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[Eric Desrochers <eric.desrochers@xxxxxxxxxxxxx>]

The problem has been reported by few different peoples of the community
already.

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https://bugs.launchpad.net/bugs/1546320

Title:
  crash starting at kernel v3.13.0-72  in timer code

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Register %RAX is LIST_POISON2.

  [239837.578526] general protection fault: 0000 [#1] SMP
  ...
  [239837.664031] CPU: 4 PID: 0 Comm: swapper/4 Not tainted 3.13.0-74-generic #118-Ubuntu
  [239837.672997] Hardware name: XXXXXXXXXXXXXXXXXX
  [239837.685506] task: ffff881028dc6000 ti: ffff881028dce000 task.ti: ffff881028dce000
  [239837.694280] RIP: 0010:[<ffffffff810756a4>] [<ffffffff810756a4>] detach_if_pending+0x34/0xb0
  [239837.704179] RSP: 0018:ffff88103fa03d10 EFLAGS: 00010002
  [239837.710425] RAX: dead000000200200 RBX: ffffffffa01be040 RCX: 000000000000303e
  [239837.718778] RDX: ffff8810288906b8 RSI: ffff881028f60000 RDI: ffffffffa01be040
  [239837.727137] RBP: ffff88103fa03d30 R08: 0000000000000086 R09: ffff881028f88000
  [239837.735505] R10: 0000000000000002 R11: 0000000000000005 R12: ffffffffa01be040
  [239837.760360] R13: ffff881028f60000 R14: 0000000000000001 R15: 0000000000000001
  [239837.785862] FS: 0000000000000000(0000) GS:ffff88103fa00000(0000) knlGS:0000000000000000
  [239837.812540] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [239837.827508] CR2: 00000000033d4048 CR3: 0000000001c0e000 CR4: 00000000001407e0
  [239837.852880] Stack:
  [239837.863639] ffffffffa01be040 0000000000000000 ffff881028f60000 ffff882025639a00
  [239837.889101] ffff88103fa03d60 ffffffff81075766 0000000000000086 ffffffffa01be020
  [239837.914247] ffff88103fa03d98 0000000000000100 ffff88103fa03d88 ffffffff81082369
  [239837.939532] Call Trace:
  [239837.950648] <IRQ>
  [239837.952982]
  [239837.963021] [<ffffffff81075766>] del_timer+0x46/0x70
  [239837.974969] [<ffffffff81082369>] try_to_grab_pending+0xa9/0x160
  [239837.989674] [<ffffffff81082453>] mod_delayed_work_on+0x33/0x70
  [239838.003709] [<ffffffffa01bb3ba>] set_timeout+0x3a/0x40 [ib_addr]
  [239838.018469] [<ffffffffa01bb559>] netevent_callback+0x29/0x30 [ib_addr]
  [239838.033727] [<ffffffff8173125c>] notifier_call_chain+0x4c/0x70
  [239838.047561] [<ffffffff81634a60>] ? neigh_table_clear+0x120/0x120
  [239838.062010] [<ffffffff817312ba>] atomic_notifier_call_chain+0x1a/0x20
  [239838.076485] [<ffffffff8163100b>] call_netevent_notifiers+0x1b/0x20
  [239838.090371] [<ffffffff81634b21>] neigh_timer_handler+0xc1/0x2c0
  [239838.104354] [<ffffffff810745d6>] call_timer_fn+0x36/0x100
  [239838.117021] [<ffffffff81634a60>] ? neigh_table_clear+0x120/0x120
  [239838.131002] [<ffffffff8107556f>] run_timer_softirq+0x1ef/0x2f0
  [239838.143985] [<ffffffff8106cd2c>] __do_softirq+0xec/0x2c0
  [239838.156386] [<ffffffff8106d275>] irq_exit+0x105/0x110
  [239838.168325] [<ffffffff81737b15>] smp_apic_timer_interrupt+0x45/0x60
  [239838.181501] [<ffffffff8173649d>] apic_timer_interrupt+0x6d/0x80
  [239838.193978] <EOI>
  [239838.196317]
  [239838.203483] [<ffffffff815d65b2>] ? cpuidle_enter_state+0x52/0xc0
  [239838.214553] [<ffffffff815d66d9>] cpuidle_idle_call+0xb9/0x1f0
  [239838.226799] [<ffffffff8101d3ee>] arch_cpu_idle+0xe/0x30
  [239838.238745] [<ffffffff810bf475>] cpu_startup_entry+0xc5/0x290
  [239838.250792] [<ffffffff810415ed>] start_secondary+0x21d/0x2d0
  [239838.263165] Code: 89 e5 41 56 41 89 d6 41 55 41 54 49 89 fc 53 48 8b 17 48 85 d2 74 55 49 89 f5 0f 1f 44 00 00 49 8b 44 24 08 45 84 f6 48 89 42 08 <48> 89 10 74 08 49 c7 04 24 00 00 00 00 41 f6 44 24 18 01 48 b8
  [239838.301935] RIP [<ffffffff810756a4>] detach_if_pending+0x34/0xb0
  [239838.314036] RSP <ffff88103fa03d10>

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