[Issue]: RCCL DMABUF breaks when /boot isn't readable

[arsdragonfly]

Problem Description

/boot might not be readable (e.g. on Azure Linux 3), hence this can break
A more robust approach of reading kconfig should be used

Operating System

Azure Linux 3

CPU

N/A

GPU

MI300X

ROCm Version

6.2

ROCm Component

rccl

Steps to Reproduce

run rccl-tests with NCCL_DMABUF_ENABLE=1

(Optional for Linux users) Output of /opt/rocm/bin/rocminfo --support

No response

Additional Information

No response

[ppanchad-amd]

Hi @arsdragonfly. Internal ticket has been created to investigate this issue. Thanks!

[lucbruni-amd]

Hi @arsdragonfly, just wanted to let you know I was able to consistently reproduce your issue and I'm working with the team to get a fix in. Thanks for your patience.

[mberenjk]

Hi @arsdragonfly
Could you please test with this PR and see if the issue is resolved?
#1825