Re: [drm/i915/dp] 4a8d79901d: WARNING:at_drivers/gpu/drm/i915/display/intel_display_power.c:#assert_can_disable_lcpll[i915]
Could you retest this against the latest drm-tip? I pushed something that I
think might fix this
On Thu, 2021-03-25 at 21:53 +0800, Oliver Sang wrote:
> Hi, Lyude,
>
> On Tue, Mar 23, 2021 at 01:27:29PM -0400, Lyude Paul wrote:
> > BTW Oliver - I'm still happy to look at this issue, I just need the extra
> > logs I
> > mentioned below in order to figure out what's going on here
>
> I enabled "drm.debug=0x16 log_buf_len=5M" and got attached kmsg.xz for
> 4a8d79901d.
> hope it's useful.
>
> >
> > On Thu, 2021-03-18 at 13:16 -0400, Lyude Paul wrote:
> > > Well this is surprising, because I had been pretty sure we had asked
> > > someone
> > > at
> > > Intel to test that this patch worked on samus and they had said that it
> > > did.
> > >
> > > Is there any way you can get me the kernel messages from this failure with
> > > drm.debug=0x16 log_buf_len=5M added to the kernel commandline? It's hard
> > > to
> > > see
> > > what's actually going on here that's causing this issue to still reoccur.
> > >
> > > Also adding Tomi P Sarvela onto this thread, since they were the ones who
> > > originally tested this
> > >
> > > On Thu, 2021-03-18 at 10:13 +0800, Oliver Sang wrote:
> > > > Hi Lyude, sorry for later.
> > > >
> > > > before we send out the report, we also tested fe7d52bccab6, the issue
> > > > still
> > > > exists on it.
> > > > attached one kmsg-fe7d52bccab6.xz FYI.
> > > >
> > > > we also tested on latest v5.12-rc3, also exists.
> > > > attached kmsg-v5.12-rc3.xz FYI.
> > > >
> > > >
> > > >
> > > > On Fri, Feb 05, 2021 at 02:53:11PM -0500, Lyude Paul wrote:
> > > > > Am I right in assuming this is likely a very delayed test result from
> > > > > before:
> > > > >
> > > > > fe7d52bccab6 ("drm/i915/dp: Don't use DPCD backlights that need PWM
> > > > > enable/disable")
> > > > >
> > > > > Made it into the kernel? I see that there's a PWM being left on, which
> > > > > was
> > > > > the
> > > > > same issue we were seeing on fi-bdw-samus
> > > > >
> > > > > On Thu, 2021-02-04 at 17:02 +0800, kernel test robot wrote:
> > > > > >
> > > > > > Greeting,
> > > > > >
> > > > > > FYI, we noticed the following commit (built with gcc-9):
> > > > > >
> > > > > > commit: 4a8d79901d5bed0812d272c372aa40282937b50f ("drm/i915/dp:
> > > > > > Enable
> > > > > > Intel's
> > > > > > HDR backlight interface (only SDR for now)")
> > > > > > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git mas
> > > > > > ter
> > > > > >
> > > > > >
> > > > > > in testcase: suspend-stress
> > > > > > version:
> > > > > > with following parameters:
> > > > > >
> > > > > > mode: freeze
> > > > > > iterations: 10
> > > > > >
> > > > > >
> > > > > >
> > > > > > on test machine: 4 threads Broadwell-Y with 8G memory
> > > > > >
> > > > > > caused below changes (please refer to attached dmesg/kmsg for entire
> > > > > > log/backtrace):
> > > > > >
> > > > > >
> > > > > >
> > > > > > If you fix the issue, kindly add following tag
