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The Linux kernel configuration item CONFIG_DEBUG_STACKOVERFLOW
has multiple definitions:
lib/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL && CONFIG_HAVE_DEBUG_STACKOVERFLOW
Say Y here if you want to check for overflows of kernel, IRQ and exception stacks (if your architecture uses them). This option will show detailed messages if free stack space drops below a certain limit.
These kinds of bugs usually occur when call-chains in the kernel get too deep, especially when interrupts are involved.
Use this in cases where you see apparently random memory corruption, especially if it appears in 'struct thread_info'
If in doubt, say "N".
arch/openrisc/Kconfig
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
(none)
Make extra checks for space available on stack in some critical functions. This will cause kernel to run a bit slower, but will catch most of kernel stack overruns and exit gracefully.
Say Y if you are unsure.
arch/x86/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
Say Y here if you want to check the overflows of kernel, IRQ and exception stacks. This option will cause messages of the stacks in detail when free stack space drops below a certain limit. If in doubt, say "N".
arch/tile/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
This option will cause messages to be printed if free stack space drops below a certain limit.
arch/powerpc/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
This option will cause messages to be printed if free stack space drops below a certain limit.
arch/parisc/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
Say Y here if you want to check the overflows of kernel, IRQ and exception stacks. This option will cause messages of the stacks in detail when free stack space drops below a certain limit. If in doubt, say "N".
arch/mn10300/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
(none)
arch/mips/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
This option will cause messages to be printed if free stack space drops below a certain limit(2GB on MIPS). The debugging option provides another way to check stack overflow happened on kernel mode stack usually caused by nested interruption.
arch/metag/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
This option will cause messages to be printed if free stack space drops below a certain limit.
arch/m32r/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
This option will cause messages to be printed if free stack space drops below a certain limit.
arch/frv/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
(none)
arch/blackfin/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
This option will cause messages to be printed if free stack space drops below a certain limit.
arch/arc/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
This option will cause messages to be printed if free stack space drops below a certain limit.
arch/sh/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL && CONFIG_SUPERH32
This option will cause messages to be printed if free stack space drops below a certain limit.
arch/x86_64/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
This option will cause messages to be printed if free stack space drops below a certain limit.
arch/i386/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
This option will cause messages to be printed if free stack space drops below a certain limit.
arch/ppc64/Kconfig.debug
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
This option will cause messages to be printed if free stack space drops below a certain limit.
arch/frv/Kconfig
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
(none)
arch/m32r/Kconfig
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
(none)
arch/ppc64/Kconfig
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
(none)
arch/i386/Kconfig
The configuration item CONFIG_DEBUG_STACKOVERFLOW:
CONFIG_DEBUG_KERNEL
(none)
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(none)
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