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-rw-r--r--lib/Kconfig.ubsan14
1 files changed, 9 insertions, 5 deletions
diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan
index 98fa559ebd80..a2ae4a8e4fa6 100644
--- a/lib/Kconfig.ubsan
+++ b/lib/Kconfig.ubsan
@@ -27,15 +27,19 @@ config UBSAN_SANITIZE_ALL
Enabling this option will get kernel image size increased
significantly.
-config UBSAN_ALIGNMENT
- bool "Enable checking of pointers alignment"
+config UBSAN_NO_ALIGNMENT
+ bool "Disable checking of pointers alignment"
depends on UBSAN
- default y if !HAVE_EFFICIENT_UNALIGNED_ACCESS
+ default y if HAVE_EFFICIENT_UNALIGNED_ACCESS
help
- This option enables detection of unaligned memory accesses.
- Enabling this option on architectures that support unaligned
+ This option disables the check of unaligned memory accesses.
+ This option should be used when building allmodconfig.
+ Disabling this option on architectures that support unaligned
accesses may produce a lot of false positives.
+config UBSAN_ALIGNMENT
+ def_bool !UBSAN_NO_ALIGNMENT
+
config TEST_UBSAN
tristate "Module for testing for undefined behavior detection"
depends on m && UBSAN