struct ib_ucontext *context,
 	mutex_init(&odp_data->umem_mutex);
 	init_completion(&odp_data->notifier_completion);
 
-	odp_data->page_list = vzalloc(pages * sizeof(*odp_data->page_list));
+	odp_data->page_list =
+		vzalloc(array_size(pages, sizeof(*odp_data->page_list)));
 	if (!odp_data->page_list) {
 		ret = -ENOMEM;
 		goto out_odp_data;
 	}
 
-	odp_data->dma_list = vzalloc(pages * sizeof(*odp_data->dma_list));
+	odp_data->dma_list =
+		vzalloc(array_size(pages, sizeof(*odp_data->dma_list)));
 	if (!odp_data->dma_list) {
 		ret = -ENOMEM;
 		goto out_page_list;
@@ -371,15 +373,17 @@ int ib_umem_odp_get(struct ib_ucontext *context, struct ib_umem *umem,
 	init_completion(&umem->odp_data->notifier_completion);
 
 	if (ib_umem_num_pages(umem)) {
-		umem->odp_data->page_list = vzalloc(ib_umem_num_pages(umem) *
-					    sizeof(*umem->odp_data->page_list));
+		umem->odp_data->page_list =
+			vzalloc(array_size(sizeof(*umem->odp_data->page_list),
+					   ib_umem_num_pages(umem)));
 		if (!umem->odp_data->page_list) {
 			ret_val = -ENOMEM;
 			goto out_odp_data;
 		}
 
-		umem->odp_data->dma_list = vzalloc(ib_umem_num_pages(umem) *
-					  sizeof(*umem->odp_data->dma_list));
+		umem->odp_data->dma_list =
+			vzalloc(array_size(sizeof(*umem->odp_data->dma_list),
+					   ib_umem_num_pages(umem)));
 		if (!umem->odp_data->dma_list) {
 			ret_val = -ENOMEM;
 			goto out_page_list;
diff --git a/drivers/infiniband/hw/hns/hns_roce_mr.c b/drivers/infiniband/hw/hns/hns_roce_mr.c
index d1fe0e7957e3..eb26a5f6fc58 100644
--- a/drivers/infiniband/hw/hns/hns_roce_mr.c
+++ b/drivers/infiniband/hw/hns/hns_roce_mr.c
@@ -144,7 +144,7 @@ static int hns_roce_buddy_init(struct hns_roce_buddy *buddy, int max_order)
 		buddy->bits[i] = kcalloc(s, sizeof(long), GFP_KERNEL |
 					 __GFP_NOWARN);
 		if (!buddy->bits[i]) {
-			buddy->bits[i] = vzalloc(s * sizeof(long));
+			buddy->bits[i] = vzalloc(array_size(s, sizeof(long)));
 			if (!buddy->bits[i])
 				goto err_out_free;
 		}
diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c
index 704505618909..d7cdc77d6306 100644
--- a/drivers/infiniband/hw/qib/qib_init.c
+++ b/drivers/infiniband/hw/qib/qib_init.c
@@ -369,11 +369,13 @@ static void init_shadow_tids(struct qib_devdata *dd)
 	struct page **pages;
 	dma_addr_t *addrs;
 
-	pages = vzalloc(dd->cfgctxts * dd->rcvtidcnt * sizeof(struct page *));
+	pages = vzalloc(array_size(sizeof(struct page *),
+				   dd->cfgctxts * dd->rcvtidcnt));
 	if (!pages)
 		goto bail;
 
-	addrs = vzalloc(dd->cfgctxts * dd->rcvtidcnt * sizeof(dma_addr_t));
+	addrs = vzalloc(array_size(sizeof(dma_addr_t),
+				   dd->cfgctxts * dd->rcvtidcnt));
 	if (!addrs)
 		goto bail_free;
 
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index 962fbcb57dc7..6535d9beb24d 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -358,7 +358,8 @@ static int ipoib_cm_nonsrq_init_rx(struct net_device *dev, struct ib_cm_id *cm_i
 	int ret;
 	int i;
 
-	rx->rx_ring = vzalloc(ipoib_recvq_size * sizeof *rx->rx_ring);
+	rx->rx_ring = vzalloc(array_size(ipoib_recvq_size,
+					 sizeof(*rx->rx_ring)));
 	if (!rx->rx_ring)
 		return -ENOMEM;
 
