On Tue, Mar 17, 2020 at 09:56:14PM +0000, Will Deacon wrote: > On Thu, Feb 27, 2020 at 04:22:42PM -0800, Kees Cook wrote: > > We don't want to depend on the linker's orphan section placement > > heuristics as these can vary between linkers, and may change between > > versions. All sections need to be explicitly named in the linker > > script. > > > > Explicitly include debug sections when they're present. Add .eh_frame* > > to discard as it seems that these are still generated even though > > -fno-asynchronous-unwind-tables is being specified. Add .plt and > > .data.rel.ro to discards as they are not actually used. Add .got.plt > > to the image as it does appear to be mapped near .data. Finally enable > > orphan section warnings. > > Hmm, I don't understand what .got.plt is doing here. Please can you > elaborate? I didn't track it down, but it seems to have been present (and merged into the kernel .data) for a while now. I can try to track this down if you want? -- Kees Cook
