[PATCH 4.9 012/102] kprobes/x86: Fix to set RWX bits correctly before releasing trampoline

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Masami Hiramatsu commit c93f5cf571e7795f97d49ef51b766cf25e328545 upstream. Fix kprobes to set(recover) RWX bits correctly on trampoline buffer before releasing it.

[PATCH 4.9 012/102] kprobes/x86: Fix to set RWX bits correctly before releasing trampoline

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Masami Hiramatsu commit c93f5cf571e7795f97d49ef51b766cf25e328545 upstream. Fix kprobes to set(recover) RWX bits correctly on trampoline buffer before releasing it. Releasing readonly page to