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From: Arnd Bergmann <arnd@arndb.de>
To: Alex Bennee <kernel-hacker@bennee.com>
Subject: Re: [PATCH] RFC. User space backtrace on segv
Date: Wed, 6 Oct 2004 19:17:06 +0200
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On Mittwoch, 6. Oktober 2004 18:39, Alex Bennee wrote:
> On Wed, 2004-10-06 at 17:37, Alex Bennee wrote:
> > Hi,
> >=20
> > I hacked up this little patch to dump the stack and attempt to generate
> > a back-trace for errant user-space tasks.
> >  <snip>
>=20

Note that there already is similar functionality on s390, possibly on
other architectures as well. In kernel/sysctl.c, there is code
to make the behavior run-time selectable. The sysctl is currently called=20
KERN_S390_USER_DEBUG_LOGGING and compiled in only for s390, but it might
be a good idea to define this in an architecture independent way, e.g.
with a config option that is always selected on s390, sh and possibly
other archs.

	Arnd <><

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