Try to disable CONFIG_DEBUG_INFO_BTF

[UnnameBao]

When I try to build camflow at fedora, I got this error. I tried to google it but I still confused how to disable CONFIG_DEBUG_INFO_BTF.

[UnnameBao]

MODINFO modules.builtin.modinfo BTF .tmp_vmlinux.btf: pahole (pahole) is not available Failed to generate BTF for vmlinux Try to disable CONFIG_DEBUG_INFO_BTF make[2]: [Makefile:1077：vmlinux] 错误 1 make[2]: 离开目录“/home/b0ring/camflow-install/build/camflow-patches/v0.6.4/build/linux-stable” make[1]: [Makefile:51：compile] 错误 2 make[1]: 离开目录“/home/b0ring/camflow-install/build/camflow-patches/v0.6.4” make: *** [Makefile:310：compile_lsm] 错误 2

[UnnameBao]

I slove this problem by :

sudo dnf install dwarves

But now I get a new error:

objcopy: --change-section-vma .BTF=0x0000000000000000 never used objcopy: --change-section-lma .BTF=0x0000000000000000 never used objcopy: error: the input file '.btf.vmlinux.bin' is empty Failed to generate BTF for vmlinux Try to disable CONFIG_DEBUG_INFO_BTF

[tfjmp]

I am working on a new release. This should get fixed at some point within the next 24h :). The issue relates to changing dependencies.

[UnnameBao]

I am working on a new release. This should get fixed at some point within the next 24h :). The issue relates to changing dependencies.

Thanks!

[tfjmp]

Everything is now building in my test environment.

Please, do let me know if you are still facing some issues.

Finally, thanks for reporting :).

[UnnameBao]

It's pleasure to know you build a new version to handle this issue. But I still facing some problem here:

1. I use Fedora 31 to build this new version camflow and everything seems fine. But when I got reboot, I notice there don't have 5.5.11 version kernel. Then I run shell:

   [b0ring@localhost ~]$ rpm -qa kernel kernel-5.3.7-301.fc31.x86_64 [b0ring@localhost ~]$ rpm -qa|grep kernel kernel-headers-5.3.6-300.fc31.x86_64 kernel-devel-5.5.10-200.fc31.x86_64 kernel-modules-extra-5.3.7-301.fc31.x86_64 kernel-modules-5.3.7-301.fc31.x86_64 kernel-core-5.3.7-301.fc31.x86_64 abrt-addon-kerneloops-2.12.2-1.fc31.x86_64 kernel-5.3.7-301.fc31.x86_64 libreport-plugin-kerneloops-2.10.1-2.fc31.x86_64

I am not sure if there is missing some package to build whole kernel.

2. I use Fedora 29 to install the builded version of camflow and everything seems ok. I can run camflow and capture provance but when I build CamQuery, there happened thousands of error.

I am still confused how to handle one of these two problem.

[UnnameBao]

Is my gcc version was not right?

➜ libcamquery git:(master) gcc --version gcc (GCC) 8.2.1 20180801 (Red Hat 8.2.1-2) Copyright © 2018 Free Software Foundation, Inc.

[tfjmp]

1) did the option show up in the grub? (http://camflow.org/#reboot) Sometimes when building from source it does not get selected by default (if you install via the package manager it tends to not be an issue).

2) It seems to work on my end.

I used the default exemplar query available here: https://github.com/CamFlow/libcamquery

What query are you trying to build?

3) I would tend to believe that as long as the gcc version is not too old, it is ok.

[UnnameBao]

I tried both build way and package install way but I still can't select new kernel:

I tried run shell

grub2-mkconfig -o /boot/grub2/grub.cfg

to update grub but still not work.

[tfjmp]

This is very strange. The kernel should show up in there (even if not selected by default). If it has been installed it should show up there.

You can check if the kernel is there as follow:

su
cd /boot
ls

I think it is not installing/building for some reason. I never faced this problem before. Did you check if you are getting error messages about lack of space or something similar?

If you are using VMs, we provide vagrant files that should setup a working environment for you (basic-fedora or rpm are good choices).

[UnnameBao]

I work successfully using Vagrantfile. Thanks for your help.

[tfjmp]

No problem. I am closing the issue, please, do reopen if you have further problems.