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Date: Fri, 1 Jun 2012 14:21:25 +0800
From: Dave Young <dyoung@redhat.com>
To: keithp@keithp.com, dri-devel@lists.freedesktop.org,
        linux-kernel@vger.kernel.org
Subject: WARNING: at drivers/gpu/drm/i915/i915_drv.c:440
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Today I got a lot i915 warnings on a thinkpad t400, here is the something copied from syslog:
[Known issue?]

Jun  1 13:31:13 localhost kernel: [15935.915986] ------------[ cut here ]------------
Jun  1 13:31:13 localhost kernel: [15935.916009] WARNING: at drivers/gpu/drm/i915/i915_drv.c:440 __gen6_gt_wait_for_fifo+0x74/0x89()
Jun  1 13:31:13 localhost kernel: [15935.916017] Hardware name: 4236NUC
Jun  1 13:31:13 localhost kernel: [15935.916022] Modules linked in: fuse rfcomm bnep sunrpc vhost_net macvtap macvlan tun kvm_intel kvm btusb bluetooth uvcvideo videobuf2_core videodev media videobuf2_vmalloc videobuf2_memops pcspkr iwlwifi mac80211 cfg80211 e1000e wmi thinkpad_acpi rfkill firewire_ohci firewire_core crc_itu_t sdhci_pci [last unloaded: scsi_wait_scan]
Jun  1 13:31:13 localhost kernel: [15935.916125] Pid: 8026, comm: Xorg Not tainted 3.4.0 #284
Jun  1 13:31:13 localhost kernel: [15935.916131] Call Trace:
Jun  1 13:31:13 localhost kernel: [15935.916146]  [<ffffffff810333a7>] warn_slowpath_common+0x80/0x98
Jun  1 13:31:13 localhost kernel: [15935.916157]  [<ffffffff810333d4>] warn_slowpath_null+0x15/0x17
Jun  1 13:31:13 localhost kernel: [15935.916168]  [<ffffffff81358163>] __gen6_gt_wait_for_fifo+0x74/0x89
Jun  1 13:31:13 localhost kernel: [15935.916178]  [<ffffffff8135852b>] i915_write32+0x4c/0x70
Jun  1 13:31:13 localhost kernel: [15935.916189]  [<ffffffff8138b506>] ? gen6_ring_put_irq+0x31/0x8a
Jun  1 13:31:13 localhost kernel: [15935.916199]  [<ffffffff8138b538>] gen6_ring_put_irq+0x63/0x8a
Jun  1 13:31:13 localhost kernel: [15935.916209]  [<ffffffff8138b59c>] gen6_render_ring_put_irq+0x13/0x15
Jun  1 13:31:13 localhost kernel: [15935.916222]  [<ffffffff81367214>] i915_wait_request+0x2fd/0x3b3
Jun  1 13:31:13 localhost kernel: [15935.916235]  [<ffffffff81051c59>] ? wake_up_bit+0x25/0x25
Jun  1 13:31:13 localhost kernel: [15935.916248]  [<ffffffff81367368>] ? i915_gem_flush_ring+0x6b/0x139
Jun  1 13:31:13 localhost kernel: [15935.916260]  [<ffffffff813672fb>] i915_gem_object_wait_rendering+0x31/0x33
Jun  1 13:31:13 localhost kernel: [15935.916271]  [<ffffffff8136c81f>] i915_gem_do_execbuffer.clone.6+0xce7/0x129f
Jun  1 13:31:13 localhost kernel: [15935.916284]  [<ffffffff8107ab6b>] ? __lock_acquire+0xe32/0xe41
Jun  1 13:31:13 localhost kernel: [15935.916294]  [<ffffffff8107ac1a>] ? lock_release_non_nested+0xa0/0x24f
