CONFIG_PAGE_POISONING_ZERO: Use zero for poisoning instead of debugging value

General informations

The Linux kernel configuration item CONFIG_PAGE_POISONING_ZERO has multiple definitions:

Use zero for poisoning instead of debugging value found in mm/Kconfig.debug

The configuration item CONFIG_PAGE_POISONING_ZERO:

• prompt: Use zero for poisoning instead of debugging value
• type: bool
• depends on: CONFIG_PAGE_POISONING
• defined in mm/Kconfig.debug
• found in Linux kernels: 4.19–4.20, 5.0–5.10

Help text

Instead of using the existing poison value, fill the pages with zeros. This makes it harder to detect when errors are occurring due to sanitization but the zeroing at free means that it is no longer necessary to write zeros when GFP_ZERO is used on allocation.

If unsure, say N

found in mm/Kconfig.debug

The configuration item CONFIG_PAGE_POISONING_ZERO:

• prompt:
• type: bool
• depends on: CONFIG_PAGE_POISONING
• defined in mm/Kconfig.debug
• found in Linux kernels: 4.6–4.18

Help text

Instead of using the existing poison value, fill the pages with zeros. This makes it harder to detect when errors are occurring due to sanitization but the zeroing at free means that it is no longer necessary to write zeros when GFP_ZERO is used on allocation.

If unsure, say N

Hardware

LKDDb

Raw data from LKDDb:

• (none)

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)

Automatic links from Google (and ads)

Custom Search

Popular queries: