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CONFIG_DEBUG_SLAB: Debug slab memory allocations

General informations

The Linux kernel configuration item CONFIG_DEBUG_SLAB has multiple definitions:

Debug memory allocations found in arch/alpha/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/alpha/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/arm/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/arm/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/arm26/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/arm26/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/frv/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/frv/Kconfig
• found in Linux kernels: 2.6.11

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/i386/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/i386/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/ia64/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/ia64/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/m32r/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/m32r/Kconfig
• found in Linux kernels: 2.6.9

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/m68k/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/m68k/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

(none)

Debug memory allocations found in arch/mips/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/mips/Kconfig
• found in Linux kernels: 2.6.6–2.6.8

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/parisc/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/parisc/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/ppc/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/ppc/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

(none)

Debug memory allocations found in arch/ppc64/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/ppc64/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/s390/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/s390/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/sparc/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/sparc/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/sparc64/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/sparc64/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in arch/um/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: (none)
• defined in arch/um/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

(none)

Debug memory allocations found in arch/x86_64/Kconfig

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in arch/x86_64/Kconfig
• found in Linux kernels: 2.6.0–2.6.8

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug memory allocations found in lib/Kconfig.debug

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL && ( CONFIG_ALPHA || CONFIG_ARM || CONFIG_X86 || CONFIG_IA64 || CONFIG_M68K || CONFIG_MIPS || CONFIG_PARISC || CONFIG_PPC32 || CONFIG_PPC64 || CONFIG_ARCH_S390 || CONFIG_SPARC32 || CONFIG_SPARC64 || CONFIG_USERMODE || CONFIG_X86_64 )
• defined in lib/Kconfig.debug
• found in Linux kernels: 2.6.9–2.6.16

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory.

Debug slab memory allocations found in lib/Kconfig.debug

The configuration item CONFIG_DEBUG_SLAB:

• prompt: Debug slab memory allocations
• type: bool
• depends on: CONFIG_DEBUG_KERNEL && CONFIG_SLAB && ! CONFIG_KMEMCHECK
• defined in lib/Kconfig.debug
• found in Linux kernels: 2.6.17–2.6.39, 3.0–3.9, 3.10-rc+HEAD

Help text

Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory. This can make kmalloc/kfree-intensive workloads much slower.

Hardware

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