Re: [PATCH] Exception trace for i386

[Alan Cox <alan@lxorguk.ukuu.org.uk>]

On Llu, 2003-05-19 at 21:56, Linus Torvalds wrote:
> >proved to be very useful to trace otherwise hidden faults, e.g.
> >on a normal kernel there is no way to see a segfault in a process
> >that runs in a write protected directory, even when core dumps
> >are enabled. Also it's useful as an early warning that something
> >is wrong with your system.

You can change the segfault path for core dumps via /proc 

> I don't think it's ever really valid to expose it as a global option, as
> some programs use page faults (even the signalling kind) to do their own
> memory management, and making it a global option just makes it hard to
> work with such programs.

The classic being the texas objectstore which I suspect would not be
happy if printk logged each fault 8)