* Warning triggered in drm_dp_delayed_destroy_work workqueue
@ 2020-06-25 10:22 Luis Henriques
2020-06-26 13:40 ` Daniel Vetter
0 siblings, 1 reply; 4+ messages in thread
From: Luis Henriques @ 2020-06-25 10:22 UTC (permalink / raw)
To: Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann,
David Airlie, Daniel Vetter
Cc: dri-devel, linux-kernel
Hi!
I've been seeing this warning occasionally, not sure if it has been
reported yet. It's not a regression as I remember seeing it in, at least,
5.7.
Anyway, here it is:
------------[ cut here ]------------
sysfs group 'power' not found for kobject 'i2c-7'
WARNING: CPU: 1 PID: 17996 at fs/sysfs/group.c:279 sysfs_remove_group+0x74/0x80
Modules linked in: ccm(E) dell_rbtn(E) iwlmvm(E) mei_wdt(E) mac80211(E) libarc4(E) uvcvideo(E) dell_laptop(E) videobuf2_vmalloc(E) intel_rapl_>
soundcore(E) intel_soc_dts_iosf(E) rng_core(E) battery(E) acpi_pad(E) sparse_keymap(E) acpi_thermal_rel(E) intel_pch_thermal(E) int3402_therm>
sysfillrect(E) intel_lpss(E) sysimgblt(E) fb_sys_fops(E) idma64(E) scsi_mod(E) virt_dma(E) mfd_core(E) drm(E) fan(E) thermal(E) i2c_hid(E) hi>
CPU: 1 PID: 17996 Comm: kworker/1:1 Tainted: G E 5.8.0-rc2+ #36
Hardware name: Dell Inc. Precision 5510/0N8J4R, BIOS 1.14.2 05/25/2020
Workqueue: events drm_dp_delayed_destroy_work [drm_kms_helper]
RIP: 0010:sysfs_remove_group+0x74/0x80
Code: ff 5b 48 89 ef 5d 41 5c e9 79 bc ff ff 48 89 ef e8 01 b8 ff ff eb cc 49 8b 14 24 48 8b 33 48 c7 c7 90 ac 8b 93 e8 de b1 d4 ff <0f> 0b 5b>
RSP: 0000:ffffb12d40c13c38 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffffff936e6a60 RCX: 0000000000000027
RDX: 0000000000000027 RSI: 0000000000000086 RDI: ffff8e37de097b68
RBP: 0000000000000000 R08: ffff8e37de097b60 R09: ffffffff93fb4624
R10: 0000000000000904 R11: 000000000001002c R12: ffff8e37d3081c18
R13: ffff8e375f1450a8 R14: 0000000000000000 R15: ffff8e375f145410
FS: 0000000000000000(0000) GS:ffff8e37de080000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000004ab20a001 CR4: 00000000003606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
device_del+0x97/0x3f0
cdev_device_del+0x15/0x30
put_i2c_dev+0x7b/0x90 [i2c_dev]
i2cdev_detach_adapter+0x33/0x60 [i2c_dev]
notifier_call_chain+0x47/0x70
blocking_notifier_call_chain+0x3d/0x60
device_del+0x8f/0x3f0
device_unregister+0x16/0x60
i2c_del_adapter+0x247/0x300
drm_dp_port_set_pdt+0x90/0x2c0 [drm_kms_helper]
drm_dp_delayed_destroy_work+0x2be/0x340 [drm_kms_helper]
process_one_work+0x1ae/0x370
worker_thread+0x50/0x3a0
? process_one_work+0x370/0x370
kthread+0x11b/0x140
? kthread_associate_blkcg+0x90/0x90
ret_from_fork+0x22/0x30
---[ end trace 16486ad3c2627482 ]---
------------[ cut here ]------------
Cheers,
--
Luis
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Warning triggered in drm_dp_delayed_destroy_work workqueue
2020-06-25 10:22 Warning triggered in drm_dp_delayed_destroy_work workqueue Luis Henriques
@ 2020-06-26 13:40 ` Daniel Vetter
2020-06-26 14:06 ` Ville Syrjälä
0 siblings, 1 reply; 4+ messages in thread
From: Daniel Vetter @ 2020-06-26 13:40 UTC (permalink / raw)
To: Luis Henriques, Lyude
Cc: Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann,
David Airlie, dri-devel, Linux Kernel Mailing List
Adding Lyude, she's been revamping all the lifetime refcouting in the
dp code last few kernel releases. At a glance I don't even have an
idea what's going wrong here ...
-Daniel
On Thu, Jun 25, 2020 at 12:22 PM Luis Henriques <lhenriques@suse.de> wrote:
>
> Hi!
>
> I've been seeing this warning occasionally, not sure if it has been
> reported yet. It's not a regression as I remember seeing it in, at least,
> 5.7.
