WARNING: at drivers/gpu/drm/i915/intel_display.c:11375 [i915] in 3.19-rc2

WARNING: at drivers/gpu/drm/i915/intel_display.c:11375 [i915] in 3.19-rc2

[Andrey Skvortsov]

[-- Attachment #1: Type: text/plain, Size: 3036 bytes --]

Hi,

this warning does not exist in 3.19-rc1, but it happens every boot in
3.19-rc2. If you need any other information or data, I would be glad
to help to debug it. 

[   12.848428] ------------[ cut here ]------------
[   12.848479] WARNING: CPU: 1 PID: 328 at drivers/gpu/drm/i915/intel_display.c:11375 intel_crtc_set_config+0x3de/0xb36 [i915]()
[   12.848482] WARN_ON(!set->fb && (set->num_connectors != 0))
[   12.848484] Modules linked in: i915(E) drm_kms_helper(E) drm(E) snd_hda_intel(E) snd_hda_controller(E) i2c_algo_bit(E) snd_hda_codec(E) i2c_core(E) xhci_pci(E) xhci_hcd(E) ehci_pci(E) ehci_hcd(E) usbcore(E) snd_hwdep(E) snd_pcm_oss(E) snd_mixer_oss(E) snd_pcm(E) snd_seq_midi(E) snd_rawmidi(E) snd_seq_midi_event(E) snd_seq(E) snd_timer(E) snd_seq_device(E) snd(E) video(E) battery(E) ppdev(E) parport_pc(E) usb_common(E) serio_raw(E) lpc_ich(E) evdev(E) mfd_core(E) soundcore(E) button(E) acpi_cpufreq(E) processor(E) coretemp(E) lp(E) parport(E) ext3(E) jbd(E) mbcache(E) sd_mod(E) ata_generic(E) btrfs(E) ata_piix(E) pata_via(E) libata(E) raid6_pq(E) thermal(E) scsi_mod(E) fan(E) thermal_sys(E) r8169(E) mii(E) xor(E) zlib_deflate(E) crc32c_generic(E) libcrc32c(E)
[   12.848531] CPU: 1 PID: 328 Comm: plymouthd Tainted: G            E  3.19.0-rc2-noiommu- #122
[   12.848532] Hardware name: System manufacturer System Product Name/P8H67-M PRO, BIOS 3904 04/27/2013
[   12.848533]  0000000000000000 ffffffffa06b3002 ffffffff813c01df ffff8800378afcb8
[   12.848535]  ffffffff8103f24b 0000000000000000 ffffffffa06685d8 ffff880000110880
[   12.848537]  ffff8800c83c2d00 ffff8800c8ccb160 ffff8800376c1000 ffff88011a74e000
[   12.848539] Call Trace:
[   12.848544]  [<ffffffff813c01df>] ? dump_stack+0x4a/0x74
[   12.848548]  [<ffffffff8103f24b>] ? warn_slowpath_common+0x9e/0xb7
[   12.848566]  [<ffffffffa06685d8>] ? intel_crtc_set_config+0x3de/0xb36 [i915]
[   12.848568]  [<ffffffff8103f30f>] ? warn_slowpath_fmt+0x4a/0x4f
[   12.848584]  [<ffffffffa06685d8>] ? intel_crtc_set_config+0x3de/0xb36 [i915]
[   12.848586]  [<ffffffff813c228f>] ? __ww_mutex_lock+0x1c/0x91
[   12.848598]  [<ffffffffa0592985>] ? drm_mode_set_config_internal+0x53/0xd7 [drm]
[   12.848604]  [<ffffffffa05f6f15>] ? restore_fbdev_mode+0xae/0xca [drm_kms_helper]
[   12.848608]  [<ffffffffa05f8393>] ? drm_fb_helper_restore_fbdev_mode_unlocked+0x24/0x5a [drm_kms_helper]
[   12.848627]  [<ffffffffa06747ea>] ? intel_fbdev_restore_mode+0x1b/0x41 [i915]
[   12.848632]  [<ffffffffa0589249>] ? drm_lastclose+0x3c/0x104 [drm]
[   12.848637]  [<ffffffffa0589732>] ? drm_release+0x421/0x457 [drm]
[   12.848639]  [<ffffffff8112cd65>] ? __fput+0xdb/0x177
[   12.848642]  [<ffffffff81054977>] ? task_work_run+0x8e/0xa3
[   12.848645]  [<ffffffff81002814>] ? do_notify_resume+0x64/0x7a
[   12.848647]  [<ffffffff813c4267>] ? int_signal+0x12/0x17
[   12.848649] ---[ end trace da6972fb56a05968 ]---

-- 
Best regards,
Andrey Skvortsov

Secure e-mail with gnupg: See http://www.gnupg.org/
PGP Key ID: 0x57A3AEAD



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Re: WARNING: at drivers/gpu/drm/i915/intel_display.c:11375 [i915] in 3.19-rc2

[Jani Nikula]

On Thu, 01 Jan 2015, Andrey Skvortsov <andrej.skvortzov@gmail.com> wrote:
> Hi,
>
> this warning does not exist in 3.19-rc1, but it happens every boot in
> 3.19-rc2. If you need any other information or data, I would be glad
> to help to debug it.

