Re: 'make bzImage' compile error at x86_64 platform: FAILED unresolved symbol udp_sock

Re: 'make bzImage' compile error at x86_64 platform: FAILED unresolved symbol udp_sock

[FanJun Kong]

Hi, developer
I met this on Arm64 and I am using 5.10.89 + xenomai3.2.1

My gcc version:
gcc version 7.5.0 (Linaro GCC 7.5-2019.12)

Thanks

Kong

Re: 'make bzImage' compile error at x86_64 platform: FAILED unresolved symbol udp_sock

[Richard Weinberger]

On Thu, Apr 14, 2022 at 9:24 AM FanJun Kong via Xenomai
<xenomai@xenomai.org> wrote:
>
> Hi, developer
> I met this on Arm64 and I am using 5.10.89 + xenomai3.2.1

Can you please share the full error message you get?
I'd like to know which function/object needs udp_sock.

-- 
Thanks,
//richard

Re: 'make bzImage' compile error at x86_64 platform: FAILED unresolved symbol udp_sock

[FanJun Kong]

I met some error when I was building kernel 5.10

FAILED unresolved symbol udp_sock
make: *** [Makefile:1179: vmlinux] Error 255

and when I make some changes to .config, another error shows up

FAILED unresolved symbol udp6_sock
make: *** [Makefile:1179: vmlinux] Error 255

If I disable CONFIG_NET no error any more,

and I found another bug exactly same with mine:
https://www.mail-archive.com/xenomai@xenomai.org/msg21778.html

but, when I using prepare-kernel.sh to apply patch from fresh and build all
again, it works

I found a similar bug here:
https://www.mail-archive.com/netdev@vger.kernel.org/msg358778.html

Thanks very much.

Kong

On Thu, Apr 14, 2022 at 6:37 PM Richard Weinberger <
richard.weinberger@gmail.com> wrote:

> On Thu, Apr 14, 2022 at 9:24 AM FanJun Kong via Xenomai
> <xenomai@xenomai.org> wrote:
> >
> > Hi, developer
> > I met this on Arm64 and I am using 5.10.89 + xenomai3.2.1
>
> Can you please share the full error message you get?
> I'd like to know which function/object needs udp_sock.
>
> --
> Thanks,
> //richard
>

Re: 'make bzImage' compile error at x86_64 platform: FAILED unresolved symbol udp_sock

[Jan Kiszka]

On 21.12.21 10:18, Jiayu Cao via Xenomai wrote:
> Alright, I compiled the kernel at Ubuntu 18.04 with GCC version 7.5.0
> successfully. The solution is kind of silly but it does work. Just
> wondering that mistake is related to Ubuntu or GCC version...
> 

I would start with looking for "udp_sock" in the delta between upstream
and that Ubuntu kernel. Or try if the same compiler from 20.04 also
triggers this when compiling an official Dovetail release. In that
latter case, the issue may relate to different default compiler settings
under Ubuntu.

Jan

> Jiayu Cao <bitterblossom5486@gmail.com> 于2021年12月21日周二 16:36写道：
> 
>> I downloaded linux-dovetail source code from
>> https://source.denx.de/Xenomai/linux-dovetail, then I got the same
>> problem too. I compiled the kernel image on the ubuntu20 virtual machine.
>> So I guess it might be the issue of OS version or VM?
>>
>> Jiayu Cao <bitterblossom5486@gmail.com> 于2021年12月21日周二 12:02写道：
>>
>>> Hi Xenomai development group:
>>>
>>> I am working on Xenomai 3.2.1 and Ubuntu 20.04 OS.
>>> I am trying to build a kernel image based on the linux-oem-5.10.0-1044.46
>>> kernel, which is a Ubuntu kernel and the mainline base version is *Linux
>>> 5.10.46*. The kernel's source code folder path
>>> is ~/linux-oem-5.10-5.10.0/.
>>> Then I extracted the Dovetail patch to linux-oem-5.10-5.10.0/ folder ,
>>> which version is *patch-5.10.46-dovetail1.patch.bz2*. Then I typed the
>>> following commands:
>>> ```
>>> cd linux-oem-5.10-5.10.0/
>>>
>>> ~/Downloads/xenomai-v3.2.1/scripts/prepare-kernel.sh --arch=x86_64
>>> --dovetail=patch-5.10.46-dovetail1.patch
>>>
>>> make menuconfig
>>> # I did no extra configuration in the kernel configuration and just save
>>> a .config file.
>>> # Actually I've tried to compile the image multiple times with different
>>> configurations, but I got the same error each time.
>>>
>>> make bzImage
>>> # Got error here
>>> ```
>>>
>>> And the error log is:
>>> ```
>>>   LD      .tmp_vmlinux.btf
>>>   BTF     .btf.vmlinux.bin.o
>>>   LD      .tmp_vmlinux.kallsyms1
>>>   KSYMS   .tmp_vmlinux.kallsyms1.S
>>>   AS      .tmp_vmlinux.kallsyms1.S
>>>   LD      .tmp_vmlinux.kallsyms2
>>>   KSYMS   .tmp_vmlinux.kallsyms2.S
>>>   AS      .tmp_vmlinux.kallsyms2.S
>>>   LD      vmlinux
>>>   BTFIDS  vmlinux
>>> FAILED unresolved symbol udp_sock
>>> make: *** [Makefile:1205: vmlinux] Error 255
>>> ```
>>> The purely Linux kernel without Dovetail patch could be compiled
>>> successfully, thus I tried to compare the* .config* file under these two
>>> situations (success and failed) with 'meld' tool.
>>> However, I only watched some modifications about the XEN virtual machine.
>>> I also googled it but cannot figure out any related solutions.
>>>
>>> Could you provide some solutions for me? Thanks for your help!
>>>
>>> Sincerely,
>>> Jiayu.
>>>
>>

