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[Bug 1354242] Missing required logs.

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Brad Figg <brad.figg@xxxxxxxxxxxxx>
Date: Fri, 08 Aug 2014 02:30:08 -0000
Reply-to: Bug 1354242 <1354242@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1354242

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1354242

Title:
   mellanox driver crash fix in leagcy EQ mode

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  
  1, reproduction steps:

  - ethtool eth0 rx 128
  - iperf -s
  - in iperf client side, run below:
      iperf -c IP_SRV -P128 -t 120
  - then mellanox driver crash:
  ------------[ cut here ]------------
  WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:264 dev_watchdog+0x2a8/0x2b4()
  NETDEV WATCHDOG: eth0 (mlx4_core): transmit queue 4 timed out
  Modules linked in:
  CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.13.11.4-mustang_sw_1.12.10-beta+ #30
  Call trace:
  [<ffffffc0000882f0>] dump_backtrace+0x0/0x12c
  [<ffffffc00008842c>] show_stack+0x10/0x1c
  [<ffffffc0006bfd6c>] dump_stack+0x74/0x94
  [<ffffffc0000956b8>] warn_slowpath_common+0x84/0xac
  [<ffffffc00009572c>] warn_slowpath_fmt+0x4c/0x58
  [<ffffffc0005c1dd4>] dev_watchdog+0x2a4/0x2b4
  [<ffffffc0000a08f0>] call_timer_fn.isra.33+0x24/0x80
  [<ffffffc0000a0ad0>] run_timer_softirq+0x184/0x1f4
  [<ffffffc000099c5c>] __do_softirq+0x198/0x208
  [<ffffffc000099fc0>] irq_exit+0x8c/0xc0
  [<ffffffc0000850ac>] handle_IRQ+0x5c/0xc8
  [<ffffffc00008128c>] gic_handle_irq+0x38/0x7c
  Exception stack(0xffffffc0009cbdf0 to 0xffffffc0009cbf10)
  bde0:                                     009c8000 ffffffc0 00a31300 ffffffc0
  be00: 009cbf30 ffffffc0 000855e0 ffffffc0 0037356e 00000000 00000000 00000000
  be20: fff87954 ffffffc7 00010000 00000000 a455f900 ffffffc7 00000000 00000000
  be40: 00a35000 ffffffc0 005e1080 ffffffc0 009d4c90 ffffffc0 009cbd40 ffffffc0
  be60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
  be80: 00000000 00000000 aadd05a0 0000007f 0058f434 ffffffc0 aade3c80 0000007f
  bea0: aabe8660 0000007f 009c8000 ffffffc0 00a31300 ffffffc0 00a278d8 ffffffc0
  bec0: 009c8000 ffffffc0 00a27022 ffffffc0 00000001 00000000 008cbd20 ffffffc0
  bee0: 006c9d70 ffffffc0 00080408 ffffffc0 00080200 00000040 009cbf30 ffffffc0
  bf00: 000855dc ffffffc0 009cbf30 ffffffc0
  [<ffffffc0000845a8>] el1_irq+0x68/0xc0
  [<ffffffc0000d1cbc>] cpu_startup_entry+0x100/0x14c
  [<ffffffc0006bb07c>] rest_init+0x6c/0x78
  [<ffffffc0009937d4>] start_kernel+0x340/0x358
  ---[ end trace a66d2f499386c240 ]---
  INFO: rcu_sched detected stalls on CPUs/tasks: { 4 5} (detected by 7, t=6002 jiffies, g=1924, c=1923, q=1316)
  Task dump for CPU 4:
  irqbalance      R  running task        0   999      1 0x00000000
  Call trace:
  [<ffffffc0000859b8>] __switch_to+0x74/0x8c
  [<ffffffc000091dac>] do_page_fault+0x224/0x378
  [<ffffffc000081100>] do_mem_abort+0x38/0x9c
  Exception stack(0xffffffc7c3ecbe30 to 0xffffffc7c3ecbf50)
  be20:                                     c3ecbe80 ffffffc7 00163f4c ffffffc0
  be40: c69e2f00 ffffffc7 a133f000 0000007f 00000000 00000000 a147db7c 0000007f
  be60: 60000000 00000000 00000015 00000000 ffffffff ffffffff a148625c 0000007f
  be80: fb6e3b70 0000007f 000849ec ffffffc0 00000008 00000000 a133f000 0000007f
  bea0: ffffffff ffffffff 3b215828 00000000 53e18915 00000000 00000008 00000000