>
> Anyway, here it is:
>
> ------------[ cut here ]------------
> sysfs group 'power' not found for kobject 'i2c-7'
> WARNING: CPU: 1 PID: 17996 at fs/sysfs/group.c:279 sysfs_remove_group+0x74/0x80
> Modules linked in: ccm(E) dell_rbtn(E) iwlmvm(E) mei_wdt(E) mac80211(E) libarc4(E) uvcvideo(E) dell_laptop(E) videobuf2_vmalloc(E) intel_rapl_>
> soundcore(E) intel_soc_dts_iosf(E) rng_core(E) battery(E) acpi_pad(E) sparse_keymap(E) acpi_thermal_rel(E) intel_pch_thermal(E) int3402_therm>
> sysfillrect(E) intel_lpss(E) sysimgblt(E) fb_sys_fops(E) idma64(E) scsi_mod(E) virt_dma(E) mfd_core(E) drm(E) fan(E) thermal(E) i2c_hid(E) hi>
> CPU: 1 PID: 17996 Comm: kworker/1:1 Tainted: G E 5.8.0-rc2+ #36
> Hardware name: Dell Inc. Precision 5510/0N8J4R, BIOS 1.14.2 05/25/2020
> Workqueue: events drm_dp_delayed_destroy_work [drm_kms_helper]
> RIP: 0010:sysfs_remove_group+0x74/0x80
> Code: ff 5b 48 89 ef 5d 41 5c e9 79 bc ff ff 48 89 ef e8 01 b8 ff ff eb cc 49 8b 14 24 48 8b 33 48 c7 c7 90 ac 8b 93 e8 de b1 d4 ff <0f> 0b 5b>
> RSP: 0000:ffffb12d40c13c38 EFLAGS: 00010282
> RAX: 0000000000000000 RBX: ffffffff936e6a60 RCX: 0000000000000027
> RDX: 0000000000000027 RSI: 0000000000000086 RDI: ffff8e37de097b68
> RBP: 0000000000000000 R08: ffff8e37de097b60 R09: ffffffff93fb4624
> R10: 0000000000000904 R11: 000000000001002c R12: ffff8e37d3081c18
> R13: ffff8e375f1450a8 R14: 0000000000000000 R15: ffff8e375f145410
> FS: 0000000000000000(0000) GS:ffff8e37de080000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000000000000000 CR3: 00000004ab20a001 CR4: 00000000003606e0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
> device_del+0x97/0x3f0
> cdev_device_del+0x15/0x30
> put_i2c_dev+0x7b/0x90 [i2c_dev]
> i2cdev_detach_adapter+0x33/0x60 [i2c_dev]
> notifier_call_chain+0x47/0x70
> blocking_notifier_call_chain+0x3d/0x60
> device_del+0x8f/0x3f0
> device_unregister+0x16/0x60
> i2c_del_adapter+0x247/0x300
> drm_dp_port_set_pdt+0x90/0x2c0 [drm_kms_helper]
> drm_dp_delayed_destroy_work+0x2be/0x340 [drm_kms_helper]
> process_one_work+0x1ae/0x370
> worker_thread+0x50/0x3a0
> ? process_one_work+0x370/0x370
> kthread+0x11b/0x140
> ? kthread_associate_blkcg+0x90/0x90
> ret_from_fork+0x22/0x30
> ---[ end trace 16486ad3c2627482 ]---
> ------------[ cut here ]------------
>
> Cheers,
> --
> Luis
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Warning triggered in drm_dp_delayed_destroy_work workqueue
2020-06-26 13:40 ` Daniel Vetter
@ 2020-06-26 14:06 ` Ville Syrjälä
2020-06-26 14:16 ` Luis Henriques
0 siblings, 1 reply; 4+ messages in thread
From: Ville Syrjälä @ 2020-06-26 14:06 UTC (permalink / raw)
To: Daniel Vetter
Cc: Luis Henriques, Lyude, David Airlie, Linux Kernel Mailing List,
dri-devel, Thomas Zimmermann
On Fri, Jun 26, 2020 at 03:40:20PM +0200, Daniel Vetter wrote:
> Adding Lyude, she's been revamping all the lifetime refcouting in the
> dp code last few kernel releases. At a glance I don't even have an
> idea what's going wrong here ...
Already fixed by Imre I believe.
7d11507605a7 ("drm/dp_mst: Fix the DDC I2C device unregistration of an MST port")
> -Daniel
>
> On Thu, Jun 25, 2020 at 12:22 PM Luis Henriques <lhenriques@suse.de> wrote:
> >
> > Hi!
> >
> > I've been seeing this warning occasionally, not sure if it has been
> > reported yet. It's not a regression as I remember seeing it in, at least,
> > 5.7.
