[Gllug] Strange process death

[Daniel P. Berrange]

On Tue, Aug 16, 2005 at 12:55:49PM +0100, Richard Jones wrote:
> I have a strange process which is consuming 100% of CPU and lots of
> memory.  Strace is unhelpful:
> 
> $ strace -p31012
> Process 31012 attached - interrupt to quit
> --- SIGSTOP (Stopped (signal)) @ 0 (0) ---
> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> [ ad infinitum ]
> 
> Any idea what on earth this means?  Has it masked SIGSEGV?

When I've seen this before its commonly been as a result of the app 
having installed a custom signal handler for SEGV, and this signal 
handler itself doing bad enough stuff to cause further SEGV. JVMs
do such nasty tricks with SEGV handlers & although they do typically
have the good grace to install the handler with a pre-allocated 
signal handler - sigaltstack() - this isn't a foolproof protection
agaist further problems. 

Regards,
Dan.
-- 
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