> > > > > > Reported-by: kernel test robot
> > > > > >
> > > > > >
> > > > > > kern :warn : [ 21.137894] [ cut here ]
> > > > > > kern :warn : [ 21.137897] CPU PWM1 enabled
> > > > > > kern :warn : [ 21.137930] WARNING: CPU: 3 PID: 575 at
> > > > > > drivers/gpu/drm/i915/display/intel_display_power.c:4902
> > > > > > assert_can_disable_lcpll+0x335/0x3c0 [i915]
> > > > > > kern :warn : [ 21.138084] Modules linked in: sd_mod t10_pi sg
> > > > > > x86_pkg_temp_thermal intel_powerclamp i915 hid_rmi rmi_core
> > > > > > hid_multitouch
> > > > > > coretemp intel_ra
> > > > > > pl_msr crct10dif_pclmul wmi_bmof crc32_pclmul intel_gtt crc32c_intel
> > > > > > ghash_clmulni_intel rapl drm_kms_helper intel_cstate ahci libahci
> > > > > > serio_raw
> > > > > > mei_me proces
> > > > > > sor_thermal_device intel_uncore processor_thermal_rfim syscopyarea
> > > > > > sysfillrect
> > > > > > intel_soc_dts_iosf sysimgblt intel_pch_thermal hid_sensor_custom
> > > > > > fb_sys_fops
> > > > > > li
> > > > > > bata bcma processor_thermal_mbox joydev mei drm
> > > > > > processor_thermal_rapl
> > > > > > intel_rapl_common int340x_thermal_zone i2c_hid ideapad_laptop
> > > > > > sparse_keymap
> > > > > > wmi rfkill
> > > > > > video int3400_thermal acpi_thermal_rel i2c_designware_platform
> > > > > > dw_dmac
> > > > > > i2c_designware_core acpi_pad ip_tables
> > > > > > kern :warn : [ 21.138148] CPU: 3 PID: 575 Comm: kworker/u8:6
> > > > > > Tainted:
> > > > > > G W I 5.11.0-rc2-00745-g4a8d79901d5b #1
> > > > > > kern :warn : [ 21.138153] Hardware name: LENOVO 80HE/VIUU4, BIOS
> > > > > > A6CN38WW
> > > > > > 09/30/2014
> > > > > > kern :warn : [ 21.138155] Workqueue: events_unbound
> > > > > > async_run_entry_fn
> > > > > > kern :warn : [ 21.138161] RIP:
> > > > > > 0010:assert_can_disable_lcpll+0x335/0x3c0
> > > > > > [i915]
> > > > > > kern :info : [ 21.138263] ahci :00:1f.2:
> > > > > >
Re: [drm/i915/dp] 4a8d79901d: WARNING:at_drivers/gpu/drm/i915/display/intel_display_power.c:#assert_can_disable_lcpll[i915]
BTW Oliver - I'm still happy to look at this issue, I just need the extra logs I
mentioned below in order to figure out what's going on here
On Thu, 2021-03-18 at 13:16 -0400, Lyude Paul wrote:
> Well this is surprising, because I had been pretty sure we had asked someone
> at
> Intel to test that this patch worked on samus and they had said that it did.
>
> Is there any way you can get me the kernel messages from this failure with
> drm.debug=0x16 log_buf_len=5M added to the kernel commandline? It's hard to
> see
> what's actually going on here that's causing this issue to still reoccur.
>
> Also adding Tomi P Sarvela onto this thread, since they were the ones who
> originally tested this
>
> On Thu, 2021-03-18 at 10:13 +0800, Oliver Sang wrote:
> > Hi Lyude, sorry for later.
> >
> > before we send out the report, we also tested fe7d52bccab6, the issue still
> > exists on it.
> > attached one kmsg-fe7d52bccab6.xz FYI.
> >
> > we also tested on latest v5.12-rc3, also exists.
> > attached kmsg-v5.12-rc3.xz FYI.
