validation/sm_user_data2.c

   1 #include "check_debug.h"
   2
   3 int copy_from_user(void *dest, void *src, int size){}
   4
   5 struct my_struct {
   6         int x, y;
   7 };
   8
   9 void *pointer;
  10 struct my_struct *dest;
  11
  12 struct my_struct *returns_copy(void)
  13 {
  14         copy_from_user(dest, pointer, sizeof(*dest));
  15         return dest;
  16 }
  17
  18 struct my_struct *a;
  19 void test(void)
  20 {
  21         a = returns_copy();
  22         __smatch_state("check_user_data", "a->x");
  23 }
  24
  25 /*
  26  * check-name: smatch user data #2
  27  * check-command: smatch -p=kernel -I.. sm_user_data2.c
  28  *
  29  * check-output-start
  30 sm_user_data2.c:22 test() 'a->x' = 'user_data'
  31  * check-output-end
  32  */