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[asu <corcodel.marian@xxxxxxxxx>]

Not have this issue with kernel stock.

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https://bugs.launchpad.net/bugs/1592381

Title:
  On function mutex_unlock issue

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  After pop    %rbp is running instructions:
  Bellow is result of perf report:
         │                                                                                                        ◆
         │                                                                                                        ▒
         │                                                                                                        ▒
         │    Disassembly of section load0:                                                                       ▒
         │                                                                                                        ▒
         │    ffffffff81823af0 <load0>:                                                                           ▒
   50,00 │      nop                                                                                               ▒
         │      movq   $0x0,0x18(%rdi)                                                                            ▒
         │      lock   incl   (%rdi)                                                                              ▒
   50,00 │    ↓ jg     1c                                                                                         ▒
         │      push   %rbp                                                                                       ▒
         │      mov    %rsp,%rbp                                                                                  ▒
         │      callq  0xffffffff81823aa0                                                                         ▒
         │      pop    %rbp                                                                                       ▒
         │1c:   repz   retq                                                                                       ▒
         │      xchg   %ax,%ax

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-24-generic 4.4.0-24.43
  ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
  Uname: Linux 4.4.0-24-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  asu        3226 F.... pulseaudio
  CurrentDesktop: MATE
  Date: Tue Jun 14 14:45:44 2016
  InstallationDate: Installed on 2016-04-29 (45 days ago)
  InstallationMedia: Ubuntu-Studio 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  IwConfig:
   lo        no wireless extensions.
   
   enp1s0    no wireless extensions.
  MachineType: Olidata S.p.A. ALABAMA
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-24-generic root=/dev/mapper/192--168--0--108--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-24-generic N/A
   linux-backports-modules-4.4.0-24-generic  N/A
   linux-firmware                            1.157
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/08/2008
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: S0101
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: To be filled by O.E.M.
  dmi.board.vendor: To be filled by O.E.M.
  dmi.board.version: To be filled by O.E.M.
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrS0101:bd07/08/2008:svnOlidataS.p.A.:pnALABAMA:pvrToBeFilledByO.E.M.:rvnTobefilledbyO.E.M.:rnTobefilledbyO.E.M.:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: ALABAMA
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: Olidata S.p.A.

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