Comment 2 for bug 672384

The xtrabackup manual says:

"
... to use the statistics feature, you need a clean copy of the database including correctly sized log files, so you need to execute with --prepare twice to use this functionality on a backup.
"

http://www.percona.com/docs/wiki/percona-xtrabackup:xtrabackup:statistics

Since the crash reported in this bug was caused by missing log files when using the --stats option, the fix should be to make xtrabackup --stats refuse to run with a descriptive error message when no log files have been found rather than trying to create them and crash.