On Mon, Aug 07, 2017 at 02:03:08PM +0300, Yuval Shaia wrote:
> On Wed, Jul 26, 2017 at 11:14:46AM -0500, Mustafa Ismail wrote:
> > The port number is only valid if IB_QP_PORT is set in the mask.
> > So only check port number if it is valid to prevent modify_qp
> > from failing due to an invalid port number.
> >
> > Fixes: 5ecce4c9b17b("Check port number supplied by user verbs cmds")
> > Cc: <stable@xxxxxxxxxxxxxxx> # v4.2-v4.9
> > Cc: <security@xxxxxxxxxx>
> > Cc: Doug Ledford <dledford@xxxxxxxxxx>
> > Cc: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
> > Cc: Mike Marciniszyn <mike.marciniszyn@xxxxxxxxx>
> >
> > Signed-off-by: Mustafa Ismail <mustafa.ismail@xxxxxxxxx>
> >
> > Upstream commit 5a7a88f1b488("Fix the check for port number")
> > Modified from upstream commit: helper function rdma_is_port_valid does not
> > exist in these kernel versions.
> > ---
> > drivers/infiniband/core/uverbs_cmd.c | 5 +++--
> > 1 file changed, 3 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
> > index 01e3a37..d118ffe 100644
> > --- a/drivers/infiniband/core/uverbs_cmd.c
> > +++ b/drivers/infiniband/core/uverbs_cmd.c
> > @@ -2342,8 +2342,9 @@ ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
> > if (copy_from_user(&cmd, buf, sizeof cmd))
> > return -EFAULT;
> >
> > - if (cmd.port_num < rdma_start_port(ib_dev) ||
> > - cmd.port_num > rdma_end_port(ib_dev))
> > + if ((cmd.attr_mask & IB_QP_PORT) &&
> > + (cmd.port_num < rdma_start_port(ib_dev) ||
> > + cmd.port_num > rdma_end_port(ib_dev)))
>
> Please use rdma_is_port_valid
Yuval,
This patch is meant for Stable v4.2-v4.9 which does not have
rdma_is_port_valid. The patch upstream is using rdma_is_port_valid.
Here is a link to it: https://patchwork.kernel.org/patch/9841243/
Chien
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