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qemu: hotplug: Rollback FD passthrough for 'slirpfd' and 'vdpafd' on hotplug failure

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On failure to plug the device the cleanup path didn't roll back the FD
passing to qemu thus qemu would hold the FDs indefinitely.

Resolves: https://issues.redhat.com/browse/RHEL-53964
Fixes: b79abf9c3c (vdpafd)
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2024-08-12 16:04:20 +02:00
parent 1b797e6421
commit b3edf03c31
1 changed files with 3 additions and 0 deletions
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3
src/qemu/qemu_hotplug.c
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@ -1456,6 +1456,9 @@ qemuDomainAttachNetDevice(virQEMUDriver *driver,
VIR_WARN("Failed to remove network backend for netdev %s",
netdev_name);
qemuFDPassTransferMonitorRollback(netpriv->vdpafd, priv->mon);
qemuFDPassDirectTransferMonitorRollback(netpriv->slirpfd, priv->mon);
for (n = netpriv->tapfds; n; n = n->next)
qemuFDPassDirectTransferMonitorRollback(n->data, priv->mon);