[Bug 2097317] Re: bpftrace: error while loading shared libraries: libLLVM-18.so.18.1: cannot open shared object file: No such file or directory

[Chris Halse Rogers]

Hello Andreas, or anyone else affected,

Accepted bpftrace into noble-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/bpftrace/0.20.2-1ubuntu4.3 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
noble to verification-done-noble. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-noble. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: bpftrace (Ubuntu Noble)
       Status: New => Fix Committed

** Tags added: verification-needed verification-needed-noble

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https://bugs.launchpad.net/bugs/2097317

Title:
  bpftrace: error while loading shared libraries: libLLVM-18.so.18.1:
  cannot open shared object file: No such file or directory

Status in bpftrace package in Ubuntu:
  Confirmed
Status in bpftrace source package in Noble:
  Fix Committed

Bug description:
  [impact]
  bpftrace 0.20.2-1ubuntu4.2 is broken with the version of llvm-toolchain-18 in noble-updates:

  Regression from https://bugs.launchpad.net/ubuntu/+source/bpftrace/+bug/2081848
  root at nsnx2:~# bpftrace
  bpftrace: error while loading shared libraries: libLLVM-18.so.18.1: cannot open shared object file: No such file or directory

  [test plan]
  bpftrace runs tests during build which verifies _something_ but also we should install bpftrace on a system that has no other packages from proposed run a simple command such as "sudo bpftrace -e 'kprobe:do_nanosleep { printf("%d sleeping\n", pid); }'".

  [regression potential]
  It is still possible that rebuilding bpftrace is not safe because of some other change in the archive since release. The tests should catch most of these, but if there is some other regression caused by building against a version in proposed and running against a version in release or updates it might not be caught (and sadly neither would the autopkgtests, they just build and run the tests). It's not clear what to do about this (other than improve the autopkgtests).

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