Comment 2 for bug 1094173

Created attachment 72086
dmesg from 2012-12-24 occurrence

I use Ubuntu's compiz-based Unity desktop. Occasionally, compiz will terminate with

  intel_do_flush_locked failed: Device or resource busy

If I then attempt to restart compiz, it initially starts up successfully, but if I "use" it a little (e.g. if I open a new window or move an existing window around), then within a second or so it terminates again with the same error. Every attempt to restart compiz fails in this way, and it continues to fail even if I restart the xserver. However, once I reboot the system, compiz runs normally again.

I'm attaching dmesg output, Xorg log, compiz stderr+stdout with LIBGL_DEBUG=verbose, and intel_reg_dumper output. dmesg contains interesting-looking stack traces, the rest looks unenlightening.

System environment:
-- chipset: GM965
-- system architecture: x86_64
-- xf86-video-intel: 2.20.9 (Ubuntu package version 2:2.20.9-0ubuntu2)
-- xserver: 1.13.0 (Ubuntu package version 2:1.13.0-0ubuntu6.1)
-- mesa: 9.0 (Ubuntu package version 9.0-0ubuntu1)
-- libdrm: 2.4.39 (Ubuntu package version 2.4.39-0ubuntu)
-- kernel: 3.5.? (Ubuntu package version 3.5.0-21-generic)
-- Linux distribution: Ubuntu 12.10
-- Machine or mobo model: Lenovo ThinkPad R61 7733A82
-- Display connector: internal LVDS

Here's the interesting-looking dmesg stacktrace:

  [210169.687137] ------------[ cut here ]------------
  [210169.687186] WARNING: at /build/buildd/linux-3.5.0/drivers/gpu/drm/i915/i915
  _gem.c:3047 i915_gem_object_pin+0x15d/0x1b0 [i915]()
  [210169.687189] Hardware name: 7733A82
  [210169.687190] Modules linked in: hid_generic usbhid hid mmc_block usblp snd_seq_dummy snd_hrtimer nls_iso8859_1 cdc_ether cdc_phonet usbnet phonet cdc_acm usb_storage pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) deflate zlib_deflate twofish_generic ctr twofish_x86_64_3way twofish_x86_64 twofish_common camellia_generic camellia_x86_64 serpent_sse2_x86_64 cryptd lrw serpent_generic xts gf128mul blowfish_generic blowfish_x86_64 blowfish_common cast5 nfsd des_generic xcbc nfs rmd160 sha512_generic crypto_null af_key lockd xfrm_algo fscache auth_rpcgss bnep nfs_acl rfcomm parport_pc sunrpc bluetooth ppdev binfmt_misc dm_crypt arc4 snd_hda_codec_analog snd_hda_intel joydev snd_hda_codec coretemp thinkpad_acpi snd_hwdep snd_pcm ath5k r852 kvm_intel snd_seq_midi sm_common snd_rawmidi nand ath snd_seq_midi_event nand_ids snd_seq mtd kvm nand_bch snd_timer tp_smapi(O) bch r592 thinkpad_ec(O) mac80211 snd_seq_device pcmcia firewire_sbp2 memstick nand_ecc psmouse cfg80211 yenta_socket dm_multipath pcmcia_rsrc snd pcmcia_core scsi_dh snd_page_alloc microcode mac_hid soundcore serio_raw lp nvram lpc_ich tpm_tis parport sdhci_pci sdhci firewire_ohci firewire_core crc_itu_t i915 drm_kms_helper drm i2c_algo_bit e1000e video wmi
  [210169.687280] Pid: 2911, comm: compiz Tainted: G O 3.5.0-21-generic #32-Ubuntu
  [210169.687282] Call Trace:
  [210169.687290] [<ffffffff81051c1f>] warn_slowpath_common+0x7f/0xc0
  [210169.687294] [<ffffffff81051c7a>] warn_slowpath_null+0x1a/0x20
  [210169.687308] [<ffffffffa00da93d>] i915_gem_object_pin+0x15d/0x1b0 [i915]
  [210169.687329] [<ffffffffa006094b>] ? drm_mm_put_block+0x5b/0x80 [drm]
  [210169.687343] [<ffffffffa00dd530>] pin_and_fence_object.isra.5+0xa0/0x140 [i915]
  [210169.687357] [<ffffffffa00dd796>] i915_gem_execbuffer_reserve.isra.6+0x1c6/0x420 [i915]
  [210169.687372] [<ffffffffa00de027>] i915_gem_do_execbuffer.isra.9+0x5a7/0x1450 [i915]
  [210169.687377] [<ffffffff8141372b>] ? intel_gtt_chipset_flush+0x1b/0x20
  [210169.687391] [<ffffffffa00d942f>] ? i915_gem_shmem_pwrite.isra.25+0x34f/0x530 [i915]
  [210169.687405] [<ffffffffa00df3ac>] ? i915_gem_execbuffer2+0x5c/0x290 [i915]
  [210169.687419] [<ffffffffa00df3ac>] ? i915_gem_execbuffer2+0x5c/0x290 [i915]
  [210169.687434] [<ffffffffa00df401>] i915_gem_execbuffer2+0xb1/0x290 [i915]
  [210169.687446] [<ffffffffa00556d3>] drm_ioctl+0x4d3/0x580 [drm]
  [210169.687461] [<ffffffffa00df350>] ? i915_gem_execbuffer+0x480/0x480 [i915]
  [210169.687466] [<ffffffff8155ef7c>] ? sys_recvfrom+0x12c/0x170
  [210169.687470] [<ffffffff8108a89f>] ? __dequeue_entity+0x2f/0x50
  [210169.687474] [<ffffffff81193bd9>] do_vfs_ioctl+0x99/0x590
  [210169.687479] [<ffffffff8168207f>] ? __schedule+0x3cf/0x7c0
  [210169.687483] [<ffffffff81194169>] sys_ioctl+0x99/0xa0
  [210169.687487] [<ffffffff8168b969>] system_call_fastpath+0x16/0x1b
  [210169.687490] ---[ end trace 26e0b7909e6d35b8 ]---
  [210186.317236] ------------[ cut here ]------------