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| author | Sean Hefty <sean.hefty@intel.com> | 2007-06-05 09:57:31 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2007-06-07 23:24:38 -0700 |
| commit | bf2944bd56c7a48cc3962a860dbc4ceee6b1ace8 (patch) | |
| tree | b6255f3830965ddc615a0b872bd3c4bbfa1bf492 | |
| parent | 57f01b53398baebd809e7efd49fc10c10174b46d (diff) | |
| download | op-kernel-dev-bf2944bd56c7a48cc3962a860dbc4ceee6b1ace8.zip op-kernel-dev-bf2944bd56c7a48cc3962a860dbc4ceee6b1ace8.tar.gz | |
RDMA/cma: Fix initialization of next_port
next_port should be between sysctl_local_port_range[0] and [1].
However, it is initially set to a random value with get_random_bytes().
If the value is negative when treated as a signed integer, next_port
can end up outside the expected range because of the result of the %
operator being negative.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
| -rw-r--r-- | drivers/infiniband/core/cma.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 2eb52b7..32a0e66 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -2773,8 +2773,8 @@ static int cma_init(void) int ret; get_random_bytes(&next_port, sizeof next_port); - next_port = (next_port % (sysctl_local_port_range[1] - - sysctl_local_port_range[0])) + + next_port = ((unsigned int) next_port % + (sysctl_local_port_range[1] - sysctl_local_port_range[0])) + sysctl_local_port_range[0]; cma_wq = create_singlethread_workqueue("rdma_cm"); if (!cma_wq) |
