From: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
These are not code pages and should never be executed.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 5f9794dc94f5 ("RDMA/ucontext: Add a core API for mmaping driver IO memory")
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/core/uverbs_main.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index fef4519d1241..3ef6474cd201 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -889,6 +889,10 @@ static struct rdma_umap_priv *rdma_user_mmap_pre(struct ib_ucontext *ucontext,
struct ib_uverbs_file *ufile = ucontext->ufile;
struct rdma_umap_priv *priv;
+ if (vma->vm_flags & VM_EXEC)
+ return ERR_PTR(-EINVAL);
+ vma->vm_flags &= ~VM_MAYEXEC;
+
if (vma->vm_end - vma->vm_start != size)
return ERR_PTR(-EINVAL);
--
2.20.1
