linux-kernel - GTT full but LRU empty

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Message-ID: <497DFC8B.9040405@gmail.com>
Date:	Mon, 26 Jan 2009 19:10:19 +0100
From:	Jacek Luczak <difrost.kernel@...il.com>
To:	eric@...olt.net, LKML <linux-kernel@...r.kernel.org>
Subject: GTT full but LRU empty


Hi Eric,

Are those errors known?

[drm:i915_gem_object_bind_to_gtt] *ERROR* GTT full, but LRU list empty
[drm:i915_gem_object_pin] *ERROR* Failure to bind:
-12<3>[drm:i915_gem_evict_something] *ERROR* inactive empty 1 request empty 1
flushing empty 1
[drm:i915_gem_object_bind_to_gtt] *ERROR* GTT full, but LRU list empty
[drm:i915_gem_object_pin] *ERROR* Failure to bind:
-12<3>[drm:i915_gem_evict_something] *ERROR* inactive empty 1 request empty 1
flushing empty 1
[drm:i915_gem_object_bind_to_gtt] *ERROR* GTT full, but LRU list empty
[drm:i915_gem_object_pin] *ERROR* Failure to bind:
-12<3>[drm:i915_gem_execbuffer] *ERROR* Failed to pin buffers -12
[drm:i915_gem_object_bind_to_gtt] *ERROR* GTT full, but LRU list empty
[drm:i915_gem_object_pin] *ERROR* Failure to bind:
-12<3>[drm:i915_gem_evict_something] *ERROR* inactive empty 1 request empty 1
flushing empty 1
[drm:i915_gem_object_bind_to_gtt] *ERROR* GTT full, but LRU list empty
[drm:i915_gem_object_pin] *ERROR* Failure to bind:
-12<3>[drm:i915_gem_execbuffer] *ERROR* Failed to pin buffers -12

They appeared once and no more, but I've changed my configuration in between
(switched to UXA, removed IntelFB from kernel).

Also I've got those messages with KMS enabled, but AFAIK those are only
harmless_spamming:

Jan 25 12:01:49 difrost kernel: WARNING: at drivers/gpu/drm/drm_crtc.c:213
drm_mode_object_get+0x36/0x8e()
Jan 25 12:01:49 difrost kernel: Hardware name: AMILO Pro Edition V3505
Jan 25 12:01:49 difrost kernel: drm_mode_object_get called w/o mode_config lock
Jan 25 12:01:49 difrost kernel: Modules linked in:
Jan 25 12:01:49 difrost kernel: Pid: 1, comm: swapper Not tainted
2.6.29-rc2-00013-gf3b8436-dirty #3
Jan 25 12:01:49 difrost kernel: Call Trace:
Jan 25 12:01:49 difrost kernel:  [<c011f310>] warn_slowpath+0x80/0xb6
Jan 25 12:01:49 difrost kernel:  [<c011755c>] dequeue_task+0x60/0x6e
Jan 25 12:01:49 difrost kernel:  [<c033c038>] schedule+0x6e0/0x71c
Jan 25 12:01:49 difrost kernel:  [<c0126894>] lock_timer_base+0x19/0x35
Jan 25 12:01:49 difrost kernel:  [<c01268f4>] try_to_del_timer_sync+0x44/0x4a
Jan 25 12:01:49 difrost kernel:  [<c025c63a>] drm_mode_object_get+0x36/0x8e
Jan 25 12:01:49 difrost kernel:  [<c025c766>]
drm_mode_connector_update_edid_property+0xd4/0x144
Jan 25 12:01:49 difrost kernel:  [<c026d500>] intel_ddc_get_modes+0x24/0x3c
Jan 25 12:01:49 difrost kernel:  [<c026bcc9>] intel_lvds_init+0xe3/0x296
Jan 25 12:01:49 difrost kernel:  [<c026aadc>] intel_modeset_init+0x307/0x5ce
Jan 25 12:01:49 difrost kernel:  [<c026274f>] i915_driver_irq_postinstall+0xa8/0xac
Jan 25 12:01:49 difrost kernel:  [<c0261688>] i915_driver_load+0x6ef/0x73e
Jan 25 12:01:49 difrost kernel:  [<c0259560>] drm_get_dev+0x2be/0x358
Jan 25 12:01:49 difrost kernel:  [<c025552d>] drm_init+0x5a/0x89
Jan 25 12:01:49 difrost kernel:  [<c04574bd>] i915_init+0x0/0x43
Jan 25 12:01:49 difrost kernel:  [<c010112c>] _stext+0x44/0x108
Jan 25 12:01:49 difrost kernel:  [<c0142b38>] register_irq_proc+0x79/0x92
Jan 25 12:01:49 difrost kernel:  [<c0441297>] kernel_init+0x101/0x14f
Jan 25 12:01:49 difrost kernel:  [<c0441196>] kernel_init+0x0/0x14f
Jan 25 12:01:49 difrost kernel:  [<c01034db>] kernel_thread_helper+0x7/0x10
Jan 25 12:01:49 difrost kernel: ---[ end trace 1e62cbea2b78759c ]---

Some details:
	1) Kernel: 2.6.29-rc2-00013-gf3b8436-dirty (marked dirty due to not-yet-in-tree
XFS patch).
	2) xf86-video-intel: 2.6.1
	3) Xorg-server: 1.5.99.901
	4) Mesa: 7.3
	4) DRI2 enabled, now also UXA (with strange screen flickering effect).

-Jacek
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