Messages in this thread | | | Date | Fri, 20 Jun 2014 21:19:30 -0400 | From | Steven Rostedt <> | Subject | Re: [for-next][PATCH v2 1/3] tracing: Fix syscall_*regfunc() vs copy_process() race |
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On Fri, 20 Jun 2014 18:11:25 -0700 "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:
> On Fri, Jun 20, 2014 at 06:45:19AM -0400, Steven Rostedt wrote: > > From: Oleg Nesterov <oleg@redhat.com> > > > > 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. > > > > Link: http://lkml.kernel.org/p/20140413185854.GB20668@redhat.com > > > > Cc: stable@vger.kernel.org # 2.6.33 > > Fixes: a871bd33a6c0 "tracing: Add syscall tracepoints" > > Acked-by: Frederic Weisbecker <fweisbec@gmail.com> > > Signed-off-by: Oleg Nesterov <oleg@redhat.com> > > Signed-off-by: Steven Rostedt <rostedt@goodmis.org> > > Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> >
I don't usually rebase my for-next branch for acks, but I already rebased once for fixing an issue, and it's early in the rc cycle, and this is the first patch on the branch, so I think I will do it.
Thanks!
-- Steve
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