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CONFIG_DEBUG_STRICT_USER_COPY_CHECKS: Strict copy size checks

General informations

The Linux kernel configuration item CONFIG_DEBUG_STRICT_USER_COPY_CHECKS has multiple definitions:

Strict copy size checks found in arch/parisc/Kconfig.debug

The configuration item CONFIG_DEBUG_STRICT_USER_COPY_CHECKS:

Help text

Enabling this option turns a certain set of sanity checks for user copy operations into compile time failures.

The copy_from_user() etc checks are there to help test if there are sufficient security checks on the length argument of the copy operation, by having gcc prove that the argument is within bounds.

If unsure, or if you run an older (pre 4.4) gcc, say N.

Strict copy size checks found in arch/sparc/Kconfig.debug

The configuration item CONFIG_DEBUG_STRICT_USER_COPY_CHECKS:

Help text

Enabling this option turns a certain set of sanity checks for user copy operations into compile time failures.

The copy_from_user() etc checks are there to help test if there are sufficient security checks on the length argument of the copy operation, by having gcc prove that the argument is within bounds.

If unsure, or if you run an older (pre 4.4) gcc, say N.

Strict copy size checks found in arch/x86/Kconfig.debug

The configuration item CONFIG_DEBUG_STRICT_USER_COPY_CHECKS:

Help text

Enabling this option turns a certain set of sanity checks for user copy operations into compile time failures.

The copy_from_user() etc checks are there to help test if there are sufficient security checks on the length argument of the copy operation, by having gcc prove that the argument is within bounds.

If unsure, or if you run an older (pre 4.4) gcc, say N.

Strict user copy size checks found in arch/s390/Kconfig.debug

The configuration item CONFIG_DEBUG_STRICT_USER_COPY_CHECKS:

Help text

Enabling this option turns a certain set of sanity checks for user copy operations into compile time warnings.

The copy_from_user() etc checks are there to help test if there are sufficient security checks on the length argument of the copy operation, by having gcc prove that the argument is within bounds.

If unsure, or if you run an older (pre 4.4) gcc, say N.

Strict user copy size checks found in lib/Kconfig.debug

The configuration item CONFIG_DEBUG_STRICT_USER_COPY_CHECKS:

Help text

Enabling this option turns a certain set of sanity checks for user copy operations into compile time failures.

The copy_from_user() etc checks are there to help test if there are sufficient security checks on the length argument of the copy operation, by having gcc prove that the argument is within bounds.

If unsure, say N.

Hardware

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