From: Pavel Machek <pavel@ucw.cz>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>, Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
linux-kernel@vger.kernel.org
Subject: Re: suspend-related lockdep warning
Date: Sat, 1 Dec 2007 08:33:44 +0000 [thread overview]
Message-ID: <20071201083343.GA4446@ucw.cz> (raw)
In-Reply-To: <20071128024355.5931c6ec.akpm@linux-foundation.org>
Hi!
> 2.6.24-rc3-mm2 (which will be released if it boots on two more machines and
> if I stay awake) will say this during suspend-to-RAM on the Vaio:
>
> [ 91.876445] Syncing filesystems ... done.
> [ 92.382595] Freezing user space processes ... WARNING: at kernel/lockdep.c:2662 check_flags()
> [ 92.384000] Pid: 1925, comm: dbus-daemon Not tainted 2.6.24-rc3-mm2 #32
> [ 92.384177] [<c0104a74>] show_trace_log_lvl+0x12/0x25
> [ 92.384335] [<c01052ff>] show_trace+0xd/0x10
> [ 92.384469] [<c01059be>] dump_stack+0x55/0x5d
> [ 92.384605] [<c0136a29>] check_flags+0x7f/0x11a
> [ 92.384746] [<c0139cfb>] lock_acquire+0x3a/0x86
> [ 92.384886] [<c031f4de>] _spin_lock+0x26/0x53
> [ 92.385023] [<c0141d3b>] refrigerator+0x13/0xc8
> [ 92.385163] [<c01274c8>] get_signal_to_deliver+0x32/0x3fb
> [ 92.385326] [<c01030f4>] do_notify_resume+0x8c/0x699
> [ 92.385476] [<c0103c18>] work_notifysig+0x13/0x1b
> [ 92.385620] =======================
> [ 92.385719] irq event stamp: 309
> [ 92.385809] hardirqs last enabled at (309): [<c0103c79>] syscall_exit_work+0x11/0x26
> [ 92.386045] hardirqs last disabled at (308): [<c0103b42>] syscall_exit+0x14/0x25
> [ 92.386265] softirqs last enabled at (0): [<c011bea5>] copy_process+0x374/0x130e
> [ 92.386491] softirqs last disabled at (0): [<00000000>] 0x0
> [ 92.392457] (elapsed 0.00 seconds) done.
> [ 92.392581] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
> [ 92.392882] PM: Entering mem sleep
> [ 92.392974] Suspending console(s)
>
> this has been happening for quite some time and might even be happening in
> mainline.
Is it complaining that we entered refrigerator with irqs disabled?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2007-12-02 12:34 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-28 10:43 suspend-related lockdep warning Andrew Morton
2007-11-28 22:06 ` Rafael J. Wysocki
2007-12-01 8:33 ` Pavel Machek [this message]
2007-12-02 20:33 ` Rafael J. Wysocki
2007-12-03 6:26 ` Andrew Morton
2007-12-03 22:34 ` Rafael J. Wysocki
2007-12-04 1:45 ` Andrew Morton
2007-12-06 0:21 ` Rafael J. Wysocki
2007-12-06 10:31 ` Peter Zijlstra
2007-12-06 12:01 ` Andrew Morton
2007-12-06 12:04 ` Ingo Molnar
2007-12-06 12:04 ` Peter Zijlstra
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=20071201083343.GA4446@ucw.cz \
--to=pavel@ucw.cz \
--cc=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=rjw@sisk.pl \
/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).