Red Hat Bugzilla – Bug 1460482
Exception: Failed to compile BPF module
Last modified: 2017-07-10 12:27:51 EDT
Description of problem: bcc tools appear to require kernel-devel but the package doesn't require it Version-Release number of selected component (if applicable): bcc-0.3.0-2.fc26.x86_64 How reproducible: Always Steps to Reproduce: 1. dnf install bcc 2. sudo -i 3. cd /usr/share/bcc/tools/ 4. ./btrfsslower Actual results: [root@f26h tools]# ./btrfsslower chdir(/lib/modules/4.11.3-300.fc26.x86_64/build): No such file or directory Traceback (most recent call last): File "./btrfsslower", line 322, in b = BPF(text=bpf_text) File "/usr/lib/python3.6/site-packages/bcc/init.py", line 284, in init raise Exception("Failed to compile BPF module %s" % src_file) Exception: Failed to compile BPF module [root@f26h tools]# ls -l /lib/modules/4.11.3-300.fc26.x86_64/build lrwxrwxrwx. 1 root root 39 May 25 13:01 /lib/modules/4.11.3-300.fc26.x86_64/build -> /usr/src/kernels/4.11.3-300.fc26.x86_64 That path is empty. Expected results: Looks like kernel-devel is necessary to run at least some of these tools, so it probably should get dragged in as some kind of dependency when installing bcc. Additional info:
Upstream bug and comment. https://github.com/iovisor/bcc/issues/1221#issuecomment-312791815
Chris, if you install kernel-devel, do the tools work as expected on Fedora 26?
No I get a different problem, a crash, which is in the upstream bug.
(In reply to Chris Murphy from comment #7) > No I get a different problem, a crash, which is in the upstream bug. Yeah, it's the same for me. It only happens on f26. On f25 it works as expected.