ext4: Fix memory and buffer head leak in callers to ext4_ext_find_extent()
The path variable returned via ext4_ext_find_extent is a kmalloc
variable and needs to be freeded. It also contains a reference to
buffer_head which needs to be dropped.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index 8c6c685..5c1e27d 100644
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -43,6 +43,7 @@
if (IS_ERR(path)) {
retval = PTR_ERR(path);
+ path = NULL;
goto err_out;
}
@@ -74,6 +75,10 @@
}
retval = ext4_ext_insert_extent(handle, inode, path, &newext);
err_out:
+ if (path) {
+ ext4_ext_drop_refs(path);
+ kfree(path);
+ }
lb->first_pblock = 0;
return retval;
}