[libav-bugs] [Bug 276] New: Crash on 64-bit Windows with SSSE3/AVX capable CPUs

bugzilla-daemon at aruru.libav.org bugzilla-daemon at aruru.libav.org
Sun Apr 29 04:34:52 CEST 2012


https://bugzilla.libav.org/show_bug.cgi?id=276

           Summary: Crash on 64-bit Windows with SSSE3/AVX capable CPUs
           Product: Libav
           Version: git HEAD
          Platform: X86
        OS/Version: Windows
            Status: NEW
          Severity: critical
          Priority: Normal
         Component: libavcodec
        AssignedTo: bugzilla at libav.org
        ReportedBy: lachs0r at srsfckn.biz


Users of my mplayer2 builds for Windows have reported crashes on 64-bit
Windows.
It apparently only happens on SSSE3/AVC capable CPUs, so I assume this is due
to some SIMD optimization. The problem vanishes if I build libav with either
--disable-ssse3 or --disable-avx.

Unfortunately I haven’t been able to reproduce it with WINE on a Linux box with
an i7 2600, and the one user who offered to run GDB on a debug binary of
mplayer2 hasn’t been able to gather useful backtraces either (most of them
showed segfaults in completely unrelated places, like VP8 and Mimic decoders).
I’m currently waiting on him to test an avconv binary.

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