[Bug 296641] sysutils/pefs-kmod script files are sort-of zeroed when execed

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=296641

--- Comment #7 from Bill Blake <[email protected]> ---
(In reply to Daniel O'Connor from comment #5)

I have an additional data point.  I wrote a bitty program to mmap a file and
read it.  That resulted in a bus error for the read when the file was on a pefs
mounted directory but not for a file in an ordinary file system.  My
understanding is that when execing a file, the file is mapped into memory, so
it seems likely that the code related to mmap is broken in pefs and that fixing
it will make execution work again.

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