Ubuntu
qemu package

  1. Bug #1921664
  2. Comment #36

Comment 36 for bug 1921664

Revision history for this message
Paride Legovini (paride) wrote : Re: Coroutines are racy for risc64 emu on arm64 - crash on Assertion

In the end looks like it's LTO. I rebuilt Jammy's qemu (1:6.2+dfsg-2ubuntu6.3) with

  DEB_BUILD_MAINT_OPTIONS = optimize=-lto

and it doesn't crash anymore. I can't really tell if the issue is with Qemu's code or is due to a compiler bug. The rebuilt package is available in a PPA:

  https://launchpad.net/~paride/+archive/ubuntu/qemu-bpo

which despite the name doesn't actually contain backports.

FWIW Fedora disables LTO on aarch64 (arm64) because of this issue, see:

  https://bugzilla.redhat.com/show_bug.cgi?id=1952483
  https://src.fedoraproject.org/rpms/qemu/c/38b1a6c732bee90f75345c4d07

This is also discussed in this short Fedora mailing list thread:

https://<email address hidden>/msg159665.html