** Changed in: linux-azure-4.15 (Ubuntu Bionic)
       Status: In Progress => Fix Committed

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  Azure diagnostic/serviceability improvement

Status in linux-azure package in Ubuntu:
Status in linux-azure-4.15 package in Ubuntu:
Status in linux-azure source package in Bionic:
Status in linux-azure-4.15 source package in Bionic:
  Fix Committed

Bug description:
  Microsoft would like to request the inclusion of commits in all
  releases supported on Azure.  These commits will enable reporting 4
  Kbytes of dmesg information to Hyper-V when Linux takes a panic.

  Microsoft would like to get all releases reporting this information,
  so that we can automatically get a rich picture of Linux panics in
  Azure.  This will limit the need get serial console logs or other
  steps to manually acquire debug info.

  We would like to request the folloiwng commits to enable the
  diagnostic/serviceability improvement:

  f3a99e761efa ("x86/Hyper-V: Report crash data in die() when panic_on_oops is 
  040026df7088 ("x86/Hyper-V: Report crash register data when 
sysctl_record_panic_msg is not set")
  a11589563e96 ("x86/Hyper-V: Report crash register data or kmsg before running 
crash kernel")
  73f26e526f19 ("x86/Hyper-V: Trigger crash enlightenment only once during 
system crash.")
  7f11a2cc10a4 ("x86/Hyper-V: Free hv_panic_page when fail to register kmsg 
  74347a99e73a ("x86/Hyper-V: Unload vmbus channel in hv panic callback")
  8afc06dd75c0 ("Drivers: hv: vmbus: Fix the issue with freeing up 
  ddcaf3ca4c3c ("Drivers: hv: vmus: Fix the check for return value from kmsg 
get dump buffer")
  81b18bce48af ("Drivers: HV: Send one page worth of kmsg dump over Hyper-V 
during panic")
  7ed4325a44ea ("Drivers: hv: vmbus: Make panic reporting to be more useful")

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