Hi Damian,
According to you output zram does not appear to be loaded, if it was we
would see a zram device, ie: /dev/zram0, /dev/zram1 (if your machine has
two processors, dual core, core duo, or hyperthreading).
You can remove the 3 following files:
/var/crash/zram-config.0.crash
PS: I think the --purge you performed previously might have removed the
faulty zram config file still in the system at that moment and solved
the issue in spite of the not installed package warning.
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I confirm that the new kernel 3.2.0-58-generic-pae works like a charm.
Thank you very much.
@meets (regarding comment #37): I still can't remove zram and don't know
what activates it. There is no zram in /etc/init.
$ dmesg | grep zram
[1.338734] zram: module is from the staging
Hi Damian, what does return sudo updatedb ; locate zram in the
console?
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Title:
Buffer I/O error on device zram0, logical block 515067
To
@meets
** Attachment added: output of $ locate zram
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1246664/+attachment/3925101/+files/zram
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This bug was fixed in the package linux - 3.2.0-57.87
---
linux (3.2.0-57.87) precise; urgency=low
[Steve Conklin]
* Release Tracking Bug
- LP: #1250622
[ Andy Whitcroft ]
* tools -- upgrade to common generic helper
- LP: #1205284
[ Kees Cook ]
* SAUCE:
Hello to all,
Thanks a lot! I am looking forward to seeing it in the repositories!
Best regards,
Mélodie
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Title:
Buffer I/O error on device
Hi,
On the T60 with 2 GB RAM it has ran during one hour, installing one by
one several little games using the Software Center, and having firefox
and htop running as well as pcmanfm. No problem met so far.
The now I am running the same machine and Ubuntu version with 512 MB ram
and it swaps a
The version currently in proposed (3.2.0-57.87) seems to fix the issue
here. If someone else seconds that, let's mark this as verified.
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Title:
Hello,
I am preparing the machine for tests as per your pointer to
https://wiki.ubuntu.com/Testing/EnableProposed
The new kernel 3.2.0-57 generic (and headers) is installed and running
in P4 Dell, almost ready to run on another machines, checkbox-gtk
installed: the package lacks a dependency to
Hardware 1:
P4 Dell tower. Here is enclosed the hardware submission (not yet appeared on
Launchpad but I add it as an attachment).
** Attachment added: submission.xml
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1246664/+attachment/3911946/+files/submission.xml
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Hi,
Here are two bug reports generated while testing hard on the P4 (trying to get
the RAM full, I'll have to retry with a limit on the kernel boot line because
the zram swap could never be used, instead it was the CPU which was fully used):
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
precise' to 'verification-done-precise'.
If verification is not done by 5 working days
Hi dambldor91,
I don't understand why you post about the former 3.2.0-55-generic kernel
where the bug didn't exist? What do you intend to say?
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@meets Why do you claim that it 3.2.0-55 is bug free? I first noticed
the bug in version 53 (generic-pae) and then in 54. Was it fixed in 55
and recreated in 56? @oibaf reported the bug in 3.2.0-55-powerpc-smp.
P.S. I will address your questions from the previous post as far as I
reach the buggy
Well no, mistake : it is not running although there is no I/O error
during boot. My bad.
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Title:
Buffer I/O error on device zram0, logical block
Hi Damian,
I just reinstalled the 3.2.0-55 generic to check, and yes here it does
not trigger errors. Only the next one does.
[melodie@peluche:~]$ uname -a
Linux peluche 3.2.0-55-generic #85-Ubuntu SMP Wed Oct 2 13:43:27 UTC 2013 i686
i686 i386 GNU/Linux
dmesg done just after reboot:
Mélodie: the 3.2.0-56.86 kernel does not yet contain the fix. This fix
has already been included in the git source tree, and will need to go
through the SRU process before being released. This bug will be
updated once this happens. Thank you.
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henrix: Thank you very much. I hope it will not be too long before it
will be gone through the SRU process and delivered.
Regards,
Mélodie
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[ 2.440692] zram: module is from the staging directory, the quality is unknown,
you have been warned.
[ 2.441048] zram: num_devices not specified. Using default: 1
[ 2.441050] zram: Creating 1 devices ...
[ 2.495601] Adding 3056956k swap on /dev/zram0. Priority:100 extents:1
across:3056956k SS
[
Hi,
Luis Henriques, I have updated to the new kernel 3.2.0-56 generic from
the repositories and the problem is back. I have reverted to your test
kernels, these packages:
http://people.canonical.com/~henrix/lp1246664/i386/
and from there the problem is solved. While doing so, the console stated
@Melodie: about:
E: zram-config: subprocess installed post-installation script returned error
exit status 1
see bug 996535.
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Title:
Hi Oibaf,
I my case it is mostly unrelated and really nothing very important. It happened
in a Synaptic started inside the chroot of Ubuntu-Builder, so the post-install
script was a bit confused I guess, because there were already /dev/zram*
created and in use.
Regards,
Mélodie
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Damian, thank you for testing. I'll make sure this fix will make its
way into the Ubuntu Precise kernel.
