tree f23d27a2c973d0b0542f84cdd0b39be5e4ba406d
parent c6ed413ddcfb66e9d3e1318060271391c7659dd3
author David S. Miller <davem@davemloft.net> 1218531829 -0700
committer David S. Miller <davem@davemloft.net> 1218531829 -0700

sparc64: Fix recursion in stack overflow detection handling.

The calls down into prom_printf() when we detect an overflowed stack
can recurse again since the overflow stack will be "below" the current
kernel stack limit.

Prevent this by just returning straight if we are on the stack
overflow safe stack already.

Signed-off-by: David S. Miller <davem@davemloft.net>