Hmm, at a glance I can't find a commit that could be the culprit. Can
you bisect between rc1 and rc2 to find the bad commit?

Thanks,
Jani.



>
> [   12.848428] ------------[ cut here ]------------
> [   12.848479] WARNING: CPU: 1 PID: 328 at drivers/gpu/drm/i915/intel_display.c:11375 intel_crtc_set_config+0x3de/0xb36 [i915]()
> [   12.848482] WARN_ON(!set->fb && (set->num_connectors != 0))
> [   12.848484] Modules linked in: i915(E) drm_kms_helper(E) drm(E) snd_hda_intel(E) snd_hda_controller(E) i2c_algo_bit(E) snd_hda_codec(E) i2c_core(E) xhci_pci(E) xhci_hcd(E) ehci_pci(E) ehci_hcd(E) usbcore(E) snd_hwdep(E) snd_pcm_oss(E) snd_mixer_oss(E) snd_pcm(E) snd_seq_midi(E) snd_rawmidi(E) snd_seq_midi_event(E) snd_seq(E) snd_timer(E) snd_seq_device(E) snd(E) video(E) battery(E) ppdev(E) parport_pc(E) usb_common(E) serio_raw(E) lpc_ich(E) evdev(E) mfd_core(E) soundcore(E) button(E) acpi_cpufreq(E) processor(E) coretemp(E) lp(E) parport(E) ext3(E) jbd(E) mbcache(E) sd_mod(E) ata_generic(E) btrfs(E) ata_piix(E) pata_via(E) libata(E) raid6_pq(E) thermal(E) scsi_mod(E) fan(E) thermal_sys(E) r8169(E) mii(E) xor(E) zlib_deflate(E) crc32c_generic(E) libcrc32c(E)
> [   12.848531] CPU: 1 PID: 328 Comm: plymouthd Tainted: G            E  3.19.0-rc2-noiommu- #122
> [   12.848532] Hardware name: System manufacturer System Product Name/P8H67-M PRO, BIOS 3904 04/27/2013
> [   12.848533]  0000000000000000 ffffffffa06b3002 ffffffff813c01df ffff8800378afcb8
> [   12.848535]  ffffffff8103f24b 0000000000000000 ffffffffa06685d8 ffff880000110880
> [   12.848537]  ffff8800c83c2d00 ffff8800c8ccb160 ffff8800376c1000 ffff88011a74e000
> [   12.848539] Call Trace:
> [   12.848544]  [<ffffffff813c01df>] ? dump_stack+0x4a/0x74
> [   12.848548]  [<ffffffff8103f24b>] ? warn_slowpath_common+0x9e/0xb7
> [   12.848566]  [<ffffffffa06685d8>] ? intel_crtc_set_config+0x3de/0xb36 [i915]
> [   12.848568]  [<ffffffff8103f30f>] ? warn_slowpath_fmt+0x4a/0x4f
> [   12.848584]  [<ffffffffa06685d8>] ? intel_crtc_set_config+0x3de/0xb36 [i915]
> [   12.848586]  [<ffffffff813c228f>] ? __ww_mutex_lock+0x1c/0x91
> [   12.848598]  [<ffffffffa0592985>] ? drm_mode_set_config_internal+0x53/0xd7 [drm]
> [   12.848604]  [<ffffffffa05f6f15>] ? restore_fbdev_mode+0xae/0xca [drm_kms_helper]
> [   12.848608]  [<ffffffffa05f8393>] ? drm_fb_helper_restore_fbdev_mode_unlocked+0x24/0x5a [drm_kms_helper]
> [   12.848627]  [<ffffffffa06747ea>] ? intel_fbdev_restore_mode+0x1b/0x41 [i915]
> [   12.848632]  [<ffffffffa0589249>] ? drm_lastclose+0x3c/0x104 [drm]
> [   12.848637]  [<ffffffffa0589732>] ? drm_release+0x421/0x457 [drm]
> [   12.848639]  [<ffffffff8112cd65>] ? __fput+0xdb/0x177
> [   12.848642]  [<ffffffff81054977>] ? task_work_run+0x8e/0xa3
> [   12.848645]  [<ffffffff81002814>] ? do_notify_resume+0x64/0x7a
> [   12.848647]  [<ffffffff813c4267>] ? int_signal+0x12/0x17
> [   12.848649] ---[ end trace da6972fb56a05968 ]---
>
> -- 
> Best regards,
> Andrey Skvortsov
>
> Secure e-mail with gnupg: See http://www.gnupg.org/
> PGP Key ID: 0x57A3AEAD
>
>

