svn commit: r300257 - in head/sys/boot/i386: libi386 zfsboot
John Baldwin
jhb at freebsd.org
Fri May 20 14:54:12 UTC 2016
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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