linux-headers-4.18.0-1004-azure contains links to non-existing targets

This might be the cause of:
bug 1803333
bug 1803328
and
bug 1803330

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1803335

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

It does not look different in 4.18.0-1005

$ ls /usr/src/linux-azure-edge-headers-4.18.0-1005
ls: cannot access '/usr/src/linux-azure-edge-headers-4.18.0-1005': No such file or directory

$ ll /usr/src/linux-headers-4.18.0-1005-azure
total 1240
drwxr-xr-x 8 root root 4096 Nov 26 20:06 ./
drwxr-xr-x 10 root root 4096 Nov 26 20:06 ../
-rw-r--r-- 1 root root 136487 Nov 16 06:08 .config
-rw-r--r-- 1 root root 130326 Nov 16 06:08 .config.old
-rw-r--r-- 1 root root 1229 Nov 16 06:08 .missing-syscalls.d
drwxr-xr-x 2 root root 4096 Nov 16 06:08 .tmp_versions/
lrwxrwxrwx 1 root root 48 Nov 16 06:08 Documentation -> ../linux-azure-headers-4.18.0-1005/Documentation/
lrwxrwxrwx 1 root root 41 Nov 16 06:08 Kbuild -> ../linux-azure-headers-4.18.0-1005/Kbuild
lrwxrwxrwx 1 root root 42 Nov 16 06:08 Kconfig -> ../linux-azure-headers-4.18.0-1005/Kconfig
lrwxrwxrwx 1 root root 43 Nov 16 06:08 Makefile -> ../linux-azure-headers-4.18.0-1005/Makefile
-rw-r--r-- 1 root root 953018 Nov 16 06:08 Module.symvers
drwxr-xr-x 3 root root 4096 Nov 26 20:06 arch/
lrwxrwxrwx 1 root root 40 Nov 16 06:08 block -> ../linux-azure-headers-4.18.0-1005/block/
lrwxrwxrwx 1 root root 40 Nov 16 06:08 certs -> ../linux-azure-headers-4.18.0-1005/certs/
lrwxrwxrwx 1 root root 41 Nov 16 06:08 crypto -> ../linux-azure-headers-4.18.0-1005/crypto/
lrwxrwxrwx 1 root root 42 Nov 16 06:08 drivers -> ../linux-azure-headers-4.18.0-1005/drivers/
lrwxrwxrwx 1 root root 43 Nov 16 06:08 firmware -> ../linux-azure-headers-4.18.0-1005/firmware/
lrwxrwxrwx 1 root root 37 Nov 16 06:08 fs -> ../linux-azure-headers-4.18.0-1005/fs/
drwxr-xr-x 4 root root 4096 Nov 26 20:06 include/
lrwxrwxrwx 1 root root 39 Nov 16 06:08 init -> ../linux-azure-headers-4.18.0-1005/init/
lrwxrwxrwx 1 root root 38 Nov 16 06:08 ipc -> ../linux-azure-headers-4.18.0-1005/ipc/
drwxr-xr-x 2 root root 4096 Nov 26 20:06 kernel/
lrwxrwxrwx 1 root root 38 Nov 16 06:08 lib -> ../linux-azure-headers-4.18.0-1005/lib/
lrwxrwxrwx 1 root root 37 Nov 16 06:08 mm -> ../linux-azure-headers-4.18.0-1005/mm/
lrwxrwxrwx 1 root root 38 Nov 16 06:08 net -> ../linux-azure-headers-4.18.0-1005/net/
lrwxrwxrwx 1 root root 42 Nov 16 06:08 samples -> ../linux-azure-headers-4.18.0-1005/samples/
drwxr-xr-x 6 root root 12288 Nov 26 20:06 scripts/
lrwxrwxrwx 1 root root 43 Nov 16 06:08 security -> ../linux-azure-headers-4.18.0-1005/security/
lrwxrwxrwx 1 root root 40 Nov 16 06:08 sound -> ../linux-azure-headers-4.18.0-1005/sound/
lrwxrwxrwx 1 root root 38 Nov 16 06:08 spl -> ../linux-azure-headers-4.18.0-1005/spl/
drwxr-xr-x 3 root root 4096 Nov 26 20:06 tools/
lrwxrwxrwx 1 root root 41 Nov 16 06:08 ubuntu -> ../linux-azure-headers-4.18.0-1005/ubuntu/
lrwxrwxrwx 1 root root 38 Nov 16 06:08 usr -> ../linux-azure-headers-4.18.0-1005/usr/
lrwxrwxrwx 1 root root 39 Nov 16 06:08 virt -> ../linux-azure-headers-4.18.0-1005/virt/
lrwxrwxrwx 1 root root 38 Nov 16 06:08 zfs -> ../linux-azure-headers-4.18.0-1005/zfs/

$ uname -r
4.18.0-1005-azure

$ dpkg -l | grep header
ii libpcap0.8-dev:amd64 1.8.1-6ubuntu1 ...

Hello Joshua,

The problem here is that the softlink in linux-headers-4.18.0-1004-azure is pointing to a non-existing dir

lrwxrwxrwx 1 root root 53 Oct 25 13:59 Documentation -> ../linux-azure-edge-headers-4.18.0-1004/Documentation

$ ls /usr/src/linux-azure-edge-headers-4.18.0-1004
ls: cannot access '/usr/src/linux-azure-edge-headers-4.18.0-1004': No such file or directory

For the current kernel in proposed, 4.18.0-1006 Azure for Bionic, it's pointing to an existing directory:
lrwxrwxrwx 1 root root 48 Nov 26 22:59 Documentation -> ../linux-azure-headers-4.18.0-1006/Documentation/

$ ls /usr/src/linux-azure-headers-4.18.0-1006
Documentation Kconfig arch certs drivers fs init kernel mm samples security spl ubuntu virt
Kbuild Makefile block crypto firmware include ipc lib net scripts sound tools usr zfs

So we can call this fixed.
Thanks

This bug was fixed in the package linux-azure-edge - 4.18.0-1006.6~16.04.2

---------------
linux-azure-edge (4.18.0-1006.6~16.04.2) xenial; urgency=medium

  * linux-azure-edge: 4.18.0-1006.6~16.04.2 -proposed tracker (LP: #1805865)

  [ Ubuntu: 4.18.0-1006.6 ]

  * linux-azure: 4.18.0-1006.6 -proposed tracker (LP: #1805244)
  * Accelerated networking (SR-IOV VF) broken in 18.10 daily (LP: #1794477)
    - [Packaging] Move pci-hyperv and autofs4 back to linux-modules

 -- Marcelo Henrique Cerri <email address hidden> Fri, 30 Nov 2018 14:57:53 -0200

This bug is awaiting verification that the 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-bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed-bionic'.

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!

Works well with 4.18.0-1006.6~16.04.2
Kernel security test can be built (bug 1803333).

 test_072_strict_devmem (__main__.KernelSecurityTest)
 /dev/mem unreadable for kernel memory ... (using 0x198a05a28) (exit code 0) ok