Re: Intel Haswell kernel warning (3.11.2)

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Let's CC some more people.

On Sun, Sep 29, 2013 at 10:17:34AM -0400, Wakko Warner wrote:
> Wakko Warner wrote:
> > Please keep me in CC.
> > 
> > I receive a warning in drivers/gpu/drm/i915/intel_display.c:3869.  This
> > happens when I'm on a console, the screen has gone into power save and I
> > press a key to wake it up.
> > 
> > This doesn't happen when I'm in X.
> > 
> > Kernel is Vanilla 3.11.2.
> 
> Tested 3.12-rc2.  Same result.  Here's the kernel log from 3.12-rc2.
> [  813.921516] ------------[ cut here ]------------
> [  813.921531] WARNING: CPU: 0 PID: 492 at
> /usr/src/linux/dist/3.12-rc2/drivers/gpu/drm/i915/intel_display.c:3920
> /intel_modeset_check_state+0x764/0x770 [i915]()
> [  813.921531] wrong connector dpms state
> [  813.921547] Modules linked in: nfsd auth_rpcgss oid_registry exportfs nfs
> lockd sunrpc xt_nat iptable_nat nf_nat_ipv4 nf_nat xt_limit xt_LOG xt_tcpudp
> nf_conntrack_ipv4 nf_defrag_ipv4 ipt_REJECT ipv6 xt_recent xt_conntrack
> nf_conntrack iptable_filter ip_tables x_tables snd_hda_codec_realtek
> snd_hda_codec_hdmi x86_pkg_temp_thermal coretemp kvm_intel kvm snd_hda_intel
> crc32_pclmul snd_hda_codec i915 snd_hwdep snd_pcm_oss crc32c_intel
> snd_mixer_oss ghash_clmulni_intel aesni_intel intel_agp aes_x86_64 intel_gtt
> lrw drm_kms_helper gf128mul snd_pcm 8250_pci glue_helper drm ablk_helper
> e1000e snd_page_alloc agpgart snd_timer video thermal processor fan snd 8250
> thermal_sys serial_core soundcore cryptd button hwmon evdev i2c_i801
> [  813.921549] CPU: 0 PID: 492 Comm: kworker/0:1 Not tainted 3.12.0-rc2 #3
> [  813.921549] Hardware name: Supermicro X10SAE/X10SAE, BIOS 1.00 05/03/2013
> [  813.921553] Workqueue: events console_callback
> [  813.921554]  0000000000000009 ffff8802360b1b48 ffffffff8143608e
> ffff8802360b1b90
> [  813.921555]  ffff8802360b1b80 ffffffff8103df53 ffff8800b24ec000
> ffff8800b24eb000
> [  813.921555]  ffff8800b24e8800 ffff8800b24e8bd8 ffff8800379f3c00
> ffff8802360b1be0
> [  813.921556] Call Trace:
> [  813.921560]  [<ffffffff8143608e>] dump_stack+0x54/0x8d
> [  813.921563]  [<ffffffff8103df53>] warn_slowpath_common+0x73/0x90
> [  813.921564]  [<ffffffff8103dfb7>] warn_slowpath_fmt+0x47/0x50
> [  813.921569]  [<ffffffffa056d0a3>] ?
> intel_ddi_connector_get_hw_state+0x63/0x120 [i915]
> [  813.921575]  [<ffffffffa0564014>] intel_modeset_check_state+0x764/0x770
> [i915]
> [  813.921578]  [<ffffffffa0564065>] intel_connector_dpms+0x45/0x80 [i915]
> [  813.921581]  [<ffffffffa03a31c0>] drm_fb_helper_dpms.isra.11+0x110/0x150
> [drm_kms_helper]
> [  813.921582]  [<ffffffffa03a323e>] drm_fb_helper_blank+0x3e/0x80
> [drm_kms_helper]
> [  813.921584]  [<ffffffff81217b52>] fb_blank+0x52/0xc0
> [  813.921585]  [<ffffffff812244bb>] fbcon_blank+0x21b/0x2d0
> [  813.921588]  [<ffffffff810481e6>] ? lock_timer_base.isra.29+0x26/0x50
> [  813.921589]  [<ffffffff81047d22>] ? internal_add_timer+0x12/0x40
> [  813.921590]  [<ffffffff810489b8>] ? mod_timer+0xf8/0x1c0
> [  813.921591]  [<ffffffff8126f871>] do_unblank_screen+0xa1/0x1c0
> [  813.921593]  [<ffffffff81270ba7>] poke_blanked_console+0xc7/0xd0
> [  813.921594]  [<ffffffff81270cef>] console_callback+0x13f/0x160
> [  813.921596]  [<ffffffff81053d08>] process_one_work+0x148/0x3d0
> [  813.921597]  [<ffffffff810549c9>] worker_thread+0x119/0x3a0
> [  813.921599]  [<ffffffff810548b0>] ? manage_workers.isra.30+0x2a0/0x2a0
> [  813.921600]  [<ffffffff8105a42b>] kthread+0xbb/0xc0
> [  813.921601]  [<ffffffff8105a370>] ? kthread_create_on_node+0x120/0x120
> [  813.921603]  [<ffffffff8143cc3c>] ret_from_fork+0x7c/0xb0
> [  813.921605]  [<ffffffff8105a370>] ? kthread_create_on_node+0x120/0x120
> [  813.921605] ---[ end trace b0a29ba4948c3d5b ]---
> 
> > # lspci -vns2
> > 00:02.0 0300: 8086:041a (rev 06) (prog-if 00 [VGA controller])
> >         Subsystem: 8086:2010
> >         Flags: bus master, fast devsel, latency 0, IRQ 57
> >         Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
> >         Memory at e0000000 (64-bit, prefetchable) [size=256M]
> >         I/O ports at f000 [size=64]
> >         Expansion ROM at <unassigned> [disabled]
> >         Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
