Timekeeping warning during resume from suspend to disk

Timekeeping warning during resume from suspend to disk

[Ivid Suvarna]

Hi All,

Facing below warning backtrace during resume from suspend to disk. I
am using 4.1.15 freescale kernel. After this warning there is a huge
time gap (nearly 10 sec) between Enabling non-boot cpus and CPU1 being
up. Any pointers on this would be helpful.

[  545.227081] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
[  545.227081] [<80018674>] (unwind_backtrace) from [<80013c24>]
(show_stack+0x20/0x24)
[  545.227081] [<80013c24>] (show_stack) from [<80684220>]
(dump_stack+0x7c/0xbc)
[  545.227081] [<80684220>] (dump_stack) from [<80034fcc>]
(warn_slowpath_common+0x94/0xc4)
[  545.227081] [<80034fcc>] (warn_slowpath_common) from [<800350b8>]
(warn_slowpath_null+0x2c/0x34)
[  545.227081] [<800350b8>] (warn_slowpath_null) from [<8009ce24>]
(clockevents_program_event+0x14c/0x15c)
[  545.227081] [<8009ce24>] (clockevents_program_event) from
[<8009f39c>] (tick_resume_oneshot+0x5c/0x64)
[  545.227081] [<8009f39c>] (tick_resume_oneshot) from [<8009daa8>]
(tick_resume_local+0x58/0x68)
[  545.227081] [<8009daa8>] (tick_resume_local) from [<8009daf4>]
(tick_resume+0x1c/0x20)
[  545.227081] [<8009daf4>] (tick_resume) from [<80096328>]
(timekeeping_resume+0x1c8/0x2bc)
[  545.227081] [<80096328>] (timekeeping_resume) from [<803e5a7c>]
(syscore_resume+0x94/0x250)
[  545.227081] [<803e5a7c>] (syscore_resume) from [<800721b0>]
(suspend_devices_and_enter+0x78c/0x99c)
[  545.227081] [<800721b0>] (suspend_devices_and_enter) from
[<800728a0>] (pm_suspend+0x4e0/0x74c)
[  545.227081] [<800728a0>] (pm_suspend) from [<80070adc>]
(state_store+0x74/0xa0)
[  545.227081] [<80070adc>] (state_store) from [<8031f3c4>]
(kobj_attr_store+0x1c/0x28)
[  545.227081] [<8031f3c4>] (kobj_attr_store) from [<801a9814>]
(sysfs_kf_write+0x50/0x54)
[  545.227081] [<801a9814>] (sysfs_kf_write) from [<801a8fc8>]
(kernfs_fop_write+0xcc/0x1b8)
[  545.227081] [<801a8fc8>] (kernfs_fop_write) from [<8013c1d4>]
(__vfs_write+0x3c/0xec)
[  545.227081] [<8013c1d4>] (__vfs_write) from [<8013ca88>]
(vfs_write+0xa0/0x180)
[  545.227081] [<8013ca88>] (vfs_write) from [<8013d2fc>] (SyS_write+0x4c/0xa0)
[  545.227081] [<8013d2fc>] (SyS_write) from [<8000fd3c>]
(__cpuset_migrate_return+0x0/0x24)

Regards,
IVID

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Re: Timekeeping warning during resume from suspend to disk

[Greg KH]

On Tue, Feb 20, 2018 at 12:53:26PM +0530, Ivid Suvarna wrote:
> Hi All,
> 
> Facing below warning backtrace during resume from suspend to disk. I
> am using 4.1.15 freescale kernel.

4.1.15 is a kernel that is very old and obsolete (released almost 3
years ago, and tens of thousands of changes old.)  Please try something
newer and more modern like 4.15.  If the issue is still there, the
community will be glad to help you out.

If you are stuck at that old kernel version for some odd reason, please
get support from the company that is forcing you to use it.

good luck!

greg k-h

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Re: Timekeeping warning during resume from suspend to disk

[Ivid Suvarna]

Hi Greg,

> 4.1.15 is a kernel that is very old and obsolete (released almost 3
> years ago, and tens of thousands of changes old.)  Please try something
> newer and more modern like 4.15.  If the issue is still there, the
> community will be glad to help you out.
>
> If you are stuck at that old kernel version for some odd reason, please
> get support from the company that is forcing you to use it.

Thank u for your kind suggestions.
I just tested with 4.14 kernel on same board and am still facing the same issue.
Is there anything I can look into for debugging this issue?

Thanks,
IVID

Re: Timekeeping warning during resume from suspend to disk

[Rafael J. Wysocki]

On Tuesday, February 20, 2018 2:49:24 PM CET Ivid Suvarna wrote:
> Hi Greg,
> 
> > 4.1.15 is a kernel that is very old and obsolete (released almost 3
> > years ago, and tens of thousands of changes old.)  Please try something
> > newer and more modern like 4.15.  If the issue is still there, the
> > community will be glad to help you out.
> >
> > If you are stuck at that old kernel version for some odd reason, please
> > get support from the company that is forcing you to use it.
> 
> Thank u for your kind suggestions.
> I just tested with 4.14 kernel on same board and am still facing the same issue.
> Is there anything I can look into for debugging this issue?

Can you add a bit more context from your log, please?


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