[Bug 16019] New: Resume from hibernate corrupts ext4

[Bug 16019] New: Resume from hibernate corrupts ext4

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https://bugzilla.kernel.org/show_bug.cgi?id=16019

           Summary: Resume from hibernate corrupts ext4
           Product: Power Management
           Version: 2.5
    Kernel Version: 2.6.33.4-95
          Platform: All
        OS/Version: Linux
              Tree: Fedora
            Status: NEW
          Severity: high
          Priority: P1
         Component: Hibernation/Suspend
        AssignedTo: power-management_other@kernel-bugs.osdl.org
        ReportedBy: lowe@brown.edu
                CC: fs_ext4@kernel-bugs.osdl.org
        Regression: No


Overview: System appears to hibernate successfully. Upon resume at first sight
all seems well until one discovers it is no longer possible to write to disk.

Steps to reproduce:

1) Hibernate system to disk. (Note suspend to ram seems to work ok).

2) Resume from disk.

3) System starts up ok, but disk seems to be mounted read only. Sometimes
resume just fails and system auto reboots itself and fixes the ext4 disk
errors.

4) Rebooting seems to fix the disk issues.

Expected result:
Resume from hibernate should work ok.

System info: Fedora 13 kernel  2.6.33.4-95.fc13.x86_64
Dell Latitude D630, 2G ram, 4G swap

Attached log messages from suspend/resume cycle. 

First ext4 error is

May 20 06:28:41 trillian kernel: EXT4-fs error (device dm-0):
ext4_mb_generate_buddy: EXT4-fs: group 26: 1161 blocks in bitmap, 1149 in gd
May 20 06:28:41 trillian kernel: JBD: Spotted dirty metadata buffer (dev =
dm-0, blocknr = 0). There's a risk of filesystem corruption in case of system
crash.

then it ends with lots of

May 20 06:50:20 trillian kernel: EXT4-fs error (device dm-0): mb_free_blocks:
double-free of inode 0's block 872631(bit 20663 in group 26)
May 20 06:50:20 trillian kernel: EXT4-fs error (device dm-0): mb_free_blocks:
double-free of inode 0's block 872632(bit 20664 in group 26)

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--- Comment #1 from David Lowe <lowe@brown.edu>  2010-05-20 22:55:31 ---
Created an attachment (id=26478)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=26478)
log messages for hibernate/resume cycle

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Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
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                 CC|                            |rjw@sisk.pl
             Blocks|                            |7216




--- Comment #2 from Rafael J. Wysocki <rjw@sisk.pl>  2010-05-20 23:00:33 ---
What kind of HDD is the filesystem on?

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Theodore Tso <tytso@mit.edu> changed:

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                 CC|                            |tytso@mit.edu




--- Comment #3 from Theodore Tso <tytso@mit.edu>  2010-05-20 23:36:50 ---
Is this reliably reproducible?  It looks like a block allocation is getting
corrupted when you hibernate.  

What are you using as your hibernation partition?

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Eric Sandeen <sandeen@redhat.com> changed:

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                 CC|                            |sandeen@redhat.com




--- Comment #4 from Eric Sandeen <sandeen@redhat.com>  2010-05-21 00:10:59 ---
David isn't alone in this ... others have reported it.

Sadly I haven't had time to look into it.

https://bugzilla.redhat.com/show_bug.cgi?id=556560

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--- Comment #5 from David Lowe <lowe@brown.edu>  2010-05-21 10:36:07 ---
(In reply to comment #3)
> Is this reliably reproducible?  It looks like a block allocation is getting
> corrupted when you hibernate.  
> 
> What are you using as your hibernation partition?

The disk is a 
ATA toshiba mk6037gsx (sata harddrive) set up as a 
lvm2 volume (28Gb) partitioned as 24 Gb ext4 plus 4 Gb swap

As far as I know, the swap is the hibernate partition.
Am using pm-hibernate or standard gnome tools to hibernate.

