[uml-devel] SIGSEGV handle in UML TT mode

[Alex L. <ale...@st...>]

Hi,all:

I run a process in UML TT mode. Because of some reason(I don't know yet) =
the process will run it's SIGSEGV signal handler segv_handler then call =
segv and at last call force_sig_info(SIGSEGV,&si,current).

Now I have 2 questions:

1.after tracing I found the process hadn't receive a SIGSEGV signal. =
Since it didn't call handle_signal before that. And it seems that =
send_signal hadn't be called to send the SIGSEGV signal to the process. =
So in UML TT mode,is there any posibility that a process can run the =
segv_handler without a SIGSEGV signal?

2.in segv,why it will call force_sig_info(SIGSEGV,&si,current) to send =
the SIGSEGV signal to itself again? Since it has been in the SIGSEGV =
handler.

And is there any good way to trace the reason which cause the SIGSEGV =
signal in UML TT mode?

Thanks a lot!

Alex