kernelconfig_penguin
depends
CONFIG_DEBUG_KERNEL
CONFIG_HAVE_ARCH_KASAN
CONFIG_KASAN
NOT CONFIG_COMPILE_TEST

KAsan: extra checks

configname: CONFIG_KASAN_EXTRA

Linux Kernel Configuration
└─> Kernel hacking
└─> Memory Debugging
└─> KAsan: extra checks

In linux kernel since version 3.10 (release Date: 2013-06-30)  

This enables further checks in the kernel address sanitizer, for now
it only includes the address-use-after-scope check that can lead
to excessive kernel stack usage, frame size warnings and longer
compile time.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 has more