f2fs: avoid BUG_ON from check_nid_range and update return path in do_read_inode

In function check_nid_range, there is no need to trigger BUG_ON and make kernel stop.
Instead it could just check and indicate the inode number to be EINVAL.
Update the return path in do_read_inode to use the return from check_nid_range.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
[Jaegeuk: replace BUG_ON with WARN_ON]
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index ddae412d30c8..e0e8308594a5 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -44,7 +44,11 @@ static int do_read_inode(struct inode *inode)
         struct f2fs_inode *ri;
 
         /* Check if ino is within scope */
-        check_nid_range(sbi, inode->i_ino);
+        if (check_nid_range(sbi, inode->i_ino)) {
+                f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
+                         (unsigned long) inode->i_ino);
+                return -EINVAL;
+        }
 
         node_page = get_node_page(sbi, inode->i_ino);
         if (IS_ERR(node_page))