-- 
Siemens AG, T RDA IOT
Corporate Competence Center Embedded Linux

Re: 'make bzImage' compile error at x86_64 platform: FAILED unresolved symbol udp_sock

[Jiayu Cao]

Alright, I compiled the kernel at Ubuntu 18.04 with GCC version 7.5.0
successfully. The solution is kind of silly but it does work. Just
wondering that mistake is related to Ubuntu or GCC version...

Jiayu Cao <bitterblossom5486@gmail.com> 于2021年12月21日周二 16:36写道：

> I downloaded linux-dovetail source code from
> https://source.denx.de/Xenomai/linux-dovetail, then I got the same
> problem too. I compiled the kernel image on the ubuntu20 virtual machine.
> So I guess it might be the issue of OS version or VM?
>
> Jiayu Cao <bitterblossom5486@gmail.com> 于2021年12月21日周二 12:02写道：
>
>> Hi Xenomai development group:
>>
>> I am working on Xenomai 3.2.1 and Ubuntu 20.04 OS.
>> I am trying to build a kernel image based on the linux-oem-5.10.0-1044.46
>> kernel, which is a Ubuntu kernel and the mainline base version is *Linux
>> 5.10.46*. The kernel's source code folder path
>> is ~/linux-oem-5.10-5.10.0/.
>> Then I extracted the Dovetail patch to linux-oem-5.10-5.10.0/ folder ,
>> which version is *patch-5.10.46-dovetail1.patch.bz2*. Then I typed the
>> following commands:
>> ```
>> cd linux-oem-5.10-5.10.0/
>>
>> ~/Downloads/xenomai-v3.2.1/scripts/prepare-kernel.sh --arch=x86_64
>> --dovetail=patch-5.10.46-dovetail1.patch
>>
>> make menuconfig
>> # I did no extra configuration in the kernel configuration and just save
>> a .config file.
>> # Actually I've tried to compile the image multiple times with different
>> configurations, but I got the same error each time.
>>
>> make bzImage
>> # Got error here
>> ```
>>
>> And the error log is:
>> ```
>>   LD      .tmp_vmlinux.btf
>>   BTF     .btf.vmlinux.bin.o
>>   LD      .tmp_vmlinux.kallsyms1
>>   KSYMS   .tmp_vmlinux.kallsyms1.S
>>   AS      .tmp_vmlinux.kallsyms1.S
>>   LD      .tmp_vmlinux.kallsyms2
>>   KSYMS   .tmp_vmlinux.kallsyms2.S
>>   AS      .tmp_vmlinux.kallsyms2.S
>>   LD      vmlinux
>>   BTFIDS  vmlinux
>> FAILED unresolved symbol udp_sock
>> make: *** [Makefile:1205: vmlinux] Error 255
>> ```
>> The purely Linux kernel without Dovetail patch could be compiled
>> successfully, thus I tried to compare the* .config* file under these two
>> situations (success and failed) with 'meld' tool.
>> However, I only watched some modifications about the XEN virtual machine.
>> I also googled it but cannot figure out any related solutions.
>>
>> Could you provide some solutions for me? Thanks for your help!
>>
>> Sincerely,
>> Jiayu.
>>
>

Re: 'make bzImage' compile error at x86_64 platform: FAILED unresolved symbol udp_sock

[Jiayu Cao]

I downloaded linux-dovetail source code from
https://source.denx.de/Xenomai/linux-dovetail, then I got the same problem
too. I compiled the kernel image on the ubuntu20 virtual machine. So I
guess it might be the issue of OS version or VM?

