mm, kasan: SLAB support

[cascardo/linux.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index eed9987..1e9a607 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -342,6 +342,18 @@ config FRAME_POINTER
          larger and slower, but it gives very useful debugging information
          in case of kernel bugs. (precise oopses/stacktraces/warnings)
 
+config STACK_VALIDATION
+       bool "Compile-time stack metadata validation"
+       depends on HAVE_STACK_VALIDATION
+       default n
+       help
+         Add compile-time checks to validate stack metadata, including frame
+         pointers (if CONFIG_FRAME_POINTER is enabled).  This helps ensure
+         that runtime stack traces are more reliable.
+
+         For more information, see
+         tools/objtool/Documentation/stack-validation.txt.
+
 config DEBUG_FORCE_WEAK_PER_CPU
        bool "Force weak per-cpu definitions"
        depends on DEBUG_KERNEL
@@ -546,7 +558,7 @@ config DEBUG_KMEMLEAK_DEFAULT_OFF
 
 config DEBUG_STACK_USAGE
        bool "Stack utilization instrumentation"
-       depends on DEBUG_KERNEL && !IA64 && !PARISC && !METAG
+       depends on DEBUG_KERNEL && !IA64
        help
          Enables the display of the minimum amount of free stack which each
          task has ever had available in the sysrq-T and sysrq-P debug output.
@@ -684,6 +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