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| author | Laura Abbott <lauraa@codeaurora.org> | 2013-06-17 10:29:14 -0700 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-12-11 09:53:21 +0000 |
| commit | dca9aa92fc7caa3620b31ced1535968f4aeeb967 (patch) | |
| tree | 8bc531d582eae3546658dcf9cabf1394523cdd6c /arch/arm/Kconfig.debug | |
| parent | 75374ad47c6465de6c098d7b913fe02d6131195c (diff) | |
| download | linux-dca9aa92fc7caa3620b31ced1535968f4aeeb967.tar.gz | |
ARM: add DEBUG_SET_MODULE_RONX option to Kconfig
Now that all the page setting infrastructure is in place,
Add the DEBUG_SET_MODULE_RONX to the ARM debugging Kconfig.
When turned on, data sections for modules will be marked as NX
and read only sections will be marked as such.
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig.debug')
| -rw-r--r-- | arch/arm/Kconfig.debug | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 0603a6a53902..1043cb80235f 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -1162,4 +1162,15 @@ config PID_IN_CONTEXTIDR additional instructions during context switch. Say Y here only if you are planning to use hardware trace tools with this kernel. +config DEBUG_SET_MODULE_RONX + bool "Set loadable kernel module data as NX and text as RO" + depends on MODULES + ---help--- + This option helps catch unintended modifications to loadable + kernel module's text and read-only data. It also prevents execution + of module data. Such protection may interfere with run-time code + patching and dynamic kernel tracing - and they might also protect + against certain classes of kernel exploits. + If in doubt, say "N". + endmenu |