Stale TCP connections with tg3 on Red Hat Enterprise Linux 6

Solution Verified - Updated -

Issue

  • Stale TCP connections
  • Connection are being reset unexpectedly
  • SSH disconnect just after login
  • Page allocation failure messages seen in /var/log/messages:
Jan  9 06:36:35 xxxxxxx kernel: swapper: page allocation failure. order:4, mode:0x20
Jan  9 06:36:35 xxxxxxx kernel: Pid: 0, comm: swapper Not tainted 2.6.32-358.14.1.el6.x86_64 #1

Environment

  • Red Hat Enterprise Linux 6
    • Broadcom tg3 NIC driver <= 3.132 (3.132 tg3 driver is included in RHEL 6 update 5)
    • GSO/TSO on

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