Re: RCU lockup issues when CONFIG_SOFTLOCKUP_DETECTOR=n - any one else seeing this?

On Fri, Jul 28, 2017 at 12:09:56PM -0700, Paul E. McKenney wrote:

On Fri, Jul 28, 2017 at 11:41:29AM -0700, Paul E. McKenney wrote:

quoted

On Fri, Jul 28, 2017 at 07:55:30AM -0700, Paul E. McKenney wrote:

quoted

On Fri, Jul 28, 2017 at 08:54:16PM +0800, Boqun Feng wrote:

[ . . . ]

quoted

quoted

Even though Jonathan's testing indicates that it didn't fix this
particular problem:

Acked-by: Paul E. McKenney <redacted>

And while we are at it:

Tested-by: Paul E. McKenney <redacted>

Not because it it fixed the TREE01 issue -- it did not.  But as near
as I can see, it didn't cause any additional issues.

Understood.

Still work on waketorture for a test case which could trigger this
problem in a real world. My old plan is to send this out when I could
use waketorture to show this patch actually resolves some potential
bugs, but just put it ahead here in case it may help.

Will send it out with your Tested-by and Acked-by and continue to work
on waketorture.

Regards,
Boqun

							Thanx, Paul