* Possible regression with 3.13
@ 2013-11-18 16:06 Boris Ostrovsky
2013-11-18 18:12 ` Konrad Rzeszutek Wilk
0 siblings, 1 reply; 2+ messages in thread
From: Boris Ostrovsky @ 2013-11-18 16:06 UTC (permalink / raw)
To: xen-devel; +Cc: David Vrabel
We appear to have a regression in 32-bit 3.13 Linux dom0 --- sometimes
(often) dom0 gets stuck somewhere in RCU while running an HVM guest
(with "INFO: rcu_sched self-detected stall on CPU..." message being the
first indication of things not going well).
I believe this was brought in by 39cf275 merge. I am trying to bisect
this merge but having a bit of tool trouble. While I am doing this, if
anyone noticed any issues with 32-bit dom0 recently, please let me know.
I see this most often with 4.1 but I think unstable is also affected.
-boris
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Possible regression with 3.13
2013-11-18 16:06 Possible regression with 3.13 Boris Ostrovsky
@ 2013-11-18 18:12 ` Konrad Rzeszutek Wilk
0 siblings, 0 replies; 2+ messages in thread
From: Konrad Rzeszutek Wilk @ 2013-11-18 18:12 UTC (permalink / raw)
To: Boris Ostrovsky, mingo; +Cc: xen-devel, David Vrabel, linux
On Mon, Nov 18, 2013 at 11:06:39AM -0500, Boris Ostrovsky wrote:
> We appear to have a regression in 32-bit 3.13 Linux dom0 ---
> sometimes (often) dom0 gets stuck somewhere in RCU while running an
> HVM guest (with "INFO: rcu_sched self-detected stall on CPU..."
> message being the first indication of things not going well).
Thanks for reporting it!
>
> I believe this was brought in by 39cf275 merge. I am trying to
> bisect this merge but having a bit of tool trouble. While I am doing
> this, if anyone noticed any issues with 32-bit dom0 recently, please
> let me know.
Hey Ingo,
Cc-ing you so you are aware of the regression issues.
>
> I see this most often with 4.1 but I think unstable is also affected.
>
> -boris
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