diff options
| -rw-r--r-- | mm/mmap.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index df9154b15ef9..43ef85028921 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -291,6 +291,8 @@ unsigned long do_mmap(struct file *file, unsigned long addr, *populate = 0; + mmap_assert_write_locked(mm); + if (!len) return -EINVAL; @@ -1023,6 +1025,8 @@ unsigned long mmap_region(struct file *file, unsigned long addr, unsigned long ret; bool writable_file_mapping = false; + mmap_assert_write_locked(current->mm); + /* Check to see if MDWE is applicable. */ if (map_deny_write_exec(vm_flags, vm_flags)) return -EACCES; |