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CONFIG_DEBUG_PAGEALLOC: Debug page memory allocations

General informations

The Linux kernel configuration item CONFIG_DEBUG_PAGEALLOC has multiple definitions:

Debug page memory allocations found in arch/i386/Kconfig.debug

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Debug page memory allocations found in arch/m32r/Kconfig.debug

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Debug page memory allocations found in arch/powerpc/Kconfig.debug

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Debug page memory allocations found in arch/s390/Kconfig.debug

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a slowdown, but helps to find certain types of memory corruptions.

Debug page memory allocations found in arch/sparc/Kconfig.debug

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Debug page memory allocations found in arch/sparc64/Kconfig.debug

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Debug page memory allocations found in arch/x86/Kconfig.debug

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Debug page memory allocations found in mm/Kconfig.debug

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruption.

For architectures which don't enable ARCH_SUPPORTS_DEBUG_PAGEALLOC, fill the pages with poison patterns after free_pages() and verify the patterns before alloc_pages(). Additionally, this option cannot be enabled in combination with hibernation as that would result in incorrect warnings of memory corruption after a resume because free pages are not saved to the suspend image.

Page alloc debugging found in arch/frv/Kconfig.debug

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Page alloc debugging found in arch/frv/Kconfig

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Page alloc debugging found in arch/i386/Kconfig.debug

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Page alloc debugging found in arch/i386/Kconfig

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Page alloc debugging found in arch/m32r/Kconfig.debug

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Page alloc debugging found in arch/m32r/Kconfig

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Page alloc debugging found in arch/sparc64/Kconfig.debug

The configuration item CONFIG_DEBUG_PAGEALLOC:

Help text

Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions.

Hardware

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