> >
> > Anyway, here it is:
> >
> > ------------[ cut here ]------------
> > sysfs group 'power' not found for kobject 'i2c-7'
> > WARNING: CPU: 1 PID: 17996 at fs/sysfs/group.c:279 sysfs_remove_group+0x74/0x80
> > Modules linked in: ccm(E) dell_rbtn(E) iwlmvm(E) mei_wdt(E) mac80211(E) libarc4(E) uvcvideo(E) dell_laptop(E) videobuf2_vmalloc(E) intel_rapl_>
> > soundcore(E) intel_soc_dts_iosf(E) rng_core(E) battery(E) acpi_pad(E) sparse_keymap(E) acpi_thermal_rel(E) intel_pch_thermal(E) int3402_therm>
> > sysfillrect(E) intel_lpss(E) sysimgblt(E) fb_sys_fops(E) idma64(E) scsi_mod(E) virt_dma(E) mfd_core(E) drm(E) fan(E) thermal(E) i2c_hid(E) hi>
> > CPU: 1 PID: 17996 Comm: kworker/1:1 Tainted: G E 5.8.0-rc2+ #36
> > Hardware name: Dell Inc. Precision 5510/0N8J4R, BIOS 1.14.2 05/25/2020
> > Workqueue: events drm_dp_delayed_destroy_work [drm_kms_helper]
> > RIP: 0010:sysfs_remove_group+0x74/0x80
> > Code: ff 5b 48 89 ef 5d 41 5c e9 79 bc ff ff 48 89 ef e8 01 b8 ff ff eb cc 49 8b 14 24 48 8b 33 48 c7 c7 90 ac 8b 93 e8 de b1 d4 ff <0f> 0b 5b>
> > RSP: 0000:ffffb12d40c13c38 EFLAGS: 00010282
> > RAX: 0000000000000000 RBX: ffffffff936e6a60 RCX: 0000000000000027
> > RDX: 0000000000000027 RSI: 0000000000000086 RDI: ffff8e37de097b68
> > RBP: 0000000000000000 R08: ffff8e37de097b60 R09: ffffffff93fb4624
> > R10: 0000000000000904 R11: 000000000001002c R12: ffff8e37d3081c18
> > R13: ffff8e375f1450a8 R14: 0000000000000000 R15: ffff8e375f145410
> > FS: 0000000000000000(0000) GS:ffff8e37de080000(0000) knlGS:0000000000000000
> > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > CR2: 0000000000000000 CR3: 00000004ab20a001 CR4: 00000000003606e0
> > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> > Call Trace:
> > device_del+0x97/0x3f0
> > cdev_device_del+0x15/0x30
> > put_i2c_dev+0x7b/0x90 [i2c_dev]
> > i2cdev_detach_adapter+0x33/0x60 [i2c_dev]
> > notifier_call_chain+0x47/0x70
> > blocking_notifier_call_chain+0x3d/0x60
> > device_del+0x8f/0x3f0
> > device_unregister+0x16/0x60
> > i2c_del_adapter+0x247/0x300
> > drm_dp_port_set_pdt+0x90/0x2c0 [drm_kms_helper]
> > drm_dp_delayed_destroy_work+0x2be/0x340 [drm_kms_helper]
> > process_one_work+0x1ae/0x370
> > worker_thread+0x50/0x3a0
> > ? process_one_work+0x370/0x370
> > kthread+0x11b/0x140
> > ? kthread_associate_blkcg+0x90/0x90
> > ret_from_fork+0x22/0x30
> > ---[ end trace 16486ad3c2627482 ]---
> > ------------[ cut here ]------------
> >
> > Cheers,
> > --
> > Luis
>
>
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Ville Syrjälä
Intel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Warning triggered in drm_dp_delayed_destroy_work workqueue
2020-06-26 14:06 ` Ville Syrjälä
@ 2020-06-26 14:16 ` Luis Henriques
0 siblings, 0 replies; 4+ messages in thread
From: Luis Henriques @ 2020-06-26 14:16 UTC (permalink / raw)
To: Ville Syrjälä
Cc: Daniel Vetter, Lyude, David Airlie, Linux Kernel Mailing List,
dri-devel, Thomas Zimmermann
On Fri, Jun 26, 2020 at 05:06:00PM +0300, Ville Syrjälä wrote:
> On Fri, Jun 26, 2020 at 03:40:20PM +0200, Daniel Vetter wrote:
> > Adding Lyude, she's been revamping all the lifetime refcouting in the
> > dp code last few kernel releases. At a glance I don't even have an
> > idea what's going wrong here ...
>
> Already fixed by Imre I believe.
