Re: [Valgrind-users] Behavior diffenert with valgrind & without valgrind

[Eliot M. <mo...@cs...>]

On 2/23/2012 7:51 AM, jee wrote:
> My code change itself with running, and, I use VALGRIND_DISCARD_TRANSLATIONS with I changed the
> function's assembly code.
>
> and my code is pure C++. i rewrite the assembly code like this:
> inline hook:
> mov addr, %rax
> jmp *%rax
> I insert this assembly code to the begin of functions,
>
> I can run my elf fine. but with valgrind, the code's behavior is....random. mostly, it goto deadly lock.

You have self-modifying code, so probably need to specify
some flavor of the --smc-check option to valgrind. See the
man page :-) ...

Best wishes -- Eliot Moss