Bug#1003574: segfault in libc-2.33.so during i386 boot ofde QEMU VM

[Wolfgang Walter <wolfgang.walter@stwm.de>]

Am 2022-01-15 11:26, schrieb Aurelien Jarno:
> control: reopen -1
> control: merge 1003610 -1
> control: severity -1 serious
> control: found -1 glibc/2.33-1
> control: forwarded -1 
> https://sourceware.org/bugzilla/show_bug.cgi?id=28784
>
> On 2022-01-12 14:08, Christian Kastner wrote:
> > Hi Aurelien,
> >
> > thank you for the quick reply.
> >
> > On 2022-01-12 11:45, Aurelien Jarno wrote:
> > >> # Boot image. -enable-kvm assumes that this is being tested on amd64
> > >> # Optionally use -nographic for terminal output instead of GUI
> > >> $ qemu-system-i386 \
> > >> 	-machine q35 \
> > >> 	-enable-kvm \
> > >
> > > You might also want to try without -enable-kvm
> >
> > Indeed, this fixed the issue.
> >
> > So sorry for the noise. I was 120% sure that I had tried that.
>
> My turn to be sorry, it appears to be a genuine issue on the GNU libc
> side, and changing the CPU definition in QEMU, either with -cpu or by
> disabling kvm) just hide the bug. I was not able to reproduce the issue
> as you need a non-Intel CPU to get the issue with the command line your
> provided.
>
> This bug also affects via C7 CPUs. I have reported the issue upstream
> and provided a patch, currently waiting for review.
>
> Regards,
> Aurelien

I built the libc6 deb-package for i386 with your patch applied. It fixes 
the problem for VIA C7 and VIA Eden.

Thanks a lot for your help. I hope upstream will include this fix soon.

Regards,
--
Wolfgang Walter
Studentenwerk München
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