@@ -1145,7 +1146,7 @@ static int ipoib_cm_tx_init(struct ipoib_cm_tx *p, u32 qpn,
 	int ret;
 
 	noio_flag = memalloc_noio_save();
-	p->tx_ring = vzalloc(ipoib_sendq_size * sizeof(*p->tx_ring));
+	p->tx_ring = vzalloc(array_size(ipoib_sendq_size, sizeof(*p->tx_ring)));
 	if (!p->tx_ring) {
 		memalloc_noio_restore(noio_flag);
 		ret = -ENOMEM;
@@ -1570,7 +1571,8 @@ static void ipoib_cm_create_srq(struct net_device *dev, int max_sge)
 		return;
 	}
 
-	priv->cm.srq_ring = vzalloc(ipoib_recvq_size * sizeof *priv->cm.srq_ring);
+	priv->cm.srq_ring = vzalloc(array_size(ipoib_recvq_size,
+					       sizeof(*priv->cm.srq_ring)));
 	if (!priv->cm.srq_ring) {
 		ib_destroy_srq(priv->cm.srq);
 		priv->cm.srq = NULL;
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 0d74c807110e..26cde95bc0f3 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1710,7 +1710,8 @@ static int ipoib_dev_init_default(struct net_device *dev)
 	if (!priv->rx_ring)
 		goto out;
 
-	priv->tx_ring = vzalloc(ipoib_sendq_size * sizeof *priv->tx_ring);
+	priv->tx_ring = vzalloc(array_size(ipoib_sendq_size,
+					   sizeof(*priv->tx_ring)));
 	if (!priv->tx_ring) {
 		pr_warn("%s: failed to allocate TX ring (%d entries)\n",
 			priv->ca->name, ipoib_sendq_size);
diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index c7a7c2de0672..b57f764d6a16 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -187,7 +187,7 @@ static int pblk_rwb_init(struct pblk *pblk)
 
 	nr_entries = pblk_rb_calculate_size(buffer_size);
 
-	entries = vzalloc(nr_entries * sizeof(struct pblk_rb_entry));
+	entries = vzalloc(array_size(nr_entries, sizeof(struct pblk_rb_entry)));
 	if (!entries)
 		return -ENOMEM;
 
diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
index 598342833d0d..3a5069183859 100644
--- a/drivers/lightnvm/pblk-recovery.c
+++ b/drivers/lightnvm/pblk-recovery.c
@@ -260,7 +260,7 @@ static int pblk_recov_pad_oob(struct pblk *pblk, struct pblk_line *line,
 	if (!pad_rq)
 		return -ENOMEM;
 
-	data = vzalloc(pblk->max_write_pgs * geo->csecs);
+	data = vzalloc(array_size(pblk->max_write_pgs, geo->csecs));
 	if (!data) {
 		ret = -ENOMEM;
 		goto free_rq;
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index ec5f70d021de..fa4058e43202 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -2041,8 +2041,8 @@ static int cache_alloc(struct cache *ca)
 	    !init_fifo(&ca->free[RESERVE_NONE], free, GFP_KERNEL) ||
 	    !init_fifo(&ca->free_inc,	free << 2, GFP_KERNEL) ||
 	    !init_heap(&ca->heap,	free << 3, GFP_KERNEL) ||
-	    !(ca->buckets	= vzalloc(sizeof(struct bucket) *
-					  ca->sb.nbuckets)) ||
+	    !(ca->buckets	= vzalloc(array_size(sizeof(struct bucket),
+						     ca->sb.nbuckets))) ||
 	    !(ca->prio_buckets	= kzalloc(array3_size(sizeof(uint64_t),
 						      prio_buckets(ca), 2),
 					  GFP_KERNEL)) ||
diff --git a/drivers/md/dm-cache-policy-smq.c b/drivers/md/dm-cache-policy-smq.c
index 4d69b6f4129e..1b5b9ad9e492 100644
--- a/drivers/md/dm-cache-policy-smq.c
+++ b/drivers/md/dm-cache-policy-smq.c
@@ -69,7 +69,7 @@ static int space_init(struct entry_space *es, unsigned nr_entries)
 		return 0;
 	}
 
-	es->begin = vzalloc(sizeof(struct entry) * nr_entries);
+	es->begin = vzalloc(array_size(nr_entries, sizeof(struct entry)));
 	if (!es->begin)
 		return -ENOMEM;
 
diff --git a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
index 9b64f4f354bf..abd4c788dffd 100644
--- a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
+++ b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
@@ -119,12 +119,14 @@ int tpg_alloc(struct tpg_data *tpg, unsigned max_w)
 		for (plane = 0; plane < TPG_MAX_PLANES; plane++) {
 			unsigned pixelsz = plane ? 2 : 4;
 
