summaryrefslogtreecommitdiff
path: root/drivers/misc/Makefile
diff options
context:
space:
mode:
authorKees Cook <keescook@chromium.org>2017-04-24 13:23:21 -0700
committerKees Cook <keescook@chromium.org>2017-07-26 14:38:03 -0700
commit95925c99b9043d52db626645e6ef5ee5f62c97e4 (patch)
treec7aca11aba82dbf05d5b75e5655be29f0b92bc90 /drivers/misc/Makefile
parent520eccdfe187591a51ea9ab4c1a024ae4d0f68d9 (diff)
lkdtm: Provide more complete coverage for REFCOUNT tests
The existing REFCOUNT_* LKDTM tests were designed only for testing a narrow portion of CONFIG_REFCOUNT_FULL. This moves the tests to their own file and expands their testing to poke each boundary condition. Since the protections (CONFIG_REFCOUNT_FULL and x86-fast) use different saturation values and reach-zero behavior, those have to be build-time set so the tests can actually validate things are happening at the right places. Notably, the x86-fast protection will fail REFCOUNT_INC_ZERO and REFCOUNT_ADD_ZERO since those conditions are not checked (only overflow is critical to protecting refcount_t). CONFIG_REFCOUNT_FULL will warn for each REFCOUNT_*_NEGATIVE test since it provides zero-pinning behaviors (which allows it to pass REFCOUNT_INC_ZERO and REFCOUNT_ADD_ZERO). Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'drivers/misc/Makefile')
-rw-r--r--drivers/misc/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index b0b766416306..d84819dc2468 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -60,6 +60,7 @@ lkdtm-$(CONFIG_LKDTM) += lkdtm_core.o
lkdtm-$(CONFIG_LKDTM) += lkdtm_bugs.o
lkdtm-$(CONFIG_LKDTM) += lkdtm_heap.o
lkdtm-$(CONFIG_LKDTM) += lkdtm_perms.o
+lkdtm-$(CONFIG_LKDTM) += lkdtm_refcount.o
lkdtm-$(CONFIG_LKDTM) += lkdtm_rodata_objcopy.o
lkdtm-$(CONFIG_LKDTM) += lkdtm_usercopy.o