diff options
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/memory.c b/mm/memory.c index 30feedabc932..3ccee51adfbb 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -6350,7 +6350,8 @@ static inline void pfnmap_args_setup(struct follow_pfnmap_args *args, static inline void pfnmap_lockdep_assert(struct vm_area_struct *vma) { #ifdef CONFIG_LOCKDEP - struct address_space *mapping = vma->vm_file->f_mapping; + struct file *file = vma->vm_file; + struct address_space *mapping = file ? file->f_mapping : NULL; if (mapping) lockdep_assert(lockdep_is_held(&vma->vm_file->f_mapping->i_mmap_rwsem) || |