validation/sm_skb3.c

   1 #include "check_debug.h"
   2
   3 struct sk_buff {
   4         unsigned char *head, *data;
   5         unsigned short network_header;
   6 };
   7
   8 struct foo {
   9         int a, b, c;
  10 };
  11
  12 int frob(struct sk_buff *skb)
  13 {
  14         struct foo *p;
  15
  16         p = skb->data + sizeof(int) * 2;
  17         __smatch_user_rl(p->a);
  18
  19         return 0;
  20 }
  21
  22 /*
  23  * check-name: smatch: userdata from skb #3
  24  * check-command: smatch -p=kernel -I.. sm_skb3.c
  25  *
  26  * check-output-start
  27 sm_skb3.c:17 frob() user rl: 'p->a' = 's32min-s32max'
  28  * check-output-end
  29  */