svn commit: r347566 - in head/sys: amd64/amd64 amd64/include dev/cpuctl i386/i386 i386/include x86/include x86/x86

Dmitry Chagin dchagin at freebsd.org
Wed May 15 06:00:06 UTC 2019


вт, 14 мая 2019 г. в 20:02, Konstantin Belousov <kib at freebsd.org>:

> Author: kib
> Date: Tue May 14 17:02:20 2019
> New Revision: 347566
> URL: https://svnweb.freebsd.org/changeset/base/347566
>
> Log:
>   Mitigations for Microarchitectural Data Sampling.
>
>   Microarchitectural buffers on some Intel processors utilizing
>   speculative execution may allow a local process to obtain a memory
>   disclosure.  An attacker may be able to read secret data from the
>   kernel or from a process when executing untrusted code (for example,
>   in a web browser).
>
>   Reference:
> https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00233.html
>   Security:     CVE-2018-12126, CVE-2018-12127, CVE-2018-12130,
> CVE-2019-11091
>   Security:     FreeBSD-SA-19:07.mds
>   Reviewed by:  jhb
>   Tested by:    emaste, lwhsu
>   Approved by:  so (gtetlow)
>
> Modified:
>   head/sys/amd64/amd64/exception.S
>   head/sys/amd64/amd64/genassym.c
>   head/sys/amd64/amd64/initcpu.c
>   head/sys/amd64/amd64/machdep.c
>   head/sys/amd64/amd64/support.S
>



Hi, Kostik!

cc -target x86_64-unknown-freebsd13.0
--sysroot=/home/dchagin/obj/home/dchagin/head/amd64.amd64/tmp
-B/home/dchagin/obj/home/dchagin/head/amd64.amd64/tmp/usr/bin -c -x
assembler-with-cpp -DLOCORE -O2 -pipe -fno-strict-aliasing  -g -nostdinc
-I. -I/home/dchagin/head/sys -I/home/dchagin/head/sys/contrib/ck/include
-I/home/dchagin/head/sys/contrib/libfdt -D_KERNEL
-DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -MD
-MF.depend.support.o -MTsupport.o
-fdebug-prefix-map=./machine=/home/dchagin/head/sys/amd64/include
-fdebug-prefix-map=./x86=/home/dchagin/head/sys/x86/include -mcmodel=kernel
-mno-red-zone -mno-mmx -mno-sse -msoft-float
-fno-asynchronous-unwind-tables -ffreestanding -fwrapv -fstack-protector
-gdwarf-2 -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes
-Wmissing-prototypes -Wpointer-arith -Wcast-qual -Wundef -Wno-pointer-sign
-D__printf__=__freebsd_kprintf__ -Wmissing-include-dirs
-fdiagnostics-show-option -Wno-unknown-pragmas
-Wno-error-tautological-compare -Wno-error-empty-body
-Wno-error-parentheses-equality -Wno-error-unused-function
-Wno-error-pointer-sign -Wno-error-shift-negative-value
-Wno-address-of-packed-member  -mno-aes -mno-avx  -std=iso9899:1999
-Werror /home/dchagin/head/sys/amd64/amd64/support.S
/home/dchagin/head/sys/amd64/amd64/support.S:1809:2: error: instruction
requires: AVX-512 ISA
 vmovdqa64 %zmm0, %gs:0x340
 ^
/home/dchagin/head/sys/amd64/amd64/support.S:1810:2: error: instruction
requires: AVX-512 ISA
 vpxor %zmm0, %zmm0, %zmm0
 ^
/home/dchagin/head/sys/amd64/amd64/support.S:1813:2: error: instruction
requires: AVX-512 DQ ISA
 vorpd (%rdx), %zmm0, %zmm0
 ^
/home/dchagin/head/sys/amd64/amd64/support.S:1814:2: error: instruction
requires: AVX-512 DQ ISA
 vorpd (%rdx), %zmm0, %zmm0
 ^
/home/dchagin/head/sys/amd64/amd64/support.S:1826:2: error: instruction
requires: AVX-512 ISA
 vmovdqa64 %gs:0x340, %zmm0
 ^
*** Error code 1


I/m missied something?


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