From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
To: Ben Hutchings <ben@decadent.org.uk>
Cc: linux-kernel@vger.kernel.org
Subject: rcu_bh stalls on 3.2.28
Date: Fri, 31 Aug 2012 20:02:57 -0300 [thread overview]
Message-ID: <20120831230256.GA7016@khazad-dum.debian.net> (raw)
In-Reply-To: <1345467862.22400.139.camel@deadeye.wl.decadent.org.uk>
Just got one of these:
kernel: INFO: rcu_bh detected stall on CPU 2 (t=0 jiffies)
kernel: Pid: 0, comm: swapper/2 Not tainted 3.2.28+ #2
kernel: Call Trace:
kernel: <IRQ> [<ffffffff810d1609>] __rcu_pending+0x159/0x400
kernel: [<ffffffff810d20bb>] rcu_check_callbacks+0x9b/0x120
kernel: [<ffffffff81089673>] update_process_times+0x43/0x80
kernel: [<ffffffff810a836f>] tick_sched_timer+0x5f/0xb0
kernel: [<ffffffff8109c097>] __run_hrtimer.isra.30+0x57/0x100
kernel: [<ffffffff8109c8f5>] hrtimer_interrupt+0xe5/0x220
kernel: [<ffffffff8104ce14>] smp_apic_timer_interrupt+0x64/0xa0
kernel: [<ffffffff8159b5cb>] apic_timer_interrupt+0x6b/0x70
kernel: <EOI> [<ffffffff81315645>] ? intel_idle+0xe5/0x140
kernel: [<ffffffff81315623>] ? intel_idle+0xc3/0x140
kernel: [<ffffffff814420ee>] cpuidle_idle_call+0x8e/0xf0
kernel: [<ffffffff81032425>] cpu_idle+0xa5/0x110
kernel: [<ffffffff8158a9ac>] start_secondary+0x1e5/0x1ec
There are previous reports of these weird rcu_bh stalls with t=0 in the 3.2
and 3.3 branches as well:
https://lkml.org/lkml/2012/2/18/34
http://lkml.org/lkml/2012/3/28/175
another data point:
https://bugzilla.redhat.com/show_bug.cgi?id=806610
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
next prev parent reply other threads:[~2012-08-31 23:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-20 13:04 Linux 3.2.28 Ben Hutchings
2012-08-20 13:05 ` Ben Hutchings
2012-08-31 23:02 ` Henrique de Moraes Holschuh [this message]
2012-09-03 6:05 ` rcu_bh stalls on 3.2.28 Michael Wang
2012-09-03 17:24 ` Henrique de Moraes Holschuh
2012-09-09 18:12 ` Ben Hutchings
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=20120831230256.GA7016@khazad-dum.debian.net \
--to=hmh@hmh.eng.br \
--cc=ben@decadent.org.uk \
--cc=linux-kernel@vger.kernel.org \
--subject='Re: rcu_bh stalls on 3.2.28' \
/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
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).