Jiayu Cao <bitterblossom5486@gmail.com> 于2021年12月21日周二 12:02写道：

> Hi Xenomai development group:
>
> I am working on Xenomai 3.2.1 and Ubuntu 20.04 OS.
> I am trying to build a kernel image based on the linux-oem-5.10.0-1044.46
> kernel, which is a Ubuntu kernel and the mainline base version is *Linux
> 5.10.46*. The kernel's source code folder path
> is ~/linux-oem-5.10-5.10.0/.
> Then I extracted the Dovetail patch to linux-oem-5.10-5.10.0/ folder ,
> which version is *patch-5.10.46-dovetail1.patch.bz2*. Then I typed the
> following commands:
> ```
> cd linux-oem-5.10-5.10.0/
>
> ~/Downloads/xenomai-v3.2.1/scripts/prepare-kernel.sh --arch=x86_64
> --dovetail=patch-5.10.46-dovetail1.patch
>
> make menuconfig
> # I did no extra configuration in the kernel configuration and just save a
> .config file.
> # Actually I've tried to compile the image multiple times with different
> configurations, but I got the same error each time.
>
> make bzImage
> # Got error here
> ```
>
> And the error log is:
> ```
>   LD      .tmp_vmlinux.btf
>   BTF     .btf.vmlinux.bin.o
>   LD      .tmp_vmlinux.kallsyms1
>   KSYMS   .tmp_vmlinux.kallsyms1.S
>   AS      .tmp_vmlinux.kallsyms1.S
>   LD      .tmp_vmlinux.kallsyms2
>   KSYMS   .tmp_vmlinux.kallsyms2.S
>   AS      .tmp_vmlinux.kallsyms2.S
>   LD      vmlinux
>   BTFIDS  vmlinux
> FAILED unresolved symbol udp_sock
> make: *** [Makefile:1205: vmlinux] Error 255
> ```
> The purely Linux kernel without Dovetail patch could be compiled
> successfully, thus I tried to compare the* .config* file under these two
> situations (success and failed) with 'meld' tool.
> However, I only watched some modifications about the XEN virtual machine.
> I also googled it but cannot figure out any related solutions.
>
> Could you provide some solutions for me? Thanks for your help!
>
> Sincerely,
> Jiayu.
>

'make bzImage' compile error at x86_64 platform: FAILED unresolved symbol udp_sock

[Jiayu Cao]

Hi Xenomai development group:

I am working on Xenomai 3.2.1 and Ubuntu 20.04 OS.
I am trying to build a kernel image based on the linux-oem-5.10.0-1044.46
kernel, which is a Ubuntu kernel and the mainline base version is *Linux
5.10.46*. The kernel's source code folder path is ~/linux-oem-5.10-5.10.0/.
Then I extracted the Dovetail patch to linux-oem-5.10-5.10.0/ folder ,
which version is *patch-5.10.46-dovetail1.patch.bz2*. Then I typed the
following commands:
```
cd linux-oem-5.10-5.10.0/

~/Downloads/xenomai-v3.2.1/scripts/prepare-kernel.sh --arch=x86_64
--dovetail=patch-5.10.46-dovetail1.patch

make menuconfig
# I did no extra configuration in the kernel configuration and just save a
.config file.
# Actually I've tried to compile the image multiple times with different
configurations, but I got the same error each time.

make bzImage
# Got error here
```

And the error log is:
```
  LD      .tmp_vmlinux.btf
  BTF     .btf.vmlinux.bin.o
  LD      .tmp_vmlinux.kallsyms1
  KSYMS   .tmp_vmlinux.kallsyms1.S
  AS      .tmp_vmlinux.kallsyms1.S
  LD      .tmp_vmlinux.kallsyms2
  KSYMS   .tmp_vmlinux.kallsyms2.S
  AS      .tmp_vmlinux.kallsyms2.S
  LD      vmlinux
  BTFIDS  vmlinux
FAILED unresolved symbol udp_sock
make: *** [Makefile:1205: vmlinux] Error 255
```
The purely Linux kernel without Dovetail patch could be compiled
successfully, thus I tried to compare the* .config* file under these two
situations (success and failed) with 'meld' tool.
However, I only watched some modifications about the XEN virtual machine.
I also googled it but cannot figure out any related solutions.

Could you provide some solutions for me? Thanks for your help!

Sincerely,
Jiayu.