  bec0: fb6e3ae0 0000007f 00000000 00000000 00000003 00000000 a133f000 0000007f
  bee0: 00000008 00000000 00000000 00000000 00000000 00000000 00000000 00000000
  bf00: 00000000 00000000 2f2f2f2f 302f2f2f 00000040 00000000 2e312dff 5e6f6c72
  bf20: 7f7f7f7f 7f7f7f7f 01010101 01010101 00000000 00000000 00000000 00000000
  bf40: 00000020 00000000 a15075a0 0000007f
  Task dump for CPU 5:
  swapper/5       R  running task        0     0      1 0x00010002
  Call trace:
  [<ffffffc0000859b8>] __switch_to+0x74/0x8c
  INFO: rcu_sched detected stalls on CPUs/tasks: { 4 5} (detected by 7, t=24007 jiffies, g=1924, c=1923, q=1404)
  Task dump for CPU 4:
  irqbalance      R  running task        0   999      1 0x00000000
  Call trace:
  [<ffffffc0000859b8>] __switch_to+0x74/0x8c
  [<ffffffc000091dac>] do_page_fault+0x224/0x378
  [<ffffffc000081100>] do_mem_abort+0x38/0x9c
  Exception stack(0xffffffc7c3ecbe30 to 0xffffffc7c3ecbf50)
  be20:                                     c3ecbe80 ffffffc7 00163f4c ffffffc0
  be40: c69e2f00 ffffffc7 a133f000 0000007f 00000000 00000000 a147db7c 0000007f
  be60: 60000000 00000000 00000015 00000000 ffffffff ffffffff a148625c 0000007f
  be80: fb6e3b70 0000007f 000849ec ffffffc0 00000008 00000000 a133f000 0000007f
  bea0: ffffffff ffffffff 3b215828 00000000 53e18915 00000000 00000008 00000000
  bec0: fb6e3ae0 0000007f 00000000 00000000 00000003 00000000 a133f000 0000007f
  bee0: 00000008 00000000 00000000 00000000 00000000 00000000 00000000 00000000
  bf00: 00000000 00000000 2f2f2f2f 302f2f2f 00000040 00000000 2e312dff 5e6f6c72
  bf20: 7f7f7f7f 7f7f7f7f 01010101 01010101 00000000 00000000 00000000 00000000
  bf40: 00000020 00000000 a15075a0 0000007f
  Task dump for CPU 5:
  swapper/5       R  running task        0     0      1 0x00010002
  Call trace:
  [<ffffffc0000859b8>] __switch_to+0x74/0x8c
  INFO: rcu_sched detected stalls on CPUs/tasks: { 4 5} (detected by 7, t=42012 jiffies, g=1924, c=1923, q=1553)
  Task dump for CPU 4:
  irqbalance      R  running task        0   999      1 0x00000002
  Call trace:
  [<ffffffc0000859b8>] __switch_to+0x74/0x8c
  [<ffffffc000091dac>] do_page_fault+0x224/0x378
  [<ffffffc000081100>] do_mem_abort+0x38/0x9c
  Exception stack(0xffffffc7c3ecbe30 to 0xffffffc7c3ecbf50)
  be20:                                     c3ecbe80 ffffffc7 00163f4c ffffffc0
  be40: c69e2f00 ffffffc7 a133f000 0000007f 00000000 00000000 a147db7c 0000007f
  be60: 60000000 00000000 00000015 00000000 ffffffff ffffffff a148625c 0000007f
  be80: fb6e3b70 0000007f 000849ec ffffffc0 00000008 00000000 a133f000 0000007f
  bea0: ffffffff ffffffff 3b215828 00000000 53e18915 00000000 00000008 00000000
  bec0: fb6e3ae0 0000007f 00000000 00000000 00000003 00000000 a133f000 0000007f
  bee0: 00000008 00000000 00000000 00000000 00000000 00000000 00000000 00000000
  bf00: 00000000 00000000 2f2f2f2f 302f2f2f 00000040 00000000 2e312dff 5e6f6c72
  bf20: 7f7f7f7f 7f7f7f7f 01010101 01010101 00000000 00000000 00000000 00000000
  bf40: 00000020 00000000 a15075a0 0000007f
  Task dump for CPU 5:
  swapper/5       R  running task        0     0      1 0x00010002
  Call trace:
  [<ffffffc0000859b8>] __switch_to+0x74/0x8c

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References

[Bug 1354242] [NEW] mellanox driver crash fix in leagcy EQ mode
From: Ming Lei, 2014-08-08