FAILED: load BTF from vmlinux: Invalid argument

[rangshaonan]

When i build core-jammy   of intel ECI following the https://eci.intel.com/docs/3.0.2/getstarted/building.html,  it will build fail, i found the fail log :

GEN modules.builtin
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: load BTF from vmlinux: Invalid argument
make[3]: *** [/<<PKGBUILDDIR>>/Makefile:1186: vmlinux] Error 255
make[3]: *** Deleting file 'vmlinux'
make[3]: Leaving directory '/<<PKGBUILDDIR>>/build-full'
make[2]: *** [Makefile:219: __sub-make] Error 2
make[2]: Leaving directory '/<<PKGBUILDDIR>>'
+ exit 2
make[1]: *** [debian/rules:42: override_dh_auto_build] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:28: build] Error 2
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2

How to resove this issue? 

[JesusE_Intel]

Hi rangshaonan,

Could you please share the specifications (CPU, Storage, Memory) for the system you are using to build core-jammy image? Please note that this task requires a lot of resources, and the system should meet the system requirements.

https://eci.intel.com/docs/3.0.2/getstarted/requirements.html#linux-build-system-optional

I am in the process of building core-jammy image from my side, I will let you know if I encounter any issues.

Regards,

Jesus

[rangshaonan]

Hi, Jesus 

Sorry so late replaying, because the chrome browse couldn't replay this post.

I've found that this is not an issue with the computer's specifications.  Please see this

https://devkernel.io/posts/pahole-error/ , this post has resolved my problem.

But I have some other questions again.

1、when I disabled the CONFIG_DEBUG_INFO_BTF configuration option, the build will report an error:

42762 /<<PKGBUILDDIR>>/samples/bpf/bpftool//bootstrap/bpftool btf dump file /<<PKGBUILDDIR>>/build-full/vmlinux format c > /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h
42763 
42764 /<<PKGBUILDDIR>>/samples/bpf/bpftool//bootstrap/bpftool btf dump file /<<PKGBUILDDIR>>/build-full/vmlinux format c > /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h
42765 Error: failed to load BTF from /<<PKGBUILDDIR>>/build-full/vmlinux: No such file or directory
42766 
42767 Error: failed to load BTF from /<<PKGBUILDDIR>>/build-full/vmlinux: No such file or directory
42768 make[7]: *** [Makefile:157: /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h] Error 2
42769 
42770 make[7]: *** [Makefile:157: /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h] Error 2
42771 make[6]: *** [/<<PKGBUILDDIR>>/samples/bpf/Makefile:293: /<<PKGBUILDDIR>>/samples/bpf/bpftool/bpftool] Error 2
42772 
42773 make[6]: *** [/<<PKGBUILDDIR>>/samples/bpf/Makefile:293: /<<PKGBUILDDIR>>/samples/bpf/bpftool/bpftool] Error 2
42774 make[5]: *** [/<<PKGBUILDDIR>>/Makefile:1871: /<<PKGBUILDDIR>>/samples/bpf] Error 2
42775 
42776 make[5]: *** [/<<PKGBUILDDIR>>/Makefile:1871: /<<PKGBUILDDIR>>/samples/bpf] Error 2

   The problem is that I don't know which script calls this "bpftool btf dump file /<<PKGBUILDDIR>>/build-full/vmlinux format c > /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h" and why call this.

2、There is no "pahole" in the Docker container jammy-kas-isar:3.0.2. But when compiling the image, the link-vmlinux.sh can found the "pahole" with path "/usr/bin/pahole" which version is v1.25, how did this program come about, and how can its version be controlled?

3、By specifying this option --skip_encoding_btf_enum64 , the image will be created. But when it is running, the kernel reports an error:

[ 4.421228] BPF: [112814] ENUM netdev_tx
[ 4.421944] BPF: size=4 vlen=3
[ 4.422640] BPF:
[ 4.423317] BPF: Invalid btf_info kind_flag
[ 4.424014] BPF:

[ 4.424689] failed to validate module [nfnetlink] BTF: -22

[rangshaonan]

test

[rangshaonan]

Hi, Jesus 

Sorry so late replaying, because the chrome browse couldn't replay this post.

I've found that this is not an issue with the computer's specifications.  Please see this

https://devkernel.io/posts/pahole-error/ , this post has resolved my problem.

But I have some other questions again.

