Re: [PATCH] error out on execve with no binfmts

[Chris Wright]

* Andrew Morton (akpm@xxxxxxxx) wrote:
> Chris Wright <chrisw@xxxxxxxx> wrote:
> >
> > Early calls to userspace can invoke an execve() before any binfmt handlers
> > are registered.  Properly return an error in this case rather than 0.
> > On at least one arch (x86_64) without this patch, the system will double
> > fault on early attempts to call_usermodehelper.  Suggestions on a better
> > error?
> 
> These handlers are installed at core_initcall() time.  Who is calling out
> to userspace so early?

kobject_add()->kobject_hotplug() stuff during driver_init(), like platform bus
initialization, etc.

thanks,
-chris
-- 
Linux Security Modules     http://lsm.immunix.org     http://lsm.bkbits.net
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/