graphic: 0.852 semantic: 0.814 device: 0.722 performance: 0.685 hypervisor: 0.658 x86: 0.577 socket: 0.553 network: 0.550 vnc: 0.512 mistranslation: 0.495 virtual: 0.478 i386: 0.468 architecture: 0.462 debug: 0.438 kernel: 0.415 risc-v: 0.393 ppc: 0.381 user-level: 0.374 VMM: 0.371 arm: 0.365 register: 0.358 TCG: 0.341 boot: 0.341 PID: 0.333 peripherals: 0.316 permissions: 0.227 KVM: 0.139 assembly: 0.137 files: 0.132 "Guest says index 40947 is available" Description of problem: As discussed [here](https://github.com/danobi/vmtest/issues/96) I have been running several instances of QEMU in parallel at `SCHED_IDLE`, and I've been getting QGA setup failures. Steps to reproduce: 1. Install [vmtest](https://github.com/danobi/vmtest) 2. Run lots of copies of the command in the [github issues](https://github.com/danobi/vmtest/issues/96) via `chrt --idle 0`. 3. Unclear if this is the cause, but then I use the computer in the meantime so probably starve the `SCHED_IDLE` QEMU threads running from 2. This leads to failures to connect to the guest agent and then at the end I see this: ``` Guest says index 40947 is available qemu-system-x86_64: Guest says index 40947 is available qemu-system-x86_64: Guest says index 40947 is available ``` The developer of vmtest seemed to think this may be of interest to QEMU developers based on the tone of the [comment they found](https://github.com/danobi/vmtest/issues/96#issuecomment-2483860554) in the QEMU code. I've now installed QEMU from Git master so I can report back whether the bug still appeared.