From: Andrew Morton <akpm@linux-foundation.org>
To: "Rafael J. Wysocki" <rjw@sisk.pl>, Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: linux-kernel@vger.kernel.org
Subject: suspend-related lockdep warning
Date: Wed, 28 Nov 2007 02:43:55 -0800 [thread overview]
Message-ID: <20071128024355.5931c6ec.akpm@linux-foundation.org> (raw)
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.
Also, a few seconds after resume has completed we get a whimper from the
hangcheck driver:
[ 1.762425] usb 2-1: configuration #1 chosen from 1 choice
[ 1.826548] input: Microsoft Microsoft Wireless Optical Mouse_ 1.00 as /class/input/input9
[ 1.866211] input: USB HID v1.11 Mouse [Microsoft Microsoft Wireless Optical Mouse_ 1.00] on usb-0000:00:1d.1-1
[ 5.757927] Hangcheck: hangcheck value past margin!
next reply other threads:[~2007-11-28 10:44 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-28 10:43 Andrew Morton [this message]
2007-11-28 22:06 ` suspend-related lockdep warning Rafael J. Wysocki
2007-12-01 8:33 ` Pavel Machek
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
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