systemtap install ubuntu

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机器环境

uname -r

4.15.0-47-generic

uname -a

Linux jinbo-Latitude-E5440 4.15.0-47-generic #50-Ubuntu SMP Wed Mar 13 10:44:52 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

lsb_release -a

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
安装systemtap
sudo apt-get install systemtap systemtap-runtime

检测安装

执行命令测试一下或者使用stap-prep 查看

stap -v -e 'probe vfs.read {printf(“read performed\n”); exit()}'

WARNING: Kernel function symbol table missing [man warning::symbols]
Pass 1: parsed user script and 465 library scripts using 126200virt/44648res/7372shr/37716data kb, in 120usr/10sys/137real ms.
semantic error: while resolving probe point: identifier 'kernel' at /usr/share/systemtap/tapset/linux/vfs.stp:915:18source: probe vfs.read = kernel.function("vfs_read")^semantic error: missing x86_64 kernel/module debuginfo [man warning::debuginfo] under '/lib/modules/4.15.0-47-generic/build'semantic error: resolution failed in alias expansion buildersemantic error: while resolving probe point: identifier 'vfs' at <input>:1:7source: probe vfs.read {printf("read performed\n"); exit()}^semantic error: no matchPass 2: analyzed script: 0 probes, 0 functions, 0 embeds, 0 globals using 127256virt/46552res/7996shr/38772data kb, in 30usr/100sys/124real ms.
Pass 2: analysis failed.  [man error::pass2]
Tip: /usr/share/doc/systemtap/README.Debian should help you get started.

stap-prep

You need package linux-image-4.15.0-47-generic-dbgsym but it does not seem to be available
Ubuntu -dbgsym packages are typically in a separate repository
Follow https://wiki.ubuntu.com/DebuggingProgramCrash to add this repository

安装 linux-image-4.15.0-47-generic-dbgsym

根据提示进入 https://wiki.ubuntu.com/DebuggingProgramCrashCRTL+F  搜索 "Non-built-in debug symbol packages (*-dbgsym)"

或者直接访问如下链接：
https://wiki.ubuntu.com/DebuggingProgramCrash#Non-built-in_debug_symbol_packages_.28.2A-dbgsym.29

创建 /etc/apt/sources.list.d/ddebs.list

echo "deb http://ddebs.ubuntu.com $(lsb_release -cs) main restricted universe multiverse" | sudo tee -a /etc/apt/sources.list.d/ddebs.listecho -e "deb http://ddebs.ubuntu.com $(lsb_release -cs)-updates main restricted universe multiverse\ndeb http://ddebs.ubuntu.com $(lsb_release -cs)-proposed main restricted universe multiverse" | sudo tee -a /etc/apt/sources.list.d/ddebs.listsudo apt install ubuntu-dbgsym-keyringsudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F2EDC64DC5AEE1F6B9C621F0C8CAB6595FDFF622sudo apt-get update

继续检测

stap-prep

Please install linux-image-4.15.0-47-generic-dbgsym

根据提示安装：

sudo apt-get install linux-image-4.15.0-47-generic-dbgsymReading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:linux-image-unsigned-4.15.0-47-generic-dbgsym
The following NEW packages will be installed:linux-image-4.15.0-47-generic-dbgsym linux-image-unsigned-4.15.0-47-generic-dbgsym
0 upgraded, 2 newly installed, 0 to remove and 46 not upgraded.
Need to get 781 MB of archives.
After this operation, 5,485 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://ddebs.ubuntu.com bionic-updates/main amd64 linux-image-unsigned-4.15.0-47-generic-dbgsym amd64 4.15.0-47.50 [781 MB]
Get:1 http://ddebs.ubuntu.com bionic-updates/main amd64 linux-image-unsigned-4.15.0-47-generic-dbgsym amd64 4.15.0-47.50 [781 MB]
Get:1 http://ddebs.ubuntu.com bionic-updates/main amd64 linux-image-unsigned-4.15.0-47-generic-dbgsym amd64 4.15.0-47.50 [781 MB]
Get:1 http://ddebs.ubuntu.com bionic-updates/main amd64 linux-image-unsigned-4.15.0-47-generic-dbgsym amd64 4.15.0-47.50 [781 MB]
Get:2 http://ddebs.ubuntu.com bionic-updates/main amd64 linux-image-4.15.0-47-generic-dbgsym amd64 4.15.0-47.50 [12.9 kB]       
Fetched 618 MB in 5h 18min 8s (32.4 kB/s)                                                                                       
Selecting previously unselected package linux-image-unsigned-4.15.0-47-generic-dbgsym.
(Reading database ... 262650 files and directories currently installed.)
Preparing to unpack .../linux-image-unsigned-4.15.0-47-generic-dbgsym_4.15.0-47.50_amd64.ddeb ...
Unpacking linux-image-unsigned-4.15.0-47-generic-dbgsym (4.15.0-47.50) ...
Selecting previously unselected package linux-image-4.15.0-47-generic-dbgsym.
Preparing to unpack .../linux-image-4.15.0-47-generic-dbgsym_4.15.0-47.50_amd64.ddeb ...
Unpacking linux-image-4.15.0-47-generic-dbgsym (4.15.0-47.50) ...
Setting up linux-image-unsigned-4.15.0-47-generic-dbgsym (4.15.0-47.50) ...
Setting up linux-image-4.15.0-47-generic-dbgsym (4.15.0-47.50) ...

注：包有安装包有些大
Need to get 781 MB of archives.
After this operation, 5,485 MB of additional disk space will be used.

再次检测安装环境

stap-prep
没有任何提示，恭喜你安装成功了！

运行测试执行脚本

stap -v -e 'probe vfs.read {printf(“read performed\n”); exit()}'

Pass 1: parsed user script and 465 library scripts using 122716virt/49568res/7224shr/42640data kb, in 110usr/20sys/132real ms.
Pass 2: analyzed script: 1 probe, 1 function, 7 embeds, 0 globals using 348260virt/276660res/8656shr/268184data kb, in 2030usr/250sys/2291real ms.
Pass 3: translated to C into "/tmp/stap4N1z5i/stap_b59c23d8c67219a47c3e7d36242c79ab_2666_src.c" using 348260virt/276852res/8848shr/268184data kb, in 10usr/10sys/6real ms.
Pass 4: compiled C into "stap_b59c23d8c67219a47c3e7d36242c79ab_2666.ko" in 2460usr/430sys/2666real ms.
Pass 5: starting run.
read performed
Pass 5: run completed in 20usr/30sys/522real ms.

注：建议使用sudo 执行，或者按提示添加用户组