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RDMA/uverbs: Fix the check for port number

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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@vger.kernel.org> # v2.6.14+
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>
This commit is contained in:
Ismail, Mustafa 2017-07-14 09:41:30 -05:00 • committed by Doug Ledford
commit 5a7a88f1b4
1 changed files with 2 additions and 1 deletions
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3
drivers/infiniband/core/uverbs_cmd.c
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@ -1933,7 +1933,8 @@ static int modify_qp(struct ib_uverbs_file *file,
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;
}