Last Modified: Nov 07, 2022
Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1
Opened: Apr 05, 2017 Severity: 3-Major
Guest configurations with mergeable buffers disabled are not supported.
tmm core. Traffic disrupted while tmm restarts. When mergeable buffers are disabled, the 13.0.0 virtio driver crashes and the 13.1.0 driver stops processing, i.e., it does not attach to the device.
Guest configuration explicitly disables mergeable buffers: <host mrg_rxbuf='off'/>.
Do not disable mergeable buffers.
The system now logs an alert rather than enters a restart loop. Note: There is no plan to support disabled mergeable buffers.