linux-kernel - pipe_off wait timed out

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Date:	Tue, 21 May 2013 19:01:08 -0400
From:	Dave Jones <davej@...hat.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Cc:	intel-gfx@...ts.freedesktop.org
Subject: pipe_off wait timed out

This is new to me as of 3.10-rc2.


WARNING: at drivers/gpu/drm/i915/intel_display.c:997 intel_wait_for_pipe_off+0x194/0x1a0 [i915]()
pipe_off wait timed out
Modules linked in: ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat xt_LOG xt_limit ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter nf_conntrack_ipv4 nf_defrag_ipv4 ip6_tables xt_conntrack nf_conntrack microcode pcspkr r8169 mii nfsd auth_rpcgss nfs_acl lockd sunrpc i915 video backlight i2c_algo_bit drm_kms_helper drm
CPU: 3 PID: 1414 Comm: kworker/3:1 Not tainted 3.10.0-rc2+ #3
Hardware name:                  /D510MO, BIOS MOPNV10J.86A.0175.2010.0308.0620 03/08/2010
Workqueue: events console_callback
 ffffffffa00d1c08 ffff8800753c7988 ffffffff8151fd9f ffff8800753c79c8
 ffffffff8103ca8b 00000000000008dd ffff880076738000 000000000000031f
 0000000000001fff 0000000000071000 0000000100086e1b ffff8800753c7a28
Call Trace:
 [<ffffffff8151fd9f>] dump_stack+0x19/0x1b
 [<ffffffff8103ca8b>] warn_slowpath_common+0x6b/0xa0
 [<ffffffff8103cb61>] warn_slowpath_fmt+0x41/0x50
 [<ffffffffa008d414>] intel_wait_for_pipe_off+0x194/0x1a0 [i915]
 [<ffffffffa008d5a5>] intel_disable_pipe+0x185/0x210 [i915]
 [<ffffffffa008dcef>] i9xx_crtc_disable+0xcf/0x230 [i915]
 [<ffffffffa009245f>] intel_crtc_update_dpms+0x6f/0xa0 [i915]
 [<ffffffffa0092515>] intel_encoder_dpms+0x15/0x30 [i915]
 [<ffffffffa0097207>] intel_connector_dpms+0x37/0x70 [i915]
 [<ffffffffa00520b0>] drm_fb_helper_dpms.isra.17+0xc0/0x110 [drm_kms_helper]
 [<ffffffffa0052131>] drm_fb_helper_blank+0x31/0x80 [drm_kms_helper]
 [<ffffffff812a6f51>] fb_blank+0x51/0xc0
 [<ffffffff812b5c3b>] fbcon_blank+0x22b/0x2e0
 [<ffffffff81526d95>] ? _raw_spin_unlock_irqrestore+0x65/0x80
 [<ffffffff8109a475>] ? trace_hardirqs_on_caller+0x105/0x1d0
 [<ffffffff8109a54d>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffff81526d6d>] ? _raw_spin_unlock_irqrestore+0x3d/0x80
 [<ffffffff8104b3c6>] ? try_to_del_timer_sync+0x56/0x70
 [<ffffffff8104b48a>] ? del_timer_sync+0xaa/0xd0
 [<ffffffff8104b3e0>] ? try_to_del_timer_sync+0x70/0x70
 [<ffffffff81324618>] do_blank_screen+0x1d8/0x280
 [<ffffffff813269bf>] console_callback+0x5f/0x150
 [<ffffffff8105a7f1>] process_one_work+0x1f1/0x490
 [<ffffffff8105a78c>] ? process_one_work+0x18c/0x490
 [<ffffffff8105aef3>] worker_thread+0x113/0x370
 [<ffffffff8105ade0>] ? rescuer_thread+0x310/0x310
 [<ffffffff81062798>] kthread+0xe8/0xf0
 [<ffffffff81094732>] ? get_lock_stats+0x22/0x70
 [<ffffffff810626b0>] ? kthread_create_on_node+0x150/0x150
 [<ffffffff8152d02c>] ret_from_fork+0x7c/0xb0
 [<ffffffff810626b0>] ? kthread_create_on_node+0x150/0x150

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