diff options
| author | Kees Cook <keescook@chromium.org> | 2024-04-29 12:43:41 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2024-04-30 10:34:30 -0700 |
| commit | 26f812ba75890c48644a31e3cfe3dd9762138968 (patch) | |
| tree | 20dc3e07c3d14725fdc4f1e1f146e6d4978c08db /include/linux/fortify-string.h | |
| parent | 091f79e8de44736a1e677701d67334bba5b749e3 (diff) | |
kunit/fortify: Add memcpy() tests
Add fortify tests for memcpy() and memmove(). This can use a similar
method to the fortify_panic() replacement, only we can do it for what
was the WARN_ONCE(), which can be redefined.
Since this is primarily testing the fortify behaviors of the memcpy()
and memmove() defenses, the tests for memcpy() and memmove() are
identical.
Link: https://lore.kernel.org/r/20240429194342.2421639-3-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'include/linux/fortify-string.h')
| -rw-r--r-- | include/linux/fortify-string.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/fortify-string.h b/include/linux/fortify-string.h index 6aeebe0a6777..a0bb13825109 100644 --- a/include/linux/fortify-string.h +++ b/include/linux/fortify-string.h @@ -15,10 +15,14 @@ #define FORTIFY_REASON(func, write) (FIELD_PREP(BIT(0), write) | \ FIELD_PREP(GENMASK(7, 1), func)) +/* Overridden by KUnit tests. */ #ifndef fortify_panic # define fortify_panic(func, write, avail, size, retfail) \ __fortify_panic(FORTIFY_REASON(func, write), avail, size) #endif +#ifndef fortify_warn_once +# define fortify_warn_once(x...) WARN_ONCE(x) +#endif #define FORTIFY_READ 0 #define FORTIFY_WRITE 1 @@ -609,7 +613,7 @@ __FORTIFY_INLINE bool fortify_memcpy_chk(__kernel_size_t size, const size_t __q_size = (q_size); \ const size_t __p_size_field = (p_size_field); \ const size_t __q_size_field = (q_size_field); \ - WARN_ONCE(fortify_memcpy_chk(__fortify_size, __p_size, \ + fortify_warn_once(fortify_memcpy_chk(__fortify_size, __p_size, \ __q_size, __p_size_field, \ __q_size_field, FORTIFY_FUNC_ ##op), \ #op ": detected field-spanning write (size %zu) of single %s (size %zu)\n", \ |