ACK/cmnt: [bionic/linux-azure, cosmic/linux-azure][PATCH 0/2] [Hyper-V] srcu: Lock srcu_data structure in srcu_gp_start()

[Marcelo Henrique Cerri]

On Mon, Feb 04, 2019 at 12:33:09PM +0100, Kleber Souza wrote:
> On 2/1/19 8:34 PM, Marcelo Henrique Cerri wrote:
> > BugLink: http://bugs.launchpad.net/bugs/1802021
> >
> > comic/linux-azure only requires one of the patches.
> >
> > Dennis Krein (1):
> >   srcu: Lock srcu_data structure in srcu_gp_start()
> >
> > Paul E. McKenney (1):
> >   srcu: Prohibit call_srcu() use under raw spinlocks
> >
> >  include/linux/srcutree.h |   8 +--
> >  kernel/rcu/srcutree.c    | 111 ++++++++++++++++++++++++---------------
> >  2 files changed, 74 insertions(+), 45 deletions(-)
> >
> There are some reports on the bug of the problem happening with the
> generic 4.15 kernel as well. Are you considering submitting it later for
> the generic kernel?

Eventually, yes. Microsoft reported the problem on linux-azure and SEG
is handling a similar problem for another user in linux-hwe. While MS
has already given us feedback saying that those commits actually fix
their problem, SEG is still working on that with that other
user. Because of that, we decided to apply that for linux-azure for
the time being.

> 
> Acked-by: Kleber Sacilotto de Souza <kleber.souza at canonical.com>
> 

--
Regards,
Marcelo
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