>
> 7d11507605a7 ("drm/dp_mst: Fix the DDC I2C device unregistration of an MST port")
>
Ah! It does seems to be the same issue indeed! Thanks a lot for pointing
me at this commit. Hopefully this fix can be included in 5.8. Not that
I'm seeing this WARNING frequently, but frequent enough to annoy me :-)
Cheers,
--
Luis
> > -Daniel
> >
> > On Thu, Jun 25, 2020 at 12:22 PM Luis Henriques <lhenriques@suse.de> wrote:
> > >
> > > Hi!
> > >
> > > I've been seeing this warning occasionally, not sure if it has been
> > > reported yet. It's not a regression as I remember seeing it in, at least,
> > > 5.7.
> > >
> > > Anyway, here it is:
> > >
> > > ------------[ cut here ]------------
> > > sysfs group 'power' not found for kobject 'i2c-7'
> > > WARNING: CPU: 1 PID: 17996 at fs/sysfs/group.c:279 sysfs_remove_group+0x74/0x80
> > > Modules linked in: ccm(E) dell_rbtn(E) iwlmvm(E) mei_wdt(E) mac80211(E) libarc4(E) uvcvideo(E) dell_laptop(E) videobuf2_vmalloc(E) intel_rapl_>
> > > soundcore(E) intel_soc_dts_iosf(E) rng_core(E) battery(E) acpi_pad(E) sparse_keymap(E) acpi_thermal_rel(E) intel_pch_thermal(E) int3402_therm>
> > > sysfillrect(E) intel_lpss(E) sysimgblt(E) fb_sys_fops(E) idma64(E) scsi_mod(E) virt_dma(E) mfd_core(E) drm(E) fan(E) thermal(E) i2c_hid(E) hi>
> > > CPU: 1 PID: 17996 Comm: kworker/1:1 Tainted: G E 5.8.0-rc2+ #36
> > > Hardware name: Dell Inc. Precision 5510/0N8J4R, BIOS 1.14.2 05/25/2020
> > > Workqueue: events drm_dp_delayed_destroy_work [drm_kms_helper]
> > > RIP: 0010:sysfs_remove_group+0x74/0x80
> > > Code: ff 5b 48 89 ef 5d 41 5c e9 79 bc ff ff 48 89 ef e8 01 b8 ff ff eb cc 49 8b 14 24 48 8b 33 48 c7 c7 90 ac 8b 93 e8 de b1 d4 ff <0f> 0b 5b>
> > > RSP: 0000:ffffb12d40c13c38 EFLAGS: 00010282
> > > RAX: 0000000000000000 RBX: ffffffff936e6a60 RCX: 0000000000000027
> > > RDX: 0000000000000027 RSI: 0000000000000086 RDI: ffff8e37de097b68
> > > RBP: 0000000000000000 R08: ffff8e37de097b60 R09: ffffffff93fb4624
> > > R10: 0000000000000904 R11: 000000000001002c R12: ffff8e37d3081c18
> > > R13: ffff8e375f1450a8 R14: 0000000000000000 R15: ffff8e375f145410
> > > FS: 0000000000000000(0000) GS:ffff8e37de080000(0000) knlGS:0000000000000000
> > > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > > CR2: 0000000000000000 CR3: 00000004ab20a001 CR4: 00000000003606e0
> > > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> > > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> > > Call Trace:
> > > device_del+0x97/0x3f0
> > > cdev_device_del+0x15/0x30
> > > put_i2c_dev+0x7b/0x90 [i2c_dev]
> > > i2cdev_detach_adapter+0x33/0x60 [i2c_dev]
> > > notifier_call_chain+0x47/0x70
> > > blocking_notifier_call_chain+0x3d/0x60
> > > device_del+0x8f/0x3f0
> > > device_unregister+0x16/0x60
> > > i2c_del_adapter+0x247/0x300
> > > drm_dp_port_set_pdt+0x90/0x2c0 [drm_kms_helper]
> > > drm_dp_delayed_destroy_work+0x2be/0x340 [drm_kms_helper]
> > > process_one_work+0x1ae/0x370
> > > worker_thread+0x50/0x3a0
> > > ? process_one_work+0x370/0x370
> > > kthread+0x11b/0x140
> > > ? kthread_associate_blkcg+0x90/0x90
> > > ret_from_fork+0x22/0x30
> > > ---[ end trace 16486ad3c2627482 ]---
> > > ------------[ cut here ]------------
> > >
> > > Cheers,
> > > --
> > > Luis
> >
> >
> >
> > --
> > Daniel Vetter
> > Software Engineer, Intel Corporation
> > http://blog.ffwll.ch
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
>
> --
> Ville Syrjälä
> Intel
^ permalink raw reply [flat|nested] 4+ messages in thread
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2020-06-25 10:22 Warning triggered in drm_dp_delayed_destroy_work workqueue Luis Henriques
2020-06-26 13:40 ` Daniel Vetter
2020-06-26 14:06 ` Ville Syrjälä
2020-06-26 14:16 ` Luis Henriques
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