[llvm-dev] SectionMemoryManager::finalizeMemory ... read only data become executable?

[Tim Northover via llvm-dev]

On 15 July 2017 at 08:55, 陳韋任 via llvm-dev <llvm-dev at lists.llvm.org> wrote:
> I guess my reply is a little bit misleading. Since JIT will emit and
> *execute* code in the memory,

Not all bytes that get emitted are intended to be executed. In ELF
section terms, .text needs to be executable, but .rodata doesn't. It
contains data that will be loaded by the actual instructions so it
needs to be readable, but making it executable is a potential security
risk.

Cheers.

Tim.