> >
> >
> >
> > On Fri, Feb 05, 2021 at 02:53:11PM -0500, Lyude Paul wrote:
> > > Am I right in assuming this is likely a very delayed test result from
> > > before:
> > >
> > > fe7d52bccab6 ("drm/i915/dp: Don't use DPCD backlights that need PWM
> > > enable/disable")
> > >
> > > Made it into the kernel? I see that there's a PWM being left on, which was
> > > the
> > > same issue we were seeing on fi-bdw-samus
> > >
> > > On Thu, 2021-02-04 at 17:02 +0800, kernel test robot wrote:
> > > >
> > > > Greeting,
> > > >
> > > > FYI, we noticed the following commit (built with gcc-9):
> > > >
> > > > commit: 4a8d79901d5bed0812d272c372aa40282937b50f ("drm/i915/dp: Enable
> > > > Intel's
> > > > HDR backlight interface (only SDR for now)")
> > > > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
> > > >
> > > >
> > > > in testcase: suspend-stress
> > > > version:
> > > > with following parameters:
> > > >
> > > > mode: freeze
> > > > iterations: 10
> > > >
> > > >
> > > >
> > > > on test machine: 4 threads Broadwell-Y with 8G memory
> > > >
> > > > caused below changes (please refer to attached dmesg/kmsg for entire
> > > > log/backtrace):
> > > >
> > > >
> > > >
> > > > If you fix the issue, kindly add following tag
> > > > Reported-by: kernel test robot
> > > >
> > > >
> > > > kern :warn : [ 21.137894] [ cut here ]
> > > > kern :warn : [ 21.137897] CPU PWM1 enabled
> > > > kern :warn : [ 21.137930] WARNING: CPU: 3 PID: 575 at
> > > > drivers/gpu/drm/i915/display/intel_display_power.c:4902
> > > > assert_can_disable_lcpll+0x335/0x3c0 [i915]
> > > > kern :warn : [ 21.138084] Modules linked in: sd_mod t10_pi sg
> > > > x86_pkg_temp_thermal intel_powerclamp i915 hid_rmi rmi_core
> > > > hid_multitouch
> > > > coretemp intel_ra
> > > > pl_msr crct10dif_pclmul wmi_bmof crc32_pclmul intel_gtt crc32c_intel
> > > > ghash_clmulni_intel rapl drm_kms_helper intel_cstate ahci libahci
> > > > serio_raw
> > > > mei_me proces
> > > > sor_thermal_device intel_uncore processor_thermal_rfim syscopyarea
> > > > sysfillrect
> > > > intel_soc_dts_iosf sysimgblt intel_pch_thermal hid_sensor_custom
> > > > fb_sys_fops
> > > > li
> > > > bata bcma processor_thermal_mbox joydev mei drm processor_thermal_rapl
> > > > intel_rapl_common int340x_thermal_zone i2c_hid ideapad_laptop
> > > > sparse_keymap
> > > > wmi rfkill
> > > > video int3400_thermal acpi_thermal_rel i2c_designware_platform dw_dmac
> > > > i2c_designware_core acpi_pad ip_tables
> > > > kern :warn : [ 21.138148] CPU: 3 PID: 575 Comm: kworker/u8:6
> > > > Tainted:
> > > > G W I 5.11.0-rc2-00745-g4a8d79901d5b #1
> > > > kern :warn : [ 21.138153] Hardware name: LENOVO 80HE/VIUU4, BIOS
> > > > A6CN38WW
> > > > 09/30/2014
> > > > kern :warn : [ 21.138155] Workqueue: events_unbound
> > > > async_run_entry_fn
> > > > kern :warn : [ 21.138161] RIP:
> > > > 0010:assert_can_disable_lcpll+0x335/0x3c0
> > > > [i915]
> > > > kern :info : [ 21.138263] ahci :00:1f.2:
> > > > pci_pm_suspend_late+0x0/0x40
> > > > returned 0 after 0 usecs
> > > > kern :warn : [ 21.138296] Code: c0 75 22 e8 8d 61 cb ff e9 f3 fd ff
> > > > ff
> > > > e8
