Re: 3.13.1 - WARNING at drivers/gpu/drm/i915/i915_irq.c:1240

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On Tue, Feb 04, 2014 at 08:37:02PM +0100, Thomas Meyer wrote:
> 
> Hi,
> 
> I see a *lot* of these warning in 3.13.1.
> 3.12.x never showed this problem.
> Any ideas?!

Can you please try latest the drm-intel-nightly git branch from
git://anongit.freedesktop.org/drm-intel ?

If that one's still affected then please boot with drm.debug=0xe added to
your kernel cmdline, reproduce the WARN and attach the complete dmesg.

Thanks, Daniel
> 
> [ 9373.175179] WARNING: CPU: 0 PID: 7715 at drivers/gpu/drm/i915/i915_irq.c:1240 i965_irq_handler+0x4ee/0x670()
> [ 9373.175181] Received HPD interrupt although disabled
> [ 9373.175183] Modules linked in: tcp_lp fuse ip6t_rpfilter ip6t_REJECT xt_conntrack ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw arc4 snd_hda_codec_hdmi snd_hda_codec_realtek iwldvm snd_hda_intel snd_usb_audio snd_hda_codec mac80211 snd_usbmidi_lib acer_wmi kvm_intel kvm snd_hwdep sparse_keymap acerhdf snd_seq joydev pcspkr snd_pcm btusb iwlwifi bluetooth cfg80211 rfkill asix usbnet mii atl1c snd_rawmidi snd_seq_device snd_page_alloc snd_timer snd soundcore wmi acpi_cpufreq ipv6 xts gf128mul udl syscopyarea sysfillrect sysimgblt drm_usb
> [ 9373.175230] CPU: 0 PID: 7715 Comm: irq/42-i915 Tainted: G        W    3.13.1 #3
> [ 9373.175232] Hardware name: Acer Aspire 1810T/JM11-MS, BIOS v1.3310 03/25/2010
> [ 9373.175234]  0000000000000009 ffff88006e6f3d30 ffffffff81542154 ffff88006e6f3d68
> [ 9373.175237]  ffffffff810391fc 0000000000000005 0000000000080000 ffff880234814040
> [ 9373.175240]  ffff880234814000 ffffffff815a98e4 ffff88006e6f3dc8 ffffffff81039267
> [ 9373.175244] Call Trace:
> [ 9373.175248]  [<ffffffff81542154>] dump_stack+0x19/0x1b
> [ 9373.175252]  [<ffffffff810391fc>] warn_slowpath_common+0x6c/0x90
> [ 9373.175256]  [<ffffffff81039267>] warn_slowpath_fmt+0x47/0x50
> [ 9373.175260]  [<ffffffff81071610>] ? irq_thread_fn+0x40/0x40
> [ 9373.175264]  [<ffffffff8132746e>] i965_irq_handler+0x4ee/0x670
> [ 9373.175268]  [<ffffffff81071610>] ? irq_thread_fn+0x40/0x40
> [ 9373.175272]  [<ffffffff8107162e>] irq_forced_thread_fn+0x1e/0x50
> [ 9373.175275]  [<ffffffff81071610>] ? irq_thread_fn+0x40/0x40
> [ 9373.175279]  [<ffffffff81071838>] irq_thread+0xe8/0x120
> [ 9373.175283]  [<ffffffff81071690>] ? wake_threads_waitq.part.30+0x30/0x30
> [ 9373.175286]  [<ffffffff81071750>] ? irq_thread_dtor+0xc0/0xc0
> [ 9373.175290]  [<ffffffff81054dbb>] kthread+0xcb/0xf0
> [ 9373.175294]  [<ffffffff81054cf0>] ? kthread_worker_fn+0x170/0x170
> [ 9373.175298]  [<ffffffff81547a7a>] ret_from_fork+0x7a/0xb0
> [ 9373.175301]  [<ffffffff81054cf0>] ? kthread_worker_fn+0x170/0x170
> [ 9373.175304] ---[ end trace ddb9ca9e4b6ee979 ]---
> 
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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