diff options
| author | Laura Abbott <lauraa@codeaurora.org> | 2014-08-19 23:41:43 +0400 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2014-09-08 17:39:18 +0400 |
| commit | 11d91a770f1fff44dafdf88d6089a3451f99c9b6 (patch) | |
| tree | db7874516b61d7df4d85e4529b9ea6e1033624e6 /arch/arm64/Kconfig.debug | |
| parent | b6d4f2800b7bad654caf00654f4bff21594ef838 (diff) | |
| download | linux-11d91a770f1fff44dafdf88d6089a3451f99c9b6.tar.xz | |
arm64: Add CONFIG_DEBUG_SET_MODULE_RONX support
In a similar fashion to other architecture, add the infrastructure
and Kconfig to enable DEBUG_SET_MODULE_RONX support. When
enabled, module ranges will be marked read-only/no-execute as
appropriate.
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
[will: fixed off-by-one in module end check]
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/Kconfig.debug')
| -rw-r--r-- | arch/arm64/Kconfig.debug | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig.debug b/arch/arm64/Kconfig.debug index 4ee8e90b7a45..0a12933e50ed 100644 --- a/arch/arm64/Kconfig.debug +++ b/arch/arm64/Kconfig.debug @@ -43,4 +43,15 @@ config ARM64_RANDOMIZE_TEXT_OFFSET of TEXT_OFFSET and platforms must not require a specific value. +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 |