From: Avi Kivity <avi@redhat.com>
To: Sasha Levin <levinsasha928@gmail.com>
Cc: paulmck@linux.vnet.ibm.com,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: rcu: INFO: rcu_preempt detected stalls on CPUs/tasks on v3.6
Date: Thu, 26 Jul 2012 14:42:51 +0300 [thread overview]
Message-ID: <50112D3B.4020201@redhat.com> (raw)
In-Reply-To: <500ED719.2010002@gmail.com>
On 07/24/2012 08:10 PM, Sasha Levin wrote:
> [ 215.026612] NMI backtrace for cpu 1
> [ 215.026612] CPU 1
> [ 215.026612] Pid: 2395, comm: pageattr-test Tainted: G W 3.5.0-sasha-01644-g824681b #267
> [ 215.026612] RIP: 0010:[<ffffffff8109bd5a>] [<ffffffff8109bd5a>] native_write_msr_safe+0xa/0x10
> [ 215.026612] RSP: 0018:ffff88001b803f70 EFLAGS: 00000046
> [ 215.026612] RAX: 0000000000000000 RBX: 000000000000ef80 RCX: 000000000000080b
> [ 215.026612] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000080b
> [ 215.026612] RBP: ffff88001b803f70 R08: 00003ffffffff000 R09: ffff880000000000
> [ 215.026612] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
> [ 215.026612] R13: ffff880007a98000 R14: ffff88001fc3a4b8 R15: ffff880000000000
> [ 215.026612] FS: 0000000000000000(0000) GS:ffff88001b800000(0000) knlGS:0000000000000000
> [ 215.026612] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [ 215.026612] CR2: 000000000000000c CR3: 0000000019dcf000 CR4: 00000000000406e0
> [ 215.026612] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 215.026612] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [ 215.026612] Process pageattr-test (pid: 2395, threadinfo ffff88000ced0000, task ffff88000d773000)
> [ 215.026612] Stack:
> [ 215.026612] ffff88001b803f88 ffffffff81095d07 000000000000ef80 ffff88001b803fa8
> [ 215.026612] ffffffff810901c4 ffff88000ced1db0 0000000000007a98 ffff88000ced1d00
> [ 215.026612] ffffffff8369c4af ffff88000ced1c78 <EOI> ffff88000ced1d00 ffffffff8369aeb4
> [ 215.026612] Call Trace:
> [ 215.026612] <IRQ>
> [ 215.026612] [<ffffffff81095d07>] native_apic_msr_eoi_write+0x27/0x30
> [ 215.026612] [<ffffffff810901c4>] smp_apic_timer_interrupt+0x34/0xa0
> [ 215.026612] [<ffffffff8369c4af>] apic_timer_interrupt+0x6f/0x80
> [ 215.026612] <EOI>
> [ 215.026612] [<ffffffff8369aeb4>] ? retint_restore_args+0x13/0x13
> [ 215.026612] [<ffffffff810a2cb2>] ? lookup_address+0x112/0x170
> [ 215.026612] [<ffffffff810a32ae>] print_split+0x7e/0x200
> [ 215.026612] [<ffffffff810a4300>] pageattr_test+0x80/0x4a0
> [ 215.026612] [<ffffffff8114a2f8>] ? trace_hardirqs_on_caller+0x118/0x140
> [ 215.026612] [<ffffffff83696cbe>] ? schedule_timeout+0x2ce/0x370
> [ 215.026612] [<ffffffff8369aeb4>] ? retint_restore_args+0x13/0x13
> [ 215.026612] [<ffffffff810a4720>] ? pageattr_test+0x4a0/0x4a0
> [ 215.026612] [<ffffffff810a473f>] do_pageattr_test+0x1f/0x50
> [ 215.026612] [<ffffffff8110607d>] kthread+0xad/0xc0
> [ 215.026612] [<ffffffff8369cdb4>] kernel_thread_helper+0x4/0x10
> [ 215.026612] [<ffffffff8369aeb4>] ? retint_restore_args+0x13/0x13
> [ 215.026612] [<ffffffff81105fd0>] ? kthread_flush_work_fn+0x10/0x10
> [ 215.026612] [<ffffffff8369cdb0>] ? gs_change+0x13/0x13
> [ 215.026612] Code: 00 55 89 f9 48 89 e5 0f 32 45 31 c0 89 c7 48 89 d0 44 89 06 48 c1 e0 20 89 f9 5d 48 09 c8 c3 66 90 55 89 f0 89 f9 48 89 e5 0f 30 <31> c0 5d c3 66 90 55 89 f9 48 89 e5 0f 33 89 c7 48 89 d0 5d 48
This is immediately after the EOI. It looks like the timer interrupt is
stuck somehow. Can you run kvm_stat and confirm?
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-07-26 11:43 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-24 17:10 rcu: INFO: rcu_preempt detected stalls on CPUs/tasks on v3.6 Sasha Levin
2012-07-24 17:40 ` Paul E. McKenney
2012-07-24 20:55 ` Sasha Levin
2012-07-25 8:36 ` Michael Wang
2012-07-25 21:16 ` Sasha Levin
2012-07-26 5:10 ` Michael Wang
2012-07-25 9:06 ` Michael Wang
2012-07-26 11:42 ` Avi Kivity [this message]
2012-07-27 11:27 ` Sasha Levin
2012-07-29 12:48 ` Avi Kivity
2012-07-29 21:05 ` Sasha Levin
2012-07-30 5:36 ` Avi Kivity
2012-07-30 9:13 ` Sasha Levin
2012-07-30 9:33 ` Avi Kivity
2012-07-30 12:43 ` Sasha Levin
2012-07-30 13:17 ` Avi Kivity
2012-08-05 16:55 ` Sasha Levin
2012-08-06 17:21 ` John Stultz
2012-08-06 18:12 ` John Stultz
2012-08-06 18:20 ` John Stultz
2012-08-06 18:28 ` Sasha Levin
2012-08-06 20:31 ` John Stultz
2012-08-06 20:35 ` Sasha Levin
2012-08-07 5:05 ` Michael Wang
2012-08-07 5:40 ` John Stultz
2012-08-07 10:24 ` Sasha Levin
2012-08-08 2:20 ` Michael Wang
2012-08-06 19:24 ` Sasha Levin
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=50112D3B.4020201@redhat.com \
--to=avi@redhat.com \
--cc=levinsasha928@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=paulmck@linux.vnet.ibm.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.