From: Mike Galbraith <efault@gmx.de>
To: Igor Mammedov <imammedo@redhat.com>, linux-kernel@vger.kernel.org
Cc: 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 16:02:07 +0200 [thread overview]
Message-ID: <1476799327.11338.1.camel@gmx.de> (raw)
In-Reply-To: <20161018154025.1e686cad@nial.brq.redhat.com>
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
Already fixed, and will land in Linus' tree soon.
-Mike
next prev parent reply other threads:[~2016-10-18 14:02 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 [this message]
2016-10-18 14:52 ` Igor Mammedov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1476799327.11338.1.camel@gmx.de \
--to=efault@gmx.de \
--cc=imammedo@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox