[PATCH] check put_user fail in do_signal when enable OABI_COMPACT

[Russell King - ARM Linux]

On Sun, Oct 25, 2009 at 02:23:09PM +0800, ye janboe wrote:
> hi, Russell
> 
> Your patch looks good for real fixing this issue.

My patch doesn't address your issue, it only addresses a previous
problem.  We're still decrementing the stack pointer and writing to
a possible new page - which could fault.

Therefore, your patch is still required, but it needs to be modified
to apply on top of my patch.

A replacement patch would be welcome.