ICE Driver: Erroneous Transmit Bytes Spikes in /proc/net/dev

Solution Unverified - Updated -

Issue

  • While monitoring the ICE device statistics in /proc/net/dev, a sudden spike in Transmit Bytes was observed, reaching approximately 13.7 Tbps.
  • A review of the network statistics in /proc/net/dev further confirmed an increase of about 500 TiB during the event.
  • The ethtool statistics from the interface don't show the same spike.
  • The sysstat sar files also show this spike together with an impossible %ifutil value.

Environment

  • Red Hat Enterprise Linux 8.9
  • Red Hat Enterprise Linux 8.10
  • The kernel's inbox ICE driver
  • Kernel is 4.18.0-553.53.1.el8_10 or older

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