chcp crashes with exit status 139. We confirmed the crash by
re-running it in a fresh debian unstable installation.

The attachment [1] contains a testcase (under ./crash) crashing the
program. It ensures that you can easily reproduce the bug. Additionally,
under ./crash_info/, we include more information about the crash such as
a core dump, the dmesg generated by the crash, and its output.

Regards,
The Mayhem Team (Alexandre Rebert, Thanassis Avgerinos, Sang Kil Cha, David Brumley, Manuel Egele)
Cylab, Carnegie Mellon University

[1] http://www.forallsecure.com/bug-reports/141ebf60fe86ba898f8117f0bce05284c3910e1b/full_report

This bug does not undermine the usability of the packet since it is only
triggered by malformed arguments. It is trivial to fix.
Please downgrade to minor.

I created a pull request upstream:

https://github.com/nilfs-dev/nilfs-utils/pull/23

This issue has been fixed in upstream nilfs-utils 2.2.12