The problem happens every time I hibernate. Let me know what other info would
be useful.

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--- Comment #6 from Eric Sandeen <sandeen@redhat.com>  2010-05-21 17:10:58 ---
Just to test a theory, could you try doing "hdparm -W" on your disk(s) to check
the write cache status?

If it's 1 (on), then prior to hibernate, can you try hdparm -W 0 on the disk(s)
and see if the problem persists?  I'm wondering if it's possible that data in
the drive's write cache got lost when the system powered down, if it wasn't
properly flushed during hibernate.

You'll want to do hdparm -W 1 later to turn them back on if that was the
original state.

Thanks,

-Eric

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--- Comment #7 from David Lowe <lowe@brown.edu>  2010-05-21 18:00:27 ---
(In reply to comment #6)
> Just to test a theory, could you try doing "hdparm -W" on your disk(s) to check
> the write cache status?
> 
> If it's 1 (on), then prior to hibernate, can you try hdparm -W 0 on the disk(s)
> and see if the problem persists?  I'm wondering if it's possible that data in
> the drive's write cache got lost when the system powered down, if it wasn't
> properly flushed during hibernate.
> 
> You'll want to do hdparm -W 1 later to turn them back on if that was the
> original state.
> 
> Thanks,
> 
> -Eric

I gave that a try and did not find any difference.

The original state was 1 (on) so I set it to 0 and did a hibernate. 
The system comes back up with the unwritable disk as before.

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--- Comment #8 from Eric Sandeen <sandeen@redhat.com>  2010-05-21 18:04:40 ---
Thanks for testing ... so much for that theory.

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--- Comment #9 from Eric Sandeen <sandeen@redhat.com>  2010-05-21 18:25:04 ---
David, was that test done after a fresh/clean reboot, or was there a previous
failed hibernate before the test?  (I assume you have to reboot when you hit
the error, but just checking)

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--- Comment #10 from David Lowe <lowe@brown.edu>  2010-05-21 19:58:58 ---
(In reply to comment #9)
> David, was that test done after a fresh/clean reboot, or was there a previous
> failed hibernate before the test?  (I assume you have to reboot when you hit
> the error, but just checking)

Yes, the test was done after a fresh reboot.

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--- Comment #11 from David Lowe <lowe@brown.edu>  2010-05-22 00:37:52 ---
Created an attachment (id=26491)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=26491)
backtrace

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--- Comment #12 from David Lowe <lowe@brown.edu>  2010-05-22 00:40:16 ---
Previously I had been initiating hibernate from a graphic environment. Just
tried doing it from runlevel 3 and the logs now show a kernel oops just before
hibernate ends.

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--- Comment #13 from Eric Sandeen <sandeen@redhat.com>  2010-05-22 04:34:20 ---
David, that's not an oops just a warning, and it's unrelated to this problem
(fixed in fedora now, too, FWIW, kernel -102 or so).

see https://bugzilla.kernel.org/show_bug.cgi?id=15906#c26 & subsequent
comments.

-Eric

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--- Comment #14 from David Lowe <lowe@brown.edu>  2010-05-22 10:11:37 ---
(In reply to comment #13)
> David, that's not an oops just a warning, and it's unrelated to this problem
> (fixed in fedora now, too, FWIW, kernel -102 or so).
> 
> see https://bugzilla.kernel.org/show_bug.cgi?id=15906#c26 & subsequent
> comments.
> 
> -Eric

I tried kernel 2.6.33.4-106.fc13.x86_64 and no longer get the warning.

However the ext4 errors are back with a vengeance -- auto fsck on reboot now
fails and a manual fsck is needed to repair the disk.

--- Comment #15 from Eric Sandeen <sandeen@redhat.com>  2010-05-22 17:03:03 ---
Testing on F13 in an x86 guest with pm-hibernate from runlevel 3 doesn't trip
up the error, so it's not something blindingly stupid/obvious/reproducible ...

