Re: splice vs execve lockdep trace.

Vince Weaver
2013-07-16T13:58:51Z

On Mon, 15 Jul 2013, Linus Torvalds wrote:

> On Mon, Jul 15, 2013 at 7:38 PM, Dave Jones <davej@redhat.com> wrote:
>
> > Interestingly, the 'soft lockups' I was
> > seeing all the time on that box seem to have gone into hiding.
>
> Honestly, I'm somewhat inclined to blame the whole perf situation, and
> saying that we hopefully got that fixed. In between the silly do_div()
> buglets and all the indications that the time was spent in nmi
> handlers, I'd be willing to just ignore them as false positives
> brought on by the whole switch to the perf irq..

Did the perf soft lockups go away with 3.11-rc1?

734df5ab549ca44f40de0f07af1c8803856dfb18 finally got committed,
and it fixes a major long-standing perf-related NMI soft lockup bug I
found when fuzzing.

Vince