Jun  1 13:31:13 localhost kernel: [15935.916306]  [<ffffffff8136d155>] i915_gem_execbuffer2+0x114/0x183
Jun  1 13:31:13 localhost kernel: [15935.916321]  [<ffffffff810e7ec4>] ? might_fault+0x89/0x90
Jun  1 13:31:13 localhost kernel: [15935.916334]  [<ffffffff81343623>] drm_ioctl+0x2f1/0x3d3
Jun  1 13:31:13 localhost kernel: [15935.916345]  [<ffffffff810e7e7b>] ? might_fault+0x40/0x90
Jun  1 13:31:13 localhost kernel: [15935.916355]  [<ffffffff8136d041>] ? i915_gem_execbuffer+0x26a/0x26a
Jun  1 13:31:13 localhost kernel: [15935.916366]  [<ffffffff810e7e7b>] ? might_fault+0x40/0x90
Jun  1 13:31:13 localhost kernel: [15935.916378]  [<ffffffff8100add4>] ? check_for_xstate+0x2f/0x8a
Jun  1 13:31:13 localhost kernel: [15935.916391]  [<ffffffff8111c5cc>] do_vfs_ioctl+0x47d/0x4bc
Jun  1 13:31:13 localhost kernel: [15935.916405]  [<ffffffff81044a98>] ? do_sigaltstack+0xaf/0x14e
Jun  1 13:31:13 localhost kernel: [15935.916417]  [<ffffffff815e0255>] ? retint_swapgs+0x13/0x1b
Jun  1 13:31:13 localhost kernel: [15935.916430]  [<ffffffff8110f313>] ? fget_light+0x3d/0x9c
Jun  1 13:31:13 localhost kernel: [15935.916441]  [<ffffffff8111c65c>] sys_ioctl+0x51/0x75
Jun  1 13:31:13 localhost kernel: [15935.916452]  [<ffffffff815e677d>] system_call_fastpath+0x1a/0x1f
Jun  1 13:31:13 localhost kernel: [15935.916460] ---[ end trace 93dc2a59f9772003 ]---
Jun  1 13:31:13 localhost kernel: [15935.921817] ------------[ cut here ]------------
Jun  1 13:31:13 localhost kernel: [15935.921829] WARNING: at drivers/gpu/drm/i915/i915_drv.c:440 __gen6_gt_wait_for_fifo+0x74/0x89()
Jun  1 13:31:13 localhost kernel: [15935.921836] Hardware name: 4236NUC
Jun  1 13:31:13 localhost kernel: [15935.921840] Modules linked in: fuse rfcomm bnep sunrpc vhost_net macvtap macvlan tun kvm_intel kvm btusb bluetooth uvcvideo videobuf2_core videodev media videobuf2_vmalloc videobuf2_memops pcspkr iwlwifi mac80211 cfg80211 e1000e wmi thinkpad_acpi rfkill firewire_ohci firewire_core crc_itu_t sdhci_pci [last unloaded: scsi_wait_scan]
Jun  1 13:31:13 localhost kernel: [15935.921931] Pid: 8026, comm: Xorg Tainted: G        W    3.4.0 #284
Jun  1 13:31:13 localhost kernel: [15935.921937] Call Trace:
Jun  1 13:31:13 localhost kernel: [15935.921947]  [<ffffffff810333a7>] warn_slowpath_common+0x80/0x98
Jun  1 13:31:13 localhost kernel: [15935.921956]  [<ffffffff810333d4>] warn_slowpath_null+0x15/0x17
Jun  1 13:31:13 localhost kernel: [15935.921966]  [<ffffffff81358163>] __gen6_gt_wait_for_fifo+0x74/0x89
Jun  1 13:31:13 localhost kernel: [15935.921975]  [<ffffffff8135852b>] i915_write32+0x4c/0x70
Jun  1 13:31:13 localhost kernel: [15935.921984]  [<ffffffff8138b1c3>] ring_write_tail+0x1c/0x1e
Jun  1 13:31:13 localhost kernel: [15935.921994]  [<ffffffff8138c446>] intel_ring_advance+0x18/0x1a