-			tpg->lines[pat][plane] = vzalloc(max_w * 2 * pixelsz);
+			tpg->lines[pat][plane] =
+				vzalloc(array3_size(max_w, 2, pixelsz));
 			if (!tpg->lines[pat][plane])
 				return -ENOMEM;
 			if (plane == 0)
 				continue;
-			tpg->downsampled_lines[pat][plane] = vzalloc(max_w * 2 * pixelsz);
+			tpg->downsampled_lines[pat][plane] =
+				vzalloc(array3_size(max_w, 2, pixelsz));
 			if (!tpg->downsampled_lines[pat][plane])
 				return -ENOMEM;
 		}
@@ -132,13 +134,16 @@ int tpg_alloc(struct tpg_data *tpg, unsigned max_w)
 	for (plane = 0; plane < TPG_MAX_PLANES; plane++) {
 		unsigned pixelsz = plane ? 2 : 4;
 
-		tpg->contrast_line[plane] = vzalloc(max_w * pixelsz);
+		tpg->contrast_line[plane] =
+			vzalloc(array_size(pixelsz, max_w));
 		if (!tpg->contrast_line[plane])
 			return -ENOMEM;
-		tpg->black_line[plane] = vzalloc(max_w * pixelsz);
+		tpg->black_line[plane] =
+			vzalloc(array_size(pixelsz, max_w));
 		if (!tpg->black_line[plane])
 			return -ENOMEM;
-		tpg->random_line[plane] = vzalloc(max_w * 2 * pixelsz);
+		tpg->random_line[plane] =
+			vzalloc(array3_size(max_w, 2, pixelsz));
 		if (!tpg->random_line[plane])
 			return -ENOMEM;
 	}
diff --git a/drivers/media/pci/cx23885/cx23885-alsa.c b/drivers/media/pci/cx23885/cx23885-alsa.c
index 20b3cb17f97f..db1e8ff35474 100644
--- a/drivers/media/pci/cx23885/cx23885-alsa.c
+++ b/drivers/media/pci/cx23885/cx23885-alsa.c
@@ -95,7 +95,7 @@ static int cx23885_alsa_dma_init(struct cx23885_audio_dev *chip, int nr_pages)
 	memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT);
 	buf->nr_pages = nr_pages;
 
-	buf->sglist = vzalloc(buf->nr_pages * sizeof(*buf->sglist));
+	buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages));
 	if (NULL == buf->sglist)
 		goto vzalloc_err;
 
diff --git a/drivers/media/pci/cx25821/cx25821-alsa.c b/drivers/media/pci/cx25821/cx25821-alsa.c
index a45bf0331eeb..ef6380651c10 100644
--- a/drivers/media/pci/cx25821/cx25821-alsa.c
+++ b/drivers/media/pci/cx25821/cx25821-alsa.c
@@ -159,7 +159,7 @@ static int cx25821_alsa_dma_init(struct cx25821_audio_dev *chip, int nr_pages)
 	memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT);
 	buf->nr_pages = nr_pages;
 
-	buf->sglist = vzalloc(buf->nr_pages * sizeof(*buf->sglist));
+	buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages));
 	if (NULL == buf->sglist)
 		goto vzalloc_err;
 
diff --git a/drivers/media/pci/cx88/cx88-alsa.c b/drivers/media/pci/cx88/cx88-alsa.c
index 8a28fda703a2..e5c3387cd1e8 100644
--- a/drivers/media/pci/cx88/cx88-alsa.c
+++ b/drivers/media/pci/cx88/cx88-alsa.c
@@ -298,7 +298,7 @@ static int cx88_alsa_dma_init(struct cx88_audio_dev *chip, int nr_pages)
 	memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT);
 	buf->nr_pages = nr_pages;
 
-	buf->sglist = vzalloc(buf->nr_pages * sizeof(*buf->sglist));
+	buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages));
 	if (!buf->sglist)
 		goto vzalloc_err;
 
diff --git a/drivers/media/pci/saa7134/saa7134-alsa.c b/drivers/media/pci/saa7134/saa7134-alsa.c
index 72311445d13d..b90cfde6e301 100644
--- a/drivers/media/pci/saa7134/saa7134-alsa.c
+++ b/drivers/media/pci/saa7134/saa7134-alsa.c
@@ -279,7 +279,7 @@ static int saa7134_alsa_dma_init(struct saa7134_dev *dev, int nr_pages)
 	memset(dma->vaddr, 0, nr_pages << PAGE_SHIFT);
 	dma->nr_pages = nr_pages;
 
