user-mode-linux-user

[uml-user] How to run UML with valgrind and GDB?

[Real N. <enj...@gm...>]

Hi,
  I tried to run UML (linux-3.12.6-x86) kernel with valgrind and GDB. 
But valgrind always terminated because SIGSEGV signal. I searched with 
google, just got some very old resource about run linux-2.6.xx with valgrind.

 So, is it possible to run linux (>3.12) with valgrind? If yes, how to do it?

thanks

Re: [uml-user] How to run UML with valgrind and GDB?

[Richard W. <ric...@gm...>]

On Wed, Jun 4, 2014 at 10:26 AM, Real Name <enj...@gm...> wrote:
> Hi,
>   I tried to run UML (linux-3.12.6-x86) kernel with valgrind and GDB.
> But valgrind always terminated because SIGSEGV signal. I searched with
> google, just got some very old resource about run linux-2.6.xx with valgrind.

To run UML in GDB you have to tell GDB to ignore SIGSEGV.
UML uses it for page faults.

>  So, is it possible to run linux (>3.12) with valgrind? If yes, how to do it?

No.
A long time ago it was possible after applying a patch to both UML and valgrind.

-- 
Thanks,
//richard