CVE-2023-53294 fs/ntfs3: Fix null-ptr-deref on inode->i_op in ntfs_lookup()

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix null-ptr-deref on inode-iop in ntfslookup Syzbot reported a null-ptr-deref bug: ntfs3: loop0: Different NTFS' sector size 1024 and media sector size 512 ntfs3: loop0: Mark volume as dirty due to NTFS errors general...