On Wed, Mar 15, 2017 at 06:07:39PM +0000, Abel Vesa wrote: > The support for dynamic ftrace with CONFIG_DEBUG_RODATA involves > overriding the weak arch_ftrace_update_code() with a variant which makes > the kernel text writable around the patching. > > This override was however added under the CONFIG_OLD_MCOUNT ifdef, and > CONFIG_OLD_MCOUNT is only enabled if frame pointers are enabled. > > This leads to non-functional dynamic ftrace (ftrace triggers a > WARN_ON()) when CONFIG_DEBUG_RODATA is enabled and CONFIG_FRAME_POINTER > is not. > > Move the override out of that ifdef and into the CONFIG_DYNAMIC_FTRACE > ifdef where it belongs. > > Fixes: 80d6b0c2eed2a ("ARM: mm: allow text and rodata sections to be > read-only") > > Suggested-by: Nicolai Stange <nicsta...@gmail.com> > Suggested-by: Rabin Vincent <ra...@rab.in> > Signed-off-by: Abel Vesa <abelv...@linux.com>
Acked-by: Rabin Vincent <ra...@rab.in>