thread on sleepqueue does not wake up after timeout

[Andriy Gapon]

On 22/10/2019 16:16, Konstantin Belousov wrote:
> On Tue, Oct 22, 2019 at 02:48:56PM +0300, Andriy Gapon wrote:
>> On 22/10/2019 13:44, Konstantin Belousov wrote:
>>> On Tue, Oct 22, 2019 at 01:08:59PM +0300, Andriy Gapon wrote:
>>>> Has anyone seen anything like this problem?
>>> Yes, but it was very long time ago.  See r303426.
>>
>> Yeah, we are based off r329000 plus a bunch of merges for various fixes.
>> One thing I forgot to mention is that it seems to happen only on VMware guests,
>> but maybe it's only because we have many more virtual test boxes than we have
>> physical ones.
>> One thing I suspected was that binuptime() could somehow jump backwards...
> Do you use any of suspend/migration ?

No, the VMs are pinned to hosts.
No suspension and no migration.

> Perhaps record sbinuptime() in the struct thread in sleepq_timeout() and
> keep the original value of td_sleeptimo around to see what did happen.

Thank you for the idea.
I will try it.

-- 
Andriy Gapon