From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
To: hannes@cmpxchg.org
Cc: yuwang668899@gmail.com, mhocko@suse.com, linux-mm@kvack.org,
chenggang.qcg@alibaba-inc.com, yuwang.yuwang@alibaba-inc.com,
akpm@linux-foundation.org
Subject: Re: [PATCH] mm,page_alloc: softlockup on warn_alloc on
Date: Sat, 16 Sep 2017 13:12:24 +0900 [thread overview]
Message-ID: <201709161312.CAJ73470.FSOHFMVJLFQOOt@I-love.SAKURA.ne.jp> (raw)
In-Reply-To: <20170915143732.GA8397@cmpxchg.org>
Johannes Weiner wrote:
> On Fri, Sep 15, 2017 at 05:58:49PM +0800, wang Yu wrote:
> > From: "yuwang.yuwang" <yuwang.yuwang@alibaba-inc.com>
> >
> > I found a softlockup when running some stress testcase in 4.9.x,
> > but i think the mainline have the same problem.
> >
> > call trace:
> > [365724.502896] NMI watchdog: BUG: soft lockup - CPU#31 stuck for 22s!
> > [jbd2/sda3-8:1164]
>
> We've started seeing the same thing on 4.11. Tons and tons of
> allocation stall warnings followed by the soft lock-ups.
Forgot to comment. Since you are able to reproduce the problem (aren't you?),
please try setting 1 to /proc/sys/kernel/softlockup_all_cpu_backtrace so that
we can know what other CPUs are doing. It does not need to patch kernels.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2017-09-16 4:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-15 9:58 [PATCH] mm,page_alloc: softlockup on warn_alloc on wang Yu
2017-09-15 10:39 ` Michal Hocko
2017-09-15 11:38 ` Tetsuo Handa
2017-09-15 12:00 ` Michal Hocko
2017-09-15 12:09 ` Tetsuo Handa
2017-09-15 12:14 ` Michal Hocko
2017-09-15 14:12 ` Tetsuo Handa
2017-09-15 14:23 ` Michal Hocko
2017-09-24 1:56 ` Tetsuo Handa
2017-09-15 14:37 ` Johannes Weiner
2017-09-15 15:23 ` Tetsuo Handa
2017-09-15 18:44 ` Johannes Weiner
2017-09-16 0:25 ` Tetsuo Handa
2017-09-18 6:05 ` Michal Hocko
2017-09-18 6:31 ` Tetsuo Handa
2017-09-18 6:43 ` Michal Hocko
2017-09-16 4:12 ` Tetsuo Handa [this message]
2017-10-11 11:14 ` Tetsuo Handa
2017-10-18 10:54 ` Tetsuo Handa
2017-09-18 6:03 ` Michal Hocko
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=201709161312.CAJ73470.FSOHFMVJLFQOOt@I-love.SAKURA.ne.jp \
--to=penguin-kernel@i-love.sakura.ne.jp \
--cc=akpm@linux-foundation.org \
--cc=chenggang.qcg@alibaba-inc.com \
--cc=hannes@cmpxchg.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@suse.com \
--cc=yuwang.yuwang@alibaba-inc.com \
--cc=yuwang668899@gmail.com \
/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;
as well as URLs for NNTP newsgroup(s).