[Bug 86702] New: [HSW] slowpath warning in intel_display_power_put

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Nov 25 05:52:45 PST 2014 

https://bugs.freedesktop.org/show_bug.cgi?id=86702

            Bug ID: 86702
           Summary: [HSW] slowpath warning in intel_display_power_put
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: noodles at earth.li
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Kernel 3.18-rc5 (the + is a DVB-T2 driver patch, confined to drivers/media/),
but I've seen it with previous kernels as well. Seems to happen quite a lot,
with different callpaths that always end up in intel_display_power_put. Laptop
is undocked with only the internal LCD operational. Userspace is Debian/testing
(jessie).

First instance on this boot:


Nov 21 08:20:48 mixian kernel: [83274.888687] ------------[ cut here
]------------
Nov 21 08:20:48 mixian kernel: [83274.888693] WARNING: CPU: 1 PID: 865 at
drivers/gpu/drm/i915/intel_pm.c:6590 intel_display_power_put+0x14c/0x160()
Nov 21 08:20:48 mixian kernel: [83274.888694] Modules linked in: ctr ccm si2157
si2168 i2c_mux dvb_usb_cxusb dib0070 dvb_usb dvb_core rc_core binfmt_misc bnep
nfsd auth_rpcgss oid_registry nfs_acl nfs lockd grace fscache sunrpc arc4
snd_hda_codec_hdmi joydev snd_hda_codec_realtek snd_hda_codec_generic iwlmvm
x86_pkg_temp_thermal intel_powerclamp mac80211 btusb pcspkr psmouse serio_raw
hid_multitouch bluetooth i2c_i801 iwlwifi snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep snd_pcm cfg80211 snd_timer xhci_pci xhci_hcd tpm_tis
tpm battery ac evdev processor fuse autofs4 algif_skcipher af_alg hid_generic
usbhid crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel sg
ehci_pci sdhci_pci ehci_hcd thermal i2c_hid hid sdhci_acpi sdhci mmc_core
Nov 21 08:20:48 mixian kernel: [83274.888724] CPU: 1 PID: 865 Comm: Xorg Not
tainted 3.18.0-rc5+ #11
Nov 21 08:20:48 mixian kernel: [83274.888725] Hardware name: Dell Inc. Latitude
E7240/0V120R, BIOS A08 02/18/2014
Nov 21 08:20:48 mixian kernel: [83274.888726]  0000000000000000
0000000000000009 ffffffff8169d202 0000000000000000
Nov 21 08:20:48 mixian kernel: [83274.888727]  ffffffff810a7152
ffff880409ae002c ffff880409ae8810 ffff88041e01b000
Nov 21 08:20:48 mixian kernel: [83274.888729]  0000000000000001
ffff880409ae0000 ffffffff8141d98c ffff8803bd715f80
Nov 21 08:20:48 mixian kernel: [83274.888730] Call Trace:
Nov 21 08:20:48 mixian kernel: [83274.888736]  [<ffffffff8169d202>] ?
dump_stack+0x41/0x51
Nov 21 08:20:48 mixian kernel: [83274.888739]  [<ffffffff810a7152>] ?
warn_slowpath_common+0x72/0x90
Nov 21 08:20:48 mixian kernel: [83274.888741]  [<ffffffff8141d98c>] ?
intel_display_power_put+0x14c/0x160
Nov 21 08:20:48 mixian kernel: [83274.888745]  [<ffffffff8146b0cb>] ?
intel_crtc_control+0x7b/0x100
Nov 21 08:20:48 mixian kernel: [83274.888746]  [<ffffffff8146b1b6>] ?
intel_crtc_update_dpms+0x66/0x80
Nov 21 08:20:48 mixian kernel: [83274.888748]  [<ffffffff81474401>] ?
intel_connector_dpms+0x51/0x70
Nov 21 08:20:48 mixian kernel: [83274.888751]  [<ffffffff81405875>] ?
drm_mode_obj_set_property_ioctl+0x345/0x350
Nov 21 08:20:48 mixian kernel: [83274.888753]  [<ffffffff814058ac>] ?
drm_mode_connector_property_set_ioctl+0x2c/0x40
Nov 21 08:20:48 mixian kernel: [83274.888755]  [<ffffffff813f6d63>] ?
drm_ioctl+0x1c3/0x5a0
Nov 21 08:20:48 mixian kernel: [83274.888759]  [<ffffffff81325448>] ?
lockref_put_or_lock+0x48/0x80
Nov 21 08:20:48 mixian kernel: [83274.888762]  [<ffffffff811efefc>] ?
dput+0x1c/0x1a0
Nov 21 08:20:48 mixian kernel: [83274.888764]  [<ffffffff811ec9f0>] ?
do_vfs_ioctl+0x2d0/0x4a0
Nov 21 08:20:48 mixian kernel: [83274.888766]  [<ffffffff810c131c>] ?
task_work_run+0x9c/0xd0
Nov 21 08:20:48 mixian kernel: [83274.888767]  [<ffffffff811ecc39>] ?
SyS_ioctl+0x79/0x90
Nov 21 08:20:48 mixian kernel: [83274.888770]  [<ffffffff816a373f>] ?
int_signal+0x12/0x17
Nov 21 08:20:48 mixian kernel: [83274.888771]  [<ffffffff816a34d2>] ?
system_call_fastpath+0x12/0x17
Nov 21 08:20:48 mixian kernel: [83274.888772] ---[ end trace 2646903d2d0b00ab
]---
Nov 21 08:20:48 mixian kernel: [83274.888773] ------------[ cut here
]------------

