From: Miklos Szeredi <miklos@szeredi.hu>
Date: Wed, 16 Mar 2011 17:17:54 +0000 (+0100)
Subject: fix cdev leak on O_PATH final fput()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=60ed8cf78f886753e454b671841c0a3a0e55e915;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

fix cdev leak on O_PATH final fput()

__fput doesn't need a cdev_put() for O_PATH handles.

Signed-off-by: mszeredi@suse.cz
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/file_table.c b/fs/file_table.c
index 74a9544ac770..db30d3497f1a 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -246,8 +246,10 @@ static void __fput(struct file *file)
 		file->f_op->release(inode, file);
 	security_file_free(file);
 	ima_file_free(file);
-	if (unlikely(S_ISCHR(inode->i_mode) && inode->i_cdev != NULL))
+	if (unlikely(S_ISCHR(inode->i_mode) && inode->i_cdev != NULL &&
+		     !(file->f_mode & FMODE_PATH))) {
 		cdev_put(inode->i_cdev);
+	}
 	fops_put(file->f_op);
 	put_pid(file->f_owner.pid);
 	file_sb_list_del(file);