CONFIG_KMSAN: KMSAN: detector of uninitialized values use

General informations

The Linux kernel configuration item CONFIG_KMSAN:

• prompt: KMSAN: detector of uninitialized values use
• type: bool
• depends on: ( CONFIG_HAVE_ARCH_KMSAN && CONFIG_HAVE_KMSAN_COMPILER ) && ( CONFIG_DEBUG_KERNEL && ! CONFIG_KASAN && ! CONFIG_KCSAN ) && (! CONFIG_PREEMPT_RT )
• defined in lib/Kconfig.kmsan
• found in Linux kernels: 6.1–6.8, 6.9-rc+HEAD

Help text

KernelMemorySanitizer (KMSAN) is a dynamic detector of uses of uninitialized values in the kernel. It is based on compiler instrumentation provided by Clang and thus requires Clang to build.

An important note is that KMSAN is not intended for production use, because it drastically increases kernel memory footprint and slows the whole system down.

See Documentation/dev-tools/kmsan.rst for more details.

Hardware

LKDDb

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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