Merge tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull more overflow updates from Kees Cook:
 "The rest of the overflow changes for v4.18-rc1.

  This includes the explicit overflow fixes from Silvio, further
  struct_size() conversions from Matthew, and a bug fix from Dan.

  But the bulk of it is the treewide conversions to use either the
  2-factor argument allocators (e.g. kmalloc(a * b, ...) into
  kmalloc_array(a, b, ...) or the array_size() macros (e.g. vmalloc(a *
  b) into vmalloc(array_size(a, b)).

  Coccinelle was fighting me on several fronts, so I've done a bunch of
  manual whitespace updates in the patches as well.

  Summary:

   - Error path bug fix for overflow tests (Dan)

   - Additional struct_size() conversions (Matthew, Kees)

   - Explicitly reported overflow fixes (Silvio, Kees)

   - Add missing kvcalloc() function (Kees)

   - Treewide conversions of allocators to use either 2-factor argument
     variant when available, or array_size() and array3_size() as needed
     (Kees)"

* tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (26 commits)
  treewide: Use array_size in f2fs_kvzalloc()
  treewide: Use array_size() in f2fs_kzalloc()
  treewide: Use array_size() in f2fs_kmalloc()
  treewide: Use array_size() in sock_kmalloc()
  treewide: Use array_size() in kvzalloc_node()
  treewide: Use array_size() in vzalloc_node()
  treewide: Use array_size() in vzalloc()
  treewide: Use array_size() in vmalloc()
  treewide: devm_kzalloc() -> devm_kcalloc()
  treewide: devm_kmalloc() -> devm_kmalloc_array()
  treewide: kvzalloc() -> kvcalloc()
  treewide: kvmalloc() -> kvmalloc_array()
  treewide: kzalloc_node() -> kcalloc_node()
  treewide: kzalloc() -> kcalloc()
  treewide: kmalloc() -> kmalloc_array()
  mm: Introduce kvcalloc()
  video: uvesafb: Fix integer overflow in allocation
  UBIFS: Fix potential integer overflow in allocation
  leds: Use struct_size() in allocation
  Convert intel uncore to struct_size
  ...

1 files changed, 8 insertions, 7 deletions

diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index fe2af6aa88fc..0b5b3abe054e 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -628,14 +628,15 @@ struct devfreq *devfreq_add_device(struct device *dev,
                 goto err_dev;
         }
 
-        devfreq->trans_table =  devm_kzalloc(&devfreq->dev,
-                                                sizeof(unsigned int) *
-                                                devfreq->profile->max_state *
-                                                devfreq->profile->max_state,
-                                                GFP_KERNEL);
-        devfreq->time_in_state = devm_kzalloc(&devfreq->dev,
-                                                sizeof(unsigned long) *
+        devfreq->trans_table =
+                devm_kzalloc(&devfreq->dev,
+                             array3_size(sizeof(unsigned int),
+                                         devfreq->profile->max_state,
+                                         devfreq->profile->max_state),
+                             GFP_KERNEL);
+        devfreq->time_in_state = devm_kcalloc(&devfreq->dev,
                                                 devfreq->profile->max_state,
+                                                sizeof(unsigned long),
                                                 GFP_KERNEL);
         devfreq->last_stat_updated = jiffies;