On Fri, Sep 21, 2018 at 11:30:13AM -0400, Doug Ledford wrote:
> Given a large enough memory allocation, it is possible to wrap the
> pinned_vm counter. Check for addition overflow to prevent such
> eventualities.
>
> Fixes: 40ddacf2dda9 ("RDMA/umem: Don't hold mmap_sem for too long")
> Reported-by: Jason Gunthorpe <jgg@xxxxxxxx>
> Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx>
> ---
> drivers/infiniband/core/umem.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
>
Thanks,
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Attachment:
signature.asc
Description: PGP signature
