Discussion:
[valgrind] [Bug 391845] New: Unrecognised instruction: __svml_irem8_l9
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Thomas Magnusson
2018-03-14 08:47:02 UTC
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https://bugs.kde.org/show_bug.cgi?id=391845

Bug ID: 391845
Summary: Unrecognised instruction: __svml_irem8_l9
Product: valgrind
Version: 3.11.0
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: callgrind
Assignee: ***@gmx.de
Reporter: ***@ericsson.com
Target Milestone: ---

This is code compiled with Intel icpc C++ compiler, version 18.0.1 20171018

output from valgrind --tool=callgrind:

vex amd64->IR: unhandled instruction bytes: 0xF3 0xF 0x1E 0xFA 0x55 0x48 0x89
0xE5
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=0F
vex amd64->IR: PFX.66=0 PFX.F2=0 PFX.F3=1
==846== valgrind: Unrecognised instruction at address 0x460e40.
==846== at 0x460E40: __svml_irem8_l9 (in ....)
[ ... stack back trace ... ]
==846== Your program just tried to execute an instruction that Valgrind
==846== did not recognise. There are two possible reasons for this.
==846== 1. Your program has a bug and erroneously jumped to a non-code
==846== location. If you are running Memcheck and you just saw a
==846== warning about a bad jump, it's probably your program's fault.
==846== 2. The instruction is legitimate but Valgrind doesn't handle it,
==846== i.e. it's Valgrind's fault. If you think this is the case or
==846== you are not sure, please let us know and we'll try to fix it.
==846== Either way, Valgrind will now raise a SIGILL signal which will
==846== probably kill your program.
==846==
==846== Process terminating with default action of signal 4 (SIGILL)
==846== Illegal opcode at address 0x460E40
==846== at 0x460E40: __svml_irem8_l9 (in ...)
[ ... stack back trace ... ]
==846==
==846== Events : Ir
==846== Collected : 0
==846==
==846== I refs: 0
Illegal instruction (core dumped)
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Julian Seward
2018-08-06 09:03:03 UTC
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https://bugs.kde.org/show_bug.cgi?id=391845

Julian Seward <***@acm.org> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@acm.org

--- Comment #1 from Julian Seward <***@acm.org> ---
3.11.0 is pretty old. Can you re-test with 3.13.0 or better with the
latest git trunk sources?
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