[Qemu-devel] qemu segfault

[Qemu-devel] qemu segfault

[Alexander E. Patrakov]

To reproduce the segfault:

Downolad the image of RedHat 7.0 boot floppy:

http://ftp.redhat.com/pub/redhat/linux/7.0/en/os/i386/images/boot.img

Execute qemu with the following command line:

/usr/local/bin/qemu -fda boot.img -m 32 -boot a

Then press Enter in the boot loader screen. qemu will segfault. The 
segfault does not happen with qemu-fast.

Any response will be appreciated, a fix will be appreciated even more. 
The best is if you fix it and create a small testcase for regression tests.

-- 
Alexander E. Patrakov

Re: [Qemu-devel] qemu segfault

[Fabrice Bellard]

Alexander E. Patrakov wrote:
> To reproduce the segfault:
> 
> Downolad the image of RedHat 7.0 boot floppy:
> 
> http://ftp.redhat.com/pub/redhat/linux/7.0/en/os/i386/images/boot.img
> 
> Execute qemu with the following command line:
> 
> /usr/local/bin/qemu -fda boot.img -m 32 -boot a
> 
> Then press Enter in the boot loader screen. qemu will segfault. The 
> segfault does not happen with qemu-fast.
> 
> Any response will be appreciated, a fix will be appreciated even more. 
> The best is if you fix it and create a small testcase for regression tests.

It is fixed in the CVS version.

Fabrice.

Re: [Qemu-devel] qemu segfault

[David Sibai]

Hello,
About the floppy, you said that it worked with qemu-fast.
> Then press Enter in the boot loader screen. qemu will segfault. The
> segfault does not happen with qemu-fast.
I tried, and all I get from qemu-fast is a blank screen. I actually have never 
been able to run anything with qemu-fast. Is there anything special you did 
to have it run?

David

Re: [Qemu-devel] qemu segfault

[vaise]

On Thursday 20 May 2004 17:00, David Sibai wrote:
> Hello,
> About the floppy, you said that it worked with qemu-fast.
>
> > Then press Enter in the boot loader screen. qemu will segfault. The
> > segfault does not happen with qemu-fast.
>
> I tried, and all I get from qemu-fast is a blank screen. I actually have
> never been able to run anything with qemu-fast. Is there anything special
> you did to have it run?

If I understood well, qemu-fast should only work (from now) with modified OS 
=> Linux only. See Fabrice Documentation.
the good news is that there is only 2 line to modify. So, maybe, Windows could 
be "patched" one day too.

Re: [Qemu-devel] qemu segfault

[Alexander E. Patrakov]

David Sibai wrote:
> Hello,
> About the floppy, you said that it worked with qemu-fast.
> 
>>Then press Enter in the boot loader screen. qemu will segfault. The
>>segfault does not happen with qemu-fast.
> 
> I tried, and all I get from qemu-fast is a blank screen. I actually have never 
> been able to run anything with qemu-fast. Is there anything special you did 
> to have it run?

No, I have just downloaded a binary distribution.

The bad thing is that qemu-fast cannot be compiled at all on my distro 
(LFS CVS b6_0 branch) because of ld assertion failure. Binutils version 
is 2.15.90.0.3, gcc is 3.3.3, glibc is a "known good CVS snapshot" 
because there is no other way to get NPTL.

Just plain qemu works even if compiled from sources.

-- 
Alexander E. Patrakov