Other more recent instances (same boot, hence tainted):

[165509.209043] ------------[ cut here ]------------
[165509.209050] WARNING: CPU: 3 PID: 771 at
drivers/gpu/drm/i915/intel_pm.c:6594 intel_display_power_put+0xf9/0x160()
[165509.209051] Modules linked in: cdc_acm cpuid ctr ccm si2157 si2168 i2c_mux
dvb_usb_cxusb dib0070 dvb_usb dvb_core rc_core binfmt_misc bnep nfsd
auth_rpcgss oid_registry nfs_acl nfs lockd grace fscache sunrpc arc4
snd_hda_codec_hdmi joydev snd_hda_codec_realtek snd_hda_codec_generic iwlmvm
x86_pkg_temp_thermal intel_powerclamp mac80211 btusb pcspkr psmouse serio_raw
hid_multitouch bluetooth i2c_i801 iwlwifi snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep snd_pcm cfg80211 snd_timer xhci_pci xhci_hcd tpm_tis
tpm battery ac evdev processor fuse autofs4 algif_skcipher af_alg hid_generic
usbhid crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel sg
ehci_pci sdhci_pci ehci_hcd thermal i2c_hid hid sdhci_acpi sdhci mmc_core
[165509.209102] CPU: 3 PID: 771 Comm: systemd-logind Tainted: G        W     
3.18.0-rc5+ #11
[165509.209104] Hardware name: Dell Inc. Latitude E7240/0V120R, BIOS A08
02/18/2014
[165509.209105]  0000000000000000 0000000000000009 ffffffff8169d202
0000000000000000
[165509.209109]  ffffffff810a7152 ffffffff81c82780 ffff880409ae8810
0000000000000000
[165509.209112]  0000000000002000 ffff880409ae0000 ffffffff8141d939
0000000000000041
[165509.209116] Call Trace:
[165509.209121]  [<ffffffff8169d202>] ? dump_stack+0x41/0x51
[165509.209127]  [<ffffffff810a7152>] ? warn_slowpath_common+0x72/0x90
[165509.209130]  [<ffffffff8141d939>] ? intel_display_power_put+0xf9/0x160
[165509.209135]  [<ffffffff81494ec6>] ? intel_hdmi_set_edid+0x56/0xe0
[165509.209138]  [<ffffffff81495038>] ? intel_hdmi_detect+0x48/0xa0
[165509.209142]  [<ffffffff813fda63>] ? status_show+0x33/0x70
[165509.209146]  [<ffffffff814a9c47>] ? dev_attr_show+0x17/0x50
[165509.209150]  [<ffffffff8124a22a>] ? sysfs_kf_seq_show+0xaa/0x150
[165509.209154]  [<ffffffff811fbb7d>] ? seq_read+0xcd/0x3c0
[165509.209158]  [<ffffffff811d97da>] ? vfs_read+0x8a/0x170
[165509.209161]  [<ffffffff811da2bd>] ? SyS_read+0x3d/0xa0
[165509.209166]  [<ffffffff816a34d2>] ? system_call_fastpath+0x12/0x17
[165509.209168] ---[ end trace 2646903d2d0b012d ]---

