Network interface is unstable, tg3 driver prints "DMA Status error. Resetting chip".

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 6.2
    • kernel-2.6.32-220.4.1
  • Red Hat Enterprise Linux 5.8
    • kernel 2.6.18-308.1.1.el5

Issue

  • The link goes up/down over and over and over again before the eth0 link becomes ready.
  • The system may take a long time to reboot.
  • It is possible that the server may reboot itself unexpectedly.
  • Repeating errors in dmesg and /var/log/messages
kernel: tg3 0000:03:06.0: firmware: requesting tigon/tg3_tso.bin
kernel: ADDRCONF(NETDEV_UP): eth0: link is not ready
kernel: tg3 0000:03:06.0: eth0: DMA Status error.  Resetting chip.
kernel: tg3 0000:03:06.0: eth0: 0x00000000: 0x164814e4, 0x22b00146, 0x02000010, 0x00804010
.. Multiple Lines of Register Dump ..
kernel: tg3 0000:03:06.0: eth0: 0x00007010: 0x44ea66f0, 0x00014a00, 0x009f0020, 0xa184a053
kernel: tg3 0000:03:06.0: eth0: 0: Host status block [00000007:00000001:(0000:0000:0000):(0000:0000)]
kernel: tg3 0000:03:06.0: eth0: 0: NAPI info [00000000:00000001:(0000:0000:01ff):0000:(00c8:0000:0000:0000)]
kernel: tg3 0000:03:06.0: eth0: Link is up at 1000 Mbps, full duplex
kernel: tg3 0000:03:06.0: eth0: Flow control is on for TX and on for RX
kernel: tg3 0000:03:06.0: tg3_stop_block timed out, ofs=4800 enable_bit=2
kernel: tg3 0000:03:06.0: eth0: Link is down

Resolution

  • The following kernel releases resolve this problem within the specified kernels:

  • Please update your kernel to a version higher than the ones listed.

Root Cause

  • RHEL 6 BZ 771085 Network does not stay up: "eth0: DMA Status error. Resetting chip."

    • Duplicate of RHEL 6 BZ 740052 tg3: Upgrade tg3 driver to 3.120+

  • RHEL 5 BZ 818566 Network does not stay up: "eth0: DMA Status error. Resetting chip."

    • Duplicate of RHEL 5 Update 9 BZ 795672 tg3 driver fails

    • Closed Errata RHEL 5 Update 8 BZ 833182 tg3 driver fails

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