This patch bellow set type notrace on all required function because trace is explycit performed and not need to put auto by compile on begin and end of function. Whit this patch applied only on perf must have proc stalled.
** Patch added: "apply_on_nes.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1596412/+attachment/4690917/+files/apply_on_nes.patch -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1596412 Title: On native_write_msr_safe function issue Status in linux package in Ubuntu: Confirmed Bug description: Bellow is content of perf report: │ ◆ │ ▒ │ ▒ │ Disassembly of section load0: ▒ │ ▒ │ ffffffff810644b0 <load0>: ▒ │ push %rbp ▒ │ mov %esi,%eax ▒ │ mov %edi,%ecx ▒ │ mov %rsp,%rbp ▒ │ wrmsr ▒ 100,00 │ xor %eax,%eax ▒ │ pop %rbp ▒ │ ← retq ▒ │ xchg %ax,%ax ▒ Process stall on do_trace_write_msr. 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 2888 F.... pulseaudio CurrentDesktop: MATE Date: Mon Jun 27 07:45:26 2016 InstallationDate: Installed on 2016-04-29 (58 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 1.157.1 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1596412/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
