diff options
| author | Harish Chegondi <harish.chegondi@intel.com> | 2016-08-31 07:24:40 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-09-02 14:26:55 -0400 |
| commit | 429b6a721727d49d8565b50a6bc0dc42432383a9 (patch) | |
| tree | 1e85d4359c97abdf1392fca7474a0eeb5097b565 /drivers/infiniband/hw/hfi1/init.c | |
| parent | 673b975f1fbad5382f76afdb987e7513c5f4b71b (diff) | |
IB/hfi1: Make n_krcvqs be an unsigned long integer
The global variable n_krcvqs stores the sum of the number of kernel
receive queues of VLs 0-7 which the user can pass to the driver through
the module parameter array krcvqs which is of type unsigned integer. If
the user passes large value(s) into krcvqs parameter array, it can cause
an arithmetic overflow while calculating n_krcvqs which is also of type
unsigned int. The overflow results in an incorrect value of n_krcvqs
which can lead to kernel crash while loading the driver.
Fix by changing the data type of n_krcvqs to unsigned long. This patch
also changes the data type of other variables that get their values from
n_krcvqs.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/init.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/hfi1/init.c b/drivers/infiniband/hw/hfi1/init.c index 000dc079bd88..384b43d2fd49 100644 --- a/drivers/infiniband/hw/hfi1/init.c +++ b/drivers/infiniband/hw/hfi1/init.c @@ -94,7 +94,7 @@ module_param_array(krcvqs, uint, &krcvqsset, S_IRUGO); MODULE_PARM_DESC(krcvqs, "Array of the number of non-control kernel receive queues by VL"); /* computed based on above array */ -unsigned n_krcvqs; +unsigned long n_krcvqs; static unsigned hfi1_rcvarr_split = 25; module_param_named(rcvarr_split, hfi1_rcvarr_split, uint, S_IRUGO); |