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From: Jesper Juhl <jesper.juhl@gmail.com>
To: Hugh Dickins <hugh@veritas.com>
Cc: Dave Jones <davej@redhat.com>, Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org
Subject: Re: 2.6.15-mm2
Date: Mon, 9 Jan 2006 19:48:54 +0100	[thread overview]
Message-ID: <9a8748490601091048x46716e25u2fe2ebe9b5fbc9bb@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.61.0601091819160.14800@goblin.wat.veritas.com>

On 1/9/06, Hugh Dickins <hugh@veritas.com> wrote:
> On Mon, 9 Jan 2006, Jesper Juhl wrote:
> > On 1/9/06, Dave Jones <davej@redhat.com> wrote:
> > > On Mon, Jan 09, 2006 at 06:47:01PM +0100, Jesper Juhl wrote:
> > >
> > >  > Here's what bad_page printed for me :
> > >  >
> > >  > Bad page state in process 'kded'
> > >  > [<c0103e77>] dump_stack+0x17/0x20
> > >  > [<c0148999>] bad_page+0x69/0x160
> > >
> > > Odd, there should be more state between the 'Bad page'
> > > and the backtrace.
> > >
> > >     printk(KERN_EMERG "Bad page state in process '%s'\n"
> > >                 "page:%p flags:0x%0*lx mapping:%p mapcount:%d count:%d\n"
> > >                 "Trying to fix it up, but a reboot is needed\n"
> > >
> > > Did you aggressively trim that, or did it for some
> > > reason not get printed ?
> > >
> >
> > I did not trim that.
> >
> > All I did was add
> >
> >  printk(KERN_EMERG "we hit bad page, looping forever\n");
> >  while (1) {
> >     mdelay(1000);
> >  }
> >
> > to the end of bad_page()
>
> I'm afraid someone has recently "tidied up" bad_page, and missed out
> the most interesting KERN_EMERG of all.  No promises that this will
> actually help us more than the backtrace you've sent, but please give
> it another go with patch below applied.  Andrew, please pass along...
>
>
> Restore KERN_EMERG to each line printed by bad_page.
>
Ok, with that patch the page, flags, mapping, mapcount & count
information prints again.
I get the exact same backtrace as before though, but a slightly
different hexdump :

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
[<c02ac80d>] __sg_remove_sfp+0x4d/0xc0
[<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 53 e7 c1 d0 53 e7 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

One more note: the first time I booted the kernel with this patch X
failed to start. It started and blacked out the screen, at that point
the system hung, but not completely, I could still switch tty with
ctrl+alt+f? but all tty's I switched to were also completely black
with just a cursor in the top left corner. The system never recovered
from this state and I was forced to press the reset button.
The second time it booted up fine and launched kdm as usual to let me
log in and upon logging in it crashed as expected while launching KDE
(at that point I had switched over to tty1 and captured the crash dump
you see above).
So, it seems to me that we may have more than one bug.


--
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

  reply	other threads:[~2006-01-09 18:48 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           ` Jesper Juhl [this message]
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               ` 2.6.15-mm2 Jesper Juhl
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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