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

[Vinson Lee]

------------[ 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 ]---

[Brad Figg (brad-figg)]

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.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.2 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-rc3-unstable/

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]