Qemu + gdb


 
Thread Tools Search this Thread
Top Forums Programming Qemu + gdb
# 1  
Old 04-05-2011
Qemu + gdb

Hi, I got:

host machine: RedHat (RHEL6)
virtual machine: RedHat (RHEL6)

I run (on host machine):
qemu-system-x86_64 ...... -S -s

after that i run (on host machine):

gdb
target remote localhost:1234
set architecture i386:x86-64

and then i can use (on host machine) 'ctrl + c' to stop virtual machine and 'cont' to continue virtual machine.

Now, I created linux kernel module (in C) with:
asm("aa: jmp aa");

I insert that module to virtual machine. After that whole system stops (on asm("aa: jmp aa")). I would like to step debug after my module hangs.

Do you know the way how to do that?
Maybe how to modify next instructions?

Last edited by Chrisdot; 04-12-2011 at 08:14 AM..
# 2  
Old 04-05-2011
Are you doing this as root because adding a kernel module is a privileged instruction.
# 3  
Old 04-06-2011
I am root on host machine as well as on guest virtual machine.
Login or Register to Ask a Question

Previous Thread | Next Thread

8 More Discussions You Might Find Interesting

1. BSD

How to install Ultrix 4.2 on Qemu?

Hi Problem changed. I've got a message showing on the screen which says Guest has not initialized the display (yet) Any how I can fix this? Thanks Jack (4 Replies)
Discussion started by: lucky7456969
4 Replies

2. Virtualization and Cloud Computing

QEMU performance?

Heyas So, i like doing custom a LiveImage of my OS. Using Redhats kickstart/livecd-creator method. Anyway, so i would like to test the liveimages... AND also, i WOULD like to install FreeBSD, Solaris, or whatever, onto a Virtual Machine. I used to use Oracles Virtualbox, but eversince... (3 Replies)
Discussion started by: sea
3 Replies

3. IP Networking

Create a Bridge for Qemu using only loopback

hello networking folks, i have 3 virtual machines that need to talk to each other How can i create a bridge to loopback ? -net tap,vlan=0,ifname=tap1 where tap1 is connected to lo:1 , tap2 is connected to lo:2 etc thx (0 Replies)
Discussion started by: TwiceDone
0 Replies

4. Red Hat

help about qemu-kvm boot with initrd

I used the redhat RHEL6 boot with initrd but it failed, can sb help me # /usr/libexec/qemu-kvm --enable-kvm -smp 8 -m 1024 -net nic,model=virtio -net tap,script=/etc/qemu-ifup -initrd /boot/initramfs-2.6.32-279.el6.x86_64.img -kernel /boot/vmlinuz-2.6.32-279.el6.x86_64 -append "root=/dev/ram... (4 Replies)
Discussion started by: yanglei_fage
4 Replies

5. Programming

Running c code in ARM QEMU

I created and Compiled a C program to run in QEMU for ARM. When I run the program using the command #qemu-arm -L /home/arm-2010.09/arm-none-linux-gnueabi/libc ./test it gives me the following error: If 'qemu-arm' is not a typo you can use command-not-found to lookup the package that contains... (0 Replies)
Discussion started by: rupeshkp728
0 Replies

6. AIX

IBM AIX and QEMU Emulator?

Hi friends, I am a UNIX lover. I have tried several unix flavors including linux, solaris(x86) and FreeBSD, all these are the unices which can be installed on x86 hardware. Now to use the IBM AIX, I searched and googled alot, finally I came across QEME, which emulates the PowerPC platorm to turn... (9 Replies)
Discussion started by: gabam
9 Replies

7. Filesystems, Disks and Memory

QEMU not booting my image

hello all, I have been trying to boot an image (.IMG) using qemu, for quite some time now and i can't seem to get it to work. I've been able to boot from the Windows XP CD, the Debian iso image, etc, so I know qemu is configured properly and is working. But when it come to booting an image that I... (34 Replies)
Discussion started by: neur0n
34 Replies

8. UNIX for Dummies Questions & Answers

Anyone ever used qemu and networked it ?

hi i got a virtual linux machine running on qemu my problem is connecting it to the internet im a bit confused weather i have to make a virtual network card in qemu and than tun tap it? can anyone thats done it before help me out? (1 Reply)
Discussion started by: russian460
1 Replies
Login or Register to Ask a Question