linux-kernel - Re: Linux 6.18 amdgpu build error

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Message-ID: <1f31b86d-283c-4878-92d0-ab90aed0c58d@roeck-us.net>
Date: Wed, 3 Dec 2025 17:06:02 -0800
From: Guenter Roeck <linux@...ck-us.net>
To: Shuah Khan <skhan@...uxfoundation.org>
Cc: Alexander Deucher <Alexander.Deucher@....com>,
 Linus Torvalds <torvalds@...ux-foundation.org>,
 Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
 amd-gfx@...ts.freedesktop.org, dri-devel <dri-devel@...ts.freedesktop.org>
Subject: Re: Linux 6.18 amdgpu build error

On 12/3/25 14:16, Shuah Khan wrote:
> On 12/2/25 14:23, Guenter Roeck wrote:
>> On 12/2/25 13:01, Shuah Khan wrote:
>>> On 12/1/25 19:31, Guenter Roeck wrote:
>>>> On Mon, Dec 01, 2025 at 03:17:49PM -0700, Shuah Khan wrote:
>>>>> Hi Alex,
>>>>>
>>>>> I am seeing the following make error on Linux 6.18.
>>>>> I started seeing build failures since rc7 and rc6
>>>>> build was just fine on the same config file.
>>>>>
>>>>> LD [M]  drivers/gpu/drm/amd/amdgpu/amdgpu.o
>>>>> drivers/gpu/drm/amd/amdgpu/amdgpu.o: error: objtool: elf_init_reloc: .rela.orc_unwind_ip: reloc 39935 already initialized!
>>>>> make[6]: *** [scripts/Makefile.build:503: drivers/gpu/drm/amd/amdgpu/amdgpu.o] Error 255
>>>>> make[6]: *** Deleting file 'drivers/gpu/drm/amd/amdgpu/amdgpu.o'
>>>>> make[5]: *** [scripts/Makefile.build:556: drivers/gpu/drm/amd/amdgpu] Error 2
>>>>> make[4]: *** [scripts/Makefile.build:556: drivers/gpu/drm] Error 2
>>>>> make[3]: *** [scripts/Makefile.build:556: drivers/gpu] Error 2
>>>>> make[2]: *** [scripts/Makefile.build:556: drivers] Error 2
>>>>> make[1]: *** [/linux/linux_6.18/Makefile:2010: .] Error 2
>>>>> make: *** [Makefile:248: __sub-make] Error 2
>>>>>
>>>>> I tried "make clean" and "make distclean" just in case, still see
>>>>> the same error.
>>>>>
>>>>
>>>> My test system does not report any problems. What is the configuration
>>>> and compiler ?
>>>>
>>>
>>> My one test system didn't report any problems. The other one did.
>>> I am using gcc and the config is the same as the one used to build
>>> 6.18-rc6 with no issues.
>>>
>>> I will keep digging to find what's wrong on my system.
>>>
>>> gcc version 14.2.0 (Debian 14.2.0-19)
>>>
>>
>> Interesting. That reminds me ... I used to have that kind of machine specific
>> problems when building with CONFIG_RANDSTRUCT enabled. I worked around it
>> by using gcc builds with plugin support disabled. In my case, there was
>> nothing wrong with the system, just that each system has a slightly different
>> hardware configuration which somehow influenced structure randomization, even
>> across "make clean/distclean".
>>
> 
> CONFIG_RANDSTRUCT is disabled and so are the GCC_PLUGINS in my config.

I guess that would have been too easy...

> I am also seeing issues with cloning kernel.org repos on my system after
> a recent update:
> 
> remote: Enumerating objects: 11177736, done.
> remote: Counting objects: 100% (1231/1231), done.
> remote: Compressing objects: 100% (624/624), done.
> remote: Total 11177736 (delta 855), reused 781 (delta 606), pack-reused 11176505 (from 1)
> Receiving objects: 100% (11177736/11177736), 3.01 GiB | 7.10 MiB/s, done.
> Resolving deltas: 100% (9198323/9198323), done.
> fatal: did not receive expected object 0002003e951b5057c16de5a39140abcbf6e44e50
> fatal: fetch-pack: invalid index-pack output
> 

Outch, that hurts. Hope your file system isn't corrupted.

Guenter