Today I've noticed that the sys-kernel/gentoo-kernel's test suite that spawns qemu VM hangs on amd64. More specifically, in "working" state the test kernel boots fine inside the VM, while in the "broken" state qemu just shows black screen with lowercase "k" in the upper left corner, consumes 100% CPU and nothing else happens. My long bisecting journey has lead my to the conclusion that the upgrade caused by stabilization of 6.1.0* has caused the problem. More specifically: - the previous stable (6.0.0-r54) works fine - the current stable (6.1.0-r3 and -r2 prior to that) are broken - 6.2.0 works fine The relevant Dockerfiles and scripts are found here: https://github.com/mgorny/binpkg-docker The make/build.sh target that should be sufficient to reproduce this is: amd64-gentoo-kernel-bin-newest (this uses prebuilt kernel to avoid waiting a lot for the build to finish) Note that you need some diff in local.diff to run it, you can create one e.g. via: echo > 1 diff -Nu /dev/null 1 > local.diff For the purpose of building kernels I'm going to switch to 6.2.0 but I suppose this may affect regular users too.
There's already been some 6.1.0 breakage (bug 829721) so I wonder if we should just stable 6.2.0 given it's fixed a security issue (bug 810544) and two apparent regressions in 6.1.0.
