Den 28.1.2021 kl. 12:05, skrev Chris Clayton: > > On 28/01/2021 09:34, Greg Kroah-Hartman wrote: >> On Thu, Jan 28, 2021 at 09:17:10AM +0000, Chris Clayton wrote: >>> Hi, >>> >>> Building 5.10.11 fails on my (x86-64) laptop thusly: >>> >>> .. >>> >>> AS arch/x86/entry/thunk_64.o >>> CC arch/x86/entry/vsyscall/vsyscall_64.o >>> AS arch/x86/realmode/rm/header.o >>> CC arch/x86/mm/pat/set_memory.o >>> CC arch/x86/events/amd/core.o >>> CC arch/x86/kernel/fpu/init.o >>> CC arch/x86/entry/vdso/vma.o >>> CC kernel/sched/core.o >>> arch/x86/entry/thunk_64.o: warning: objtool: missing symbol for insn at offset 0x3e >>> >>> AS arch/x86/realmode/rm/trampoline_64.o >>> make[2]: *** [scripts/Makefile.build:360: arch/x86/entry/thunk_64.o] Error 255 >>> make[2]: *** Deleting file 'arch/x86/entry/thunk_64.o' >>> make[2]: *** Waiting for unfinished jobs.... >>> >>> .. >>> >>> Compiler is latest snapshot of gcc-10. >>> >>> Happy to test the fix but please cc me as I'm not subscribed >> >> Can you do 'git bisect' to track down the offending commit? >> > > Sure, but I'll hold that request for a while. I updated to binutils-2.36 on Monday and I'm pretty sure that is a feature > of this build fail. I've reverted binutils to 2.35.1, and the build succeeds. Updated to 2.36 again and, surprise, > surprise, the kernel build fails again. > > I've had a glance at the binutils ML and there are all sorts of issues being reported, but it's beyond my knowledge to > assess if this build error is related to any of them. > > I'll stick with binutils-2.35.1 for the time being. > >> And what exact gcc version are you using? >> > > It's built from the 10-20210123 snapshot tarball. > > I can report this to the binutils folks, but might it be better if the objtool maintainer looks at it first? The > binutils change might just have opened the gate to a bug in objtool. > >> thanks, >> >> greg k-h >> > AFAIK you need this in stable trees: From 1d489151e9f9d1647110277ff77282fe4d96d09b Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> Date: Thu, 14 Jan 2021 16:14:01 -0600 Subject: [PATCH] objtool: Don't fail on missing symbol table -- Thomas