> > > > fd bc 6a c1 0f 0b e9 0c fd ff ff e8 f1 bc 6a c1 0f 0b e9 05 fe ff ff e8
> > > > e5
> > > > bc
> > > > 6a c1 <0f> 0b e9 cf fd ff ff e8 d9 bc 6a c1 0f 0b e9 a2 fd ff ff e8 cd
> > > > bc
> > > > kern :warn : [ 21.138300] RSP: 0018:c96f3d58 EFLAGS:
> > > > 00010282
> > > > kern :warn : [ 21.138304] RAX: RBX:
> > > > 8881451002e8
> > > > RCX:
> > > > 0027
> > > > kern :warn : [ 21.138307] RDX: 0027 RSI:
> > > > 0002
> > > > RDI:
> > > > 888249397cf8
> > > > kern :warn : [ 21.138310] RBP: 88814510 R08:
> > > > 888249397cf0
> > > > R09:
> > > > c96f3cf0
> > > > kern :warn : [ 21.138313] R10:
RE: [drm/i915/dp] 4a8d79901d: WARNING:at_drivers/gpu/drm/i915/display/intel_display_power.c:#assert_can_disable_lcpll[i915]
linux-5.12-rc3 has fixed at least one long-standing issue with BDW-samus
(Google Chromebook Pixel 2015 I think):
https://intel-gfx-ci.01.org/tree/linus/combined-alt.html
https://intel-gfx-ci.01.org/tree/linus/fi-bdw-samus.html
I can test anything on this type of host, just explain me the reproduction
steps.
Regards,
Tomi
> From: Lyude Paul
>
> Subject: Re: [drm/i915/dp] 4a8d79901d:
> WARNING:at_drivers/gpu/drm/i915/display/intel_display_power.c:#assert_
> can_disable_lcpll[i915]
>
> Well this is surprising, because I had been pretty sure we had asked
> someone at
> Intel to test that this patch worked on samus and they had said that it did.
>
> Is there any way you can get me the kernel messages from this failure with
> drm.debug=0x16 log_buf_len=5M added to the kernel commandline? It's
> hard to see
> what's actually going on here that's causing this issue to still reoccur.
>
> Also adding Tomi P Sarvela onto this thread, since they were the ones who
> originally tested this
>
> On Thu, 2021-03-18 at 10:13 +0800, Oliver Sang wrote:
> > Hi Lyude, sorry for later.
> >
> > before we send out the report, we also tested fe7d52bccab6, the issue still
> > exists on it.
> > attached one kmsg-fe7d52bccab6.xz FYI.
> >
> > we also tested on latest v5.12-rc3, also exists.
> > attached kmsg-v5.12-rc3.xz FYI.
> >
> >
> >
> > On Fri, Feb 05, 2021 at 02:53:11PM -0500, Lyude Paul wrote:
> > > Am I right in assuming this is likely a very delayed test result from
> > > before:
> > >
> > > fe7d52bccab6 ("drm/i915/dp: Don't use DPCD backlights that need PWM
> > > enable/disable")
> > >
> > > Made it into the kernel? I see that there's a PWM being left on, which
> was
> > > the
> > > same issue we were seeing on fi-bdw-samus
> > >
> > > On Thu, 2021-02-04 at 17:02 +0800, kernel test robot wrote:
> > > >
> > > > Greeting,
> > > >
> > > > FYI, we noticed the following commit (built with gcc-9):
> > > >
> > > > commit: 4a8d79901d5bed0812d272c372aa40282937b50f ("drm/i915/dp:
> Enable
> > > > Intel's
> > > > HDR backlight interface (only SDR for now)")
> > > > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
> > > >
> > > >
> > > > in testcase: suspend-stress
> > > > version:
> > > > with following parameters:
> > > >
> > > > mode: freeze
> > > > iterations: 10
> > > >
> > > >
> > > >
> > > > on test machine: 4 threads Broadwell-Y with 8G memory
> > > >
