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CONFIG_VMAP_STACK: Use a virtually-mapped stack

General informations

The Linux kernel configuration item CONFIG_VMAP_STACK:

Help text

Enable this if you want the use virtually-mapped kernel stacks with guard pages. This causes kernel stack overflows to be caught immediately rather than causing difficult-to-diagnose corruption.

To use this with KASAN, the architecture must support backing virtual mappings with real shadow memory, and KASAN_VMALLOC must be enabled.

Hardware

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