Commit 7fa32e5ec28b was mentioned in the descriptions.  However, that
commit has been in mainlien since 4.15-rc3, so it's always been in
18.04.

We may want to split the two issues in to two separate bugs, so they
each get addressed.

Do both issues still happen with the latest Bionic kernel?  Per comment
#6, it sounds liek the second issues still happens.  How about the first
issue, where the KVP daemon crashes after approximatively 2 minutes of
uptime?

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https://bugs.launchpad.net/bugs/1766857

Title:
  [Hyper-V] KVP daemon fails to start

Status in linux package in Ubuntu:
  In Progress
Status in linux-azure package in Ubuntu:
  Invalid
Status in linux source package in Bionic:
  In Progress
Status in linux-azure source package in Bionic:
  Invalid

Bug description:
  While testing Bionic daily build with kernel 4.15.0-20-generic we saw
  that there are 2 issues with the KVP daemon:

  1. KVP daemon crashes after approximatively 2 minutes of uptime and it enters 
in a failed state. The daemon can be manually started and it enters back in 
active (running) state.
  The error messages from /var/log/syslog after the daemon enters the failed 
state are the following:

  Apr 25 04:28:46 bionicDaily KVP: read failed; error:9 Bad file descriptor
  Apr 25 04:28:46 bionicDaily systemd[1]: hv-kvp-daemon.service: Main process 
exited, code=exited, status=1/FAILURE
  Apr 25 04:28:46 bionicDaily systemd[1]: hv-kvp-daemon.service: Failed with 
result 'exit-code'.
  Apr 25 04:28:59 bionicDaily systemd[1]: Started Hyper-V KVP Protocol Daemon.

  Note: There was a simmilar issue discussed on this thread
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1664663, but the
  fixing commit seems to be inclued in this Bionic build.

  2. After the KVP daemon is being started the following messages
  appear:

  Apr 25 04:45:25 bionicDaily hv_kvp_daemon[1895]: sh: 1: 
/usr/libexec/hypervkvpd/hv_get_dns_info: not found
  Apr 25 04:45:25 bionicDaily hv_kvp_daemon[1895]: sh: 1: 
/usr/libexec/hypervkvpd/hv_get_dhcp_info: not found

  The above binaries are present on the system, but the their actual
  path is /usr/sbin/hv_get_dns_info and /usr/sbin/hv_get_dhcp_info.
  Either the hv_get_dhcp_info and hv_get_dns_info binaries should be
  placed in the location where the daemon is looking for
  (/usr/libexec/hypervkvpd/), or the daemon should be set to search for
  the binaries in the /usr/sbin directory.

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