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--- Comment #16 from Eric Sandeen <sandeen@redhat.com>  2010-05-22 17:10:04 ---
David, do you know if this regressed for you at some point?  Has it ever
worked?

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--- Comment #17 from Eric Sandeen <sandeen@redhat.com>  2010-05-24 14:59:33 ---
Based on another internal redhat bug suggestion - does booting with the
"iommu=soft" kernel parameter affect the bug at all?

thanks,
-Eric

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--- Comment #18 from David Lowe <lowe@brown.edu>  2010-05-24 17:00:01 ---
(In reply to comment #17)
> Based on another internal redhat bug suggestion - does booting with the
> "iommu=soft" kernel parameter affect the bug at all?
> 
> thanks,
> -Eric

Back in Fedora 11 everything was working fine. With Fedora 12 so many things
regressed at the same time that testing was impractical (I think mostly intel
stack related...). I think suspend to ram worked fine, and hibernation would
just freeze. However with Fedora 13 I am really just left with this one
problem, hibernation. 

iommu=soft gave me one clean hibernation from inside gnome, but the second
attempt gave me the same ext4-fs errors

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--- Comment #19 from David Lowe <lowe@brown.edu>  2010-05-28 23:03:31 ---
I switched over to Ubuntu 10.04 and no longer have problems with hibernate or
suspend. I also tested this against the vanilla 2.6.33.4 kernel under ubuntu,
without issue.

The main differences seem to be:
(1) I am no longer using an lvm2 volume with an ext4 partition, just a simple
extended partition with ext4
(2) fedora patches to the kernel
(3) fedora/ubuntu differences in pm-utils, if any

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--- Comment #20 from Eric Sandeen <sandeen@redhat.com>  2010-06-01 16:02:08 ---
I suppose it's a lot to ask, but I wonder if it'd be possible to test Fedora
w/o LVM to further narrow this down?

Thanks,
-Eric

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--- Comment #21 from Eric Sandeen <sandeen@redhat.com>  2010-06-16 03:10:10 ---
Do you be happen to be using i915 video?

  Bug 13811 -  [GM965/KMS/UXA] memory corruption on resume from hibernate

-Eric

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Klaus Lichtenwalder <lichtenwalder@acm.org> changed:

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--- Comment #22 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2010-06-17 15:49:04 ---
Hi,

came here from "my" fedora bugzilla
(https://bugzilla.redhat.com/show_bug.cgi?id=603897) I found this bug. I'm
having it on an Aspire One with SSD. Guess the lvm theory is very reasonable.
If I can spare the time I'll try the alternate install this weekend.
Btw, I also got the following messages:
ERROR: sil: invalid metadata checksum in area 3 on /dev/dm-1
ERROR: sil: invalid metadata checksum in area 4 on /dev/dm-1

with /dev/dm-1 being the swap partition.

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--- Comment #23 from Eric Sandeen <sandeen@redhat.com>  2010-06-17 15:51:51 ---
Klaus, see also comment #21, what video driver do you have?

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--- Comment #24 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2010-06-17 16:27:22 ---
Eric,

I have a 
[root@linpus ~]# lspci|grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GME Express
Integrated Graphics Controller (rev 03)
[root@linpus ~]# 

Xorg sees it as
[    35.777] (II) intel(0): Integrated Graphics Chipset: Intel(R) 945GME
[    35.777] (--) intel(0): Chipset: "945GME"

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--- Comment #25 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2010-06-17 16:35:04 ---
And sorry, another bit I forgot. I've been using ubuntu 10.04 also for some
time with lots of suspending and hibernating, and never had  filesystem
troubles. And as stated in Comment #19 ubuntu doesn't use lvm in a normal
install.

Klaus

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--- Comment #26 from Eric Sandeen <sandeen@redhat.com>  2010-06-17 16:47:50 ---
That may be affected.  You might try unloading/blacklisting i915 and test
hibernate again, either from plain VGA X, or a text console, see if it makes a
difference.  (I don't know if ubuntu has a different i915 driver... feel free
to test the lvm theory too!)

