On Mon, 27 Apr 2020 16:47:47 +0800 Zong Li <zong.li@xxxxxxxxxx> wrote: > > > + This is useful for discovering cases where the kernel is leaving > > > + W+X mappings after applying NX, as such mappings are a security risk. > > > + This check also includes UXN, which should be set on all kernel > > > + mappings. > > > > "UXN" is the name of a bit in the arm64 page-table descriptors, so this > > should be reworded now that it's in generic help text. > > > > It's exactly. Sorry for missing the statement. > > Hi Andrew, > Shall I send a next version patch to fix it? It should be "This is > useful for discovering cases where the kernel is leaving W+X mappings > after applying NX, as such mappings are a security risk." here. I'll add this: --- a/mm/Kconfig.debug~mm-add-debug_wx-support-fix +++ a/mm/Kconfig.debug @@ -128,8 +128,8 @@ config DEBUG_WX help Generate a warning if any W+X mappings are found at boot. - This is useful for discovering cases where the kernel is leaving - W+X mappings after applying NX, as such mappings are a security risk. + This is useful for discovering cases where the kernel is leaving W+X + mappings after applying NX, as such mappings are a security risk. This check also includes UXN, which should be set on all kernel mappings. _
