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[Launchpad Bug Tracker <1374438@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.16.0-20.27

---------------
linux (3.16.0-20.27) utopic; urgency=low

  [ Tim Gardner ]

  * [Config] CONFIG_CXL=m
  * Release Tracking Bug
    - LP: #1376354

  [ Andi Kleen ]

  * SAUCE: perf tools: Fix perf record as non root with kptr_restrict == 1
    - LP: #1375441

  [ Chris J Arges ]

  * SAUCE: Revert "sd: don't use scsi_setup_blk_pc_cmnd for flush requests"
    - LP: #1375452

  [ Ian Munsie ]

  * SAUCE: (no-up) powerpc/cell: Move spu_handle_mm_fault() out of cell platform
  * SAUCE: (no-up) powerpc/cell: Move data segment faulting code out of cell platform
  * SAUCE: (no-up) powerpc/msi: Improve IRQ bitmap allocator
  * SAUCE: (no-up) powerpc/mm: Export mmu_kernel_ssize and mmu_linear_psize
  * SAUCE: (no-up) powerpc/powernv: Split out set MSI IRQ chip code
  * SAUCE: (no-up) cxl: Add new header for call backs and structs
  * SAUCE: (no-up) powerpc/powerpc: Add new PCIe functions for allocating cxl interrupts
  * SAUCE: (no-up) powerpc/mm: Add new hash_page_mm()
  * SAUCE: (no-up) powerpc/opal: Add PHB to cxl mode call
  * SAUCE: (no-up) powerpc/mm: Add hooks for cxl
  * SAUCE: (no-up) cxl: Add base builtin support
  * SAUCE: (no-up) cxl: Driver code for powernv PCIe based cards for userspace access
  * SAUCE: (no-up) cxl: Userspace header file.
  * SAUCE: (no-up) cxl: Add driver to Kbuild and Makefiles
  * SAUCE: (no-up) cxl: Add documentation for userspace APIs
 -- Tim Gardner <tim.gardner@xxxxxxxxxxxxx>   Tue, 30 Sep 2014 13:05:27 -0600

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

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https://bugs.launchpad.net/bugs/1374438

Title:
  power-nv ppc64el crash with ATI FirePro VGA card (snd_hda_intel)

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Utopic:
  Fix Released

Bug description:
  I have the following video card in my ppc64 system. When booting
  ubuntu in power-nv, I get kernel crashes:

  # lspci | grep AMD
  0001:09:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cedar GL [FirePro 2270]
  0001:09:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cedar HDMI Audio [Radeon HD 5400/6300 Series]

  The work around we have in place is 
  # cat /etc/modprobe.d/blacklist-ppc64el.conf 
  blacklist snd_hda_intel
  blacklist snd_hda_controller
  blacklist snd_hda_codec