** Changed in: linux (Ubuntu)
Status: Confirmed = Triaged
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@Luis: where can I get the patch for this? I would like to suggest this
for upstream 3.2: https://lkml.org/lkml/2013/10/20/68
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Title:
Buffer I/O
Hi,
I had not found this bug n° #1246664 when seeking for bugs related to zram, and
I posted my own, however Oibaf found it and told me:
https://bugs.launchpad.net/ubuntu/+source/zram-config/+bug/1247496
linux kernel 3.2.0-55 generic is the one used. I would be very glad to
get a 3.2.0-55
Oibaf, as I referred in comment #22, the fix is upstream git commit:
75c7caf zram: allow request end to coincide with disksize
I've sent already a request for Ben to include it in its stable 3.2
kernel (http://thread.gmane.org/gmane.linux.kernel.stable/68703)
Melodie: The fix will be included
I will be looking forward to it. Thanks a lot!
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Title:
Buffer I/O error on device zram0, logical block 515067
To manage notifications about
I've uploaded the test kernels for i386, amd64 and PAE here:
http://people.canonical.com/~henrix/lp1246664/
There's a directory for each arch. Also, the top-level directory
contains the patch that has been applied on top of the 3.2.0-56.86
kernel.
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Applied the fix as per kernel-team@ version. Based on the upstream
commit ID this is fixed in saucy and later, marked so.
** Changed in: linux (Ubuntu)
Status: Triaged = Fix Committed
** Changed in: linux (Ubuntu)
Status: Fix Committed = Triaged
** Also affects: linux (Ubuntu
** Description changed:
+ SRU Justification:
+
+ Commit 12a7ad3 zram: avoid access beyond the zram device introduced a
+ regression where valid_io_request() checks if request end coincides with
+ disksize (end equals bound). It fails if we attempt to read beyond the
+ bound.
+
+ Impact:
+
+
@henrix You wrote about installing zram-config in the description. Is
it normal, that I didn't have the package installed, but the error still
occurred and zram0 was visible after 'swapon -s'?
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Is it normal, that I didn't have the package installed, but the error
still occurred and zram0 was visible after 'swapon -s'?
Hi, If you had it installed before then removed it happens, and is also filed
in a bug report:
zram-config runs even after uninstalled, needs purge -
@meets I talked about it in the previous thread (#1217189) and was told
by @danmbox to run dpkg --purge (but anyway I think that zram-config
wasn't installed before - however I'm not 100% sure), but it didn't
help...
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To damian-sawiicki: Do you see a zram-config.conf file under /etc/init ?
Another stupid question: did you precisely invoke dpkg --purge zram-
config ?
(When I realized I still had zram-config at work after uninstalling it,
I didn't think about dpkg --purge and just removed whatever zram
files I
Hi,
Why installing zram-config in the Ubuntu Builder Synaptic module there has been
this message:
E: zram-config: subprocess installed post-installation script returned error
exit status 1
In the current system itself all is working fine so far (more than one hour
running). No zram
Ok, after more than one hour and a half, with lots of heavy programs
started at same time no issue, no freeze on the P4.
On the T60 with the 3.2.0-55 generic and zram-config in use the session
was exiting really fast and sending the user back to the login screen.
With the 3.2.0-56 generic no
I dist-upgraded mu ubuntu 12.04 LTS this morning and after reboot I got:
[ 14.666280] zram: module is from the staging directory, the quality is
unknown, you have been warned.
[ 14.667040] zram: Creating 1 devices ...
[ 14.830355] Buffer I/O error on device zram0, logical block 62411
[
@henrix It works! Thank you very much. The error message used to appear
on every boot and now I rebooted 3x and it's ok (I checked dmesg each
time).
@oibaf Thanks for explanation, the installation was smooth and so far
everything is fine. Here it is different than in your case, because the
I was finally able to reproduce this bug myself on 3.2.0-55-powerpc-smp
, so I confirmed it. Note that the messages only happened for the first
time on the latest 10 boot or so (I did a dmesg | grep zram after
every boot).
@Damian: download the 3 files in a directory and do a
sudo dpkg -i
apport information
** Tags added: apport-collected running-unity staging
** Description changed:
This is a duplicate of #1217189, but for some reason neither @oibaf nor
me can reopen it. It is in fix released state, but the problem is at
most partially solved. It seems that the bug no
Thank of reporting this -- it looks like the fix for the Precise kernels
is actually missing.
I've uploaded a test kernel containing the fix (I've uploaded only a
-pae kernel since this seems to be what Damien is using, but I can
upload others if required). Basically this is a 3.2.0-56.86 kernel
** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
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Title:
Buffer I/O error on device zram0, logical block 515067
To manage
Could you explain, how to install it? When I click on any of those
packages, I end up in Ubuntu Software Center with an error message and
no install button. Are you sure they are fine?
** Attachment added: screenshot
** Description changed:
This is a duplicate of #1217189, but for some reason neither @oibaf nor
me can reopen it. It is in fix released state, but the problem is at
most partially solved. It seems that the bug no longer causes lockups
(described in another bug: #1215513), but is still
** Package changed: linux-lts-raring (Ubuntu) = ubuntu
** Package changed: ubuntu = linux (Ubuntu)
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Title:
Buffer I/O error on device zram0,
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