ixgbe reports "Detected Tx Unit Hang" in RHEL 7 and network connectivity is lost

Solution In Progress - Updated -

Issue

[ 8990.767984] ixgbe 0000:05:00.1 ens2f1: Detected Tx Unit Hang
  Tx Queue             <19>
  TDH, TDT             <0>, <4>
  next_to_use          <4>
  next_to_clean        <0>
tx_buffer_info[next_to_clean]
  time_stamp           <100847a81>
  jiffies              <100848604>
[ 8990.769934] ixgbe 0000:05:00.1 ens2f1: tx hang 1 detected on queue 19, resetting adapter
[ 8990.769937] ixgbe 0000:05:00.1 ens2f1: initiating reset due to tx timeout
[ 8990.769954] ixgbe 0000:05:00.1 ens2f1: Reset adapter
[ 8990.886811] bonding: bond2: link status definitely down for interface ens2f1, disabling it
[ 8996.011059] ixgbe 0000:05:00.0 ens2f0: Detected Tx Unit Hang
  Tx Queue             <19>
  TDH, TDT             <0>, <2>
  next_to_use          <2>
  next_to_clean        <0>
tx_buffer_info[next_to_clean]
  time_stamp           <100848fe9>
  jiffies              <100849a7c>
[ 8996.013148] ixgbe 0000:05:00.0 ens2f0: tx hang 1 detected on queue 19, resetting adapter
[ 8996.013150] ixgbe 0000:05:00.0 ens2f0: initiating reset due to tx timeout
[ 8996.013654] ixgbe 0000:05:00.0 ens2f0: Reset adapter
[ 8996.089928] bonding: bond2: link status definitely down for interface ens2f0, disabling it

Environment

  • Red Hat Enterprise Linux 7
  • ixgbe module

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