On Friday, May 20, 2016 01:41:47 AM Allan Jude wrote:
> Author: allanjude
> Date: Fri May 20 01:41:47 2016
> New Revision: 300257
> URL: https://svnweb.freebsd.org/changeset/base/300257
> 
> Log:
>   Fixup the geliboot sector rounding code
>   
>   Replace all rounding with the round{up,down}2 macros
>   a missing set of braces caused the previous code to be incorrect
>   
>   replace alloca() with malloc() because alloca() can return an allocation
>   that is actually invalid, causing boot to fail

No, you have to revert the malloc!  malloc() can be anywhere.  The alloca
is _on purpose_ to get a bufer below 1MB so that it will work with all
devices.  Some BIOSes can only store data in the first 1MB.

-- 
John Baldwin
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