> > > > caused below changes (please refer to attached dmesg/kmsg for entire
> > > > log/backtrace):
> > > >
> > > >
> > > >
> > > > If you fix the issue, kindly add following tag
> > > > Reported-by: kernel test robot
> > > >
> > > >
> > > > kern :warn : [ 21.137894] [ cut here ]
> > > > kern :warn : [ 21.137897] CPU PWM1 enabled
> > > > kern :warn : [ 21.137930] WARNING: CPU: 3 PID: 575 at
> > > > drivers/gpu/drm/i915/display/intel_display_power.c:4902
> > > > assert_can_disable_lcpll+0x335/0x3c0 [i915]
> > > > kern :warn : [ 21.138084] Modules linked in: sd_mod t10_pi sg
> > > > x86_pkg_temp_thermal intel_powerclamp i915 hid_rmi rmi_core
> hid_multitouch
> > > > coretemp intel_ra
> > > > pl_msr crct10dif_pclmul wmi_bmof crc32_pclmul intel_gtt crc32c_intel
> > > > ghash_clmulni_intel rapl drm_kms_helper intel_cstate ahci libahci
> > > > serio_raw
> > > > mei_me proces
> > > > sor_thermal_device intel_uncore processor_thermal_rfim syscopyarea
> > > > sysfillrect
> > > > intel_soc_dts_iosf sysimgblt intel_pch_thermal hid_sensor_custom
> > > > fb_sys_fops
> > > > li
> > > > bata bcma processor_thermal_mbox joydev mei drm
> processor_thermal_rapl
> > > > intel_rapl_common int340x_thermal_zone i2c_hid ideapad_laptop
> > > > sparse_keymap
> > > > wmi rfkill
> > > > video int3400_thermal acpi_thermal_rel i2c_designware_platform
> dw_dmac
> > > > i2c_designware_core acpi_pad ip_tables
> > > > kern :warn : [ 21.138148] CPU: 3 PID: 575 Comm: kworker/u8:6
> Tainted:
> > > > G W I 5.11.0-rc2-00745-g4a8d79901d5b #1
> > > > kern :warn : [ 21.138153] Hardware name: LENOVO 80HE/VIUU4, BIOS
> > > > A6CN38WW
> > > > 09/30/2014
> > > > kern :warn : [ 21.138155] Workqueue: events_unbound
> async_run_entry_fn
> > > > kern :warn : [ 21.138161] RIP:
> > > > 0010:assert_can_disable_lcpll+0x335/0x3c0
> > > > [i915]
> > > > kern :info : [ 21.138263] ahci :00:1f.2:
> > > > pci_pm_suspend_late+0x0/0x40
> > > > returned 0 after 0 usecs
> > > > kern :warn : [ 21.138296] Code: c0 75 22 e8 8d 61 cb ff e9 f3 fd ff
> > > > ff
> > > > e8
> > > > fd bc 6a c1 0f 0b e9 0c fd ff ff e8 f1 bc 6a c1 0f 0b e9 05 fe ff ff e8
> > > > e5
> > > > bc
> > > > 6a c1 <0f> 0b e9 cf fd ff ff e8 d9 bc 6a c1 0f 0b e9 a2 fd ff ff e8 cd
> > > > bc
> > > > kern :warn : [ 21.138300] RSP: 0018:c96f3d58 EFLAGS:
> 00010282
> > > > kern :warn : [ 21.138304] RAX: RBX:
> 8881451002e8
> > > > RCX:
> > > > 0027
> > > > kern :warn : [ 21.138307] RDX:
Re: [drm/i915/dp] 4a8d79901d: WARNING:at_drivers/gpu/drm/i915/display/intel_display_power.c:#assert_can_disable_lcpll[i915]
Well this is surprising, because I had been pretty sure we had asked someone at
Intel to test that this patch worked on samus and they had said that it did.
Is there any way you can get me the kernel messages from this failure with
drm.debug=0x16 log_buf_len=5M added to the kernel commandline? It's hard to see
what's actually going on here that's causing this issue to still reoccur.
Also adding Tomi P Sarvela onto this thread, since they were the ones who
originally tested this
On Thu, 2021-03-18 at 10:13 +0800, Oliver Sang wrote:
> Hi Lyude, sorry for later.
