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CONFIG_DEBUG_HUNT_FOR_ZERO: Catch NULL pointer reads/writes

General informations

The Linux kernel configuration item CONFIG_DEBUG_HUNT_FOR_ZERO has multiple definitions:

Catch NULL pointer reads/writes found in arch/blackfin/Kconfig.debug

The configuration item CONFIG_DEBUG_HUNT_FOR_ZERO:

Help text

Say Y here to catch reads/writes to anywhere in the memory range from 0x0000 - 0x0FFF (the first 4k) of memory. This is useful in catching common programming errors such as NULL pointer dereferences.

Misbehaving applications will be killed (generate a SEGV) while the kernel will trigger a panic.

Enabling this option will take up an extra entry in CPLB table. Otherwise, there is no extra overhead.

Catch NULL pointer reads/writes found in arch/blackfin/Kconfig

The configuration item CONFIG_DEBUG_HUNT_FOR_ZERO:

Help text

Say Y here to catch reads/writes to anywhere in the memory range from 0x0000 - 0x0FFF (the first 4k) of memory. This is useful in catching common programming errors such as NULL pointer dereferences.

Misbehaving applications will be killed (generate a SEGV) while the kernel will trigger a panic.

Enabling this option will take up an extra entry in CPLB table. Otherwise, there is no extra overhead.

Hardware

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