Re: [for-next][PATCH v2 1/3] tracing: Fix syscall_*regfunc() vs copy_process() race

[Steven Rostedt]

On Tue, 24 Jun 2014 15:55:41 +0900
Namhyung Kim <namhyung@xxxxxxxxxx> wrote:

> Hi Steve,
> 
> On Fri, 20 Jun 2014 06:45:19 -0400, Steven Rostedt wrote:
> > From: Oleg Nesterov <oleg@xxxxxxxxxx>
> >
> > syscall_regfunc() and syscall_unregfunc() should set/clear
> > TIF_SYSCALL_TRACEPOINT system-wide, but do_each_thread() can race
> > with copy_process() and miss the new child which was not added to
> > the process/thread lists yet.
> >
> > Change copy_process() to update the child's TIF_SYSCALL_TRACEPOINT
> > under tasklist.
> 
> s/tasklist/tasklist_lock/ ?
> 
> Probably I'm too late..

Yeah, but it's just a change log, and I think people can figure it out
(I hope).

-- Steve
--
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/