[grsec] followup about expand_stack

[Carlos Carvalho]

Brad Spengler (spender at grsecurity.net) wrote on 20 January 2007 15:07:
 >On Sat, Jan 20, 2007 at 04:41:38PM -0200, Carlos Carvalho wrote:
 >> What I should have added in the previous msg. is that I don't know if
 >> the segfault is due to a failure in the kernel or in the poc code. I
 >> don't know how to decipher the addresses... They show a kdb stack
 >> trace that seems to point to the kernel. It must be checked if it's
 >> true.
 >
 >The POC should have a signal handler in it for SIGSEGV.  Once this is 
 >added, it'll execute fully.

I put  signal(SIGSEGV, SIG_IGN); right above signal (SIGBUS, mouarf);
and it still just segfaults. How can a process be aborted by segfault
if it's ignored??? No BUG().

I'm using uderef, is it related?