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CONFIG_STACK_GUARD: Size of the guard area (128-1024)

General informations

The Linux kernel configuration item CONFIG_STACK_GUARD:

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This allows you to specify the size of the guard area at the lower end of the kernel stack. If the kernel stack points into the guard area on function entry an illegal operation is triggered. The size needs to be a power of 2. Please keep in mind that the size of an interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit. The minimum size for the stack guard should be 256 for 31 bit and 512 for 64 bit.



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