Jun  1 13:31:13 localhost kernel: [15935.922003]  [<ffffffff8138c5a2>] blt_ring_flush+0x66/0x70
Jun  1 13:31:13 localhost kernel: [15935.922015]  [<ffffffff81367368>] i915_gem_flush_ring+0x6b/0x139
Jun  1 13:31:13 localhost kernel: [15935.922026]  [<ffffffff8136c716>] i915_gem_do_execbuffer.clone.6+0xbde/0x129f
Jun  1 13:31:13 localhost kernel: [15935.922037]  [<ffffffff8107ab6b>] ? __lock_acquire+0xe32/0xe41
Jun  1 13:31:13 localhost kernel: [15935.922047]  [<ffffffff8107ac1a>] ? lock_release_non_nested+0xa0/0x24f
Jun  1 13:31:13 localhost kernel: [15935.922058]  [<ffffffff8136d155>] i915_gem_execbuffer2+0x114/0x183
Jun  1 13:31:13 localhost kernel: [15935.922070]  [<ffffffff810e7ec4>] ? might_fault+0x89/0x90
Jun  1 13:31:13 localhost kernel: [15935.922080]  [<ffffffff81343623>] drm_ioctl+0x2f1/0x3d3
Jun  1 13:31:13 localhost kernel: [15935.922091]  [<ffffffff810e7e7b>] ? might_fault+0x40/0x90
Jun  1 13:31:13 localhost kernel: [15935.922100]  [<ffffffff8136d041>] ? i915_gem_execbuffer+0x26a/0x26a
Jun  1 13:31:13 localhost kernel: [15935.922112]  [<ffffffff810e7e7b>] ? might_fault+0x40/0x90
Jun  1 13:31:13 localhost kernel: [15935.922121]  [<ffffffff8100add4>] ? check_for_xstate+0x2f/0x8a
Jun  1 13:31:13 localhost kernel: [15935.922133]  [<ffffffff8111c5cc>] do_vfs_ioctl+0x47d/0x4bc
Jun  1 13:31:13 localhost kernel: [15935.922145]  [<ffffffff81044a98>] ? do_sigaltstack+0xaf/0x14e
Jun  1 13:31:13 localhost kernel: [15935.922154]  [<ffffffff815e0255>] ? retint_swapgs+0x13/0x1b
Jun  1 13:31:13 localhost kernel: [15935.922165]  [<ffffffff8110f313>] ? fget_light+0x3d/0x9c
Jun  1 13:31:13 localhost kernel: [15935.922176]  [<ffffffff8111c65c>] sys_ioctl+0x51/0x75
Jun  1 13:31:13 localhost kernel: [15935.922185]  [<ffffffff815e677d>] system_call_fastpath+0x1a/0x1f
Jun  1 13:31:13 localhost kernel: [15935.922193] ---[ end trace 93dc2a59f9772004 ]---
Jun  1 13:31:13 localhost kernel: [15935.928465] ------------[ cut here ]------------
Jun  1 13:31:13 localhost kernel: [15935.928476] WARNING: at drivers/gpu/drm/i915/i915_drv.c:440 __gen6_gt_wait_for_fifo+0x74/0x89()
Jun  1 13:31:13 localhost kernel: [15935.928482] Hardware name: 4236NUC
Jun  1 13:31:13 localhost kernel: [15935.928486] Modules linked in: fuse rfcomm bnep sunrpc vhost_net macvtap macvlan tun kvm_intel kvm btusb bluetooth uvcvideo videobuf2_core videodev media videobuf2_vmalloc videobuf2_memops pcspkr iwlwifi mac80211 cfg80211 e1000e wmi thinkpad_acpi rfkill firewire_ohci firewire_core crc_itu_t sdhci_pci [last unloaded: scsi_wait_scan]
Jun  1 13:31:13 localhost kernel: [15935.928577] Pid: 8026, comm: Xorg Tainted: G        W    3.4.0 #284
Jun  1 13:31:13 localhost kernel: [15935.928583] Call Trace:
