if (dip->di_magic != cpu_to_be16(XFS_DINODE_MAGIC))
return false;
+ /* don't allow invalid i_size */
+ if (be64_to_cpu(dip->di_size) & (1ULL << 63))
+ return false;
+
+ /* No zero-length symlinks. */
+ if (S_ISLNK(be16_to_cpu(dip->di_mode)) && dip->di_size == 0)
+ return false;
+
/* only version 3 or greater inodes are extensively verified here */
if (dip->di_version < 3)
return true;
return;
ASSERT(xfs_sb_version_hascrc(&mp->m_sb));
- crc = xfs_start_cksum((char *)dip, mp->m_sb.sb_inodesize,
+ crc = xfs_start_cksum_update((char *)dip, mp->m_sb.sb_inodesize,
XFS_DINODE_CRC_OFF);
dip->di_crc = xfs_end_cksum(crc);
}