diff options
| -rw-r--r-- | sparse.c | 2 | ||||
| -rw-r--r-- | validation/byte-count-max.c | 28 |
2 files changed, 29 insertions, 1 deletions
@@ -165,7 +165,7 @@ static void check_byte_count(struct instruction *insn, pseudo_t count) static void check_memset(struct instruction *insn) { - check_byte_count(insn, ptr_list_nth(insn->arguments, 3)); + check_byte_count(insn, ptr_list_nth(insn->arguments, 2)); } #define check_memcpy check_memset diff --git a/validation/byte-count-max.c b/validation/byte-count-max.c new file mode 100644 index 00000000..0555a505 --- /dev/null +++ b/validation/byte-count-max.c @@ -0,0 +1,28 @@ +typedef unsigned long int size_t; +typedef unsigned long ulong; + +extern void *memset(void *s, int c, size_t n); +extern void *memcpy(void *dest, void *src, size_t n); +extern ulong copy_to_user(void *to, const void *from, ulong count); +extern ulong copy_from_user(void *to, const void *from, ulong count); + +static void func (char *s) +{ + char d[250000]; + + memset(d, 0, 250000); + memcpy(d, s, 250000); + copy_to_user(s, d, 250000); + copy_from_user(d, s, 250000); +} + +/* + * check-name: byte-count-max + * + * check-error-start +byte-count-max.c:13:15: warning: memset with byte count of 250000 +byte-count-max.c:14:15: warning: memcpy with byte count of 250000 +byte-count-max.c:15:21: warning: copy_to_user with byte count of 250000 +byte-count-max.c:16:23: warning: copy_from_user with byte count of 250000 + * check-error-end + */ |