RE: [Xen-devel] [PATCH 29/29] drivers, xen: convert grant_map.users from atomic_t to refcount_t
> On 03/08/2017 08:49 AM, Reshetova, Elena wrote: > >> On 03/06/2017 09:21 AM, Elena Reshetova wrote: > >>> refcount_t type and corresponding API should be > >>> used instead of atomic_t when the variable is used as > >>> a reference counter. This allows to avoid accidental > >>> refcounter overflows that might lead to use-after-free > >>> situations. > >>> > >>> Signed-off-by: Elena Reshetova> >>> Signed-off-by: Hans Liljestrand > >>> Signed-off-by: Kees Cook > >>> Signed-off-by: David Windsor > >>> --- > >>> drivers/xen/gntdev.c | 11 ++- > >>> 1 file changed, 6 insertions(+), 5 deletions(-) > >> Reviewed-by: Boris Ostrovsky > > Is there a tree that can take this change? Turns out it is better to > > propagate > changes via separate trees and only leftovers can be taken via Greg's tree. > > > > Sure, we can take it via Xen tree for rc3. Thank you very much! Best Regards, Elena. > > -boris
RE: [Xen-devel] [PATCH 29/29] drivers, xen: convert grant_map.users from atomic_t to refcount_t
> On 03/08/2017 08:49 AM, Reshetova, Elena wrote: > >> On 03/06/2017 09:21 AM, Elena Reshetova wrote: > >>> refcount_t type and corresponding API should be > >>> used instead of atomic_t when the variable is used as > >>> a reference counter. This allows to avoid accidental > >>> refcounter overflows that might lead to use-after-free > >>> situations. > >>> > >>> Signed-off-by: Elena Reshetova > >>> Signed-off-by: Hans Liljestrand > >>> Signed-off-by: Kees Cook > >>> Signed-off-by: David Windsor > >>> --- > >>> drivers/xen/gntdev.c | 11 ++- > >>> 1 file changed, 6 insertions(+), 5 deletions(-) > >> Reviewed-by: Boris Ostrovsky > > Is there a tree that can take this change? Turns out it is better to > > propagate > changes via separate trees and only leftovers can be taken via Greg's tree. > > > > Sure, we can take it via Xen tree for rc3. Thank you very much! Best Regards, Elena. > > -boris
Re: [Xen-devel] [PATCH 29/29] drivers, xen: convert grant_map.users from atomic_t to refcount_t
On 03/08/2017 08:49 AM, Reshetova, Elena wrote: >> On 03/06/2017 09:21 AM, Elena Reshetova wrote: >>> refcount_t type and corresponding API should be >>> used instead of atomic_t when the variable is used as >>> a reference counter. This allows to avoid accidental >>> refcounter overflows that might lead to use-after-free >>> situations. >>> >>> Signed-off-by: Elena Reshetova>>> Signed-off-by: Hans Liljestrand >>> Signed-off-by: Kees Cook >>> Signed-off-by: David Windsor >>> --- >>> drivers/xen/gntdev.c | 11 ++- >>> 1 file changed, 6 insertions(+), 5 deletions(-) >> Reviewed-by: Boris Ostrovsky > Is there a tree that can take this change? Turns out it is better to > propagate changes via separate trees and only leftovers can be taken via > Greg's tree. > Sure, we can take it via Xen tree for rc3. -boris
Re: [Xen-devel] [PATCH 29/29] drivers, xen: convert grant_map.users from atomic_t to refcount_t
On 03/08/2017 08:49 AM, Reshetova, Elena wrote: >> On 03/06/2017 09:21 AM, Elena Reshetova wrote: >>> refcount_t type and corresponding API should be >>> used instead of atomic_t when the variable is used as >>> a reference counter. This allows to avoid accidental >>> refcounter overflows that might lead to use-after-free >>> situations. >>> >>> Signed-off-by: Elena Reshetova >>> Signed-off-by: Hans Liljestrand >>> Signed-off-by: Kees Cook >>> Signed-off-by: David Windsor >>> --- >>> drivers/xen/gntdev.c | 11 ++- >>> 1 file changed, 6 insertions(+), 5 deletions(-) >> Reviewed-by: Boris Ostrovsky > Is there a tree that can take this change? Turns out it is better to > propagate changes via separate trees and only leftovers can be taken via > Greg's tree. > Sure, we can take it via Xen tree for rc3. -boris
RE: [Xen-devel] [PATCH 29/29] drivers, xen: convert grant_map.users from atomic_t to refcount_t
> On 03/06/2017 09:21 AM, Elena Reshetova wrote: > > refcount_t type and corresponding API should be > > used instead of atomic_t when the variable is used as > > a reference counter. This allows to avoid accidental > > refcounter overflows that might lead to use-after-free > > situations. > > > > Signed-off-by: Elena Reshetova> > Signed-off-by: Hans Liljestrand > > Signed-off-by: Kees Cook > > Signed-off-by: David Windsor > > --- > > drivers/xen/gntdev.c | 11 ++- > > 1 file changed, 6 insertions(+), 5 deletions(-) > > Reviewed-by: Boris Ostrovsky Is there a tree that can take this change? Turns out it is better to propagate changes via separate trees and only leftovers can be taken via Greg's tree. Best Regards, Elena.
RE: [Xen-devel] [PATCH 29/29] drivers, xen: convert grant_map.users from atomic_t to refcount_t
> On 03/06/2017 09:21 AM, Elena Reshetova wrote: > > refcount_t type and corresponding API should be > > used instead of atomic_t when the variable is used as > > a reference counter. This allows to avoid accidental > > refcounter overflows that might lead to use-after-free > > situations. > > > > Signed-off-by: Elena Reshetova > > Signed-off-by: Hans Liljestrand > > Signed-off-by: Kees Cook > > Signed-off-by: David Windsor > > --- > > drivers/xen/gntdev.c | 11 ++- > > 1 file changed, 6 insertions(+), 5 deletions(-) > > Reviewed-by: Boris Ostrovsky Is there a tree that can take this change? Turns out it is better to propagate changes via separate trees and only leftovers can be taken via Greg's tree. Best Regards, Elena.
Re: [Xen-devel] [PATCH 29/29] drivers, xen: convert grant_map.users from atomic_t to refcount_t
On 03/06/2017 09:21 AM, Elena Reshetova wrote: > refcount_t type and corresponding API should be > used instead of atomic_t when the variable is used as > a reference counter. This allows to avoid accidental > refcounter overflows that might lead to use-after-free > situations. > > Signed-off-by: Elena Reshetova> Signed-off-by: Hans Liljestrand > Signed-off-by: Kees Cook > Signed-off-by: David Windsor > --- > drivers/xen/gntdev.c | 11 ++- > 1 file changed, 6 insertions(+), 5 deletions(-) Reviewed-by: Boris Ostrovsky
Re: [Xen-devel] [PATCH 29/29] drivers, xen: convert grant_map.users from atomic_t to refcount_t
On 03/06/2017 09:21 AM, Elena Reshetova wrote: > refcount_t type and corresponding API should be > used instead of atomic_t when the variable is used as > a reference counter. This allows to avoid accidental > refcounter overflows that might lead to use-after-free > situations. > > Signed-off-by: Elena Reshetova > Signed-off-by: Hans Liljestrand > Signed-off-by: Kees Cook > Signed-off-by: David Windsor > --- > drivers/xen/gntdev.c | 11 ++- > 1 file changed, 6 insertions(+), 5 deletions(-) Reviewed-by: Boris Ostrovsky