diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/fault.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/fault.c | 5 |
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); |