1、when I disabled the CONFIG_DEBUG_INFO_BTF configuration option, the build will report an error:

42762 /<<PKGBUILDDIR>>/samples/bpf/bpftool//bootstrap/bpftool btf dump file /<<PKGBUILDDIR>>/build-full/vmlinux format c > /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h
42763 
42764 /<<PKGBUILDDIR>>/samples/bpf/bpftool//bootstrap/bpftool btf dump file /<<PKGBUILDDIR>>/build-full/vmlinux format c > /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h
42765 Error: failed to load BTF from /<<PKGBUILDDIR>>/build-full/vmlinux: No such file or directory
42766 
42767 Error: failed to load BTF from /<<PKGBUILDDIR>>/build-full/vmlinux: No such file or directory
42768 make[7]: *** [Makefile:157: /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h] Error 2
42769 
42770 make[7]: *** [Makefile:157: /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h] Error 2
42771 make[6]: *** [/<<PKGBUILDDIR>>/samples/bpf/Makefile:293: /<<PKGBUILDDIR>>/samples/bpf/bpftool/bpftool] Error 2
42772 
42773 make[6]: *** [/<<PKGBUILDDIR>>/samples/bpf/Makefile:293: /<<PKGBUILDDIR>>/samples/bpf/bpftool/bpftool] Error 2
42774 make[5]: *** [/<<PKGBUILDDIR>>/Makefile:1871: /<<PKGBUILDDIR>>/samples/bpf] Error 2
42775 
42776 make[5]: *** [/<<PKGBUILDDIR>>/Makefile:1871: /<<PKGBUILDDIR>>/samples/bpf] Error 2

   The problem is that I don't know which script calls this "bpftool btf dump file /<<PKGBUILDDIR>>/build-full/vmlinux format c > /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h" and why call this.

2、There is no "pahole" in the Docker container jammy-kas-isar:3.0.2. But when compiling the image, the link-vmlinux.sh can found the "pahole" with path "/usr/bin/pahole" which version is v1.25, how did this program come about, and how can its version be controlled?

3、By specifying this option --skip_encoding_btf_enum64 , the image will be created. But when it is running, the kernel reports an error:

[ 4.421228] BPF: [112814] ENUM netdev_tx
[ 4.421944] BPF: size=4 vlen=3
[ 4.422640] BPF:
[ 4.423317] BPF: Invalid btf_info kind_flag
[ 4.424014] BPF:

[ 4.424689] failed to validate module [nfnetlink] BTF: -22

[rangshaonan]

Hi, Jesus 

Sorry so late replaying, because the chrome browse couldn't replay this post.

I've found that this is not an issue with the computer's specifications.  Please see this

https://devkernel.io/posts/pahole-error/ , this post has resolved my problem.

But I have some other questions again.

1、when I disabled the CONFIG_DEBUG_INFO_BTF configuration option, the build will report an error:

42762 /<<PKGBUILDDIR>>/samples/bpf/bpftool//bootstrap/bpftool btf dump file /<<PKGBUILDDIR>>/build-full/vmlinux format c > /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h

42763 42764 /<<PKGBUILDDIR>>/samples/bpf/bpftool//bootstrap/bpftool btf dump file /<<PKGBUILDDIR>>/build-full/vmlinux format c > /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h

42765 Error: failed to load BTF from /<<PKGBUILDDIR>>/build-full/vmlinux: No such file or directory

42766 42767 Error: failed to load BTF from /<<PKGBUILDDIR>>/build-full/vmlinux: No such file or directory

42768 make[7]: *** [Makefile:157: /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h] Error 2

42769 42770 make[7]: *** [Makefile:157: /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h] Error 2

42771 make[6]: *** [/<<PKGBUILDDIR>>/samples/bpf/Makefile:293: /<<PKGBUILDDIR>>/samples/bpf/bpftool/bpftool] Error 2

42772 42773 make[6]: *** [/<<PKGBUILDDIR>>/samples/bpf/Makefile:293: /<<PKGBUILDDIR>>/samples/bpf/bpftool/bpftool] Error 2 42774 make[5]: *** [/<<PKGBUILDDIR>>/Makefile:1871: /<<PKGBUILDDIR>>/samples/bpf] Error 2

42775 42776 make[5]: *** [/<<PKGBUILDDIR>>/Makefile:1871: /<<PKGBUILDDIR>>/samples/bpf] Error 2

   The problem is that I don't know which script calls this "bpftool btf dump file /<<PKGBUILDDIR>>/build-full/vmlinux format c > /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h" and why call this.

2、There is no "pahole" in the Docker container jammy-kas-isar:3.0.2. But when compiling the image, the link-vmlinux.sh can found the "pahole" with path "/usr/bin/pahole" which version is v1.25, how did this program come about, and how can its version be controlled?

