Date: Thu, 27 Jul 2023 11:55:14 -0400 From: mike tancsa <mike@sentex.net> To: Shawn Webb <shawn.webb@hardenedbsd.org>, 0x1eef <0x1eef@protonmail.com> Cc: "freebsd-security@freebsd.org" <freebsd-security@freebsd.org> Subject: Re: Zenbleed Message-ID: <b87b0b4e-617d-1c0c-10f5-d5b407d8b485@sentex.net> In-Reply-To: <20230726214636.yblem2s4sgapb6cw@mutt-hbsd> References: <G8KdlREJ53JvhucNV2MkjySsZ4qqs6ZdHFXJaFqDIvXj5usSBEr3pOe29JoQVHgjtctmrIOR7O1PHwchvf_cGLr53jbwNGPy_F7_9OstBCE=@protonmail.com> <20230726214636.yblem2s4sgapb6cw@mutt-hbsd>
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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
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