kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Thanks again for testing, Mark.  I've created on more test kernel.  This
kernel makes no changes to the igb code at all.  So if the bug does not
exist with your current up to date kernel, it shouldn't occur with the
test kernel.

Could you and any other folks affected by this bug test my new test
kernel? It can be downloaded from:

http://kernel.ubuntu.com/~jsalisbury/lp1454892/lts-backport-utopic/

Note, with this test kernel you would need to install both the linux-
image and linux-image-extra .deb packages.

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Packages, which is subscribed to linux-lts-utopic in Ubuntu.
https://bugs.launchpad.net/bugs/1492146

Title:
  igb Detected Tx Unit Hang

Status in linux-lts-utopic package in Ubuntu:
  Confirmed
Status in linux-lts-utopic source package in Trusty:
  Fix Released

Bug description:
  Hello!

  Have a:

  >lsb_release -a
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description:    Ubuntu 14.04.3 LTS
  Release:        14.04
  Codename:       trusty

  with kenel 3.16.0-46-generic.

  Today i do dist-upgrade and kernel was upgraded to 3.16.0-48-generic
  version.

  After reboot i've got this:

  Sep  4 09:02:52 mail kernel: [  310.616324] igb 0000:02:00.0 em1: Reset adapter Sep  4 09:02:52 mail kernel: [  310.831157] igb 0000:02:00.1 em2: Reset adapter Sep  4 09:02:56 mail kernel: [  315.154686] igb 0000:02:00.0 em1: igb: em1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX Sep  4 09:02:56 mail kernel: [  315.202651] igb 0000:02:00.1 em2: igb: em2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX Sep  4 09:03:02 mail kernel: [  321.608099] igb 0000:02:00.0: Detected Tx Unit Hang
  Sep  4 09:03:02 mail kernel: [  321.608099]   Tx Queue             <6>
  Sep  4 09:03:02 mail kernel: [  321.608099]   TDH                  <23>
  Sep  4 09:03:02 mail kernel: [  321.608099]   TDT                  <23>
  Sep  4 09:03:02 mail kernel: [  321.608099]   next_to_use          <25>
  Sep  4 09:03:02 mail kernel: [  321.608099]   next_to_clean        <23>
  Sep  4 09:03:02 mail kernel: [  321.608099] buffer_info[next_to_clean]
  Sep  4 09:03:02 mail kernel: [  321.608099]   time_stamp           <1000012af>
  Sep  4 09:03:02 mail kernel: [  321.608099]   next_to_watch        <ffff880272571240>
  Sep  4 09:03:02 mail kernel: [  321.608099]   jiffies              <100001531>
  Sep  4 09:03:02 mail kernel: [  321.608099]   desc.status          <120200>
  Sep  4 09:03:04 mail kernel: [  323.607349] igb 0000:02:00.0: Detected Tx Unit Hang
  Sep  4 09:03:04 mail kernel: [  323.607349]   Tx Queue             <6>
  Sep  4 09:03:04 mail kernel: [  323.607349]   TDH                  <23>
  Sep  4 09:03:04 mail kernel: [  323.607349]   TDT                  <23>
  Sep  4 09:03:04 mail kernel: [  323.607349]   next_to_use          <25>
  Sep  4 09:03:04 mail kernel: [  323.607349]   next_to_clean        <23>
  Sep  4 09:03:04 mail kernel: [  323.607349] buffer_info[next_to_clean]
  Sep  4 09:03:04 mail kernel: [  323.607349]   time_stamp           <1000012af>
  Sep  4 09:03:04 mail kernel: [  323.607349]   next_to_watch        <ffff880272571240>
  Sep  4 09:03:04 mail kernel: [  323.607349]   jiffies              <100001725>
  Sep  4 09:03:04 mail kernel: [  323.607349]   desc.status          <120200>
  Sep  4 09:03:06 mail kernel: [  325.606602] igb 0000:02:00.0: Detected Tx Unit Hang
  Sep  4 09:03:06 mail kernel: [  325.606602]   Tx Queue             <6>
  Sep  4 09:03:06 mail kernel: [  325.606602]   TDH                  <23>
  Sep  4 09:03:06 mail kernel: [  325.606602]   TDT                  <23>
  Sep  4 09:03:06 mail kernel: [  325.606602]   next_to_use          <25>
  Sep  4 09:03:06 mail kernel: [  325.606602]   next_to_clean        <23>
  Sep  4 09:03:06 mail kernel: [  325.606602] buffer_info[next_to_clean]
  Sep  4 09:03:06 mail kernel: [  325.606602]   time_stamp           <1000012af>
  Sep  4 09:03:06 mail kernel: [  325.606602]   next_to_watch        <ffff880272571240>
  Sep  4 09:03:06 mail kernel: [  325.606602]   jiffies              <100001919>
  Sep  4 09:03:06 mail kernel: [  325.606602]   desc.status          <120200>

  All network connections droped after that. System still unusable.

  Only after boot with old linux-image-3.16.0-46-generic my production
  mail server can work.

  It's a critical bug for me, can anybody help me?

  ethtool -i em1
  driver: igb
  version: 5.2.13-k
  firmware-version: 1.61, 0x80000cd5, 1.949.0
  bus-info: 0000:02:00.0
  supports-statistics: yes
  supports-test: yes
  supports-eeprom-access: yes
  supports-register-dump: yes
  supports-priv-flags: no

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