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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 1475437

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/1475437

Title:
  kernel warning /build/linux-
  hzKv5F/linux-4.0.0/include/drm/ttm/ttm_bo_driver.h:855
  qxl_surface_id_alloc

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  ------------[ cut here ]------------
  WARNING: CPU: 0 PID: 712 at /build/linux-hzKv5F/linux-4.0.0/include/drm/ttm/ttm_bo_driver.h:855 qxl_surface_id_alloc+0x2e9/0x3b0 [qxl]()
  Modules linked in: cfg80211 binfmt_misc kvm_intel kvm crct10dif_pclmul snd_hda_codec_generic crc32_pclmul ghash_clmulni_intel snd_hda_intel snd
  aesni_intel snd_hda_codec aes_x86_64 snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event lrw gf128mul snd_rawmidi serio_raw glue_helper ablk_help
  q snd_seq_device qxl ttm drm_kms_helper snd_timer drm snd i2c_piix4 mac_hid pvpanic 8250_fintek soundcore parport_pc ppdev lp parport autofs4 p
  ta_acpi
  CPU: 0 PID: 712 Comm: Xorg Not tainted 4.0.0-4-generic #7-Ubuntu
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20150306_163512-brownie 04/01/2014
   ffffffffc0365668 ffff88007b4b3b68 ffffffff817d0fa0 0000000000000007
   0000000000000000 ffff88007b4b3ba8 ffffffff81075b5a ffff880062cb95e0
   ffff880068702000 0000000000000412 ffff880068702058 ffff88007a676000
  Call Trace:
   [<ffffffff817d0fa0>] dump_stack+0x45/0x57
   [<ffffffff81075b5a>] warn_slowpath_common+0x8a/0xc0
   [<ffffffff81075c4a>] warn_slowpath_null+0x1a/0x20
   [<ffffffffc03602f9>] qxl_surface_id_alloc+0x2e9/0x3b0 [qxl]
   [<ffffffffc035e9a4>] qxl_bo_check_id+0x34/0x50 [qxl]
   [<ffffffffc0362f63>] qxl_release_reserve_list+0xf3/0x120 [qxl]
   [<ffffffffc036261b>] qxl_process_single_command+0x54b/0x790 [qxl]
   [<ffffffffc036289f>] qxl_execbuffer_ioctl+0x3f/0xa0 [qxl]
   [<ffffffffc02b3b1f>] drm_ioctl+0x1df/0x680 [drm]
   [<ffffffff811acce0>] ? handle_mm_fault+0x330/0x560
   [<ffffffff81209910>] do_vfs_ioctl+0x2e0/0x4e0
   [<ffffffff810631b5>] ? trace_do_page_fault+0x45/0x100
   [<ffffffff81209b91>] SyS_ioctl+0x81/0xa0
   [<ffffffff817d7fcd>] system_call_fastpath+0x16/0x1b
  ---[ end trace d5efdc2555a18389 ]---

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