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Message #185994
[Bug 1596412] Re: On native_write_msr_safe function issue
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
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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.
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