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[Bug 1492146] Re: igb Detected Tx Unit Hang

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** Description changed:

  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.
  
  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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https://bugs.launchpad.net/bugs/1492146

Title:
  igb Detected Tx Unit Hang

Status in linux-lts-utopic package in Ubuntu:
  New

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.

  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?

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References

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