From: Jesper Juhl <jesper.juhl@gmail.com>
To: Hugh Dickins <hugh@veritas.com>
Cc: Dave Jones <davej@redhat.com>, Andrew Morton <akpm@osdl.org>,
Doug Gilbert <dougg@torque.net>,
James Bottomley <James.Bottomley@steeleye.com>,
Nick Piggin <nickpiggin@yahoo.com.au>,
linux-kernel@vger.kernel.org
Subject: Re: 2.6.15-mm2
Date: Mon, 9 Jan 2006 20:39:21 +0100 [thread overview]
Message-ID: <9a8748490601091139pf5fb6a0v3c8b3bcb41b85940@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.61.0601091857430.15219@goblin.wat.veritas.com>
On 1/9/06, Hugh Dickins <hugh@veritas.com> wrote:
> On Mon, 9 Jan 2006, Jesper Juhl wrote:
> > Ok, with that patch the page, flags, mapping, mapcount & count
> > information prints again.
>
> Good, thanks.
>
> > I get the exact same backtrace as before though, but a slightly
> > different hexdump :
>
> (I find -mm's hexdump addition really irritating. Perhaps it could
> be helpful if properly formatted, but not that dump of bytes.)
>
> > Bad page state in process 'kded'
> > page:c1e75400 flags:0x00000000 mapping:00000000 mapcount:1 count:0
> > Trying to fix it up, but a reboot is needed
> > Backtrace:
> > [<c0103e77>] dump_stack+0x17/0x20
> > [<c0148999>] bad_page+0x69/0x160
> > [<c0148e92>] __free_pages_ok+0xa2/0x120
> > [<c0149c7f>] __free_pages+0x2f/0x60
> > [<c02acb63>] sg_page_free+0x23/0x30
> > [<c02abdb3>] sg_remove_scat+0x63/0xe0
> ....
>
> Having sent you the patch to restore the KERN_EMERGs, I then took a
> look at drivers/scsi/sg.c, and it looks as if changes have gone into
> 2.6.15-git which might make more urgent a fix we knew would be needed
> in some cases. Could you try the patch below and let us know if it
> fixes your problems? Thanks...
>
>
> Remove sg_rb_correct4mmap() and its nasty __put_page()s, which are liable
> to do quite the wrong thing. Instead allocate pages with __GFP_COMP, then
> high-orders should be safe for exposure to userspace by sg_vma_nopage(),
> without any further manipulations. Based on original patch by Nick Piggin.
>
Unfortunately that patch doesn't change a thing (except some
addresses, but that's exected) :-(
Here's the crash I just got with that patch applied :
Bad page state in process 'kded'
page:c1e87d00 flags:0x00000000 mapping:00000000 macount:1 count:0
Trying to fix it up, but a reboot is needed
Backtrace:
[<c0103e77>] dump_stack+0x17/0x20
[<c0148999>] bad_page+0x69/0x160
[<c0148e92>] __free_pages_ok+0xa2/0x120
[<c0149c7f>] __free_pages+0x2f/0x60
[<c02aca53>] sg_page_free+0x23/0x30
[<c02abcc3>] sg_remove_scat+0x63/0xe0
[<c02ac711>] __sg_remove_sfp+0x41/0xa0
[<c02ac927>] sg_remove_sfp+0xa7/0x120
[<c02a8b39>] sg_release+0x49/0xc0
[<c0166827>] __fput+0x167/0x1b0
[<c01666ab>] fput+0x3b/0x50
[<c0164efc>] filp_close+0x3c/0x80
[<c0164fa9>] sys_close+0x69/0x90
[<c0103009>] syscall_call+0x7/0xb
Hexdump:
000: ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00
010: d0 7c e8 c1 d0 7c e8 c1 ff ff ff ff 00 00 00 00
020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
040: 00 00 00 00 ff ff ff ff 00 00 00 00 00 00 00 00
050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
--
Jesper Juhl <jesper.juhl@gmail.com>
Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
Plain text mails only, please http://www.expita.com/nomime.html
next prev parent reply other threads:[~2006-01-09 19:39 UTC|newest]
Thread overview: 133+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-07 13:22 2.6.15-mm2 Andrew Morton
2006-01-07 13:23 ` 2.6.15-mm2 Andrew Morton
2006-01-07 15:05 ` 2.6.15-mm2 Reuben Farrelly
2006-01-07 21:31 ` 2.6.15-mm2 Andrew Morton
2006-01-07 22:06 ` 2.6.15-mm2 Reuben Farrelly
2006-01-07 23:15 ` 2.6.15-mm2 Reuben Farrelly
2006-01-07 23:40 ` 2.6.15-mm2 Andrew Morton
2006-01-10 10:15 ` 2.6.15-mm2 Reuben Farrelly
2006-01-10 10:30 ` 2.6.15-mm2 Andrew Morton
2006-01-10 10:58 ` 2.6.15-mm2 Reuben Farrelly
2006-01-10 10:47 ` 2.6.15-mm2 Ingo Molnar
2006-01-10 10:52 ` 2.6.15-mm2 Ingo Molnar
2006-01-10 10:58 ` 2.6.15-mm2 Ingo Molnar
2006-01-10 11:34 ` 2.6.15-mm2 Ingo Molnar
2006-01-10 12:28 ` 2.6.15-mm2 Reuben Farrelly
2006-01-10 12:42 ` 2.6.15-mm2 Andrew Morton
2006-01-10 13:16 ` 2.6.15-mm2 Ingo Molnar
2006-01-11 4:16 ` 2.6.15-mm2 Neil Brown
2006-01-11 5:15 ` 2.6.15-mm2 Reuben Farrelly
2006-01-11 5:30 ` 2.6.15-mm2 Andrew Morton
2006-01-11 5:30 ` 2.6.15-mm2 Andrew Morton
2006-01-11 10:49 ` 2.6.15-mm2 Reuben Farrelly
2006-01-11 11:05 ` 2.6.15-mm2 Andrew Morton
2006-01-11 11:13 ` 2.6.15-mm2 Jens Axboe
2006-01-11 11:40 ` 2.6.15-mm2 Reuben Farrelly
2006-01-11 11:56 ` 2.6.15-mm2 Jens Axboe
2006-01-11 14:39 ` 2.6.15-mm2 Reuben Farrelly
2006-01-11 14:52 ` 2.6.15-mm2 Jens Axboe
2006-01-11 14:55 ` 2.6.15-mm2 Jens Axboe
2006-01-11 19:23 ` 2.6.15-mm2 Reuben Farrelly
2006-01-11 19:45 ` 2.6.15-mm2 Jens Axboe
2006-01-11 19:53 ` 2.6.15-mm2 Jens Axboe
2006-01-12 3:49 ` 2.6.15-mm2 Reuben Farrelly
2006-01-12 8:00 ` 2.6.15-mm2 Tejun Heo
2006-01-12 8:22 ` 2.6.15-mm2 Jens Axboe
[not found] ` <43C61598.7050004@reub.net>
2006-01-12 11:18 ` 2.6.15-mm2 Tejun Heo
2006-01-12 12:05 ` 2.6.15-mm2 Reuben Farrelly
2006-01-12 12:31 ` 2.6.15-mm2 Ric Wheeler
2006-01-12 12:39 ` 2.6.15-mm2 Reuben Farrelly
2006-01-12 13:55 ` 2.6.15-mm2 Tejun Heo
2006-01-12 14:10 ` 2.6.15-mm2 Jens Axboe
2006-01-12 14:20 ` 2.6.15-mm2 Tejun Heo
2006-01-12 19:26 ` 2.6.15-mm2 Reuben Farrelly
2006-01-12 20:32 ` 2.6.15-mm2 Andrew Morton
2006-01-12 20:51 ` 2.6.15-mm2 Jeff Garzik
2006-01-13 4:49 ` 2.6.15-mm2 Reuben Farrelly
2006-01-11 21:44 ` 2.6.15-mm2 Neil Brown
2006-01-12 7:35 ` 2.6.15-mm2 Jens Axboe
2006-01-07 15:08 ` 2.6.15-mm2 Jesper Juhl
2006-01-09 17:47 ` 2.6.15-mm2 Jesper Juhl
2006-01-09 17:57 ` 2.6.15-mm2 Dave Jones
2006-01-09 18:01 ` 2.6.15-mm2 Jesper Juhl
2006-01-09 18:24 ` 2.6.15-mm2 Hugh Dickins
2006-01-09 18:48 ` 2.6.15-mm2 Jesper Juhl
2006-01-09 19:16 ` 2.6.15-mm2 Hugh Dickins
2006-01-09 19:21 ` 2.6.15-mm2 Hugh Dickins
2006-01-09 19:39 ` Jesper Juhl [this message]
2006-01-09 20:15 ` 2.6.15-mm Hugh Dickins
2006-01-09 20:30 ` 2.6.15-mm Jesper Juhl
2006-01-09 20:41 ` 2.6.15-mm Hugh Dickins
2006-01-09 20:46 ` [PATCH] fix Jesper's sg_page_free Bad page states Hugh Dickins
2006-01-09 20:44 ` 2.6.15-mm Mike Christie
2006-01-09 21:04 ` 2.6.15-mm Hugh Dickins
2006-01-07 16:20 ` 2.6.15-mm2: why is __get_page_state() global again? Adrian Bunk
2006-01-07 18:00 ` [-mm patch] drivers/block/amiflop.c: fix compilation Adrian Bunk
