mmap_region() now calls fput() on the vma->vm_file.
Fix this by using vma_set_file() so it doesn't need to be
handled manually here any more.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Fixes: 1527f926fd04 ("mm: mmap: fix fput in error path v2")
CC: stable@xxxxxxxxxxxxxxx # 5.11+
---
fs/overlayfs/file.c | 11 +----------
1 file changed, 1 insertion(+), 10 deletions(-)
diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
index dbfb35fb0ff7..3847cdc069b5 100644
--- a/fs/overlayfs/file.c
+++ b/fs/overlayfs/file.c
@@ -430,20 +430,11 @@ static int ovl_mmap(struct file *file, struct vm_area_struct *vma)
if (WARN_ON(file != vma->vm_file))
return -EIO;
- vma->vm_file = get_file(realfile);
+ vma_set_file(vma, realfile);
old_cred = ovl_override_creds(file_inode(file)->i_sb);
ret = call_mmap(vma->vm_file, vma);
revert_creds(old_cred);
-
- if (ret) {
- /* Drop reference count from new vm_file value */
- fput(realfile);
- } else {
- /* Drop reference count from previous vm_file value */
- fput(file);
- }
-
ovl_file_accessed(file);
return ret;
--
2.25.1
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