linuxkasan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