Hmm, thanks for the hint Thomas. Of the two formerly referenced same-source different result builds:
[1] => built 2021-03-23 in Hirsute => works [2] => built 2021-04-12 in Hirsute => fails [1]: https://launchpad.net/ubuntu/+source/qemu/1:5.2+dfsg-9ubuntu1/+build/21196422 [2]: https://launchpad.net/~paelzer/+archive/ubuntu/lp-1921664-testbuilds-rebuildold/+build/21392458 The default flags changed in https://launchpad.net/ubuntu/+source/dpkg/1.20.7.1ubuntu4 and according to the build logs both ran with that. Copy-Pasta from the log: dpkg (= 1.20.7.1ubuntu4), => In between those we did not switch the LTO default flags For clarification LTO is the default nowadays and we are not disabling it generally in qemu. So - yes the builds are with LTO, but both the good and the bad one are. Although looking at versions I see we have: - good case 10.2.1-23ubuntu2 - bad case 10.3.0-1ubuntu1 So maybe - while it wasn't LTO - something in 10.3 maybe even LTO- since-10.3 is what is broken? @Tommy - I don't have any of the test systems around anymore, if I'd build you a no-LTO qemu for testing what would you these days need - Hirsute, Impish, ... ? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1921664 Title: Coroutines are racy for risc64 emu on arm64 - crash on Assertion To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1921664/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