Jun  1 13:31:13 localhost kernel: [15935.928592]  [<ffffffff810333a7>] warn_slowpath_common+0x80/0x98
Jun  1 13:31:13 localhost kernel: [15935.928602]  [<ffffffff810333d4>] warn_slowpath_null+0x15/0x17
Jun  1 13:31:13 localhost kernel: [15935.928612]  [<ffffffff81358163>] __gen6_gt_wait_for_fifo+0x74/0x89
Jun  1 13:31:13 localhost kernel: [15935.928622]  [<ffffffff8135852b>] i915_write32+0x4c/0x70
Jun  1 13:31:13 localhost kernel: [15935.928631]  [<ffffffff8138b85a>] ? gen6_ring_get_irq+0x44/0x9a
Jun  1 13:31:13 localhost kernel: [15935.928641]  [<ffffffff8138b88f>] gen6_ring_get_irq+0x79/0x9a
Jun  1 13:31:13 localhost kernel: [15935.928651]  [<ffffffff8138b8ed>] gen6_render_ring_get_irq+0x13/0x15
Jun  1 13:31:13 localhost kernel: [15935.928663]  [<ffffffff813670ac>] i915_wait_request+0x195/0x3b3
Jun  1 13:31:13 localhost kernel: [15935.928675]  [<ffffffff81367368>] ? i915_gem_flush_ring+0x6b/0x139
Jun  1 13:31:13 localhost kernel: [15935.928688]  [<ffffffff813672fb>] i915_gem_object_wait_rendering+0x31/0x33
Jun  1 13:31:13 localhost kernel: [15935.928698]  [<ffffffff8136c81f>] i915_gem_do_execbuffer.clone.6+0xce7/0x129f
Jun  1 13:31:13 localhost kernel: [15935.928709]  [<ffffffff8107ab6b>] ? __lock_acquire+0xe32/0xe41
Jun  1 13:31:13 localhost kernel: [15935.928719]  [<ffffffff8107ac1a>] ? lock_release_non_nested+0xa0/0x24f
Jun  1 13:31:13 localhost kernel: [15935.928731]  [<ffffffff8136d155>] i915_gem_execbuffer2+0x114/0x183
Jun  1 13:31:13 localhost kernel: [15935.928742]  [<ffffffff810e7ec4>] ? might_fault+0x89/0x90
Jun  1 13:31:13 localhost kernel: [15935.928752]  [<ffffffff81343623>] drm_ioctl+0x2f1/0x3d3
Jun  1 13:31:13 localhost kernel: [15935.928764]  [<ffffffff810e7e7b>] ? might_fault+0x40/0x90
Jun  1 13:31:13 localhost kernel: [15935.928773]  [<ffffffff8136d041>] ? i915_gem_execbuffer+0x26a/0x26a
Jun  1 13:31:13 localhost kernel: [15935.928785]  [<ffffffff810e7e7b>] ? might_fault+0x40/0x90
Jun  1 13:31:13 localhost kernel: [15935.928794]  [<ffffffff8100add4>] ? check_for_xstate+0x2f/0x8a
Jun  1 13:31:13 localhost kernel: [15935.928806]  [<ffffffff8111c5cc>] do_vfs_ioctl+0x47d/0x4bc
Jun  1 13:31:13 localhost kernel: [15935.928818]  [<ffffffff81044a98>] ? do_sigaltstack+0xaf/0x14e
Jun  1 13:31:13 localhost kernel: [15935.928828]  [<ffffffff815e0255>] ? retint_swapgs+0x13/0x1b
Jun  1 13:31:13 localhost kernel: [15935.928838]  [<ffffffff8110f313>] ? fget_light+0x3d/0x9c
Jun  1 13:31:13 localhost kernel: [15935.928850]  [<ffffffff8111c65c>] sys_ioctl+0x51/0x75
Jun  1 13:31:13 localhost kernel: [15935.928859]  [<ffffffff815e677d>] system_call_fastpath+0x1a/0x1f
Jun  1 13:31:13 localhost kernel: [15935.928866] ---[ end trace 93dc2a59f9772005 ]---
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