-	dma->sglist = vzalloc(dma->nr_pages * sizeof(*dma->sglist));
+	dma->sglist = vzalloc(array_size(sizeof(*dma->sglist), dma->nr_pages));
 	if (NULL == dma->sglist)
 		goto vzalloc_err;
 
diff --git a/drivers/media/platform/vivid/vivid-core.c b/drivers/media/platform/vivid/vivid-core.c
index 59031018985e..31db363602e5 100644
--- a/drivers/media/platform/vivid/vivid-core.c
+++ b/drivers/media/platform/vivid/vivid-core.c
@@ -844,10 +844,10 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
 	tpg_init(&dev->tpg, 640, 360);
 	if (tpg_alloc(&dev->tpg, MAX_ZOOM * MAX_WIDTH))
 		goto free_dev;
-	dev->scaled_line = vzalloc(MAX_ZOOM * MAX_WIDTH);
+	dev->scaled_line = vzalloc(array_size(MAX_WIDTH, MAX_ZOOM));
 	if (!dev->scaled_line)
 		goto free_dev;
-	dev->blended_line = vzalloc(MAX_ZOOM * MAX_WIDTH);
+	dev->blended_line = vzalloc(array_size(MAX_WIDTH, MAX_ZOOM));
 	if (!dev->blended_line)
 		goto free_dev;
 
diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c
index 314abde9a922..08929c087e27 100644
--- a/drivers/media/v4l2-core/videobuf-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf-dma-sg.c
@@ -69,7 +69,7 @@ static struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt,
 	struct page *pg;
 	int i;
 
-	sglist = vzalloc(nr_pages * sizeof(*sglist));
+	sglist = vzalloc(array_size(nr_pages, sizeof(*sglist)));
 	if (NULL == sglist)
 		return NULL;
 	sg_init_table(sglist, nr_pages);
diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c
index 9dc29d4389f7..f8edacde49ab 100644
--- a/drivers/mtd/nand/raw/nandsim.c
+++ b/drivers/mtd/nand/raw/nandsim.c
@@ -565,8 +565,9 @@ static int __init alloc_device(struct nandsim *ns)
 			err = -EINVAL;
 			goto err_close;
 		}
-		ns->pages_written = vzalloc(BITS_TO_LONGS(ns->geom.pgnum) *
-					    sizeof(unsigned long));
+		ns->pages_written =
+			vzalloc(array_size(sizeof(unsigned long),
+					   BITS_TO_LONGS(ns->geom.pgnum)));
 		if (!ns->pages_written) {
 			NS_ERR("alloc_device: unable to allocate pages written array\n");
 			err = -ENOMEM;
diff --git a/drivers/net/ethernet/broadcom/bnx2.c b/drivers/net/ethernet/broadcom/bnx2.c
index e13bf3b4636d..122fdb80a789 100644
--- a/drivers/net/ethernet/broadcom/bnx2.c
+++ b/drivers/net/ethernet/broadcom/bnx2.c
@@ -778,7 +778,7 @@ bnx2_alloc_rx_mem(struct bnx2 *bp)
 		int j;
 
 		rxr->rx_buf_ring =
-			vzalloc(SW_RXBD_RING_SIZE * bp->rx_max_ring);
+			vzalloc(array_size(SW_RXBD_RING_SIZE, bp->rx_max_ring));
 		if (!rxr->rx_buf_ring)
 			return -ENOMEM;
 
@@ -794,8 +794,9 @@ bnx2_alloc_rx_mem(struct bnx2 *bp)
 		}
 
 		if (bp->rx_pg_ring_size) {
-			rxr->rx_pg_ring = vzalloc(SW_RXPG_RING_SIZE *
-						  bp->rx_max_pg_ring);
+			rxr->rx_pg_ring =
+				vzalloc(array_size(SW_RXPG_RING_SIZE,
+						   bp->rx_max_pg_ring));
 			if (!rxr->rx_pg_ring)
 				return -ENOMEM;
 