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--- Comment #27 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2010-06-17 19:16:17 ---
Eric,
just did some tests with a clean initrd without i915. No fs corruption. While
as soon as the i915 module is in use I get reliable fs corruption. So. Guess
the lvm theory is dead... It's the i915 module

Klaus

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--- Comment #28 from Eric Sandeen <sandeen@redhat.com>  2010-06-17 19:24:40 ---
ok ... I'm probably going to end up duping this one over to the i915 bug then.

Thanks for testing!

-Eric

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--- Comment #29 from David Lowe <lowe@brown.edu>  2010-06-17 21:37:29 ---
I'm using the i915 module on ubuntu 10.04 without issue.

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--- Comment #30 from Eric Sandeen <sandeen@redhat.com>  2010-06-17 21:45:37 ---
(In reply to comment #29)
> I'm using the i915 module on ubuntu 10.04 without issue.

Which kernel is that?

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--- Comment #31 from David Lowe <lowe@brown.edu>  2010-06-17 23:37:11 ---
the ubuntu kernel 2.6.32.22 as well as the vanilla kernel
2.6.33.4

I suspect assigning this to an i915 bug is premature, since when I tested this
under runlevel 3 in fedora 13, i didn't see any problem until I stressed the
system a bit.

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--- Comment #32 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2010-06-18 06:32:19 ---
Well, just going in runlevel 3 is not enough, as drm loads i915 even then, from
initramfs. You need to create an initramfs without the i915 moule.

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--- Comment #33 from Mihai Harpau <mishu@piatafinanciara.ro>  2010-06-18 09:40:36 ---
If I do the following on Fedora 13:
- boot on runlevel 3 with "nomodeset 3" on grub line
- from root prompt run "modprobe -r i915"
- run pm-hibernate

then I don't see anymore the messages from comment 1 and all seems to be fine.

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--- Comment #34 from Eric Sandeen <sandeen@redhat.com>  2010-06-18 13:59:35 ---
Ok.  So, I think i915 is certainly one root cause of this problem.  There could
be others.

David, are you certain that you can hit it without i915 loaded?  If so then
there is more to track down.

Thanks,

-Eric

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--- Comment #35 from Rafael J. Wysocki <rjw@sisk.pl>  2010-06-18 14:39:17 ---
Also, I'd like to know if the kernels the issue is reproducible with are
64-bit or 32-bit, and if 32-bit, then what memory .config options are set
(ie. is highmem set and if so, what kind of highmem etc.).

I'm unable to reproduce the issue with my i915 hardware and a 64-bit kernel,
FWIW.

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--- Comment #36 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2010-06-18 14:51:28 ---
Created an attachment (id=26846)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=26846)
Config for 32bit kernel

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[Bug 16019] Resume from hibernate corrupts ext4

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https://bugzilla.kernel.org/show_bug.cgi?id=16019





--- Comment #37 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2010-06-18 14:52:04 ---
In my case it's a Fedora 13 32bit kernel. Just for completeness I attached the
config (Comment 36).

Klaus

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[Bug 16019] Resume from hibernate corrupts ext4

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--- Comment #38 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2010-07-01 05:04:30 ---
I don'r know whether this is related, but one in a while I have a lockup of the
X server. I can move the mouse, and switch to the tty consoles, and log in, but
for a working X I have to reboot. Yesterday I saw in dmesg:
[drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
render error detected, EIR: 0x00000000
[drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting
302900 at 302900)

Klaus

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[Bug 16019] Resume from hibernate corrupts ext4

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https://bugzilla.kernel.org/show_bug.cgi?id=16019





--- Comment #39 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2010-07-16 21:13:56 ---
Well, it looks like the newest Fedora 13 kernel hibernates just fine without fs
corruption

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[Bug 16019] Resume from hibernate corrupts ext4

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https://bugzilla.kernel.org/show_bug.cgi?id=16019


Steven Bakker <sb@monkey-mind.net> changed:

           What    |Removed                     |Added
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                 CC|                            |sb@monkey-mind.net




--- Comment #40 from Steven Bakker <sb@monkey-mind.net>  2010-07-27 20:37:22 ---
I'm running 2.6.33.6-147.fc13.x86_64 with an i915, and unfortunately, it still
corrupts the ext4 FS on hibernate/wakeup.