2006-01-07 18:19 ` [-mm patch] drivers/acpi/: make two functions static Adrian Bunk
2006-01-07 18:21 ` [-mm patch] kernel/synchro-test.c: make 5 " Adrian Bunk
2006-01-07 19:31 ` 2.6.15-mm2 Brice Goglin
2006-01-07 21:04 ` 2.6.15-mm2 Dave Jones
2006-01-07 21:26 ` 2.6.15-mm2 Brice Goglin
2006-01-07 21:29 ` 2.6.15-mm2 David S. Miller
2006-01-07 21:41 ` 2.6.15-mm2 Arjan van de Ven
2006-01-07 21:42 ` 2.6.15-mm2 Dave Jones
2006-01-07 21:50 ` 2.6.15-mm2 Brice Goglin
2006-01-07 22:13 ` 2.6.15-mm2 Dave Jones
2006-01-07 22:26 ` 2.6.15-mm2 Brice Goglin
2006-01-11 18:41 ` 2.6.15-mm2 Brice Goglin
2006-01-11 20:29 ` 2.6.15-mm2 Dave Jones
2006-01-11 21:50 ` 2.6.15-mm2 Dave Airlie
2006-01-11 21:56 ` 2.6.15-mm2 Dave Jones
2006-01-11 23:50 ` 2.6.15-mm2 Dave Airlie
2006-01-12 10:58 ` 2.6.15-mm2 Ulrich Mueller
2006-01-12 17:11 ` 2.6.15-mm2 Dave Jones
2006-01-12 18:11 ` 2.6.15-mm2 Ulrich Mueller
2006-01-12 20:37 ` 2.6.15-mm2 Dave Airlie
2006-01-12 21:03 ` 2.6.15-mm2 Alan Hourihane
2006-01-12 22:02 ` 2.6.15-mm2 Dave Airlie
2006-01-13 8:32 ` 2.6.15-mm2 Alan Hourihane
2006-01-13 16:49 ` 2.6.15-mm2 Dave Jones
2006-01-12 19:12 ` 2.6.15-mm2 Brice Goglin
2006-01-12 19:21 ` 2.6.15-mm2 Dave Jones
2006-01-07 22:58 ` 2.6.15-mm2 Andrew Morton
2006-01-07 23:38 ` 2.6.15-mm2 Brice Goglin
2006-01-08 12:24 ` 2.6.15-mm2 Andrew Morton
2006-01-08 14:39 ` 2.6.15-mm2 Brice Goglin
2006-01-08 18:56 ` 2.6.15-mm2 Andrew Morton
2006-01-08 12:28 ` 2.6.15-mm2 Andrew Morton
2006-01-08 14:14 ` 2.6.15-mm2 Brice Goglin
2006-01-07 20:51 ` Badness in __mutex_unlock_slowpath Andrew James Wade
2006-01-07 21:13 ` Arjan van de Ven
2006-01-08 8:53 ` Ingo Molnar
2006-01-07 21:06 ` 2.6.15-mm2: alpha broken Alexey Dobriyan
2006-01-07 23:48 ` Andrew Morton
2006-01-08 0:45 ` [PATCH -mm] fixup *at syscalls additions (alpha, sparc64) Alexey Dobriyan
2006-01-08 0:54 ` [PATCH -mm] Fixup arch/alpha/mm/init.c compilation Alexey Dobriyan
2006-01-08 12:31 ` 2.6.15-mm2: alpha broken Alexey Dobriyan
2006-01-11 2:24 ` Paul Jackson
2006-01-13 14:11 ` Adrian Bunk
2006-01-13 15:52 ` Paul Jackson
2006-01-13 16:37 ` Al Viro
2006-01-13 18:10 ` Paul Jackson
2006-01-13 18:19 ` Randy.Dunlap
2006-01-13 19:05 ` Thomas Gleixner
2006-01-13 21:08 ` Adrian Bunk
2006-01-13 21:12 ` Randy.Dunlap
2006-01-13 21:32 ` Adrian Bunk
2006-01-13 21:52 ` Paul Jackson
2006-01-13 22:18 ` Andrew Morton
2006-01-13 19:26 ` Andrew Morton
2006-01-13 21:05 ` Adrian Bunk
2006-01-08 0:40 ` 2.6.15-mm2 Alexander Gran
[not found] ` <200601080139.34774@zodiac.zodiac.dnsalias.org>
[not found] ` <20060107175056.3d7a2895.akpm@osdl.org>
2006-01-10 0:30 ` 2.6.15-mm2 Alexander Gran
2006-01-10 1:22 ` 2.6.15-mm2 Andrew Morton
2006-01-10 21:20 ` 2.6.15-mm2 Serge E. Hallyn
2006-01-07 21:51 2.6.15-mm2 Chuck Ebbert
2006-01-07 22:01 2.6.15-mm2 Chuck Ebbert
2006-01-08 8:16 2.6.15-mm2 Brown, Len
2006-01-08 14:23 ` 2.6.15-mm2 Brice Goglin
2006-01-08 8:19 2.6.15-mm2 Brown, Len
2006-01-08 9:40 ` 2.6.15-mm2 Reuben Farrelly
2006-01-08 17:58 2.6.15-mm2 Brown, Len
2006-01-08 18:08 2.6.15-mm2 Brown, Len
2006-01-08 18:18 2.6.15-mm2 Brown, Len
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