[Bug 81711] Thinkpad R51 reports [drm:i9xx_set_fifo_underrun_reporting] *ERROR* pipe A underrun

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=81711

--- Comment #5 from Stuart Foster <smf.linux at ntlworld.com> ---
Created attachment 150551
  --> https://bugzilla.kernel.org/attachment.cgi?id=150551&action=edit
linux-3.17-rc5 dmesg output

With rc5 in addition to the fifo under run there is a stacktrace being
generated. They of course may not be related.

[   38.244822] [drm:i9xx_check_fifo_underruns] *ERROR* pipe B underrun
[   38.258719] [drm:i9xx_set_fifo_underrun_reporting] *ERROR* pipe A underrun
[   38.352009] [drm:i9xx_set_fifo_underrun_reporting] *ERROR* pipe A underrun
[   38.398655] [drm:i9xx_set_fifo_underrun_reporting] *ERROR* pipe A underrun
[   40.107762] [drm:i8xx_irq_handler] *ERROR* pipe B underrun
[   40.439655] [drm:i9xx_set_fifo_underrun_reporting] *ERROR* pipe A underrun
[   40.482330] [drm:i9xx_set_fifo_underrun_reporting] *ERROR* pipe A underrun
[   40.525655] [drm:i9xx_set_fifo_underrun_reporting] *ERROR* pipe A underrun
[   85.069498] ------------[ cut here ]------------
[   85.069517] WARNING: CPU: 0 PID: 1935 at
drivers/gpu/drm/i915/i915_gem.c:4457 i915_gem_free_object+0x355/0x370()
[   85.069520] Modules linked in: nfsv3 nfs fscache nfsd lockd sunrpc af_packet
microcode sha256_generic cbc floppy ac e100 thermal 8250_pci m
ii snd_intel8x0 snd_ac97_codec 8250 battery i2c_i801 sg serial_core psmouse
ac97_bus rng_core ehci_pci dm_crypt dm_mod usb_storage pl2303 usbs
erial snd_pcm_oss snd_pcm snd_timer snd_mixer_oss acpi_cpufreq processor wmi
hdaps input_polldev thinkpad_acpi hwmon snd soundcore nvram ohci_
hcd uhci_hcd ehci_hcd usbcore usb_common unix
[   85.069596] CPU: 0 PID: 1935 Comm: X Not tainted 3.17.0-rc5 #1
[   85.069599] Hardware name: IBM 2889SG1/2889SG1, BIOS 1VET71WW (1.29 )
12/01/2006
[   85.069602]  c14761ca c1034f4f c1575310 00000000 0000078f c15aa51c 00001169
c128e935
[   85.069612]  c128e935 c1c76b00 00000000 c1c76b68 c1c76b34 c1035019 00000009
00000000
[   85.069621]  c128e935 f6377980 f6314c00 f6001e00 f6ed4ee0 00000000 c1ce0000
c1c76b00
[   85.069631] Call Trace:
[   85.069640]  [<c14761ca>] ? dump_stack+0xa/0x13
[   85.069648]  [<c1034f4f>] ? warn_slowpath_common+0x7f/0xb0
[   85.069655]  [<c128e935>] ? i915_gem_free_object+0x355/0x370
[   85.069661]  [<c128e935>] ? i915_gem_free_object+0x355/0x370
[   85.069666]  [<c1035019>] ? warn_slowpath_null+0x19/0x20
[   85.069672]  [<c128e935>] ? i915_gem_free_object+0x355/0x370
[   85.069682]  [<c1252a95>] ? drm_gem_object_free+0x15/0x20
[   85.069689]  [<c1252d54>] ?
drm_gem_object_handle_unreference_unlocked+0xa4/0xd0
[   85.069695]  [<c1252dfb>] ? drm_gem_handle_delete+0x7b/0xc0
[   85.069700]  [<c1253590>] ? drm_gem_handle_create+0x30/0x30
[   85.069705]  [<c1253f3d>] ? drm_ioctl+0x19d/0x5c0
[   85.069711]  [<c1253590>] ? drm_gem_handle_create+0x30/0x30
[   85.069718]  [<c10a9e22>] ? unmap_single_vma+0x3e2/0x510
[   85.069725]  [<c1096fc7>] ? lru_add_drain+0x7/0x10
[   85.069732]  [<c10b79b0>] ? free_pages_and_swap_cache+0x10/0x90
[   85.069738]  [<c10a89bb>] ? tlb_flush_mmu_free+0x1b/0x30
[   85.069743]  [<c10a91a9>] ? tlb_finish_mmu+0x9/0x40
[   85.069749]  [<c10adc58>] ? unmap_region+0x98/0xe0
[   85.069754]  [<c1253da0>] ? drm_copy_field+0x70/0x70
[   85.069759]  [<c10d717c>] ? do_vfs_ioctl+0x33c/0x4f0
[   85.069765]  [<c1252c7a>] ? drm_gem_vm_close+0x2a/0x60
[   85.069771]  [<c10adcde>] ? remove_vma+0x3e/0x50
[   85.069777]  [<c10adcde>] ? remove_vma+0x3e/0x50
[   85.069783]  [<c10afb00>] ? do_munmap+0x1f0/0x2d0
[   85.069788]  [<c10d7373>] ? SyS_ioctl+0x43/0x80
[   85.069796]  [<c147af0b>] ? sysenter_do_call+0x12/0x12
[   85.069800] ---[ end trace 88b45625225c3595 ]---

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