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| author |   Daniel Axtens <dja@axtens.net> | 2020-12-15 20:43:47 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 22:46:16 -0800 |
| commit | d96938daae2a2ae20e5d3d38ddb85d8afdaee628 (patch) | |
| tree | f6acad466d3facc3dea1f146af9d86f19cd92f9e /drivers/misc/lkdtm/core.c | |
| parent | lib: string.h: detect intra-object overflow in fortified string functions (diff) | |
| download | wireguard-linux-d96938daae2a2ae20e5d3d38ddb85d8afdaee628.tar.xz wireguard-linux-d96938daae2a2ae20e5d3d38ddb85d8afdaee628.zip | |
lkdtm: tests for FORTIFY_SOURCE
Add code to test both:
- runtime detection of the overrun of a structure. This covers the
__builtin_object_size(x, 0) case. This test is called FORTIFY_OBJECT.
- runtime detection of the overrun of a char array within a structure.
This covers the __builtin_object_size(x, 1) case which can be used
for some string functions. This test is called FORTIFY_SUBOBJECT.
Link: https://lkml.kernel.org/r/20201122162451.27551-3-laniel_francis@privacyrequired.com
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Francis Laniel <laniel_francis@privacyrequired.com>
Suggested-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Daniel Micay <danielmicay@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc/lkdtm/core.c')
| -rw-r--r-- | drivers/misc/lkdtm/core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/misc/lkdtm/core.c b/drivers/misc/lkdtm/core.c index 97803f213d9d..b8c51a633fcc 100644 --- a/drivers/misc/lkdtm/core.c +++ b/drivers/misc/lkdtm/core.c @@ -117,6 +117,8 @@ static const struct crashtype crashtypes[] = { CRASHTYPE(UNSET_SMEP), CRASHTYPE(CORRUPT_PAC), CRASHTYPE(UNALIGNED_LOAD_STORE_WRITE), + CRASHTYPE(FORTIFY_OBJECT), + CRASHTYPE(FORTIFY_SUBOBJECT), CRASHTYPE(OVERWRITE_ALLOCATION), CRASHTYPE(WRITE_AFTER_FREE), CRASHTYPE(READ_AFTER_FREE), |