[167256.763647] ------------[ cut here ]------------
[167256.763653] WARNING: CPU: 3 PID: 865 at
drivers/gpu/drm/i915/intel_pm.c:6590
 intel_display_power_put+0x14c/0x160()
[167256.763655] Modules linked in: cdc_acm cpuid ctr ccm si2157 si2168 i2c_mux
d
vb_usb_cxusb dib0070 dvb_usb dvb_core rc_core binfmt_misc bnep nfsd auth_rpcgss 
oid_registry nfs_acl nfs lockd grace fscache sunrpc arc4 snd_hda_codec_hdmi
joydev snd_hda_codec_realtek snd_hda_codec_generic iwlmvm x86_pkg_temp_thermal
intel_powerclamp mac80211 btusb pcspkr psmouse serio_raw hid_multitouch
bluetooth i2c_i801 iwlwifi snd_hda_intel snd_hda_controller snd_hda_codec
snd_hwdep snd_pcm cfg80211 snd_timer xhci_pci xhci_hcd tpm_tis tpm battery ac
evdev processor fuse autofs4 algif_skcipher af_alg hid_generic usbhid
crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel sg ehci_pci
sdhci_pci ehci_hcd thermal i2c_hid hid sdhci_acpi sdhci mmc_core
[167256.763687] CPU: 3 PID: 865 Comm: Xorg Tainted: G        W      3.18.0-rc5+
#11
[167256.763688] Hardware name: Dell Inc. Latitude E7240/0V120R, BIOS A08
02/18/2014
[167256.763689]  0000000000000000 0000000000000009 ffffffff8169d202
0000000000000000
[167256.763691]  ffffffff810a7152 ffff880409ae002c ffff880409ae8810
0000000000000000
[167256.763693]  0000000000000000 ffff880409ae0000 ffffffff8141d98c
0000000000000000
[167256.763694] Call Trace:
[167256.763699]  [<ffffffff8169d202>] ? dump_stack+0x41/0x51
[167256.763703]  [<ffffffff810a7152>] ? warn_slowpath_common+0x72/0x90
[167256.763705]  [<ffffffff8141d98c>] ? intel_display_power_put+0x14c/0x160
[167256.763708]  [<ffffffff8148bc0f>] ? intel_edp_backlight_power+0x2f/0xa0
[167256.763711]  [<ffffffff8149abc2>] ?
intel_backlight_device_update_status+0xe2/0x160
[167256.763713]  [<ffffffff81374a09>] ? brightness_store+0xc9/0xe0
[167256.763716]  [<ffffffff812494e3>] ? kernfs_fop_write+0xe3/0x160
[167256.763720]  [<ffffffff811d996d>] ? vfs_write+0xad/0x1e0
[167256.763721]  [<ffffffff811da35d>] ? SyS_write+0x3d/0xa0
[167256.763724]  [<ffffffff816a34d2>] ? system_call_fastpath+0x12/0x17
[167256.763725] ---[ end trace 2646903d2d0b0132 ]---
[167256.763728] ------------[ cut here ]------------

[168741.159842] ------------[ cut here ]------------
[168741.159848] WARNING: CPU: 2 PID: 16909 at
drivers/gpu/drm/i915/intel_pm.c:6590 intel_display_power_put+0x14c/0x160()
[168741.159849] Modules linked in: cdc_acm cpuid ctr ccm si2157 si2168 i2c_mux
dvb_usb_cxusb dib0070 dvb_usb dvb_core rc_core binfmt_misc bnep nfsd
auth_rpcgss oid_registry nfs_acl nfs lockd grace fscache sunrpc arc4
snd_hda_codec_hdmi joydev snd_hda_codec_realtek snd_hda_codec_generic iwlmvm
x86_pkg_temp_thermal intel_powerclamp mac80211 btusb pcspkr psmouse serio_raw
hid_multitouch bluetooth i2c_i801 iwlwifi snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep snd_pcm cfg80211 snd_timer xhci_pci xhci_hcd tpm_tis
tpm battery ac evdev processor fuse autofs4 algif_skcipher af_alg hid_generic
usbhid crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel sg
ehci_pci sdhci_pci ehci_hcd thermal i2c_hid hid sdhci_acpi sdhci mmc_core
[168741.159882] CPU: 2 PID: 16909 Comm: kworker/2:3 Tainted: G        W     
3.18.0-rc5+ #11
[168741.159883] Hardware name: Dell Inc. Latitude E7240/0V120R, BIOS A08
02/18/2014
[168741.159887] Workqueue: events edp_panel_vdd_work
[168741.159888]  0000000000000000 0000000000000009 ffffffff8169d202
0000000000000000
[168741.159890]  ffffffff810a7152 ffff880409ae002c ffff880409ae8810
ffff88041eb127c0
[168741.159891]  0000000000000000 ffff880409ae0000 ffffffff8141d98c
ffff8804085a7508
[168741.159893] Call Trace:
[168741.159898]  [<ffffffff8169d202>] ? dump_stack+0x41/0x51
[168741.159901]  [<ffffffff810a7152>] ? warn_slowpath_common+0x72/0x90
[168741.159903]  [<ffffffff8141d98c>] ? intel_display_power_put+0x14c/0x160
[168741.159906]  [<ffffffff810bdd22>] ? process_one_work+0x142/0x3e0
[168741.159908]  [<ffffffff810be293>] ? worker_thread+0x63/0x480
[168741.159910]  [<ffffffff810be230>] ? rescuer_thread+0x270/0x270
[168741.159912]  [<ffffffff810c28fe>] ? kthread+0xce/0xf0
[168741.159914]  [<ffffffff810c2830>] ? kthread_create_on_node+0x180/0x180
[168741.159916]  [<ffffffff816a342c>] ? ret_from_fork+0x7c/0xb0
[168741.159918]  [<ffffffff810c2830>] ? kthread_create_on_node+0x180/0x180
[168741.159919] ---[ end trace 2646903d2d0b014d ]---

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20141125/0f7c3200/attachment-0001.html>

More information about the intel-gfx-bugs mailing list