On Fri, Jan 15, 2021 at 07:23:00PM +0100, Borislav Petkov wrote: > On Thu, Jan 07, 2021 at 11:34:15PM +0100, Arnd Bergmann wrote: > > From: Arnd Bergmann <[email protected]> > > > > When 5-level page tables are enabled, clang triggers a BUILD_BUG_ON(): > > I have CONFIG_X86_5LEVEL=y, CONFIG_EFI=y and am using Debian clang > version 10.0.1-8+b1 but my .config builds just fine. > > How do you trigger this?
I triggered it with CONFIG_UBSAN=y + CONFIG_UBSAN_UNSIGNED_OVERFLOW=y (it can be exposed with an allyesconfig/allmodconfig on mainline currently). Cheers, Nathan
