From: Andrew Morton <akpm@linux-foundation.org>
To: linux-mm@kvack.org
Cc: Andy Whitcroft <apw@shadowen.org>, Christoph Lameter <clameter@sgi.com>
Subject: 2.6.21-rc7-mm1 on test.kernel.org
Date: Tue, 24 Apr 2007 13:06:01 -0700 [thread overview]
Message-ID: <20070424130601.4ab89d54.akpm@linux-foundation.org> (raw)
An amd64 machine is crashing badly.
http://test.kernel.org/abat/84767/debug/console.log
VFS: Mounted root (ext3 filesystem) readonly.
Freeing unused kernel memory: 308k freed
INIT: version 2.86 booting
Bad page state in process 'init'
page:ffff81007e492628 flags:0x0100000000000000 mapping:0000000000000000 mapcount:0 count:1
Trying to fix it up, but a reboot is needed
Backtrace:
Call Trace:
[<ffffffff80250d3c>] bad_page+0x74/0x10d
[<ffffffff80253090>] free_hot_cold_page+0x8d/0x172
[<ffffffff802531cb>] free_hot_page+0xb/0xd
[<ffffffff8025a9b7>] free_pgd_range+0x274/0x467
[<ffffffff8025ac2a>] free_pgtables+0x80/0x8f
[<ffffffff8026139c>] exit_mmap+0x90/0x11a
[<ffffffff802270dd>] mmput+0x29/0x98
Bad page state in process 'hotplug'
page:ffff81017e458bb0 flags:0x0a00000000000000 mapping:0000000000000000 mapcount:0 count:1
Trying to fix it up, but a reboot is needed
Backtrace:
Call Trace:
[<ffffffff80250d3c>] bad_page+0x74/0x10d
[<ffffffff80253090>] free_hot_cold_page+0x8d/0x172
[<ffffffff802531cb>] free_hot_page+0xb/0xd
[<ffffffff80227074>] __mmdrop+0x68/0xa8
[<ffffffff80222911>] schedule_tail+0x48/0x86
[<ffffffff8020960c>] ret_from_fork+0xc/0x25
So free_pgd_range() is freeing a refcount=1 page. Can anyone see what
might be causing this? The quicklist code impacts this area more than
anything else..
Naturally, I can't reproduce it (no amd64 boxen). A bisection search would
be wonderful.
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next reply other threads:[~2007-04-24 20:06 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-24 20:06 Andrew Morton [this message]
2007-04-24 20:21 ` 2.6.21-rc7-mm1 on test.kernel.org Christoph Lameter
2007-04-24 20:27 ` Andrew Morton
2007-04-24 20:32 ` Christoph Lameter
2007-04-24 20:43 ` Andrew Morton
2007-04-24 20:52 ` Christoph Lameter
2007-04-24 21:12 ` Andy Whitcroft
2007-04-24 21:18 ` Andrew Morton
2007-04-24 21:22 ` Serial console problem in 2.6.21-rc7-mm1 and earlier Christoph Lameter
2007-04-25 15:32 ` John Stoffel
2007-04-25 15:39 ` Christoph Lameter
2007-04-25 16:22 ` John Stoffel
2007-04-25 16:23 ` Christoph Lameter
2007-04-25 17:44 ` John Stoffel
2007-04-24 21:30 ` 2.6.21-rc7-mm1 on test.kernel.org Christoph Lameter
2007-04-24 21:36 ` Andrew Morton
2007-04-24 21:46 ` Andy Whitcroft
2007-04-25 0:16 ` Andy Whitcroft
2007-04-25 0:34 ` Badari Pulavarty
2007-04-25 0:44 ` Andy Whitcroft
2007-04-25 1:03 ` Badari Pulavarty
2007-04-25 6:39 ` Christoph Lameter
2007-04-25 8:21 ` Andy Whitcroft
2007-04-25 8:40 ` Andrew Morton
2007-04-25 15:15 ` Christoph Lameter
2007-04-24 21:53 ` Christoph Lameter
2007-04-24 22:27 ` Badari Pulavarty
2007-04-24 22:51 ` Andrew Morton
2007-04-24 23:32 ` Andy Whitcroft
2007-04-25 0:07 ` Andy Whitcroft
2007-04-25 0:51 ` Badari Pulavarty
2007-04-25 1:22 ` Andrew Morton
2007-04-25 6:23 ` Christoph Lameter
2007-04-25 6:38 ` Andrew Morton
2007-04-25 6:58 ` Christoph Lameter
2007-04-25 6:21 ` Christoph Lameter
2007-04-24 23:59 ` Badari Pulavarty
2007-04-25 1:26 ` Andrew Morton
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