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c
index f044718cea52..5b5b6228d495 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c
@@ -286,8 +286,8 @@ int octeon_init_droq(struct octeon_device *oct,
 						numa_node);
 	if (!droq->recv_buf_list)
 		droq->recv_buf_list = (struct octeon_recv_buffer *)
-				      vzalloc(droq->max_count *
-						OCT_DROQ_RECVBUF_SIZE);
+		      vzalloc(array_size(droq->max_count,
+					 OCT_DROQ_RECVBUF_SIZE));
 	if (!droq->recv_buf_list) {
 		dev_err(&oct->pci_dev->dev, "Output queue recv buf list alloc failed\n");
 		goto init_droq_fail;
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
index 85e1d14514fc..0ce07f6eb1e6 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
@@ -1406,8 +1406,8 @@ static int hns_dsaf_init(struct dsaf_device *dsaf_dev)
 		return ret;
 
 	/* malloc mem for tcam mac key(vlan+mac) */
-	priv->soft_mac_tbl = vzalloc(sizeof(*priv->soft_mac_tbl)
-		  * DSAF_TCAM_SUM);
+	priv->soft_mac_tbl = vzalloc(array_size(DSAF_TCAM_SUM,
+						sizeof(*priv->soft_mac_tbl)));
 	if (!priv->soft_mac_tbl) {
 		ret = -ENOMEM;
 		goto remove_hw;
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_cmdq.c b/drivers/net/ethernet/huawei/hinic/hinic_hw_cmdq.c
index 28a81ac97af5..4d09ea786b35 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_cmdq.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_cmdq.c
@@ -753,11 +753,12 @@ static int init_cmdq(struct hinic_cmdq *cmdq, struct hinic_wq *wq,
 
 	spin_lock_init(&cmdq->cmdq_lock);
 
-	cmdq->done = vzalloc(wq->q_depth * sizeof(*cmdq->done));
+	cmdq->done = vzalloc(array_size(sizeof(*cmdq->done), wq->q_depth));
 	if (!cmdq->done)
 		return -ENOMEM;
 
-	cmdq->errcode = vzalloc(wq->q_depth * sizeof(*cmdq->errcode));
+	cmdq->errcode = vzalloc(array_size(sizeof(*cmdq->errcode),
+					   wq->q_depth));
 	if (!cmdq->errcode) {
 		err = -ENOMEM;
 		goto err_errcode;
diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.c b/drivers/net/ethernet/neterion/vxge/vxge-config.c
index 8d0295655933..358ed6118881 100644
--- a/drivers/net/ethernet/neterion/vxge/vxge-config.c
+++ b/drivers/net/ethernet/neterion/vxge/vxge-config.c
@@ -2565,7 +2565,7 @@ __vxge_hw_mempool_grow(struct vxge_hw_mempool *mempool, u32 num_allocate,
 		 * allocate new memblock and its private part at once.
 		 * This helps to minimize memory usage a lot. */
 		mempool->memblocks_priv_arr[i] =
-				vzalloc(mempool->items_priv_size * n_items);
+			vzalloc(array_size(mempool->items_priv_size, n_items));
 		if (mempool->memblocks_priv_arr[i] == NULL) {
 			status = VXGE_HW_ERR_OUT_OF_MEMORY;
 			goto exit;
@@ -2665,7 +2665,7 @@ __vxge_hw_mempool_create(struct __vxge_hw_device *devh,
 
 	/* allocate array of memblocks */
 	mempool->memblocks_arr =
-		vzalloc(sizeof(void *) * mempool->memblocks_max);
+		vzalloc(array_size(sizeof(void *), mempool->memblocks_max));
 	if (mempool->memblocks_arr == NULL) {
 		__vxge_hw_mempool_destroy(mempool);
 		status = VXGE_HW_ERR_OUT_OF_MEMORY;
@@ -2675,7 +2675,7 @@ __vxge_hw_mempool_create(struct __vxge_hw_device *devh,
 
 	/* allocate array of private parts of items per memblocks */
 	mempool->memblocks_priv_arr =
-		vzalloc(sizeof(void *) * mempool->memblocks_max);
+		vzalloc(array_size(sizeof(void *), mempool->memblocks_max));
 	if (mempool->memblocks_priv_arr == NULL) {
 		__vxge_hw_mempool_destroy(mempool);
 		status = VXGE_HW_ERR_OUT_OF_MEMORY;
@@ -2685,8 +2685,8 @@ __vxge_hw_mempool_create(struct __vxge_hw_device *devh,
 
 	/* allocate array of memblocks DMA objects */
 	mempool->memblocks_dma_arr =
-		vzalloc(sizeof(struct vxge_hw_mempool_dma) *
-			mempool->memblocks_max);
+		vzalloc(array_size(sizeof(struct vxge_hw_mempool_dma),
+				   mempool->memblocks_max));
 	if (mempool->memblocks_dma_arr == NULL) {
 		__vxge_hw_mempool_destroy(mempool);
 		status = VXGE_HW_ERR_OUT_OF_MEMORY;
@@ -2695,7 +2695,8 @@ __vxge_hw_mempool_create(struct __vxge_hw_device *devh,
 	}
 
