| Message ID | 20140220174422.GA27412@redacted.bos.redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
--- 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
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 <kyle@redhat.com>