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path: root/drivers/infiniband/hw/hfi1/fault.c
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Diffstat (limited to 'drivers/infiniband/hw/hfi1/fault.c')
-rw-r--r--drivers/infiniband/hw/hfi1/fault.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/fault.c b/drivers/infiniband/hw/hfi1/fault.c
index 3fd3315d0fb0..93613e5def9b 100644
--- a/drivers/infiniband/hw/hfi1/fault.c
+++ b/drivers/infiniband/hw/hfi1/fault.c
@@ -153,6 +153,7 @@ static ssize_t fault_opcodes_write(struct file *file, const char __user *buf,
char *dash;
unsigned long range_start, range_end, i;
bool remove = false;
+ unsigned long bound = 1U << BITS_PER_BYTE;
end = strchr(ptr, ',');
if (end)
@@ -178,6 +179,10 @@ static ssize_t fault_opcodes_write(struct file *file, const char __user *buf,
BITS_PER_BYTE);
break;
}
+ /* Check the inputs */
+ if (range_start >= bound || range_end >= bound)
+ break;
+
for (i = range_start; i <= range_end; i++) {
if (remove)
clear_bit(i, fault->opcodes);