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[Po-Hsu Lin <po-hsu.lin@xxxxxxxxxxxxx>]

** Changed in: linux (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1605405

Title:
  Backport cxlflash shutdown patch to Xenial SRU

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Yakkety:
  Won't Fix

Bug description:
  == Comment: #0 - UMA KRISHNAN - 2016-07-21 17:39:18 ==
  ---Problem Description---
  A patch is now in the process of upstream for the cxlflash driver. Can this be pulled into Xenial SRU ?

  I have attached the patch with this bug. The link to the mail sent to community is,
  http://marc.info/?l=linux-scsi&m=146913386924240&w=2

  cxlflash: Verify problem state area is mapped before notifying shutdown
   
  ---uname output---
  4.4.0-31.50
   
  ---Steps to Reproduce---
   Execute cxlflash FVT tests
   
  Stack trace output:
       [c000000f1da03b60] c0000000005eccfc pci_device_shutdown+0x6c/0x100
      [c000000f1da03ba0] c0000000006d67d4 device_shutdown+0x1b4/0x2c0
      [c000000f1da03c40] c0000000000ea30c kernel_restart_prepare+0x5c/0x80
      [c000000f1da03c70] c0000000000ea48c kernel_restart+0x2c/0xc0
      [c000000f1da03ce0] c0000000000ea970 SyS_reboot+0x1c0/0x2d0
      [c000000f1da03e30] c000000000009204 system_call+0x38/0xb4
   
  Oops output:
   cpu 0xa: Vector: 300 (Data Access) at [c000000f1da03840]
      pc: d00000000aaf0e64: notify_shutdown+0x84/0x220 [cxlflash]
      lr: c0000000005eccfc: pci_device_shutdown+0x6c/0x100
      sp: c000000f1da03ac0
     msr: 9000000000009033
     dar: 2012328
   dsisr: 40000000
    current = 0xc000000f1d940000
    paca    = 0xc00000000fb45f00   softe: 0        irq_happened: 0x01
      pid   = 1, comm = systemd-shutdow
  enter ? for help
  [c000000f1da03b60] c0000000005eccfc pci_device_shutdown+0x6c/0x100
  [c000000f1da03ba0] c0000000006d67d4 device_shutdown+0x1b4/0x2c0
  [c000000f1da03c40] c0000000000ea30c kernel_restart_prepare+0x5c/0x80
  [c000000f1da03c70] c0000000000ea48c kernel_restart+0x2c/0xc0
  [c000000f1da03ce0] c0000000000ea970 SyS_reboot+0x1c0/0x2d0
  [c000000f1da03e30] c000000000009204 system_call+0x38/0xb4
  --- Exception: c01 (System Call) at 00003fffa4129bec
  SP (3fffce171820) is in userspace

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