[Bug 86771] [REGRESSION] intel_wait_for_vblank+0x20d/0x220 [i915]() vblank wait on pipe B timed out

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=86771

Alan Bartlett <ajb at elrepo.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|3.18-rc1 (first seen),      |From 3.18-rc1 to 3.18-rc7,
                   |3.18-rc7 (still present)    |3.18 (still present)

--- Comment #12 from Alan Bartlett <ajb at elrepo.org> ---
Built a 3.18 kernel. (3.18.0-1.el6.elrepo.x86_64)

Traces --

------------[ cut here ]------------
WARNING: CPU: 0 PID: 52 at drivers/gpu/drm/i915/intel_display.c:901
g4x_wait_for_vblank+0xe9/0x100 [i915]()
vblank wait on pipe B timed out
Modules linked in: i915 drm_kms_helper video
CPU: 0 PID: 52 Comm: kworker/u4:1 Not tainted 3.18.0-1.el6.elrepo.x86_64 #1
Hardware name: Dell Inc. Latitude E5500                  /0DW633, BIOS A19
06/13/2013
Workqueue: events_unbound async_run_entry_fn
 0000000000000385 ffff8800d7b33a08 ffffffff816671cf 0000000000000385
 ffff8800d7b33a58 ffff8800d7b33a48 ffffffff8107298c 00000000fffb6f1f
 ffff8800d8a30000 0000000000071040 0000000000000003 00000000fffb6f1e
Call Trace:
 [<ffffffff816671cf>] dump_stack+0x49/0x62
 [<ffffffff8107298c>] warn_slowpath_common+0x8c/0xc0
 [<ffffffff81072a76>] warn_slowpath_fmt+0x46/0x50
 [<ffffffffa008f6b9>] g4x_wait_for_vblank+0xe9/0x100 [i915]
 [<ffffffffa008f709>] intel_wait_for_vblank+0x39/0x140 [i915]
 [<ffffffffa00c83d8>] intel_tv_detect_type+0x108/0x330 [i915]
 [<ffffffffa00c86f3>] intel_tv_detect+0xf3/0x200 [i915]
 [<ffffffffa000dd73>]
drm_helper_probe_single_connector_modes_merge_bits+0x303/0x420 [drm_kms_helper]
 [<ffffffffa000dec3>] drm_helper_probe_single_connector_modes+0x13/0x20
[drm_kms_helper]
 [<ffffffffa0015c52>] drm_fb_helper_initial_config+0x72/0xe0 [drm_kms_helper]
 [<ffffffffa00a52ab>] intel_fbdev_initial_config+0x1b/0x20 [i915]
 [<ffffffff81092a5f>] async_run_entry_fn+0x3f/0x100
 [<ffffffff8108af46>] process_one_work+0x146/0x450
 [<ffffffff8108b372>] worker_thread+0x122/0x420
 [<ffffffff8108b250>] ? process_one_work+0x450/0x450
 [<ffffffff8109020e>] kthread+0xce/0xf0
 [<ffffffff81090140>] ? kthread_freezable_should_stop+0x70/0x70
 [<ffffffff8166b63c>] ret_from_fork+0x7c/0xb0
 [<ffffffff81090140>] ? kthread_freezable_should_stop+0x70/0x70
---[ end trace b77877cea5f0ee4f ]---

------------[ cut here ]------------
WARNING: CPU: 0 PID: 52 at drivers/gpu/drm/i915/intel_display.c:901
g4x_wait_for_vblank+0xe9/0x100 [i915]()
vblank wait on pipe B timed out
Modules linked in: i915 drm_kms_helper video
CPU: 0 PID: 52 Comm: kworker/u4:1 Tainted: G        W     
3.18.0-1.el6.elrepo.x86_64 #1
Hardware name: Dell Inc. Latitude E5500                  /0DW633, BIOS A19
06/13/2013
Workqueue: events_unbound async_run_entry_fn
 0000000000000385 ffff8800d7b338d8 ffffffff816671cf 0000000000000385
 ffff8800d7b33928 ffff8800d7b33918 ffffffff8107298c 00000000fffb6f65
 ffff8800d8a30000 0000000000071040 0000000000000005 00000000fffb6f64
Call Trace:
 [<ffffffff816671cf>] dump_stack+0x49/0x62
 [<ffffffff8107298c>] warn_slowpath_common+0x8c/0xc0
 [<ffffffff81072a76>] warn_slowpath_fmt+0x46/0x50
 [<ffffffffa008f6b9>] g4x_wait_for_vblank+0xe9/0x100 [i915]
 [<ffffffffa008f709>] intel_wait_for_vblank+0x39/0x140 [i915]
 [<ffffffffa0097f12>] i9xx_crtc_disable+0x92/0x360 [i915]
 [<ffffffffa0094d96>] intel_crtc_disable+0x56/0x150 [i915]
 [<ffffffffa009b697>] __intel_set_mode+0x287/0x730 [i915]
 [<ffffffffa009bb56>] intel_set_mode+0x16/0x30 [i915]
 [<ffffffffa009bc57>] intel_release_load_detect_pipe+0xb7/0x100 [i915]
 [<ffffffffa00c8701>] intel_tv_detect+0x101/0x200 [i915]
 [<ffffffffa000dd73>]
drm_helper_probe_single_connector_modes_merge_bits+0x303/0x420 [drm_kms_helper]
 [<ffffffffa000dec3>] drm_helper_probe_single_connector_modes+0x13/0x20
[drm_kms_helper]
 [<ffffffffa0015c52>] drm_fb_helper_initial_config+0x72/0xe0 [drm_kms_helper]
 [<ffffffffa00a52ab>] intel_fbdev_initial_config+0x1b/0x20 [i915]
 [<ffffffff81092a5f>] async_run_entry_fn+0x3f/0x100
 [<ffffffff8108af46>] process_one_work+0x146/0x450
 [<ffffffff8108b372>] worker_thread+0x122/0x420
 [<ffffffff8108b250>] ? process_one_work+0x450/0x450
 [<ffffffff8109020e>] kthread+0xce/0xf0
 [<ffffffff81090140>] ? kthread_freezable_should_stop+0x70/0x70
 [<ffffffff8166b63c>] ret_from_fork+0x7c/0xb0
 [<ffffffff81090140>] ? kthread_freezable_should_stop+0x70/0x70
---[ end trace b77877cea5f0ee50 ]---

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