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False-negative enqcmds, nop, bsr instructions #1558

woodruffw opened this issue Oct 28, 2019 · 2 comments


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@woodruffw woodruffw commented Oct 28, 2019

As of 5809774:

  libbfd capstone zydis xed
f3430f38f890d20aec2c repz rex.XB (bad) (5 / 17) (0 / 0) enqcmds rdx, zmmword ptr [r8+0x2cec0ad2] (10 / 40) enqcmds rdx, zmmword ptr [r8+0x2CEC0AD2] (10 / 40)
2e363e65440f0dd8 cs ss ds gs rex.R prefetch (bad) (6 / 32) (0 / 0) nop eax, r11d (8 / 13) nop eax, r11d (8 / 13)
f2f266260fbdee repnz data16 es (bad) (6 / 21) (0 / 0) bsr bp, si (7 / 10) bsr bp, si (7 / 10)

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@aquynh aquynh commented Oct 28, 2019

Please report result with "cstool".

Did you try with the "next" branch?


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@woodruffw woodruffw commented Oct 28, 2019

5809774 is on the next branch (the same is true for #1557 and #1556).

These results are coming from an automated tool; I can run cstool manually after the fact if that makes things easier, but I'll probably be reporting more in the future and the volume might make that difficult.

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