>
> before we send out the report, we also tested fe7d52bccab6, the issue still
> exists on it.
> attached one kmsg-fe7d52bccab6.xz FYI.
>
> we also tested on latest v5.12-rc3, also exists.
> attached kmsg-v5.12-rc3.xz FYI.
>
>
>
> On Fri, Feb 05, 2021 at 02:53:11PM -0500, Lyude Paul wrote:
> > Am I right in assuming this is likely a very delayed test result from
> > before:
> >
> > fe7d52bccab6 ("drm/i915/dp: Don't use DPCD backlights that need PWM
> > enable/disable")
> >
> > Made it into the kernel? I see that there's a PWM being left on, which was
> > the
> > same issue we were seeing on fi-bdw-samus
> >
> > On Thu, 2021-02-04 at 17:02 +0800, kernel test robot wrote:
> > >
> > > Greeting,
> > >
> > > FYI, we noticed the following commit (built with gcc-9):
> > >
> > > commit: 4a8d79901d5bed0812d272c372aa40282937b50f ("drm/i915/dp: Enable
> > > Intel's
> > > HDR backlight interface (only SDR for now)")
> > > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
> > >
> > >
> > > in testcase: suspend-stress
> > > version:
> > > with following parameters:
> > >
> > > mode: freeze
> > > iterations: 10
> > >
> > >
> > >
> > > on test machine: 4 threads Broadwell-Y with 8G memory
> > >
> > > caused below changes (please refer to attached dmesg/kmsg for entire
> > > log/backtrace):
> > >
> > >
> > >
> > > If you fix the issue, kindly add following tag
> > > Reported-by: kernel test robot
> > >
> > >
> > > kern :warn : [ 21.137894] [ cut here ]
> > > kern :warn : [ 21.137897] CPU PWM1 enabled
> > > kern :warn : [ 21.137930] WARNING: CPU: 3 PID: 575 at
> > > drivers/gpu/drm/i915/display/intel_display_power.c:4902
> > > assert_can_disable_lcpll+0x335/0x3c0 [i915]
> > > kern :warn : [ 21.138084] Modules linked in: sd_mod t10_pi sg
> > > x86_pkg_temp_thermal intel_powerclamp i915 hid_rmi rmi_core hid_multitouch
> > > coretemp intel_ra
> > > pl_msr crct10dif_pclmul wmi_bmof crc32_pclmul intel_gtt crc32c_intel
> > > ghash_clmulni_intel rapl drm_kms_helper intel_cstate ahci libahci
> > > serio_raw
> > > mei_me proces
> > > sor_thermal_device intel_uncore processor_thermal_rfim syscopyarea
> > > sysfillrect
> > > intel_soc_dts_iosf sysimgblt intel_pch_thermal hid_sensor_custom
> > > fb_sys_fops
> > > li
> > > bata bcma processor_thermal_mbox joydev mei drm processor_thermal_rapl
> > > intel_rapl_common int340x_thermal_zone i2c_hid ideapad_laptop
> > > sparse_keymap
> > > wmi rfkill
> > > video int3400_thermal acpi_thermal_rel i2c_designware_platform dw_dmac
> > > i2c_designware_core acpi_pad ip_tables
> > > kern :warn : [ 21.138148] CPU: 3 PID: 575 Comm: kworker/u8:6 Tainted:
> > > G W I 5.11.0-rc2-00745-g4a8d79901d5b #1
> > > kern :warn : [ 21.138153] Hardware name: LENOVO 80HE/VIUU4, BIOS
> > > A6CN38WW
> > > 09/30/2014
> > > kern :warn : [ 21.138155] Workqueue: events_unbound async_run_entry_fn
> > > kern :warn : [ 21.138161] RIP:
