On Thu, Sep 16, 2021 at 11:11:00PM -0700, Brendan Higgins wrote: > The structleak plugin causes the stack frame size to grow immensely when > used with KUnit: > > ../drivers/iio/test/iio-test-format.c: In function ‘iio_test_iio_format_value_fixedpoint’: > ../drivers/iio/test/iio-test-format.c:98:1: warning: the frame size of 2336 bytes is larger than 2048 bytes [-Wframe-larger-than=] > > Turn it off in this file. Given that these are all for KUnit tests, is it possible there are going to be other CONFIGs that will interact poorly (e.g. KASAN)? Maybe there needs to be a small level of indirection with something like: DISABLE_UNDER_KUNIT := $(DISABLE_STRUCTLEAK_PLUGIN) export DISABLE_UNDER_KUNIT then all of these become: +CFLAGS_iio-test-format.o += $(DISABLE_UNDER_KUNIT) Either way, I think these are fine to add. Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> > > Co-developed-by: Arnd Bergmann <arnd@xxxxxxxx> > Signed-off-by: Brendan Higgins <brendanhiggins@xxxxxxxxxx> > --- > drivers/iio/test/Makefile | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/iio/test/Makefile b/drivers/iio/test/Makefile > index f1099b4953014..467519a2027e5 100644 > --- a/drivers/iio/test/Makefile > +++ b/drivers/iio/test/Makefile > @@ -5,3 +5,4 @@ > > # Keep in alphabetical order > obj-$(CONFIG_IIO_TEST_FORMAT) += iio-test-format.o > +CFLAGS_iio-test-format.o += $(DISABLE_STRUCTLEAK_PLUGIN) > -- > 2.33.0.464.g1972c5931b-goog > -- Kees Cook
