On Wed, 28 Oct 2020 14:23:34 -0400, Qian Cai wrote:
> The call to rcu_cpu_starting() in start_secondary() is not early enough
> in the CPU-hotplug onlining process, which results in lockdep splats as
> follows:
>
> WARNING: suspicious RCU usage
> -
> kernel/locking/l
On Wed, 2020-10-28 at 17:31 -0700, Paul E. McKenney wrote:
> On Thu, Oct 29, 2020 at 11:09:07AM +1100, Michael Ellerman wrote:
> > Qian Cai writes:
> > > The call to rcu_cpu_starting() in start_secondary() is not early enough
> > > in the CPU-hotplug onlining process, which results in lockdep spla
On Thu, 2020-10-29 at 11:09 +1100, Michael Ellerman wrote:
> Qian Cai writes:
> > The call to rcu_cpu_starting() in start_secondary() is not early enough
> > in the CPU-hotplug onlining process, which results in lockdep splats as
> > follows:
>
> Since when?
For me, it is since the commit in the
On Wed, Oct 28, 2020 at 02:23:34PM -0400, Qian Cai wrote:
> The call to rcu_cpu_starting() in start_secondary() is not early enough
> in the CPU-hotplug onlining process, which results in lockdep splats as
> follows:
>
> WARNING: suspicious RCU usage
> -
> kernel/loc
On Thu, Oct 29, 2020 at 11:09:07AM +1100, Michael Ellerman wrote:
> Qian Cai writes:
> > The call to rcu_cpu_starting() in start_secondary() is not early enough
> > in the CPU-hotplug onlining process, which results in lockdep splats as
> > follows:
>
> Since when?
> What kernel version?
>
> I h
Qian Cai writes:
> The call to rcu_cpu_starting() in start_secondary() is not early enough
> in the CPU-hotplug onlining process, which results in lockdep splats as
> follows:
Since when?
What kernel version?
I haven't seen this running CPU hotplug tests with PROVE_LOCKING=y on
v5.10-rc1. Am I m
The call to rcu_cpu_starting() in start_secondary() is not early enough
in the CPU-hotplug onlining process, which results in lockdep splats as
follows:
WARNING: suspicious RCU usage
-
kernel/locking/lockdep.c:3497 RCU-list traversed in non-reader section!!
other i
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