On 02/06/2016 03:05 AM, Yang Shi wrote:

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

Acked-by: Andrey Ryabinin aryabinin@virtuozzo.com

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.