linux-kernel - Re: linux-5.10.11 build failure

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Date:   Thu, 28 Jan 2021 15:30:08 +0530
From:   Bhaskar Chowdhury <unixbhaskar@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Chris Clayton <chris2553@...glemail.com>,
        LKML <linux-kernel@...r.kernel.org>, stable@...r.kernel.org
Subject: Re: linux-5.10.11 build failure

On 10:34 Thu 28 Jan 2021, 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?
>
>And what exact gcc version are you using?
>
>thanks,
>
>greg k-h


Okay, as far as the kernel goes ...I have built the 5.10.11 kernel on 5
different distros (Gentoo, Slackware, Debian, Arch and Opensuse-Tumbleweed)
from yesterday ...simple compile with little option tweak ..nothing breaks.

Probably, good fortune of mine! :)

There is "Pathetically and awfully wrote" mundane bash script do the stuff for
me.

~Bhaskar

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