Re: [Valgrind-users] New user and first problem

[Tom H. <to...@co...>]

On 18/05/2020 18:48, Julian Seward wrote:
> 
>> Program received signal SIGILL: Illegal instruction.
>>
>> Backtrace for this error:
>> vex amd64->IR: unhandled instruction bytes: 0x62 0xF1 0xFD 0x8 0x6F 0x5
>> 0x25 0xA8 0x18 0x0
>> vex amd64->IR:   REX=0 REX.W=0 REX.R=0 REX.X=0 REX.B=0
>> vex amd64->IR:   VEX=0 VEX.L=0 VEX.nVVVV=0x0 ESC=NONE
>> vex amd64->IR:   PFX.66=0 PFX.F2=0 PFX.F3=0
>> ==377969== valgrind: Unrecognised instruction at address 0xabf9581.
>> ==377969==    at 0xABF9581: opal_pointer_array_construct (in
>> /opt/openmpi-GCC73/v3.1.x-20181010/lib/libopen-pal.so.40.10.3)
> 
> It sounds like there's an instruction in libopen-pal.so.40.10.3 that
> Valgrind doesn't like.  What CPU does the machine have?

0x62 is an EVEX prefix from the AVX512 extensions, so isn't
supported yet.

Tom

-- 
Tom Hughes (to...@co...)
http://compton.nu/