[Bug 271766] dumpfs fails on geli devices: cylinder group checks failed

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From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 03 Jun 2023 15:21:34 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271766

--- Comment #10 from Andrew "RhodiumToad" Gierth <andrew@tao11.riddles.org.uk> ---
Created attachment 242577
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=242577&action=edit
Test program

I've attached the test program I'm using to reproduce. Usage:

md=$(mdconfig -s 1M -t swap)
geli onetime -s 4096 $md
# this will panic with software crypto, or if there are data discrepancies it
will report them:
./a.out /dev/$md 1

The code where it panics has changed in 14-current so it's quite possible that
the bug doesn't exist there. This program should make it easy to test.

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