linux-kernel - Re: i915 screen corruption

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Message-ID: <20111122152711.0e7caea5@x220.fritz.box>
Date:	Tue, 22 Nov 2011 15:27:11 +0100
From:	Udo Steinberg <udo@...ervisor.org>
To:	<keithp@...thp.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	dri-devel@...ts.freedesktop.org
Subject: Re: i915 screen corruption

On Fri, 11 Nov 2011 23:30:18 +0100 Udo Steinberg (US) wrote:

US> On a Lenovo Thinkpad X220 with Gen6 (SNB) integrated graphics, I occasionally
US> get screen corruption under X. Every time this happens I'm seeing the
US> following in dmesg. This is a vanilla Linux 3.1 kernel.

Hi,

The problem just happened again. I have attached /debug/dri/0/i915_error_state.
The relevant dmesg output is below.

Cheers,

	- Udo

------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Not tainted 3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e005>] ? ring_write_tail+0x39/0x48
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff8121043a>] ? i915_gem_do_execbuffer.clone.8+0xc6d/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061c8 ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122ea8b>] ? gen6_ring_get_irq+0x79/0xbe
 [<ffffffff8120b00a>] ? i915_wait_request+0x176/0x3b9
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061c9 ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e98d>] ? gen6_ring_put_irq+0x66/0xa6
 [<ffffffff8120b174>] ? i915_wait_request+0x2e0/0x3b9
 [<ffffffff8104ce09>] ? wake_up_bit+0x23/0x23
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061ca ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e005>] ? ring_write_tail+0x39/0x48
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff8121043a>] ? i915_gem_do_execbuffer.clone.8+0xc6d/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061cb ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122ea8b>] ? gen6_ring_get_irq+0x79/0xbe
 [<ffffffff8120b00a>] ? i915_wait_request+0x176/0x3b9
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061cc ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e98d>] ? gen6_ring_put_irq+0x66/0xa6
 [<ffffffff8120b174>] ? i915_wait_request+0x2e0/0x3b9
 [<ffffffff8104ce09>] ? wake_up_bit+0x23/0x23
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061cd ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e005>] ? ring_write_tail+0x39/0x48
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff8121043a>] ? i915_gem_do_execbuffer.clone.8+0xc6d/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061ce ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122ea8b>] ? gen6_ring_get_irq+0x79/0xbe
 [<ffffffff8120b00a>] ? i915_wait_request+0x176/0x3b9
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061cf ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e98d>] ? gen6_ring_put_irq+0x66/0xa6
 [<ffffffff8120b174>] ? i915_wait_request+0x2e0/0x3b9
 [<ffffffff8104ce09>] ? wake_up_bit+0x23/0x23
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061d0 ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e005>] ? ring_write_tail+0x39/0x48
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff8121043a>] ? i915_gem_do_execbuffer.clone.8+0xc6d/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061d1 ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122ea8b>] ? gen6_ring_get_irq+0x79/0xbe
 [<ffffffff8120b00a>] ? i915_wait_request+0x176/0x3b9
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061d2 ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e98d>] ? gen6_ring_put_irq+0x66/0xa6
 [<ffffffff8120b174>] ? i915_wait_request+0x2e0/0x3b9
 [<ffffffff8104ce09>] ? wake_up_bit+0x23/0x23
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061d3 ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e005>] ? ring_write_tail+0x39/0x48
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff8121043a>] ? i915_gem_do_execbuffer.clone.8+0xc6d/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061d4 ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122ea8b>] ? gen6_ring_get_irq+0x79/0xbe
 [<ffffffff8120b00a>] ? i915_wait_request+0x176/0x3b9
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061d5 ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e98d>] ? gen6_ring_put_irq+0x66/0xa6
 [<ffffffff8120b174>] ? i915_wait_request+0x2e0/0x3b9
 [<ffffffff8104ce09>] ? wake_up_bit+0x23/0x23
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061d6 ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e005>] ? ring_write_tail+0x39/0x48
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff8121043a>] ? i915_gem_do_execbuffer.clone.8+0xc6d/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff81008a86>] ? fpu_finit+0xe/0x1d
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061d7 ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122ea8b>] ? gen6_ring_get_irq+0x79/0xbe
 [<ffffffff8120b00a>] ? i915_wait_request+0x176/0x3b9
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff81008a86>] ? fpu_finit+0xe/0x1d
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061d8 ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e98d>] ? gen6_ring_put_irq+0x66/0xa6
 [<ffffffff8120b174>] ? i915_wait_request+0x2e0/0x3b9
 [<ffffffff8104ce09>] ? wake_up_bit+0x23/0x23
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff81008a86>] ? fpu_finit+0xe/0x1d
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061d9 ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122e005>] ? ring_write_tail+0x39/0x48
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff8121043a>] ? i915_gem_do_execbuffer.clone.8+0xc6d/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff81165855>] ? copy_user_generic_unrolled+0x95/0xb0
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061da ]---
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/i915/i915_drv.c:387 __gen6_gt_wait_for_fifo+0x63/0x6e()
Hardware name: 4290W4H
Modules linked in: iwlagn [last unloaded: iwlagn]
Pid: 1693, comm: X Tainted: G        W   3.1.0 #1
Call Trace:
 [<ffffffff81036e2d>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff811fafe1>] ? __gen6_gt_wait_for_fifo+0x63/0x6e
 [<ffffffff8122ea8b>] ? gen6_ring_get_irq+0x79/0xbe
 [<ffffffff8120b00a>] ? i915_wait_request+0x176/0x3b9
 [<ffffffff8122fa6f>] ? blt_ring_flush+0xdb/0xe4
 [<ffffffff8120b2a6>] ? i915_gem_flush_ring+0x24/0xdc
 [<ffffffff81210548>] ? i915_gem_do_execbuffer.clone.8+0xd7b/0x11cf
 [<ffffffff8104fe71>] ? __hrtimer_start_range_ns+0x2c6/0x2d9
 [<ffffffff81210e27>] ? i915_gem_execbuffer2+0x12b/0x1ac
 [<ffffffff81165855>] ? copy_user_generic_unrolled+0x95/0xb0
 [<ffffffff811ea81d>] ? drm_ioctl+0x251/0x306
 [<ffffffff81210cfc>] ? i915_gem_execbuffer+0x360/0x360
 [<ffffffff812a9e7f>] ? input_event_to_user+0xe/0x1f
 [<ffffffff812ac12c>] ? evdev_read+0x179/0x19e
 [<ffffffff81008ba0>] ? init_fpu+0x10b/0x124
 [<ffffffff81008fa4>] ? check_for_xstate+0x1c/0x71
 [<ffffffff810b9dc1>] ? do_vfs_ioctl+0x404/0x445
 [<ffffffff81001c45>] ? sys_rt_sigreturn+0x196/0x1c5
 [<ffffffff810ac39d>] ? vfs_read+0x118/0x126
 [<ffffffff810b9e3e>] ? sys_ioctl+0x3c/0x5e
 [<ffffffff813bf1bb>] ? system_call_fastpath+0x16/0x1b
---[ end trace e2c97bffad4061db ]---
[drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
[drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
[drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 2105449 at 2105448, next 2105450)

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