3、By specifying this option --skip_encoding_btf_enum64 , the image will be created. But when it is running, the kernel reports an error:

[ 4.421228] BPF: [112814] ENUM netdev_tx

[ 4.421944] BPF: size=4 vlen=3

[ 4.422640] BPF:

[ 4.423317] BPF: Invalid btf_info kind_flag

[ 4.424014] BPF:

[ 4.424689] failed to validate module [nfnetlink] BTF: -22

[rangshaonan]

[rangshaonan]

Hi, Jesus
Please read the content on the image.  !_!

Thanks

[rangshaonan]

Hi, Jesus
Sorry so late replying, because chrome browser couldn't replay this post.

I've found  this is not an issue with the computer's specifications. Please see 

https://devkernel.io/posts/pahole-error/ , This post resolved my problem.

But I have some other questions again:

1、When I disable the CONFIG_DEBUG_INFO_BTF configuration option, the kernel will output the following error:

42762 /<<PKGBUILDDIR>>/samples/bpf/bpftool//bootstrap/bpftool btf dump file /<<PKGBUILDDIR>>/build-full/vmlinux format c > /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h
42763 
42764 /<<PKGBUILDDIR>>/samples/bpf/bpftool//bootstrap/bpftool btf dump file /<<PKGBUILDDIR>>/build-full/vmlinux format c > /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h
42765 Error: failed to load BTF from /<<PKGBUILDDIR>>/build-full/vmlinux: No such file or directory
42766 
42767 Error: failed to load BTF from /<<PKGBUILDDIR>>/build-full/vmlinux: No such file or directory
42768 make[7]: *** [Makefile:157: /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h] Error 2
42769 
42770 make[7]: *** [Makefile:157: /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h] Error 2
42771 make[6]: *** [/<<PKGBUILDDIR>>/samples/bpf/Makefile:293: /<<PKGBUILDDIR>>/samples/bpf/bpftool/bpftool] Error 2
42772 
42773 make[6]: *** [/<<PKGBUILDDIR>>/samples/bpf/Makefile:293: /<<PKGBUILDDIR>>/samples/bpf/bpftool/bpftool] Error 2
42774 make[5]: *** [/<<PKGBUILDDIR>>/Makefile:1871: /<<PKGBUILDDIR>>/samples/bpf] Error 2
42775 
42776 make[5]: *** [/<<PKGBUILDDIR>>/Makefile:1871: /<<PKGBUILDDIR>>/samples/bpf] Error 2

    The problem is that I don't know which script calls this "bpftool btf dump file /<<PKGBUILDDIR>>/build-full/vmlinux format c > /<<PKGBUILDDIR>>/samples/bpf/bpftool/vmlinux.h"  and why call this.

2、There is no "pahole" in the Docker container, but when building core-jammy image , the link-vmlinux.sh can found "pahole" with path "/usr/bin/pahole" which version is v1.25,  how did this program come about, and how can its version be controlled?

3、By specifying this option --skip_encoding_btf_enum64， the core-jammy image will be created，buf when it is running, the kernel reports an error： 

[JesusE_Intel]

Hi rangshaonan,

Let me check with the development team on these issues you are encountering. We will respond to you shortly.

Regards,

Jesus

[Lay · Accepted solution]

Hi,

The issue can be solve with below:

Build core-jammy image manually following these steps:

----------------------
# cd /home/user/eci3/230912/edge_controls_industrial/Edge_Controls_for_Industrial_3.0.2/Edge_Controls_for_Industrial/release-eci_3.0.2/Edge-Controls-for-Industrial/eci-release
# export  KAS_BUILD_DIR=/home/user/eci3/230912/edge_controls_industrial/Edge_Controls_for_Industrial_3.0.2/Edge_Controls_for_Industrial/release-eci_3.0.2/Edge-Controls-for-Industrial/eci-release/build/eci-core-jammy
# [optional] $ sudo KAS_CONTAINER_IMAGE=jammy-kas-isar:3.0.2 ./kas-container --git-credential-store ${HOME}/.git-credentials clean

# vim build/eci-core-jammy/tmp/work/eci-jammy-amd64/linux-intel-rt/5.15.49-rt47-5/git/scripts/link-vmlinux.sh +233

The patch is https://github.com/intel/linux-intel-lts/commit/b775fbf532dc01ae53a6fc56168fd30cb4b0c658. Please add the lines in above file.

----------------------
if [ "${pahole_ver}" -ge "124" ]; then
         extra_paholeopt="${extra_paholeopt} --skip_encoding_btf_enum64"
fi

# KAS_CONTAINER_IMAGE=jammy-kas-isar:3.0.2 ./kas-container --git-credential-store ${HOME}/.git-credentials build targets/kas/eci-core-jammy.yml

[JesusE_Intel]

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