 	/* allocate hash array of items */
-	mempool->items_arr = vzalloc(sizeof(void *) * mempool->items_max);
+	mempool->items_arr = vzalloc(array_size(sizeof(void *),
+						mempool->items_max));
 	if (mempool->items_arr == NULL) {
 		__vxge_hw_mempool_destroy(mempool);
 		status = VXGE_HW_ERR_OUT_OF_MEMORY;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_l2.c b/drivers/net/ethernet/qlogic/qed/qed_l2.c
index de1c70843efd..99973e10b179 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_l2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_l2.c
@@ -2435,7 +2435,7 @@ static int qed_update_vport(struct qed_dev *cdev,
 	if (!cdev)
 		return -ENODEV;
 
-	rss = vzalloc(sizeof(*rss) * cdev->num_hwfns);
+	rss = vzalloc(array_size(sizeof(*rss), cdev->num_hwfns));
 	if (!rss)
 		return -ENOMEM;
 
diff --git a/drivers/net/ethernet/qlogic/qede/qede_filter.c b/drivers/net/ethernet/qlogic/qede/qede_filter.c
index e9e088d9c815..b823bfe2ea4d 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_filter.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_filter.c
@@ -342,8 +342,9 @@ int qede_alloc_arfs(struct qede_dev *edev)
 	for (i = 0; i <= QEDE_RFS_FLW_MASK; i++)
 		INIT_HLIST_HEAD(QEDE_ARFS_BUCKET_HEAD(edev, i));
 
-	edev->arfs->arfs_fltr_bmap = vzalloc(BITS_TO_LONGS(QEDE_RFS_MAX_FLTR) *
-					     sizeof(long));
+	edev->arfs->arfs_fltr_bmap =
+		vzalloc(array_size(sizeof(long),
+				   BITS_TO_LONGS(QEDE_RFS_MAX_FLTR)));
 	if (!edev->arfs->arfs_fltr_bmap) {
 		vfree(edev->arfs);
 		edev->arfs = NULL;
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
index 97c146e7698a..569d54ededec 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
@@ -386,8 +386,9 @@ int qlcnic_83xx_setup_intr(struct qlcnic_adapter *adapter)
 	}
 
 	/* setup interrupt mapping table for fw */
-	ahw->intr_tbl = vzalloc(num_msix *
-				sizeof(struct qlcnic_intrpt_config));
+	ahw->intr_tbl =
+		vzalloc(array_size(num_msix,
+				   sizeof(struct qlcnic_intrpt_config)));
 	if (!ahw->intr_tbl)
 		return -ENOMEM;
 
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index 8c6724063231..2d38d1ac2aae 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -916,8 +916,9 @@ int qlcnic_82xx_mq_intrpt(struct qlcnic_adapter *adapter, int op_type)
 	if (qlcnic_check_multi_tx(adapter) &&
 	    !ahw->diag_test &&
 	    (adapter->flags & QLCNIC_MSIX_ENABLED)) {
-		ahw->intr_tbl = vzalloc(ahw->num_msix *
-					sizeof(struct qlcnic_intrpt_config));
+		ahw->intr_tbl =
+			vzalloc(array_size(sizeof(struct qlcnic_intrpt_config),
+					   ahw->num_msix));
 		if (!ahw->intr_tbl)
 			return -ENOMEM;
 
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index d90a7b1f4088..23f0785c0573 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -4984,7 +4984,8 @@ static int efx_ef10_filter_table_probe(struct efx_nic *efx)
 		net_dev->hw_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
 	}
 