> > > 0010:assert_can_disable_lcpll+0x335/0x3c0
> > > [i915]
> > > kern :info : [ 21.138263] ahci :00:1f.2:
> > > pci_pm_suspend_late+0x0/0x40
> > > returned 0 after 0 usecs
> > > kern :warn : [ 21.138296] Code: c0 75 22 e8 8d 61 cb ff e9 f3 fd ff ff
> > > e8
> > > fd bc 6a c1 0f 0b e9 0c fd ff ff e8 f1 bc 6a c1 0f 0b e9 05 fe ff ff e8 e5
> > > bc
> > > 6a c1 <0f> 0b e9 cf fd ff ff e8 d9 bc 6a c1 0f 0b e9 a2 fd ff ff e8 cd bc
> > > kern :warn : [ 21.138300] RSP: 0018:c96f3d58 EFLAGS: 00010282
> > > kern :warn : [ 21.138304] RAX: RBX: 8881451002e8
> > > RCX:
> > > 0027
> > > kern :warn : [ 21.138307] RDX: 0027 RSI: 0002
> > > RDI:
> > > 888249397cf8
> > > kern :warn : [ 21.138310] RBP: 88814510 R08: 888249397cf0
> > > R09:
> > > c96f3cf0
> > > kern :warn : [ 21.138313] R10: 0001 R11: 3030302035313969
> > > R12:
> > > 8881451007f0
> > > kern :warn : [ 21.138316] R13: 888145106c60 R14: 0002
> > > R15:
> > >
> > > kern :warn : [ 21.138319] FS: ()
> > > GS:88824938() knlGS:
> > > kern :warn : [ 21.138322] CS: 0010 DS: ES: CR0:
> > > 80050033
> > > kern :warn : [ 21.138325] CR2: 557c22ec68a0 CR3: 04c0a003
> > > CR4:
> > > 003706e0
> > >
Re: [drm/i915/dp] 4a8d79901d: WARNING:at_drivers/gpu/drm/i915/display/intel_display_power.c:#assert_can_disable_lcpll[i915]
Am I right in assuming this is likely a very delayed test result from before:
fe7d52bccab6 ("drm/i915/dp: Don't use DPCD backlights that need PWM
enable/disable")
Made it into the kernel? I see that there's a PWM being left on, which was the
same issue we were seeing on fi-bdw-samus
On Thu, 2021-02-04 at 17:02 +0800, kernel test robot wrote:
>
> Greeting,
>
> FYI, we noticed the following commit (built with gcc-9):
>
> commit: 4a8d79901d5bed0812d272c372aa40282937b50f ("drm/i915/dp: Enable Intel's
> HDR backlight interface (only SDR for now)")
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
>
>
> in testcase: suspend-stress
> version:
> with following parameters:
>
> mode: freeze
> iterations: 10
>
>
>
> on test machine: 4 threads Broadwell-Y with 8G memory
>
> caused below changes (please refer to attached dmesg/kmsg for entire
> log/backtrace):
>
>
>
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot
>
>
> kern :warn : [ 21.137894] [ cut here ]
> kern :warn : [ 21.137897] CPU PWM1 enabled
> kern :warn : [ 21.137930] WARNING: CPU: 3 PID: 575 at
> drivers/gpu/drm/i915/display/intel_display_power.c:4902
> assert_can_disable_lcpll+0x335/0x3c0 [i915]
> kern :warn : [ 21.138084] Modules linked in: sd_mod t10_pi sg
> x86_pkg_temp_thermal intel_powerclamp i915 hid_rmi rmi_core hid_multitouch
> coretemp intel_ra
> pl_msr crct10dif_pclmul wmi_bmof crc32_pclmul intel_gtt crc32c_intel
> ghash_clmulni_intel rapl drm_kms_helper intel_cstate ahci libahci serio_raw
> mei_me proces
> sor_thermal_device intel_uncore processor_thermal_rfim syscopyarea sysfillrect
