Jetson 35.1 Linux build will fail if CONFIG_DEBUG_INFO_BTF=y

Graphics / Linux Linux
1

I can build the kernel v5.10.104 which came along with jetson 35.1 development kit with the tegra default kernel config. However, if I customized the default config by adding CONFIG_DEBUG_INFO_BTF=y, the build would end up this error :

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 netlink_sock

I did some initial analysis. if I enabled this same config for a upstream v5.10.104, the build can complete successfully. Further more, if I removed all the Nvidia patches from the v5.10.104 kernel which is delivered with Jetson 35.1, then the build could succeed as well.

So I believe this error is caused by some of these Nvidia patches which patched the kernel v5.10.104.

Hope Nvidia will investigate and fix this problem.

2

This forum is about the x86 linux driver, I guess your post should belong in one about Jetson: https://forums.developer.nvidia.com/c/agx-autonomous-machines/jetson-embedded-systems/70