kernel: ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()

In the Linux kernel, the following vulnerability has been resolved: ext4: fix out-of-bound read in ext4xattrinodedecrefall There's issue as follows: BUG: KASAN: use-after-free in ext4xattrinodedecrefall+0x6ff/0x790 Read of size 4 at addr ffff88807b003000 by task syz-executor.0/15172 CPU: 3 PID:...