Re: [PATCH 3/3] utrace-based ftrace "process" engine, v2

From: Alexey Dobriyan
Date: Sat Mar 21 2009 - 18:30:54 EST


On Sat, Mar 21, 2009 at 06:20:30PM -0400, Frank Ch. Eigler wrote:
> On Sat, Mar 21, 2009 at 03:02:59PM -0700, Linus Torvalds wrote:
> > [...]
> > > The thing is, utrace crashes in Fedora have dominated kerneloops.org
> > > for many months [...]
> >
> > .. and dammit, I agree 100%. If utrace really shows up in _any_ way on
> > kerneloops.org, then I think THE ENTIRE DISCUSSION in this thread is moot.
>
> There was a short span of time during last fall, when Roland was on
> vacation. That bug (in 2.6.26.3) was fixed during the kernel summit.
> So this is a six-month obsolete grievance.

struct task_struct::utrace became embedded struct. This is good and
should remove quite a few of utrace bugs. Better late than never.

However, "rewrite-ptrace-via-utrace" patch was omitted, so almost noone
can easily see by how much situation improved.

I see this patch was dropped in Fedora.

Will ptrace(2) will be rewritten through utrace?
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