| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.12 166/196] RDMA/uverbs: Fix the check for port number | Date | Tue, 25 Jul 2017 12:22:45 -0700 |
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4.12-stable review patch. If anyone has any objections, please let me know.
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From: Ismail, Mustafa <mustafa.ismail@intel.com>
commit 5a7a88f1b488e4ee49eb3d5b82612d4d9ffdf2c3 upstream.
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") Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com> Tested-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/infiniband/core/uverbs_cmd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -1931,7 +1931,8 @@ static int modify_qp(struct ib_uverbs_fi goto out; } - if (!rdma_is_port_valid(qp->device, cmd->base.port_num)) { + if ((cmd->base.attr_mask & IB_QP_PORT) && + !rdma_is_port_valid(qp->device, cmd->base.port_num)) { ret = -EINVAL; goto release_qp; }
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