linux kasan 使用举例

1，使用kasan

> Kernel hacking > Memory Debugging 

 

选择INLINE instruction

2,查看配置后的结果：

配置前

lark@ubuntu:~/Public/rk356x-linux/kernel$ cat .config | grep -i "slub"
CONFIG_SLUB_SYSFS=y
CONFIG_SLUB_DEBUG=y
# CONFIG_SLUB_MEMCG_SYSFS_ON is not set
CONFIG_SLUB=y
CONFIG_SLUB_CPU_PARTIAL=y
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_SLUB_STATS is not set
lark@ubuntu:~/Public/rk356x-linux/kernel$ cat .config | grep -i "kasan"
CONFIG_HAVE_ARCH_KASAN=y
CONFIG_HAVE_ARCH_KASAN_SW_TAGS=y
CONFIG_HAVE_ARCH_KASAN_VMALLOC=y
CONFIG_CC_HAS_KASAN_GENERIC=y
# CONFIG_KASAN is not set

配置后 

lark@ubuntu:~/Public/rk356x-linux/rk356x-linux/kernel$ cat .config | grep -i "slub"
CONFIG_SLUB_SYSFS=y
CONFIG_SLUB_DEBUG=y
# CONFIG_SLUB_MEMCG_SYSFS_ON is not set
CONFIG_SLUB=y
CONFIG_SLUB_CPU_PARTIAL=y
CONFIG_SLUB_DEBUG_ON=y
CONFIG_SLUB_STATS=y

lark@ubuntu:~/Public/rk356x-linux/kernel$ cat .config | grep -i "kasan"
CONFIG_KASAN_SHADOW_OFFSET=0xdffffc0000000000
CONFIG_HAVE_ARCH_KASAN=y
CONFIG_HAVE_ARCH_KASAN_VMALLOC=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_KASAN=y
CONFIG_KASAN_GENERIC=y
# CONFIG_KASAN_OUTLINE is not set
CONFIG_KASAN_INLINE=y
CONFIG_KASAN_STACK=y
# CONFIG_KASAN_VMALLOC is not set
# CONFIG_KASAN_MODULE_TEST is not set

 Public\rk356x-linux\rk356x-linux\kernel\arch\arm64\configs\rockchip_linux_defconfig

lark@ubuntu:~/Public/rk356x-linux/kernel$ cat arch/arm64/configs/rockchip_linux_defconfig | grep "KASAN"
CONFIG_HAVE_ARCH_KASAN=y
CONFIG_HAVE_ARCH_KASAN_SW_TAGS=y
CONFIG_HAVE_ARCH_KASAN_VMALLOC=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_KASAN=y
CONFIG_KASAN_GENERIC=y
# CONFIG_KASAN_OUTLINE is not set
CONFIG_KASAN_INLINE=y
CONFIG_KASAN_STACK=y
CONFIG_KASAN_VMALLOC=y
# CONFIG_KASAN_MODULE_TEST is not se 

3，举例