> -----Original Message----- > From: Greg KH [mailto:gregkh@xxxxxxxxxxxxxxxxxxx] > Sent: Saturday, April 30, 2016 2:03 PM > To: KY Srinivasan <kys@xxxxxxxxxxxxx> > Cc: linux-kernel@xxxxxxxxxxxxxxx; devel@xxxxxxxxxxxxxxxxxxxxxx; > olaf@xxxxxxxxx; apw@xxxxxxxxxxxxx; vkuznets@xxxxxxxxxx; > jasowang@xxxxxxxxxx > Subject: Re: [PATCH 1/3] Drivers: hv: balloon: don't crash when memory is > added in non-sorted order > > On Fri, Apr 29, 2016 at 11:45:17AM -0700, K. Y. Srinivasan wrote: > > From: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> > > > > When we iterate through all HA regions in handle_pg_range() we have an > > assumption that all these regions are sorted in the list and the > > 'start_pfn >= has->end_pfn' check is enough to find the proper region. > > Unfortunately it's not the case with WS2016 where host can hot-add > regions > > in a different order. We end up modifying the wrong HA region and > crashing > > later on pages online. Modify the check to make sure we found the region > > we were searching for while iterating. Fix the same check in pfn_covered() > > as well. > > > > Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> > > Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx> > > --- > > drivers/hv/hv_balloon.c | 4 ++-- > > 1 files changed, 2 insertions(+), 2 deletions(-) > > I only received patch 1/3 here, what happened to the other 2? > > Can you resend the whole series? Will do. Thanks, K. Y > > thanks, > > greg k-h _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
