ANDROID: sdcardfs: Check for NULL in revalidate
If the inode is in the process of being evicted,
the top value may be NULL.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 38502532
Change-Id: I0b9d04aab621e0398d44d1c5dc53293106aa5f89
diff --git a/fs/sdcardfs/dentry.c b/fs/sdcardfs/dentry.c
index a231681..e9426a6 100644
--- a/fs/sdcardfs/dentry.c
+++ b/fs/sdcardfs/dentry.c
@@ -109,14 +109,16 @@
goto out;
/* If our top's inode is gone, we may be out of date */
- inode = d_inode(dentry);
+ inode = igrab(d_inode(dentry));
if (inode) {
data = top_data_get(SDCARDFS_I(inode));
- if (data->abandoned) {
+ if (!data || data->abandoned) {
d_drop(dentry);
err = 0;
}
- data_put(data);
+ if (data)
+ data_put(data);
+ iput(inode);
}
out: