in reply to SIGILL with mod_perl on openVZ

It appears this is a glibc 2.12 bug from last year:

bugzilla

As this is the same OS (Fedora 13) with the same AVX enabled hardware, and a near identical backtrace. Also, the "small reproducer" posted with that bug report reproduces the problem on that system. Evidently Fedora never upgraded the glibc package after the patch.

:(