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[Ming Lei <1469214@xxxxxxxxxxxxxxxxxx>]

Looks there are two kinds of translation fault from irqbalance:

1) happend in place_irq_in_node() which can reproduce in vivid package

2) the 2nd one happened in glib2, which  is built by myself, because
irqbalance can choose to use its own local glib if there isn't glib2 available,
and the glib2 does exist in my server in which I build irqbalance.

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Title:
  HP ProLiant m400 Server crashes with unhandled level 3 translation
  fault

Status in linux package in Ubuntu:
  Triaged

Bug description:
  Running stress-ng on a HP ProLiant m400 server can cause unhandled
  level 3 translations faults:

  use stress-ng from git://kernel.ubuntu.com/cking/stress-ng

  ./stress-ng --seq 0 -t 60 -v

  and after some time this trips the following:

  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922560] systemd-timesyn[481]: unhandled level 3 translation fault (7) at 0x7fa8ea6008, esr 0x92000007
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922561] pgd = ffffffcfb563f000
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922563] [7fa8ea6008] *pgd=0000004fb4f28003, *pud=0000004fb4f28003, *pmd=0000004fb4f38003, *pte=000000001d151c00
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922566]
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922569] CPU: 6 PID: 481 Comm: systemd-timesyn Not tainted 3.19.0-21-generic #21-Ubuntu
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922571] Hardware name: HP ProLiant m400 Server Cartridge (DT)
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922573] task: ffffffcfb4e3b100 ti: ffffffcfb4d2c000 task.ti: ffffffcfb4d2c000
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922588] PC is at 0x7fa8d81824
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922589] LR is at 0x7fa8e3b3e4
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922590] pc : [<0000007fa8d81824>] lr : [<0000007fa8e3b3e4>] pstate: 80000000
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922591] sp : 0000007ff120d660
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922592] x29: 0000007ff120d660 x28: 0000007fa8f1c000
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922594] x27: 0000007fa8f32084 x26: 0000007fa8f32000
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922595] x25: 0000007fa8f1d788 x24: 0000007fa8f1d888
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922597] x23: 0000000000000001 x22: 0000007fa8f1faa0
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922599] x21: 0000007ff120d7f0 x20: 0000007ff120d7d0
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922600] x19: 0000007fa8f31000 x18: 0000007fa8f1e000
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922602] x17: 0000007fa8e3b3b8 x16: 0000007fa8ea6000
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922603] x15: 003b9aca00000000 x14: 00219bbdd0000000
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922605] x13: ffffffffaa751223 x12: 0000000000000000
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922607] x11: 0101010101010101 x10: 7f7f7f7f7f7f7f7f
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922609] x9 : 37333c43484f5e46 x8 : 0000007ff120d818
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922610] x7 : 0000007ff120d8f0 x6 : 0000007ff120d828
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922612] x5 : ffffff80ffffffd0 x4 : 0000007ff120d8c0
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922613] x3 : 0000007ff120d7d0 x2 : 0000007fa8f1faa0
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922615] x1 : 0000000000000001 x0 : 0000000000000064
  Jun 26 14:01:54 ms10-34-proliant kernel: [150297.922616]

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