On Thu, Feb 11, 2021 at 10:46:05AM -0800, Nick Desaulniers wrote: > On Thu, Feb 11, 2021 at 5:55 AM Greg Kroah-Hartman > <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > > > On Thu, Feb 11, 2021 at 09:32:03PM +0800, Xi Ruoyao wrote: > > > Hi all, > > > > > > The latest GNU assembler (binutils-2.36.1) is removing unused section symbols > > > like Clang [1]. So linux-5.10.15 can't be built with binutils-2.36.1 now. It > > > has been reported as https://bugzilla.kernel.org/show_bug.cgi?id=211693. > > Xi, > Happy Lunar New Year to you, too, and thanks for the report. Did you > observe such segfaults for older branches of stable? > > > 2.36 of binutils fails to build the 4.4.y tree right now as well, but as > > objtool isn't there, I don't know what to do about it :( > > Greg, > There may be multiple issues in the latest binutils release for the > kernel; we should still avoid segfaults in host tools so I do > recommend considering this patch for inclusion at least into 5.10.y. > Arnd's report in https://github.com/ClangBuiltLinux/linux/issues/1207 > mentions this was found via randconfig testing, so likely some set of > configs is needed to reproduce reliably. > > Do you have more info about the failure you're observing? Trolling > lore, I only see: > https://lore.kernel.org/stable/YCLeJcQFsDIsrAEc@xxxxxxxxx/ > (Maybe it was reported on a different list; I only searched stable ML). I didn't report it anywhere. Here's the output of doing a 'make allmodconfig' on the latest 4.4.257 release failing with binutils 2.36 Cannot find symbol for section 8: .text.unlikely. kernel/kexec_file.o: failed make[1]: *** [scripts/Makefile.build:277: kernel/kexec_file.o] Error 1 make[1]: *** Deleting file 'kernel/kexec_file.o' make[1]: *** Waiting for unfinished jobs.... 4.9.257 works fine, probably because we are using objtool? Any ideas are appreciated. thanks, greg k-h
