This bug is awaiting verification that the linux-azure-
fips/6.8.0-1042.48+fips1 kernel in -proposed solves the problem. Please
test the kernel and update this bug with the results. If the problem is
solved, change the tag 'verification-needed-noble-linux-azure-fips' to
'verification-done-noble-linux-azure-fips'. If the problem still exists,
change the tag 'verification-needed-noble-linux-azure-fips' to
'verification-failed-noble-linux-azure-fips'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-noble-linux-azure-fips-v2 
verification-needed-noble-linux-azure-fips

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/2104911

Title:
  sources list generation using dwarfdump takes up to 0.5hr in build
  process

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Focal:
  Fix Committed
Status in linux source package in Jammy:
  Fix Released
Status in linux source package in Noble:
  Fix Released
Status in linux source package in Oracular:
  Won't Fix
Status in linux source package in Plucky:
  Fix Released
Status in linux source package in Questing:
  Fix Released

Bug description:
  [ Impact ]

  In debian/rules.d/2-binary-arch.mk, stamp-build-% targets, we have:
  ```
  # Collect the list of kernel source files used for this build. Need to do 
this early
  # before modules are stripped. Fail if the resulting file is empty.
  find $(build_dir) \( -name vmlinux -o -name \*.ko \) -exec dwarfdump -i {} \; 
| \
          grep -E 'DW_AT_(call|decl)_file' | sed -n 's|.*\s/|/|p' | sort -u > \
          $(build_dir)/sources.list
  test -s $(build_dir)/sources.list
  ```

  The process is single threaded and may takes up to half an hour to complete:
  ```
  $ time ...

  real 28m15.167s
  user 54m32.917s
  sys 4m32.531s
  ```

  [ Fix ]

  This takes way too long. Parallelization introduces new/different
  issues. Remove the logic to collect the list of kernel source files
  during the build. We have all the data in the debug packages and can
  extract it after the build.

  This reverts the changes for bug 2086606.

  [ Test Plan ]

  Inspect the build logs and the content of the linux-buildinfo packages
  to verify the data is no longer collected.

  [ Where Problems Could Occur ]

  Potential build failures.

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