After shutting down the inner VM I have started the kernel debugger on outer VM. Dumping the backtraces for all CPUs resulted in https://paste.ubuntu.com/p/Smp2kc55ZY/
All cores except the one I used to enter kdb have this backtrace: [<ffffffffb4022970>] handle_IPI+0x8e/0x194 [<ffffffffb40d4e62>] handle_percpu_devid_irq+0x88/0x1c6 [<ffffffffb40cf3ca>] handle_irq_desc+0x26/0x46 [<ffffffffb40cf466>] generic_handle_domain_irq+0x16/0x22 [<ffffffffb40dd994>] ipi_mux_process+0x78/0xf6 [<ffffffffb4026904>] sbi_ipi_handle+0x22/0x76 [<ffffffffb40cf3ca>] handle_irq_desc+0x26/0x46 [<ffffffffb40cf466>] generic_handle_domain_irq+0x16/0x22 [<ffffffffb46be9c4>] riscv_intc_aia_irq+0x26/0x40 [<ffffffffb4d5d794>] handle_riscv_irq+0x4c/0x7c [<ffffffffb4d6a376>] call_on_irq_stack+0x32/0x40 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2112578 Title: riscv64: KVM does not release harts To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2112578/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