(Off-topic: I'd be happy for my laptop to just auto-suspend when it's running
on battery, but that doesn't seem to be configurable: it's hibernate or
nothing.)

Steven

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[Bug 16019] Resume from hibernate corrupts ext4

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Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
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             Status|NEW                         |NEEDINFO




--- Comment #41 from Rafael J. Wysocki <rjw@sisk.pl>  2011-01-16 22:34:39 ---
Is the problem still present in 2.6.37?

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[Bug 16019] Resume from hibernate corrupts ext4

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--- Comment #42 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2011-01-17 18:13:42 ---
Just got me 2.6.37 from rawhide and will test

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[Bug 16019] Resume from hibernate corrupts ext4

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--- Comment #43 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2011-01-30 11:12:09 ---
I'm running 2.6.37-2.fc15.i686 from updates-testing for 12 days now, with at
least one suspend-cycle a day and it's working fine (up to now). So, for me it
seems the problem is gone

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[Bug 16019] Resume from hibernate corrupts ext4

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https://bugzilla.kernel.org/show_bug.cgi?id=16019





--- Comment #44 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2011-02-15 15:31:10 ---
Hi, 
running 2.6.37-2.fc15.i686 works fine, but using rawhide
kernel-2.6.38-0.rc4.git0.2.fc15.i686 or kernel-2.6.38-0.rc3.git0.1.fc15.i686
shows errors very fast! Even faster than in 2.6.35... Most of the time in
/sys...

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[Bug 16019] Resume from hibernate corrupts ext4

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https://bugzilla.kernel.org/show_bug.cgi?id=16019





--- Comment #45 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2011-03-21 15:04:18 ---
Still the only kernel working is the one from comment #44. I tried the kernel
from fc15 alpha, kernel-2.6.38-1.fc15, but no cigar. At most two resumes, then
I get a kernel oops, with dentry_* on top. I can try to manually get a trace,
if this helps.

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[Bug 16019] Resume from hibernate corrupts ext4

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Philippe Planchon <philippe.planchon@gmail.com> changed:

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                 CC|                            |philippe.planchon@gmail.com




--- Comment #46 from Philippe Planchon <philippe.planchon@gmail.com>  2011-05-25 21:10:51 ---
I'm running 2.6.35.13-91.fc14.x86_64 and have the same ext4-fs issue on resume
after hibernate.

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[Bug 16019] Resume from hibernate corrupts ext4

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--- Comment #47 from Klaus Lichtenwalder <lichtenwalder@acm.org>  2011-05-26 16:32:54 ---
right now on 2.6.38.6-26.rc1.fc15.i686 (from Fedora 15) the oops happens very
regularly...

Klaus

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[Bug 16019] Resume from hibernate corrupts ext4

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Zhang Rui <rui.zhang@intel.com> changed:

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                 CC|                            |rui.zhang@intel.com




--- Comment #48 from Zhang Rui <rui.zhang@intel.com>  2012-01-18 02:10:40 ---
It's great that kernel bugzilla is back.

can you please verify if the problem still exists in the latest upstream
kernel?

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[Bug 16019] Resume from hibernate corrupts ext4

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Zhang Rui <rui.zhang@intel.com> changed:

           What    |Removed                     |Added
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             Status|NEEDINFO                    |CLOSED
         Resolution|                            |INSUFFICIENT_DATA




--- Comment #49 from Zhang Rui <rui.zhang@intel.com>  2012-05-24 07:34:11 ---
bug closed as there is no response from the bug reporter.
please feel free to reopen it if the problem still exists in the latest
upstream kernel.

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