Bug#1003574: segfault in libc-2.33.so during i386 boot ofde QEMU VM
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
--
Aurelien Jarno GPG: 4096R/1DDD8C9B
aurelien@aurel32.net http://www.aurel32.net
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