linux-kernel - linux-5.10.11 build failure

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Date:   Thu, 28 Jan 2021 09:17:10 +0000
From:   Chris Clayton <chris2553@...glemail.com>
To:     LKML <linux-kernel@...r.kernel.org>, stable@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: linux-5.10.11 build failure

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


Thanks,

Chris