[Bug 67462] [SNB IVB HSW] Call trace appears after system booting up

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67462

--- Comment #5 from Daniel Vetter <daniel at ffwll.ch> ---
(In reply to comment #4)
> (In reply to comment #3)
> > This should be entertaining. I'll see what I can do with it. Now to find SNB
> > hardware...
> 
> Hi, I check this again(using a latest -next-queued kernel) and find this
> issue happens on SNB, IVB and HSW platforms.
> Besides, calltrace has nothing to do with DP, it happens even if system
> booting without a monitor. So I think you can use any of these platforms to
> reproduce it.. :)

We have two calltraces in the dmesg here. The first one is

[    1.177979] WARNING: CPU: 1 PID: 1236 at
drivers/gpu/drm/i915/intel_display.c:842 ironlake_crtc_disable+0xd6/0x83c
[i915]()

Thus far that tends to only happen with DP when we try to switch it off.

The 2nd calltrace is

[    1.860783] firewire_ohci 0000:04:03.0: failed to read phy reg 2
[    1.863475] CPU: 2 PID: 1435 Comm: udevd Tainted: G        W   
3.11.0-rc2_drm-intel-next-queued_fae5cb_20130727_+ #23723
[    1.866130] Hardware name:                  /DQ67SW, BIOS
SWQ6710H.86A.0060.2011.1220.1805 12/20/2011
[    1.868786]  0000000000000000 ffff8802302fe000 ffffffff816ed6a8
0000000000000067
[    1.871438]  ffffffffa019929a ffff8802302fe000 ffffffffa0184300
0000000000000016
[    1.874051]  ffffffffa019b4ad ffffffffa019bda0 ffff8802302fe000
ffff8802302fe630
[    1.876673] Call Trace:
[    1.879231]  [<ffffffff816ed6a8>] ? dump_stack+0x41/0x51
[    1.881843]  [<ffffffffa019929a>] ? read_phy_reg+0x71/0x82 [firewire_ohci]
[    1.884455]  [<ffffffffa019b4ad>] ? ohci_enable+0x26f/0x535 [firewire_ohci]
[    1.887023]  [<ffffffffa017c91d>] ? fw_card_add+0x42/0x8a [firewire_core]
[    1.889594]  [<ffffffffa01990bf>] ? pci_probe+0x548/0x6b2 [firewire_ohci]
[    1.892166]  [<ffffffff8112cba7>] ? sysfs_do_create_link_sd+0x137/0x188
[    1.894748]  [<ffffffff81363fb9>] ? driver_probe_device+0x19e/0x19e
[    1.897369]  [<ffffffff812e1a6d>] ? local_pci_probe+0x16/0x26
[    1.899939]  [<ffffffff812e232b>] ? pci_device_probe+0xbc/0xe0
[    1.902502]  [<ffffffff81363ea5>] ? driver_probe_device+0x8a/0x19e
[    1.905054]  [<ffffffff8136400c>] ? __driver_attach+0x53/0x73
[    1.907646]  [<ffffffff813626d0>] ? bus_for_each_dev+0x4e/0x7f
[    1.910242]  [<ffffffff813636ca>] ? bus_add_driver+0xe5/0x204
[    1.912772]  [<ffffffff8136452e>] ? driver_register+0x8c/0x104
[    1.915302]  [<ffffffffa019f000>] ? 0xffffffffa019efff
[    1.917855]  [<ffffffff8100025a>] ? do_one_initcall+0x78/0xf6
[    1.920393]  [<ffffffff8104ebbf>] ? __blocking_notifier_call_chain+0x4f/0x5d
[    1.922917]  [<ffffffff81073a2e>] ? load_module+0x17ec/0x1aba
[    1.925447]  [<ffffffff8107151a>] ? free_notes_attrs+0x3f/0x3f
[    1.928027]  [<ffffffff81073d8c>] ? SyS_init_module+0x90/0x9b
[    1.930563]  [<ffffffff816f7ed2>] ? system_call_fastpath+0x16/0x1b
[    1.933178] firewire_ohci: probe of 0000:04:03.0 failed with error -16

That on is not our bug and you can ignore it (maybe it's fixed in latest
upstream already).

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