On find_vma function issue.
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Triaged
|
Medium
|
Unassigned |
Bug Description
Below is result of perf report:
find_vma /proc/kcore
│ ◆
│ ▒
│ ▒
│ Disassembly of section load0: ▒
│ ▒
│ ffffffff811c49c0 <load0>: ▒
14,29 │ nop ▒
│ push %rbp ▒
│ mov %rsp,%rbp ▒
│ push %r12 ▒
│ push %rbx ▒
│ mov %rdi,%r12 ▒
│ mov %rsi,%rbx ▒
│ sub $0x8,%rsp ▒
│ callq 0xffffffff811b8b50 ▒
│ test %rax,%rax ▒
│ ↓ je 29 ▒
│20: add $0x8,%rsp ▒
│ pop %rbx ▒
│ pop %r12 ▒
│ pop %rbp ▒
│ ← retq ▒
│29: mov 0x8(%r12),%rdx ▒
│ test %rdx,%rdx ▒
│ ↓ jne 48 ▒
│ ↑ jmp 20 ▒
│35: cmp -0x20(%rdx),%rbx ▒
14,29 │ lea -0x20(%rdx),%rax ▒
│ ↓ jae 54 ▒
│ mov 0x10(%rdx),%rdx ▒
14,29 │43: test %rdx,%rdx ▒
│ ↓ je 54 ▒
│48: cmp -0x18(%rdx),%rbx ▒
57,14 │ ↑ jb 35 ▒
│ mov 0x8(%rdx),%rdx
.......
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-
ProcVersionSign
Uname: Linux 4.4.0-28-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CurrentDesktop: MATE
Date: Mon Jul 11 13:32:25 2016
InstallationDate: Installed on 2016-04-29 (72 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=
RelatedPackageV
linux-
linux-
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.
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.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: ALABAMA
dmi.product.
dmi.sys.vendor: Olidata S.p.A.
This change was made by a bot.