From: Igor Mammedov <imammedo@redhat.com>
To: Mike Galbraith <efault@gmx.de>
Cc: linux-kernel@vger.kernel.org, mingo@redhat.com,
peterz@infradead.org, tglx@linutronix.de,
torvalds@linux-foundation.org
Subject: Re: regression since 4.8 and newer in select_idle_siblings()
Date: Tue, 18 Oct 2016 16:52:38 +0200 [thread overview]
Message-ID: <20161018165238.2d38643b@nial.brq.redhat.com> (raw)
In-Reply-To: <1476799327.11338.1.camel@gmx.de>
On Tue, 18 Oct 2016 16:02:07 +0200
Mike Galbraith <efault@gmx.de> wrote:
> On Tue, 2016-10-18 at 15:40 +0200, Igor Mammedov wrote:
> > kernel crashes at runtime due null pointer dereference at
> > select_idle_sibling()
> > -> select_idle_cpu()
> > ...
> > u64 avg_cost = this_sd->avg_scan_cost;
> >
> > regression bisects to:
> > commit 10e2f1acd0106c05229f94c70a344ce3a2c8008b
> > Author: Peter Zijlstra <peterz@infradead.org>
> > sched/core: Rewrite and improve select_idle_siblings()
>
> http://git.kernel.org/tip/9cfb38a7ba5a9c27c1af8093fb1af4b699c0a441
Thanks, above patch fixes issue for me.
> Already fixed, and will land in Linus' tree soon.
>
> -Mike
prev parent reply other threads:[~2016-10-18 14:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-18 13:40 regression since 4.8 and newer in select_idle_siblings() Igor Mammedov
2016-10-18 14:02 ` Mike Galbraith
2016-10-18 14:52 ` Igor Mammedov [this message]
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