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CONFIG_KASAN: KASan: runtime memory debugger

General informations

The Linux kernel configuration item CONFIG_KASAN:

Help text

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 STACKTRACE. Currently KASAN doesn't work with DEBUG_SLAB (the resulting kernel does not boot).



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