When enabling UBSAN_SANITIZE_ALL, the kernel image size gets increased significantly (~3x). So, it sounds better to have some note in Kconfig.
And, fixed a typo.
Signed-off-by: Yang Shi yang.shi@linaro.org --- lib/Kconfig.ubsan | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan index 49518fb..e07c1ba 100644 --- a/lib/Kconfig.ubsan +++ b/lib/Kconfig.ubsan @@ -18,6 +18,8 @@ config UBSAN_SANITIZE_ALL This option activates instrumentation for the entire kernel. If you don't enable this option, you have to explicitly specify UBSAN_SANITIZE := y for the files/directories you want to check for UB. + Enabling this option will get kernel image size increased + significantly.
config UBSAN_ALIGNMENT bool "Enable checking of pointers alignment" @@ -25,5 +27,5 @@ config UBSAN_ALIGNMENT default y if !HAVE_EFFICIENT_UNALIGNED_ACCESS help This option enables detection of unaligned memory accesses. - Enabling this option on architectures that support unalligned + Enabling this option on architectures that support unaligned accesses may produce a lot of false positives.