https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275731

John F. Carr <[email protected]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freebsd.org/bu
                   |                            |gzilla/show_bug.cgi?id=2953
                   |                            |77

--- Comment #4 from John F. Carr <[email protected]> ---
I am convinced now that this is a bug with deduplication.

If I leave dedup=verify and disable the buf[0] assertion I get file corruption
during a parallel build, a .o file is full of nulls.  The exact file is
unpredictable.

If I set dedup=off on the active filesystems everything is fine.  No assertion
and no data loss. Tested on 15 and CURRENT.

Sometimes the data that should be 0 appears to be ASCII text interpreted as a
64 bit integer.

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