> >         Capabilities: [d0] Power Management version 2
> >         Capabilities: [a4] PCI Advanced Features
> >         Kernel driver in use: i915
> > #
> > 
> > gcc version 4.8.1 (Debian 4.8.1-10)
> > 
> > This is from dmesg:
> > [  354.803050] ------------[ cut here ]------------
> > [  354.803064] WARNING: CPU: 0 PID: 482 at /usr/src/linux/dist/3.11.2/drivers/gpu/drm/i915/intel_display.c:3869 intel_modeset_check_state+0x764/0x770 [i915]()
> > [  354.803064] wrong connector dpms state
> > [  354.803084] Modules linked in: nfsd auth_rpcgss oid_registry exportfs nfs lockd sunrpc xt_nat iptable_nat nf_nat_ipv4 nf_nat xt_limit xt_LOG xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 ipt_REJECT ipv6 xt_recent xt_conntrack nf_conntrack iptable_filter ip_tables x_tables snd_hda_codec_realtek snd_hda_codec_hdmi x86_pkg_temp_thermal snd_hda_intel coretemp kvm_intel snd_hda_codec i915 kvm snd_hwdep snd_pcm_oss snd_mixer_oss crc32_pclmul snd_pcm crc32c_intel e1000e intel_agp igb ghash_clmulni_intel intel_gtt aesni_intel cfbfillrect aes_x86_64 cfbimgblt lrw cfbcopyarea drm_kms_helper ptp video thermal processor gf128mul snd_page_alloc drm snd_timer glue_helper 8250_pci snd pps_core ablk_helper agpgart cryptd sg soundcore fan i2c_algo_bit sr_mod thermal_sys 8250 i2c_i801 serial_core hwmon cdrom i2c_core evdev button
> > [  354.803086] CPU: 0 PID: 482 Comm: kworker/0:1 Not tainted 3.11.2 #1
> > [  354.803087] Hardware name: Supermicro X10SAE/X10SAE, BIOS 1.00 05/03/2013
> > [  354.803091] Workqueue: events console_callback
> > [  354.803092]  0000000000000009 ffff88023611db48 ffffffff814048ac ffff88023611db90
> > [  354.803093]  ffff88023611db80 ffffffff8103d4e3 ffff880230d82800 ffff880230f9b800
> > [  354.803094]  ffff880230f99000 ffff880230f99448 ffff8802351c0e00 ffff88023611dbe0
> > [  354.803094] Call Trace:
> > [  354.803098]  [<ffffffff814048ac>] dump_stack+0x54/0x8d
> > [  354.803101]  [<ffffffff8103d4e3>] warn_slowpath_common+0x73/0x90
> > [  354.803103]  [<ffffffff8103d547>] warn_slowpath_fmt+0x47/0x50
> > [  354.803109]  [<ffffffffa089f1be>] ? intel_ddi_connector_get_hw_state+0x5e/0x110 [i915]
> > [  354.803114]  [<ffffffffa0896974>] intel_modeset_check_state+0x764/0x770 [i915]
> > [  354.803117]  [<ffffffffa08969bb>] intel_connector_dpms+0x3b/0x60 [i915]
> > [  354.803120]  [<ffffffffa037e1d0>] drm_fb_helper_dpms.isra.11+0x120/0x160 [drm_kms_helper]
> > [  354.803122]  [<ffffffffa037e24e>] drm_fb_helper_blank+0x3e/0x80 [drm_kms_helper]
> > [  354.803123]  [<ffffffff812116c2>] fb_blank+0x52/0xc0
> > [  354.803125]  [<ffffffff8121e04b>] fbcon_blank+0x21b/0x2d0
> > [  354.803127]  [<ffffffff81062243>] ? update_rq_clock.part.74+0x13/0x30
> > [  354.803129]  [<ffffffff81047486>] ? lock_timer_base.isra.30+0x26/0x50
> > [  354.803130]  [<ffffffff810472b2>] ? internal_add_timer+0x12/0x40
> > [  354.803131]  [<ffffffff81047f48>] ? mod_timer+0xf8/0x1c0
> > [  354.803133]  [<ffffffff81266d61>] do_unblank_screen+0xa1/0x1c0
> > [  354.803134]  [<ffffffff81268087>] poke_blanked_console+0xc7/0xd0
> > [  354.803136]  [<ffffffff812681cf>] console_callback+0x13f/0x160
> > [  354.803137]  [<ffffffff81053258>] process_one_work+0x148/0x3d0
> > [  354.803138]  [<ffffffff81053f19>] worker_thread+0x119/0x3a0
> > [  354.803140]  [<ffffffff81053e00>] ? manage_workers.isra.30+0x2a0/0x2a0
> > [  354.803141]  [<ffffffff8105994b>] kthread+0xbb/0xc0
> > [  354.803142]  [<ffffffff81059890>] ? kthread_create_on_node+0x120/0x120
> > [  354.803144]  [<ffffffff8140b32c>] ret_from_fork+0x7c/0xb0
> > [  354.803145]  [<ffffffff81059890>] ? kthread_create_on_node+0x120/0x120
> > [  354.803145] ---[ end trace 590553ce6c6f5fa9 ]---
> > 
> > -- 
> >  Microsoft has beaten Volkswagen's world record.  Volkswagen only created 22
> >  million bugs.
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> > the body of a message to majordomo@xxxxxxxxxxxxxxx
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at  http://www.tux.org/lkml/
> -- 
>  Microsoft has beaten Volkswagen's world record.  Volkswagen only created 22
>  million bugs.
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
> 

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
--
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