-	table->entry = vzalloc(HUNT_FILTER_TBL_ROWS * sizeof(*table->entry));
+	table->entry = vzalloc(array_size(HUNT_FILTER_TBL_ROWS,
+					  sizeof(*table->entry)));
 	if (!table->entry) {
 		rc = -ENOMEM;
 		goto fail;
diff --git a/drivers/net/ethernet/sfc/falcon/farch.c b/drivers/net/ethernet/sfc/falcon/farch.c
index 494884f6af4a..411a2f419447 100644
--- a/drivers/net/ethernet/sfc/falcon/farch.c
+++ b/drivers/net/ethernet/sfc/falcon/farch.c
@@ -2755,7 +2755,8 @@ int ef4_farch_filter_table_probe(struct ef4_nic *efx)
 					     GFP_KERNEL);
 		if (!table->used_bitmap)
 			goto fail;
-		table->spec = vzalloc(table->size * sizeof(*table->spec));
+		table->spec = vzalloc(array_size(sizeof(*table->spec),
+						 table->size));
 		if (!table->spec)
 			goto fail;
 	}
diff --git a/drivers/net/ethernet/sfc/farch.c b/drivers/net/ethernet/sfc/farch.c
index c72adf8b52ea..8edf20967c82 100644
--- a/drivers/net/ethernet/sfc/farch.c
+++ b/drivers/net/ethernet/sfc/farch.c
@@ -2826,7 +2826,8 @@ int efx_farch_filter_table_probe(struct efx_nic *efx)
 					     GFP_KERNEL);
 		if (!table->used_bitmap)
 			goto fail;
-		table->spec = vzalloc(table->size * sizeof(*table->spec));
+		table->spec = vzalloc(array_size(sizeof(*table->spec),
+						 table->size));
 		if (!table->spec)
 			goto fail;
 	}
diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
index 157b67c1bf8e..67ffe74747a1 100644
--- a/drivers/net/ppp/pptp.c
+++ b/drivers/net/ppp/pptp.c
@@ -648,7 +648,7 @@ static int __init pptp_init_module(void)
 	int err = 0;
 	pr_info("PPTP driver version " PPTP_DRIVER_VERSION "\n");
 
-	callid_sock = vzalloc((MAX_CALLID + 1) * sizeof(void *));
+	callid_sock = vzalloc(array_size(sizeof(void *), (MAX_CALLID + 1)));
 	if (!callid_sock)
 		return -ENOMEM;
 
diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
index e1aef253601e..cd51492ae6c2 100644
--- a/drivers/net/xen-netback/xenbus.c
+++ b/drivers/net/xen-netback/xenbus.c
@@ -977,8 +977,8 @@ static void connect(struct backend_info *be)
 	}
 
 	/* Use the number of queues requested by the frontend */
-	be->vif->queues = vzalloc(requested_num_queues *
-				  sizeof(struct xenvif_queue));
+	be->vif->queues = vzalloc(array_size(requested_num_queues,
+					     sizeof(struct xenvif_queue)));
 	if (!be->vif->queues) {
 		xenbus_dev_fatal(dev, -ENOMEM,
 				 "allocating queues");
diff --git a/drivers/s390/char/sclp_sd.c b/drivers/s390/char/sclp_sd.c
index 99f41db5123b..1e244f78f192 100644
--- a/drivers/s390/char/sclp_sd.c
+++ b/drivers/s390/char/sclp_sd.c
@@ -300,7 +300,7 @@ static int sclp_sd_store_data(struct sclp_sd_data *result, u8 di)
 		goto out_result;
 
 	/* Allocate memory */
-	data = vzalloc((size_t) dsize * PAGE_SIZE);
+	data = vzalloc(array_size((size_t)dsize, PAGE_SIZE));
 	if (!data) {
 		rc = -ENOMEM;
 		goto out;
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index b965d4fe18ef..94c23ad51179 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -4829,8 +4829,9 @@ megasas_alloc_fusion_context(struct megasas_instance *instance)
 		(PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
 						fusion->log_to_span_pages);
 	if (!fusion->log_to_span) {
-		fusion->log_to_span = vzalloc(MAX_LOGICAL_DRIVES_EXT *
-					      sizeof(LD_SPAN_INFO));
+		fusion->log_to_span =
+			vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
+					   sizeof(LD_SPAN_INFO)));
 		if (!fusion->log_to_span) {
 			dev_err(&instance->pdev->dev, "Failed from %s %d\n",
 				__func__, __LINE__);
@@ -4844,8 +4845,9 @@ megasas_alloc_fusion_context(struct megasas_instance *instance)
 		(struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
 		fusion->load_balance_info_pages);
 	if (!fusion->load_balance_info) {
-		fusion->load_balance_info = vzalloc(MAX_LOGICAL_DRIVES_EXT *
-			sizeof(struct LD_LOAD_BALANCE_INFO));
+		fusion->load_balance_info =
+			vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
+					   sizeof(struct LD_LOAD_BALANCE_INFO)));
 		if (!fusion->load_balance_info)
 			dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
 				"continuing without Load Balance support\n");
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index 0c2e82af9c0a..7732e9336d43 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -1661,7 +1661,9 @@ static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
 		return rc;
 	}
 
