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id = 597
title = "sunhme sometimes causes the VM to hang forever"
state = "opened"
created_at = "2021-09-03T19:11:43.767Z"
closed_at = "n/a"
labels = ["target: sparc"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/597"
host-os = "Debian 11"
host-arch = "x86_64"
qemu-version = "6.1.0"
guest-os = "Debian ports/sid"
guest-arch = "sparc64"
description = """When using sunhme, sometimes on receiving traffic (and doing disk IO?) it will get slower and slower until it becomes entirely unresponsive, which does not happen on the real hardware I have sitting next to me (Sun Netra T1, running the same OS+kernel, though not the same image)
virtio-net-pci does not, so far, demonstrate the problem, and neither does just sending a lot of traffic out over the sunhme interface, so it appears to require receiving or some more complex interaction.
It doesn't always happen immediately, it sometimes takes a couple of tries with the command, but when it does, it's gone.
Output logged to console below."""
reproduce = """1. Log into VM (rich/omgqemu)
2. sudo apt clean;sudo apt update;
3. If it doesn't lock up the VM, repeat step 2 a few times."""
additional = """Disk image can be found [here](https://www.dropbox.com/s/0oosyf7xej44v9n/sunhme_repro_disk.tgz?dl=0) (tarred in the hope that it does something reasonable with sparseness)
Console output can be found [here](https://www.dropbox.com/s/t1wxx41vzv8p3l6/sunhme%20sadness.txt?dl=0)
Ah yes, [the initrd and vmlinux](https://www.dropbox.com/s/t7i4gs7poqaeanz/oops_boot.tgz?dl=0) would help, wouldn't they, though I imagine the ones in the VM itself would boot..."""
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