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Commit dca9aa92 authored by Laura Abbott's avatar Laura Abbott Committed by Russell King
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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: default avatarLaura Abbott <lauraa@codeaurora.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 75374ad4

arch/arm/Kconfig.debug

+11 −0
Original line number Diff line number Diff line
@@ -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".



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