On 7/26/2023 5:46 PM, Shawn Webb wrote:
On Wed, Jul 26, 2023 at 08:34:56PM +0000, 0x1eef wrote:
Hello,
I was curious if there are plans to apply the "chicken bit"
workaround for the Ryzen line of processors. A firmware
update is not scheduled to be released until Nov or Dec
at the earliest. Thanks.
For those that would like to test if their systems are affected, this
proof-of-concept was reported to work on at least one system:
https://git.hardenedbsd.org/shawn.webb/zenbleed/-/tree/shawn.webb/bsd/main
Building it depends on gmake and nasm. You'll want to be on the
shawn.webb/bsd/main branch.
Thanks for that. Is there a way to compile on RELENG_12 or is it 13 only ?
% gmake
cc -O0 -ggdb3 -march=znver2 -c -o pattern.o pattern.c
pattern.c:15:10: fatal error: 'sys/sysinfo.h' file not found
#include <sys/sysinfo.h>
^~~~~~~~~~~~~~~
1 error generated.
gmake: *** [<builtin>: pattern.o] Error 1
---Mike
