** Tags added: patch
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https://bugs.launchpad.net/bugs/1601867
Title:
On reschedule_interrupt function issue.
Status in linux package in Ubuntu:
Confirmed
Bug description:
Below is result of perf report:
reschedule_interrupt /proc/kcore
│
▒
│
▒
│
▒
│ Disassembly of section load0:
▒
│
▒
│ ffffffff81828ca0 <load0>:
▒
50,00 │ nop
▒
50,00 │ pushq $0xffffffffffffff02
▒
│ cld
▒
│ add $0xffffffffffffff88,%rsp
▒
│ mov %r11,0x30(%rsp)
▒
│ mov %r10,0x38(%rsp)
▒
│ mov %r9,0x40(%rsp)
▒
│ mov %r8,0x48(%rsp)
▒
│ mov %rax,0x50(%rsp)
▒
│ mov %rcx,0x58(%rsp)
▒
│ mov %rdx,0x60(%rsp)
▒
│ mov %rsi,0x68(%rsp)
.....................................
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-28-generic 4.4.0-28.47
ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13
Uname: Linux 4.4.0-28-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: asu 3056 F.... pulseaudio
CurrentDesktop: MATE
Date: Mon Jul 11 18:49:42 2016
InstallationDate: Installed on 2016-04-29 (73 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-4.4.0-28-generic
root=/dev/mapper/192--168--0--108--vg-root ro
RelatedPackageVersions:
linux-restricted-modules-4.4.0-28-generic N/A
linux-backports-modules-4.4.0-28-generic N/A
linux-firmware 1.157.2
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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