Bug 65673

Summary:

[ivb] WARNING: at drivers/gpu/drm/i915/intel_display.c:1437 ironlake_crtc_disable

Product:

DRI

Reporter:

Chris Wilson <chris>

Component:

DRM/Intel

Assignee:

Intel GFX Bugs mailing list <intel-gfx-bugs>

Status:

CLOSED FIXED

QA Contact:

Intel GFX Bugs mailing list <intel-gfx-bugs>

Severity:

normal

Priority:

medium

Version:

unspecified

Hardware:

Other

OS:

All

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
dmesg	none

Description Chris Wilson 2013-06-12 12:47:27 UTC

[    1.178445] fbcon: inteldrmfb (fb0) is primary device
[    1.200706] ------------[ cut here ]------------
[    1.200709] WARNING: at drivers/gpu/drm/i915/intel_display.c:1437 ironlake_crtc_disable+0x872/0x8a0()
[    1.200711] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.10.0-rc5+ #482
[    1.200712] Hardware name: Intel Corporation 2012 Client Platform/Emerald Lake 2, BIOS ACRVMBY1.86C.0078.P00.1201161002 01/16/2012
[    1.200714]  0000000000000009 ffff8802560bd4c0 ffffffff814a3406 ffff8802560bd4f8
[    1.200715]  ffffffff8103941b ffff88025550c000 ffff8802558d6000 ffff8802558c6000
[    1.200716]  ffff88025550e748 0000000000000000 ffff8802560bd508 ffffffff8103952a
[    1.200716] Call Trace:
[    1.200720]  [<ffffffff814a3406>] dump_stack+0x19/0x1b
[    1.200723]  [<ffffffff8103941b>] warn_slowpath_common+0x6b/0x90
[    1.200724]  [<ffffffff8103952a>] warn_slowpath_null+0x1a/0x20
[    1.200725]  [<ffffffff81310e42>] ironlake_crtc_disable+0x872/0x8a0
[    1.200726]  [<ffffffff813139a0>] intel_crtc_disable+0x30/0x130
[    1.200728]  [<ffffffff81314eed>] __intel_set_mode+0x2bd/0x1290
[    1.200731]  [<ffffffff8123081a>] ? string.isra.3+0x3a/0xd0
[    1.200733]  [<ffffffff8123081a>] ? string.isra.3+0x3a/0xd0
[    1.200733]  [<ffffffff8123081a>] ? string.isra.3+0x3a/0xd0
[    1.200734]  [<ffffffff81231641>] ? vsnprintf+0x461/0x640
[    1.200735]  [<ffffffff813185f6>] intel_set_mode+0x16/0x30
[    1.200737]  [<ffffffff81318dc2>] intel_crtc_set_config+0x7b2/0x970
[    1.200739]  [<ffffffff812d58be>] drm_mode_set_config_internal+0x2e/0x60
[    1.200742]  [<ffffffff812c1541>] drm_fb_helper_set_par+0x71/0xf0
[    1.200744]  [<ffffffff81260fa4>] fbcon_init+0x514/0x590
[    1.200747]  [<ffffffff812ae8ac>] visual_init+0x8c/0xe0
[    1.200748]  [<ffffffff812b0a05>] do_bind_con_driver+0x115/0x2a0
[    1.200750]  [<ffffffff812b1dd1>] do_take_over_console+0x61/0x70
[    1.200752]  [<ffffffff8125f493>] do_fbcon_takeover+0x63/0xc0
[    1.200754]  [<ffffffff81263015>] fbcon_event_notify+0x705/0x810
[    1.200756]  [<ffffffff81061bed>] notifier_call_chain+0x4d/0x70
[    1.200757]  [<ffffffff81061f88>] __blocking_notifier_call_chain+0x58/0x80
[    1.200759]  [<ffffffff81061fc6>] blocking_notifier_call_chain+0x16/0x20
[    1.200761]  [<ffffffff812572db>] fb_notifier_call_chain+0x1b/0x20
[    1.200762]  [<ffffffff81259356>] register_framebuffer+0x1d6/0x310
[    1.200764]  [<ffffffff812c1211>] drm_fb_helper_initial_config+0x371/0x540
[    1.200767]  [<ffffffff81339ac1>] intel_fbdev_initial_config+0x21/0x30
[    1.200769]  [<ffffffff812e770e>] i915_driver_load+0xe3e/0xe70
[    1.200771]  [<ffffffff812d08e6>] drm_get_pci_dev+0x176/0x2a0
[    1.200773]  [<ffffffff812e29ac>] i915_pci_probe+0x2c/0x70
[    1.200777]  [<ffffffff81350f77>] driver_probe_device+0x77/0x240
[    1.200778]  [<ffffffff813511eb>] __driver_attach+0xab/0xb0
[    1.200780]  [<ffffffff81351140>] ? driver_probe_device+0x240/0x240
[    1.200781]  [<ffffffff8134f29d>] bus_for_each_dev+0x5d/0xa0
[    1.200783]  [<ffffffff81350c9e>] driver_attach+0x1e/0x20
[    1.200784]  [<ffffffff8134fb7e>] bus_add_driver+0xfe/0x240
[    1.200786]  [<ffffffff818bb276>] ? ftrace_define_fields_drm_vblank_event+0x69/0x69
[    1.200787]  [<ffffffff81351867>] driver_register+0x77/0x170
[    1.200788]  [<ffffffff818bb276>] ? ftrace_define_fields_drm_vblank_event+0x69/0x69
[    1.200790]  [<ffffffff8124941c>] __pci_register_driver+0x4c/0x50
[    1.200791]  [<ffffffff812d0b25>] drm_pci_init+0x115/0x130
[    1.200793]  [<ffffffff818bb276>] ? ftrace_define_fields_drm_vblank_event+0x69/0x69
[    1.200794]  [<ffffffff818bb2dc>] i915_init+0x66/0x68
[    1.200796]  [<ffffffff8188edb2>] do_one_initcall+0x7b/0x10f
[    1.200798]  [<ffffffff8188ef7a>] kernel_init_freeable+0x134/0x1c1
[    1.200800]  [<ffffffff8188e80b>] ? do_early_param+0x8a/0x8a
[    1.200802]  [<ffffffff814943a0>] ? rest_init+0x80/0x80
[    1.200803]  [<ffffffff814943ae>] kernel_init+0xe/0xf0
[    1.200805]  [<ffffffff814a866c>] ret_from_fork+0x7c/0xb
[    1.200806]  [<ffffffff814943a0>] ? rest_init+0x80/0x80
[    1.200809] ---[ end trace 2d08f775911e9ce1 ]---

Comment 1 Chris Wilson 2013-06-12 12:52:58 UTC

Created attachment 80725 [details]
dmesg

Comment 2 Chris Wilson 2013-06-12 12:56:45 UTC

Looks like we failed to properly mark the CRTC as disabled upon takeover and so try to turn things off that were never on, upsetting our bookkeeping. Looks inconsequential, just paranoid.

Comment 3 Chris Wilson 2013-06-12 14:12:00 UTC

*** Bug 65674 has been marked as a duplicate of this bug. ***

Comment 4 Chris Wilson 2013-06-12 14:15:08 UTC

Fixed with refcount reconstruction in danvet/stuff.

Comment 5 Daniel Vetter 2013-06-13 07:39:51 UTC

... which is now merged (or at least the part that fixes the refcount mismatches).

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