-	lport->lport_loopid_map = vzalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
+	lport->lport_loopid_map =
+		vzalloc(array_size(65536,
+				   sizeof(struct tcm_qla2xxx_fc_loopid)));
 	if (!lport->lport_loopid_map) {
 		pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
 		    sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
diff --git a/drivers/soc/fsl/qbman/qman.c b/drivers/soc/fsl/qbman/qman.c
index a7e94a3decf2..ecb22749df0b 100644
--- a/drivers/soc/fsl/qbman/qman.c
+++ b/drivers/soc/fsl/qbman/qman.c
@@ -1021,7 +1021,8 @@ int qman_alloc_fq_table(u32 _num_fqids)
 {
 	num_fqids = _num_fqids;
 
-	fq_table = vzalloc(num_fqids * 2 * sizeof(struct qman_fq *));
+	fq_table = vzalloc(array3_size(sizeof(struct qman_fq *),
+				       num_fqids, 2));
 	if (!fq_table)
 		return -ENOMEM;
 
diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme.c b/drivers/staging/rtl8188eu/core/rtw_mlme.c
index 24e92998a30c..50e7cae32f75 100644
--- a/drivers/staging/rtl8188eu/core/rtw_mlme.c
+++ b/drivers/staging/rtl8188eu/core/rtw_mlme.c
@@ -53,7 +53,7 @@ int rtw_init_mlme_priv(struct adapter *padapter)
 
 	memset(&pmlmepriv->assoc_ssid, 0, sizeof(struct ndis_802_11_ssid));
 
-	pbuf = vzalloc(MAX_BSS_CNT * (sizeof(struct wlan_network)));
+	pbuf = vzalloc(array_size(MAX_BSS_CNT, sizeof(struct wlan_network)));
 
 	if (!pbuf) {
 		res = _FAIL;
diff --git a/drivers/staging/rtl8723bs/core/rtw_mlme.c b/drivers/staging/rtl8723bs/core/rtw_mlme.c
index cc4f115e082c..f9392b8db49b 100644
--- a/drivers/staging/rtl8723bs/core/rtw_mlme.c
+++ b/drivers/staging/rtl8723bs/core/rtw_mlme.c
@@ -37,7 +37,7 @@ sint	_rtw_init_mlme_priv(struct adapter *padapter)
 
 	memset(&pmlmepriv->assoc_ssid, 0, sizeof(struct ndis_802_11_ssid));
 
-	pbuf = vzalloc(MAX_BSS_CNT * (sizeof(struct wlan_network)));
+	pbuf = vzalloc(array_size(MAX_BSS_CNT, sizeof(struct wlan_network)));
 
 	if (pbuf == NULL) {
 		res = _FAIL;
diff --git a/drivers/staging/rts5208/rtsx_chip.c b/drivers/staging/rts5208/rtsx_chip.c
index f8f9579cc679..8a823466ca2b 100644
--- a/drivers/staging/rts5208/rtsx_chip.c
+++ b/drivers/staging/rts5208/rtsx_chip.c
@@ -1660,13 +1660,13 @@ int rtsx_write_cfg_seq(struct rtsx_chip *chip, u8 func, u16 addr, u8 *buf,
 
 	dev_dbg(rtsx_dev(chip), "dw_len = %d\n", dw_len);
 
-	data = vzalloc(dw_len * 4);
+	data = vzalloc(array_size(dw_len, 4));
 	if (!data) {
 		rtsx_trace(chip);
 		return STATUS_NOMEM;
 	}
 
-	mask = vzalloc(dw_len * 4);
+	mask = vzalloc(array_size(dw_len, 4));
 	if (!mask) {
 		vfree(data);
 		rtsx_trace(chip);
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index efe8214f2df3..ee5081ba5313 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -253,7 +253,7 @@ int transport_alloc_session_tags(struct se_session *se_sess,
 	se_sess->sess_cmd_map = kcalloc(tag_size, tag_num,
 					GFP_KERNEL | __GFP_NOWARN | __GFP_RETRY_MAYFAIL);
 	if (!se_sess->sess_cmd_map) {
-		se_sess->sess_cmd_map = vzalloc(tag_num * tag_size);
+		se_sess->sess_cmd_map = vzalloc(array_size(tag_size, tag_num));
 		if (!se_sess->sess_cmd_map) {
 			pr_err("Unable to allocate se_sess->sess_cmd_map\n");
 			return -ENOMEM;