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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1444003

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

** Tags added: trusty

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https://bugs.launchpad.net/bugs/1444003

Title:
  BUG: soft lockup - CPU#6 stuck for 22s! [systemd-udevd:166]

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Seeing a number of failed deployments on the SM15K:

  This is from console log for a failed deployment this morning:
  [ 3310.700695] Call Trace:^M
  [ 3310.700698] [<ffffffff81057180>] ? try_to_free_pmd_page+0x50/0x50^M
  [ 3310.700700] [<ffffffff8105709fff^M
  [ 3310.700707] [<ffffffff810590ed>] change_page_attr_set_clr+0x38d/0x4a0^M
  [ 3310.700709] [<ffffffffa020a000>] ? 0xffffffffa0209fff^M
  [ 3310.700711] [<ffffffff810596cf>] set_memory_ro+0x2f/0x40^M
  [ 3310.700714] [<ffffffff8171bad4>] set_section_ro_nx+0x3a/0x71^M
  [ 3310.700716] [<ffffffff810e25a8>] load_module+0x12c8/0x1b40^M
  [ 3310.700719] [<ffffffff810de040>] ? store_uevent+0x40/0x40^M
  [ 3310.700722] [<ffffffff810e2f96>] SyS_finit_module+0x86/0xb0^M
  [ 3310.700725] [<ffffffff8173263d>] system_call_fastpath+0x1a/0x1f^M
  [ 3310.700745] Code: 1d a9 29 00 3b 05 8f 90 c3 00 89 c2 0f 8d 25 fe ff ff 48 98 49 8b 4d 00 4p - CPU#2 stuck for 23s! [systemd-udevd:159]^M
  [ 3338.633651] Modules linked in: cryptd(+) e1000(+) ahci libahci^M
  [ 3338.633653] CPU: 2 PID: 159 Comm: systemd-udevd Not tainted 3.13.0-49-generic #81-Ubuntu^M
  [ 3338.633654] Hardware name: SeaMicro SM15000-64-CC-AA-1Ox1/AMD Server CRB, BIOS Estoc.3.72.19.0015 10/29/2012^M
  [ 3338.633655] task: ffff88022f361800 ti: ffff8800be95c000 task.ti: ffff8800be95c000^M
  [ 3338.633657] RIP: 0010:[<ffffffff810dc4ba>] [<ffffffff810dc4ba>] smp_call_function_many+0x26a/0x2d0^M
  [ 3338.633658] RSP: 0018:ffff8800be95db60 EFLAGS: 00000202^M
  [ 3338.633659] RAX: 0000000000000000 RBX: 000000000000ffff88023fc93fc8 R09: 0000000000000004^M
  [ 3338.633661] R10: ffff88023fc93fc8 R11: ffff880234259c28 R12: 000000000000061c^M
  [ 3338.633662] R13: ffff8802341caf80 R14: ffff8802342eb180 R15: 0000000000000000^M
  [ 3338.633663] FS: 00007f569e8ce880(0000) GS:ffff88023fc80000(0000) knlGS:0000000000000000^M
  [ 3338.633664] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033^M
  [ 3338.633665] CR2: 0000000002736138 CR3: 00000000be95b000 CR4: 00000000000407e0^M
  [ 3338.633666] Stack:^M
  [ 3338.633669] ffff88023fc93fe8 0000000000013f80 ffff8800be95dbe8 ffffffff8105c6e0^M
  [ 3338.633671] 0000010000000001 0000000000000012 ffffffff8105c6e0 fffffff8105c6e0>] ? rbt_memtype_copy_nth_element+0xa0/0xa0^M
  [ 3338.633680] [<ffffffff8105c6e0>] ? rbt_memtype_copy_nth_element+0xa0/0xa0^M
  [ 3338.633682] [<ffffffff810dc67d>] on_each_cpu+0x2d/0x60^M
  [ 3338.633685] [<ffffffff8105ccdd>] flush_tlb_kernel_range+0x6d/0x70^M
  [ 3338.633687] [<ffffffff81187555>] __purge_vmap_area_lazy+0x335/0x430^M
  [ 3338.633690] [<ffffffff811877b2>] vm_unmap_aliases+0x162/0x180^M
  [ 3338.633693] [<ffffffff81058e2e>] change_page_attr_set_clr+0xce/0x4a0^M
  [ 3338.633696] [<ffffffff81725ad1>] ? __schedule+0x381/0x7d0^M
  [ 3338.633699] [<ffffffff81059243>] set_memory_x+0x43/0x50^M
  [ 3338.633702] [<ff ? store_uevent+0x40/0x40^M
  [ 3338.633711] [<ffffffff810e2f96>] SyS_finit_module+0x86/0xb0^M
  [ 3338.633714] [<ffffffff8173263d>] system_call_fastpath+0x1a/0x1f^M
  [ 3338.633734] Code: 1d a9 29 00 3b 05 8f 90 c3 00 89 c2 0f 8d 25 fe ff ff 48 98 49 8b 4d 00 48 03 0c c5 20 37 d1 81 f6 41 20 01 74 cb 0f 1f 00 f3 90 <f6> 41 20 01 75 f8 eb be 0f b6 4d d0 48 8b 55 c0 44 89 ef 48 8b ^M
  [ 3338.701651] BUG: soft lockup - CPU#6 stuck for 22s! [systemd-udevd:166]^M
  [ 3338.701654] Modules linked in: cryptd(+) e1000(+) ahci libahci^M
  [ 3338.701655] CPU: 6 P^M

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