> intel_soc_dts_iosf sysimgblt intel_pch_thermal hid_sensor_custom fb_sys_fops
> li
> bata bcma processor_thermal_mbox joydev mei drm processor_thermal_rapl
> intel_rapl_common int340x_thermal_zone i2c_hid ideapad_laptop sparse_keymap
> wmi rfkill
> video int3400_thermal acpi_thermal_rel i2c_designware_platform dw_dmac
> i2c_designware_core acpi_pad ip_tables
> kern :warn : [ 21.138148] CPU: 3 PID: 575 Comm: kworker/u8:6 Tainted:
> G W I 5.11.0-rc2-00745-g4a8d79901d5b #1
> kern :warn : [ 21.138153] Hardware name: LENOVO 80HE/VIUU4, BIOS A6CN38WW
> 09/30/2014
> kern :warn : [ 21.138155] Workqueue: events_unbound async_run_entry_fn
> kern :warn : [ 21.138161] RIP: 0010:assert_can_disable_lcpll+0x335/0x3c0
> [i915]
> kern :info : [ 21.138263] ahci :00:1f.2: pci_pm_suspend_late+0x0/0x40
> returned 0 after 0 usecs
> kern :warn : [ 21.138296] Code: c0 75 22 e8 8d 61 cb ff e9 f3 fd ff ff e8
> fd bc 6a c1 0f 0b e9 0c fd ff ff e8 f1 bc 6a c1 0f 0b e9 05 fe ff ff e8 e5 bc
> 6a c1 <0f> 0b e9 cf fd ff ff e8 d9 bc 6a c1 0f 0b e9 a2 fd ff ff e8 cd bc
> kern :warn : [ 21.138300] RSP: 0018:c96f3d58 EFLAGS: 00010282
> kern :warn : [ 21.138304] RAX: RBX: 8881451002e8 RCX:
> 0027
> kern :warn : [ 21.138307] RDX: 0027 RSI: 0002 RDI:
> 888249397cf8
> kern :warn : [ 21.138310] RBP: 88814510 R08: 888249397cf0 R09:
> c96f3cf0
> kern :warn : [ 21.138313] R10: 0001 R11: 3030302035313969 R12:
> 8881451007f0
> kern :warn : [ 21.138316] R13: 888145106c60 R14: 0002 R15:
>
> kern :warn : [ 21.138319] FS: ()
> GS:88824938() knlGS:
> kern :warn : [ 21.138322] CS: 0010 DS: ES: CR0:
> 80050033
> kern :warn : [ 21.138325] CR2: 557c22ec68a0 CR3: 04c0a003 CR4:
> 003706e0
> kern :warn : [ 21.138329] Call Trace:
> kern :warn : [ 21.138334] hsw_disable_lcpll+0x22/0x280 [i915]
> kern :warn : [ 21.138479] i915_drm_suspend_late+0x5e/0x100 [i915]
> kern :warn : [ 21.138578] ? pci_pm_poweroff_late+0x40/0x40
> kern :warn : [ 21.138582] dpm_run_callback+0x4c/0x140
> kern :warn : [ 21.138590] __device_suspend_late+0x98/0x1a0
> kern :warn : [ 21.138596] async_suspend_late+0x1b/0xa0
> kern :warn : [ 21.138602] async_run_entry_fn+0x39/0x160
> kern :warn : [ 21.138608] process_one_work+0x1ed/0x3c0
> kern :warn : [ 21.138612] worker_thread+0x50/0x3c0
> kern :warn : [ 21.138617] ? process_one_work+0x3c0/0x3c0
> kern :warn : [ 21.138620] kthread+0x116/0x160
> kern :warn : [ 21.138626] ? kthread_park+0xa0/0xa0
> kern :warn : [ 21.138631] ret_from_fork+0x22/0x30
> kern :warn : [ 21.138640] ---[ end trace a93fe4d40a5a37bb ]---
>
>
>
> To reproduce:
>
> git clone https://github.com/intel/lkp-tests.git
> cd lkp-tests
> bin/lkp install job.yaml # job file is attached in this email
> bin/lkp run job.yaml
>
>
>
> Thanks,
> Oliver Sang
>
--
Sincerely,
Lyude Paul (she/her)
Software Engineer at Red Hat
Note: I deal with a lot of emails and have a lot of bugs on my plate. If
