strace behavior under debian wheezy

[GALAMBOS Daniel <dancsa@dancsa.hu>]

Hi,

I currently debugging a system which recieves SIGTERM from unspecified
source.
Under Ubuntu if I attach an strace -e trace=signal to the process, it
prints out the signal sender's UID and PID like: '--- SIGTERM
{si_signo=SIGTERM, si_code=SI_USER, si_pid=3469, si_uid=0} ---'

Under Debian I can't access to these useful information, killing the
process prints out: '--- SIGTERM (Terminated) @ 0 (0) ---'

Are there any way to acquire the signal sender's PID?

Thanks,

Dancsa