-- 
Jani Nikula, Intel Open Source Technology Center

Re: WARNING: at drivers/gpu/drm/i915/intel_display.c:11375 [i915] in 3.19-rc2

[Sudip Mukherjee]

On Thu, Jan 01, 2015 at 05:22:15PM +0300, Andrey Skvortsov wrote:
> Hi,
> 
> this warning does not exist in 3.19-rc1, but it happens every boot in
> 3.19-rc2. If you need any other information or data, I would be glad
> to help to debug it. 

mine is also i915, but i am not seeing any warning. if you send me your .config, then i can try booting using that.
the current kernel version is : 3.19.0-rc2-next-20141231+

thanks
sudip

> 
> [   12.848428] ------------[ cut here ]------------
> [   12.848479] WARNING: CPU: 1 PID: 328 at drivers/gpu/drm/i915/intel_display.c:11375 intel_crtc_set_config+0x3de/0xb36 [i915]()
> [   12.848649] ---[ end trace da6972fb56a05968 ]---
> 
> -- 
> Best regards,
> Andrey Skvortsov
> 
> Secure e-mail with gnupg: See http://www.gnupg.org/
> PGP Key ID: 0x57A3AEAD
> 
> 

Re: WARNING: at drivers/gpu/drm/i915/intel_display.c:11375 [i915] in 3.19-rc2

[Andrey Skvortsov]

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On Fri, Jan 02, 2015 at 09:42:01AM +0200, Jani Nikula wrote:
> On Thu, 01 Jan 2015, Andrey Skvortsov <andrej.skvortzov@gmail.com> wrote:
> > Hi,
> >
> > this warning does not exist in 3.19-rc1, but it happens every boot in
> > 3.19-rc2. If you need any other information or data, I would be glad
> > to help to debug it.
> 
> Hmm, at a glance I can't find a commit that could be the culprit. Can
> you bisect between rc1 and rc2 to find the bad commit?

Sorry, my first message was not fully correct. As I tested this more,
it happens unfortunately not every boot. And this is not a regression,
because it happened couple of times with 3.19-rc1 too.

This warning seems to depend on the previously booted kernel. If I
boot the same kernel every time, it occurs very seldom. To
reproduce the warning I booted v3.19-rc2 and v3.19-rc1-g08b022a965 one after
another many times. In this case the warning happens with probability around 50%.

> > [   12.848428] ------------[ cut here ]------------
> > [   12.848479] WARNING: CPU: 1 PID: 328 at drivers/gpu/drm/i915/intel_display.c:11375 intel_crtc_set_config+0x3de/0xb36 [i915]()
> > [   12.848482] WARN_ON(!set->fb && (set->num_connectors != 0))

-- 
Best regards,
Andrey Skvortsov

Secure e-mail with gnupg: See http://www.gnupg.org/
PGP Key ID: 0x57A3AEAD



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Re: WARNING: at drivers/gpu/drm/i915/intel_display.c:11375 [i915] in 3.19-rc2

[Andrey Skvortsov]

[-- Attachment #1.1: Type: text/plain, Size: 1103 bytes --]

On Fri, Jan 02, 2015 at 08:27:29PM +0530, Sudip Mukherjee wrote:
> On Thu, Jan 01, 2015 at 05:22:15PM +0300, Andrey Skvortsov wrote:
> > Hi,
> > 
> > this warning does not exist in 3.19-rc1, but it happens every boot in
> > 3.19-rc2. If you need any other information or data, I would be glad
> > to help to debug it. 
> 
> mine is also i915, but i am not seeing any warning. if you send me your .config, then i can try booting using that.
> the current kernel version is : 3.19.0-rc2-next-20141231+
> 

Sorry, my first message was not fully correct. As I tried to bisect
this, I noticed that this warning happens unfortunately not every
boot. And I noticed another strange behavior. If the
same kernel is always booted, the warning happens very seldom. To make
it appear more frequently I booted v3.19-rc2 and
v3.19-rc1-g08b022a9655bf one after another many times. In this case it
happens with probability around 50% during the boot.

my config is attached.

-- 
Best regards,
Andrey Skvortsov

Secure e-mail with gnupg: See http://www.gnupg.org/
PGP Key ID: 0x57A3AEAD



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