KASan: runtime memory debugger
modulename: common.ko
and/orkasan_init.ko
configname: CONFIG_KASAN
Linux Kernel Configuration
└─>Memory Debugging
└─>KASan: runtime memory debugger
In linux kernel since version 3.10 (release Date: 2013-06-30)
Enables kernel address sanitizer - runtime memory debugger,
designed to find out-of-bounds accesses and use-after-free bugs.
This is strictly a debugging feature and it requires a gcc version
of 4.9.2 or later. Detection of out of bounds accesses to stack or
global variables requires gcc 5.0 or later.
This feature consumes about 1/8 of available memory and brings about
~x3 performance slowdown.
For better error detection enable CONFIG_STACKTRACE,
and add slub_debug=U to boot cmdline.
designed to find out-of-bounds accesses and use-after-free bugs.
This is strictly a debugging feature and it requires a gcc version
of 4.9.2 or later. Detection of out of bounds accesses to stack or
global variables requires gcc 5.0 or later.
This feature consumes about 1/8 of available memory and brings about
~x3 performance slowdown.
For better error detection enable CONFIG_STACKTRACE,
and add slub_debug=U to boot cmdline.
selects
CONFIG_CONSTRUCTORSdepends
CONFIG_HAVE_ARCH_KASANCONFIG_SLUB_DEBUG or CONFIG_CC_HAS_KASAN_GENERIC or CONFIG_HAVE_ARCH_KASAN or CONFIG_CC_HAS_KASAN_SW_TAGS or CONFIG_HAVE_ARCH_KASAN_SW_TAGS or CONFIG_SLUB or CONFIG_SYSFS or CONFIG_SLAB or NOT CONFIG_DEBUG_SLAB