With both options set, we're seeing an Oops while loading bridge.ko, as netfilter is trying to use jump labels on the module .text after it's been marked read-only. I'll cook up a patch to do what X86 does and remap the page read-write while it's being patched, but for 3.14, we should mark them as exclusive so others don't hit this crash.
Signed-off-by: Kyle McMartin <[email protected]> --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -1197,7 +1197,7 @@ config PID_IN_CONTEXTIDR config DEBUG_SET_MODULE_RONX bool "Set loadable kernel module data as NX and text as RO" - depends on MODULES + depends on MODULES && !(JUMP_LABEL || KPROBES) ---help--- This option helps catch unintended modifications to loadable kernel module's text and read-only data. It also prevents execution -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
