Questions tagged [tracing]

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trace-pid file not being generated. Why?

I'm trying to generate the trace-pid file, but it isn't being generated. However instead of trace-pid file being generated, the entire output of that file is being printed on the terminal itself. Why ...
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0 answers
106 views

Tracing is disabled in my QEMU. How to solve that?

This was my configure command: ./configure --target-list=x86_64-softmmu --enable-kvm --enable-trace-backends=simple --disable-werror The build is also successful. But when I'm doing: sudo trace-cmd ...
0 votes
1 answer
84 views

Is it guaranteed that a file descriptor will be created when a process accesses a file? Specifically in /proc/pid/fd

I am creating an ebpf program that has a tracepoint on the syscall read(). The purpose of the program is to count how many times a file is read. My current method to trace this is as follows: When ...
4 votes
3 answers
6k views

Interfacing strace with Process Name instead of PID

How do I implement a wrapper script pstrace in bash that changes the interface of [sudo] strace -c -p [PID] to [sudo] pstrace -c -p [PROCESS-NAME] similar to how killall [PROCESS-NAME] is used. ...
0 votes
1 answer
249 views

Blktrace missing I/O events

I'm using blktrace to capture the traffic that goes to my device and have been dealing with some painful issues. Wondering if you guys can confirm/correct my findings. Seems like blktrace is missing ...
0 votes
3 answers
124 views

How to trace the access to Firefox's password manager?

Recently my Firefox started to prompt me for the password manager's master password right after starting it which is quite annoying, and I can't find what's triggering it. This change in behavior ...
2 votes
1 answer
96 views

Access xmm registers in eBPF program

I am trying to use bcc-tools to trace a user process using uprobe, but some functions take floating point arguments. According to x86_64 ABI, these values are normally passed in the xmm registers. ...
0 votes
2 answers
12k views

Process Monitor (procmon) does not show some UDP / TCP network activity events, shown in Network Monitor

I observe sometimes a difference between Process Monitor and Network Monitor. Process Monitor does not show some UDP / TCP network events. Here is an example: net use * \\test12345.domain.local\...
13 votes
2 answers
9k views

IIS 8.5: Failed Request Tracing missing from IIS Manager

In Windows Server 2012 R2, I've installed the IIS "Tracing" module. However when I start IIS Manager, I don't see the Failed Request Tracing option anywhere, in any pane or properties window of any ...
0 votes
0 answers
627 views

windows server 2012 network socket debugging (winsock / netsh) - debugging tools

I would like to monitor and debug the way an application (FileZilla) is accessing the tcp/ip stack (socket assignments and related operations). The application is installed on a windows server 2012 ...
2 votes
2 answers
217 views

Log application changes made to the system

Windows 7, 64bit. I have an application which I don't trust but still need to run. I would like to run the installer of this application and later on the installed executable under some kind of "...
0 votes
1 answer
1k views

Use SSH to pipe tcpdump into wireshark with "command" in authorized_keys

we want to enable real-time network tracing for Application Testing. We want to grant as little permissions/rights on the remote host that will run tcpdump. So i tried to setup an authorized key ...
0 votes
1 answer
2k views

How to determine who is beeping on my computer?

I have HP dm3 laptop and windows 7 installed on it. There is some beep for a 0.5 seconds periodically. There is no regularity. I did not found nothing suspicious in evets log. There is nothing ...
0 votes
1 answer
397 views

How to track a android tablet in the same network using MAC address

I lost my tablet , but I can see that the tablet is connected to the network on my router: So I know the MAC address but I am unable to trace my tablet using this information and I am running out of ...
2 votes
5 answers
42k views

How can I trace a connection through a proxy server and/or a VPN?

Someone is continuously attacking my ftp servers. I observed the IPs he left, but running whois on all of them, I concluded that they are socks5 proxy servers. I even found the site where he is ...
2 votes
3 answers
4k views

In a multicore system, will each cpu have its own linux kernel?

What i meant was, in a multicore system with 'n' number of cpu's, will each cpu have its own linux kernel installed, or will all cpu's have a copy of the same kernel image? Another question ...
0 votes
3 answers
2k views

Find out what app is using a file under Windows [duplicate]

Possible Duplicate: Windows 7: File In Use when deleting file Sometimes I can't delete a file because it's being used by some unknown applications. How can I find out what apps?
3 votes
1 answer
2k views

What is Apache 2 busy doing?

I'm using Apache 2.2.17 on Ubuntu - Apache seems to be occupying 100% of the CPU. How can I know what Apache is busy doing to cause such high CPU usage? Should I use some stack tracing tools? Or ...
0 votes
1 answer
134 views

Online email tracing tool [closed]

About 2 years ago I came across an online tool that would allow you to append something to the end of a destination email address. When the email was opened, the tool would email you their ...