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-rw-r--r--lib/Kconfig.debug21
1 files changed, 21 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 5a60f45cd9bb..532d4d52d1df 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -696,6 +696,27 @@ source "lib/Kconfig.kasan"
endmenu # "Memory Debugging"
+config ARCH_HAS_KCOV
+ bool
+ help
+ KCOV does not have any arch-specific code, but currently it is enabled
+ only for x86_64. KCOV requires testing on other archs, and most likely
+ disabling of instrumentation for some early boot code.
+
+config KCOV
+ bool "Code coverage for fuzzing"
+ depends on ARCH_HAS_KCOV
+ select DEBUG_FS
+ help
+ KCOV exposes kernel code coverage information in a form suitable
+ for coverage-guided fuzzing (randomized testing).
+
+ If RANDOMIZE_BASE is enabled, PC values will not be stable across
+ different machines and across reboots. If you need stable PC values,
+ disable RANDOMIZE_BASE.
+
+ For more details, see Documentation/kcov.txt.
+
config DEBUG_SHIRQ
bool "Debug shared IRQ handlers"
depends on DEBUG_KERNEL