  A snippet of the console log is:
  [   70.094661] init: console-setup main process (1262) terminated with status 1
  [   70.953213] EEH: Frozen PE#3 on PHB#1 detected
  [   70.953280] EEH: PE location: U78CB.001.WZS007L-P1-004     , PHB location: U78CB.001.WZS007L-P1-C32
  [   71.025925] [drm:rv770_stop_dpm] *ERROR* Could not force DPM to low.
  [   71.956221] Unable to handle kernel paging request for data at address 0x444f5250000000a2
  [   71.956325] Faulting instruction address: 0xc0000000006413dc
  [   71.956383] Oops: Kernel access of bad area, sig: 11 [#1]
  [   71.956428] SMP NR_CPUS=2048 NUMA PowerNV
  [   71.956474] Modules linked in: snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore rtc_generic shpchp uio_pdrv_genirq uio powernv_rng ses enclosure radeon i2c_algo_bit ttm drm_kms_helper drm ipr
  [   71.956770] CPU: 0 PID: 779 Comm: kworker/0:1 Tainted: G        W     3.16.0-17-generic #23-Ubuntu
  [   71.956852] Workqueue: events azx_probe_work [snd_hda_intel]
  [   71.956909] task: c000000fdee4fe40 ti: c000000fdeeb0000 task.ti: c000000fdeeb0000
  [   71.956975] NIP: c0000000006413dc LR: c00000000064187c CTR: c000000000641810
  [   71.957042] REGS: c000000fdeeb3730 TRAP: 0300   Tainted: G        W      (3.16.0-17-generic)
  [   71.957119] MSR: 9000000100009033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 24002084  XER: 00000000
  [   71.957287] CFAR: c000000000009358 DAR: 444f5250000000a2 DSISR: 40000000 SOFTE: 1
  GPR00: c00000000064187c c000000fdeeb39b0 c0000000013d4ee0 c000000000c1f8d8
  GPR04: 444f525000000012 c000000fdeeb3a50 000000000a1c0000 0000000000000000
  GPR08: 0000000000000000 c000000fdeeb3a60 d00000001449f9d0 d0000000144965b8
  GPR12: c000000000641810 c00000000fb80000 c0000000000df668 c000000fdf4e0c40
  GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
  GPR20: 0000000000000000 0000000000000001 0000000000000000 c000000fd1157824
  GPR24: 0000000000000000 d0000000144f5ad8 0000000000000001 00000000ffffffff
  GPR28: 0000000000000001 c000000000c1f8d8 c000000fdeeb3a50 444f525000000012
  [   71.958172] NIP [c0000000006413dc] __dev_printk+0x3c/0x100
  [   71.958218] LR [c00000000064187c] dev_warn+0x6c/0x90
  [   71.958263] Call Trace:
  [   71.958286] [c000000fdeeb39b0] [c000000fdeeb39f0] 0xc000000fdeeb39f0 (unreliable)
  [   71.958365] [c000000fdeeb3a30] [c00000000064187c] dev_warn+0x6c/0x90
  [   71.958433] [c000000fdeeb3a80] [d00000001449529c] azx_codec_create+0x41c/0x460 [snd_hda_controller]
  [   71.958523] [c000000fdeeb3b90] [d0000000144f1ca0] azx_probe_continue+0x370/0x7c0 [snd_hda_intel]
  [   71.958612] [c000000fdeeb3c40] [c0000000000d59ec] process_one_work+0x1ac/0x500
  [   71.958690] [c000000fdeeb3cd0] [c0000000000d62f0] worker_thread+0x190/0x6c0
  [   71.958757] [c000000fdeeb3d80] [c0000000000df770] kthread+0x110/0x130
  [   71.958825] [c000000fdeeb3e30] [c00000000000a468] ret_from_kernel_thread+0x5c/0x74
  [   71.958902] Instruction dump:
  [   71.958936] fba1ffe8 fbc1fff0 fbe1fff8 f8010010 f821ff81 7c9f2378 7c7d1b78 7cbe2b78
  [   71.959047] 60000000 60000000 2fbf0000 41de00a0 <e93f0090> 887d0001 2fa90000 3863ffd0
  [   71.959160] ---[ end trace b21ffc1b5f521aab ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-17-generic 3.16.0-17.23
  ProcVersionSignature: Ubuntu 3.16.0-17.23-generic 3.16.3
  Uname: Linux 3.16.0-17-generic ppc64le
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.14.7-0ubuntu2
  Architecture: ppc64el
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  Date: Fri Sep 26 12:53:49 2014
  Lsusb:
   Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=C
   SHELL=/bin/bash
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: root=UUID=aad7f49b-45f2-42ec-83b9-3233a014bae6 ro console=hvc0
  ProcLoadAvg: 0.07 0.05 0.05 1/1156 5329
  ProcLocks:
   1: FLOCK  ADVISORY  WRITE 2515 00:11:45214 0 EOF
   2: POSIX  ADVISORY  WRITE 2369 00:11:50266 0 EOF
   3: POSIX  ADVISORY  WRITE 2567 00:11:47202 0 EOF
  ProcSwaps:
   Filename				Type		Size	Used	Priority
   /swap.img                               file		8388544	0	-1
  ProcVersion: Linux version 3.16.0-17-generic (buildd@fisher03) (gcc version 4.9.1 (Ubuntu 4.9.1-15ubuntu1) ) #23-Ubuntu SMP Fri Sep 19 16:54:14 UTC 2014
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-17-generic N/A
   linux-backports-modules-3.16.0-17-generic  N/A
   linux-firmware                             1.134
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  cpu_cores: Number of cores present = 20
  cpu_coreson: Number of cores online = 19
  cpu_dscr: DSCR is 0
  cpu_freq:
   min:	3.693 GHz (cpu 156)
   max:	3.693 GHz (cpu 2)
   avg:	3.693 GHz
  cpu_runmode:
   Could not retrieve current diagnostics mode,
   No firmware implementation of function
  cpu_smt: SMT is on

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