diff options
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index a0ceb1cbed52..2e959acf2ff1 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -396,6 +396,14 @@ ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) return -EINVAL; + /* + * Local write permission is required if remote write or + * remote atomic permission is also requested. + */ + if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && + !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) + return -EINVAL; + obj = kmalloc(sizeof *obj, GFP_KERNEL); if (!obj) return -ENOMEM; |