fork() crashes on child but returns success on parent

[Nir Livni (nirl@cyber-ark.com)]

Now I know for sure that the child crashes (SIGSEGV) before fork() returns.
I could see it in the UML debugger.
It does not use the signal handler I have set up of the SIGSEGV. It simply
crashes and exits.

Could this be any kernel problem ?
Any ideas what should I do next to track this problem ?

> Subject: fork() returns on parent but not returns on child
> 
> 
> Hi all,
> I am experiencing a problem, where fork() returns succesfully 
> on parent, but does not return on child. The child process 
> simply "disappears". I believe it might have got a SIGSEGV 
> (if it makes any sence) before fork() has returned.
> 
> I would like to track down this problem.
> What I did so far is:
> 1. I tried first to make sure there are no memory overruns 
> using few tools. 2. I tried to look at strace output, but the 
> problem does not occur if I use strace 3. I make a 
> UserModeLinux machine and now I would like to breakpoint the 
> created child before it crashes (assuming it really crashes)
> 
> How do I do that ?
> 
> Thanks,
> Nir
> 
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