[Qemu-devel] Bug with GDB from commit ca3e40e

[Qemu-devel] Bug with GDB from commit ca3e40e

[Marc Marí]

Hi

I was trying to debug some stuff in the bootloader and the optionrom,
and I found a bug with QEMU and GDB. In commit ca3e40e (a pull request
from Michael), I get this:

 x86_64-softmmu/qemu-system-x86_64 --enable-kvm \
         -kernel /boot/vmlinuz-4.1.7-200.fc22.x86_64 -s -S
 qemu-system-x86_64: -s: address resolution failed for :: Name or
         service not known

In the previous commit (3c23402) I don't get the error:
 x86_64-softmmu/qemu-system-x86_64 --enable-kvm \
        -kernel /boot/vmlinuz-4.1.7-200.fc22.x86_64 -s -S
 (Opens QEMU and blocks, as expected, and I can connect GDB)

I cannot see the problem (maybe because it's a bit late). I'll look at
it again tomorrow, but any help is appreciated.

My system is a Fedora 22, Linux 4.2.5-201, x86_64, and GDB version
7.9.1-20.

Thanks
Marc

Re: [Qemu-devel] Bug with GDB from commit ca3e40e

[Michael S. Tsirkin]

On Mon, Nov 16, 2015 at 02:04:41AM +0100, Marc Marí wrote:
> Hi
> 
> I was trying to debug some stuff in the bootloader and the optionrom,
> and I found a bug with QEMU and GDB. In commit ca3e40e (a pull request
> from Michael), I get this:
> 
>  x86_64-softmmu/qemu-system-x86_64 --enable-kvm \
>          -kernel /boot/vmlinuz-4.1.7-200.fc22.x86_64 -s -S
>  qemu-system-x86_64: -s: address resolution failed for :: Name or
>          service not known
> 
> In the previous commit (3c23402) I don't get the error:
>  x86_64-softmmu/qemu-system-x86_64 --enable-kvm \
>         -kernel /boot/vmlinuz-4.1.7-200.fc22.x86_64 -s -S
>  (Opens QEMU and blocks, as expected, and I can connect GDB)
> 
> I cannot see the problem (maybe because it's a bit late). I'll look at
> it again tomorrow, but any help is appreciated.
> 
> My system is a Fedora 22, Linux 4.2.5-201, x86_64, and GDB version
> 7.9.1-20.
> 
> Thanks
> Marc

This command line seems to work for me.

-- 
MST

Re: [Qemu-devel] Bug with GDB from commit ca3e40e

[Marc Marí]

On Mon, 16 Nov 2015 08:45:09 +0200
"Michael S. Tsirkin" <mst@redhat.com> wrote:

> On Mon, Nov 16, 2015 at 02:04:41AM +0100, Marc Marí wrote:
> > Hi
> > 
> > I was trying to debug some stuff in the bootloader and the
> > optionrom, and I found a bug with QEMU and GDB. In commit ca3e40e
> > (a pull request from Michael), I get this:
> > 
> >  x86_64-softmmu/qemu-system-x86_64 --enable-kvm \
> >          -kernel /boot/vmlinuz-4.1.7-200.fc22.x86_64 -s -S
> >  qemu-system-x86_64: -s: address resolution failed for :: Name or
> >          service not known
> > 
> > In the previous commit (3c23402) I don't get the error:
> >  x86_64-softmmu/qemu-system-x86_64 --enable-kvm \
> >         -kernel /boot/vmlinuz-4.1.7-200.fc22.x86_64 -s -S
> >  (Opens QEMU and blocks, as expected, and I can connect GDB)
> > 
> > I cannot see the problem (maybe because it's a bit late). I'll look
> > at it again tomorrow, but any help is appreciated.
> > 
> > My system is a Fedora 22, Linux 4.2.5-201, x86_64, and GDB version
> > 7.9.1-20.
> > 
> > Thanks
> > Marc
> 
> This command line seems to work for me.
> 

Old QEMU version. Issue solved in commit 2ea1793.

It seems it has something to do with the port in InetSocketAddress in
qapi-schema.json.

I should not trace "bugs" until so late.

Thanks
Marc