You are right. This is NOT the same bug but stunningly happens with this kernel
while the "share + more actions" on firefox worked fine with the ubuntu kernel.
Here is the relevant entry in the syslog:
May 11 16:40:30 Murat-Laptop dbus-daemon[1834]: Activating service
name='org.gnome.GConf'
Murat, are you sure it's the same bug? I experienced a random freeze on
4.8.0-51-generic, but there was nothing in syslog and symptoms were
quite different. What's in your syslog?
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murat@Murat-Laptop:~$ uname -r
4.10.0-20-generic
murat@Murat-Laptop:~$ uname -a
Linux Murat-Laptop 4.10.0-20-generic #22+lp1674838v201705030839 SMP Wed May 3
13:41:02 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
I just booted into the kernel 4.10.0-20 by Seth Forshee and encountered this
bug within
@Seth Forshee,
Thanks again for your patch series and test kernel, which has resulted
in my system running stably for over a week now.
Although your patch series was ACK'd on the Ubuntu kernel mailing list,
I thought it worth mentioning that it doesn't yet appear to have been
applied to
If it helps at all in the calculus of determining when to release this
update, we've got a production RethinkDB cluster that was affected by
this bug under Zesty server. Installing the
http://people.canonical.com/~sforshee/lp1674838/ kernel set resolved the
issue for us, but I'd greatly prefer
Hope this fix lands soon, since without it, the 4.10 kernel is basically
unusable. Even for 16.04, this bug makes the hwe-edge series pretty much
unusable.
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> Hmm, a June 5 release date for this fix seems to be wait too late
> for the severity of this system freeze bug.
This is our normal SRU cycle. Out-of-cycle updates are for the most part
reserved for critical security issues.
> Not sure what regressions using 4.10.0-13 would entailed compared to
Not a comment on the slow patching schedule but while we're waiting for
a proper release, those who prefer to use a released kernel might want
to switch to 4.10.0-13-generic. Several people here (myself included)
haven't had a crash for days using it and there is strong suspicion (see
#104) that
ah, c'mon, how severe could this bug be? You, loosing hours of work
because your system freezes? Who cares? They have more important things
to care about - preparing for ipo and stuff. And don't forget to buy
canonical stocks as they out
canonical you really should mark 17.04 as testing and not
I agree that this should be released much faster. For instance, one bug
I found in btrfs-progs that was fixed in less that a week after 2 weeks
from reporting was fixed in Ubuntu, while bug only affected small subset
of btrfs users with additional features and didn't actually corrupt or
hang
Hmm, a June 5 release date for this fix seems to be wait too late for
the severity of this system freeze bug. A large number of people who run
Ubuntu now (either long-time users or newcomers testing the desktop
platform) has his/her computer crash every hour or so. On that basis,
shouldn't
On Wed, May 10, 2017 at 02:19:26PM -, Vidar Braut Haarr wrote:
> Will it be included in the next artful kernel, or only zesty? I ask
> because the email subject says "[PATCH 0/4][Zesty SRU]".
>
> And when will it be, roughly? 2 weeks? 3 months? Tomorrow?
Currently artful is using the same
Will it be included in the next artful kernel, or only zesty? I ask
because the email subject says "[PATCH 0/4][Zesty SRU]".
And when will it be, roughly? 2 weeks? 3 months? Tomorrow?
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@tasman: it's already slated for inclusion into one of the next kernel
packages: https://lists.ubuntu.com/archives/kernel-
team/2017-May/083976.html
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I'm seeing stable behavior with @Seth Forshee's kernel:
$ uname -a
Linux titanic 4.10.0-20-generic #22+lp1674838v201705030839 SMP Wed May 3
13:41:02 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
$ uptime
14:41:08 up 4 days, 2 min, 1 user, load average: 0.12, 0.25, 0.13
What is the next step in
edwin-v was testing an older test kernel from jsalisbury, not the newer
one from sforshee
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Title:
kernel BUG at /build/linux-
Oh, it's sad to hear that. At least I'm not getting them so often.
Thanks for letting me know.
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Title:
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Emilio, Edwin mentioned above that lp1674838 is still susceptible to
this bug.
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@Joseph Salisbury Your changes fixed the problem:
http://people.canonical.com/~sforshee/lp1674838
I was not able to use the computer for more than 10 minutes before that, and
it's been working OK for a few hours now. I can't wait for the official release.
Thank you
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I have been running "4.10.0-20-generic #22~lp1674838" since 28 April and
today it finally gave me the swapops error again. This illustrates the
need for using the reproducible test cases.
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Occurred again to me with Linux 4.10.0-20-generic #22-Ubuntu.
I attached some logs.
** Attachment added: "linux-4.10.0-20-swapops-slabtop-logs.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1674838/+attachment/4873407/+files/linux-4.10.0-20-swapops-slabtop-logs.txt
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Yes, I think the conclusion is that those are secondary effects of the
bug. Fingers crossed that the actual fix has been found and will appear
in an official release soon...
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Many people experience `NMI watchdog: BUG: soft lockup - CPU#$XXX stuck
for $YYYs!`:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1677491
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1673057
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1671753
This happened to me just now; computer randomly froze and I had to do a
hard reboot. Later found out what happened by digging through syslog.
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Related bugs:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1683091
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1688643
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1687731
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1684080
no more problems since i installed version 4.10.0-20-generic
(sforshee@gloin) #22+lp1674838v201705030839 two days ago while the
regular 4.10.0-20-generic crashed within minutes after some heavy
virtualbox/firefox induced memory usage. xenial, 16.04.2
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In opposit to Kernel 4.8x this 4.10 is very unstable.
I have this problem too. I am using 4.10.0-20-generic.
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Title:
kernel BUG at
Sounds like this have been narrowed down to changes more recent than
this, but I have tried 4.10.0-13. So far it is stable.
$ uname -a
Linux gooseberry 4.10.0-13-generic #15-Ubuntu SMP Thu Mar 9 20:28:34 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux
$ uptime
22:59:30 up 3 days, 1:30, 1 user, load
Good news. I have no crashes in 2 days with
http://people.canonical.com/~sforshee/lp1674838.
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Title:
kernel BUG at /build/linux-
I've also been suffering from this issue. The kernel here
(http://people.canonical.com/~sforshee/lp1674838/) appears to have dealt
with the system hang, happily viewing videos on Firefox now.
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4.10.0-20-generic #22+lp1674838v201705030839
fry:~$ uptime
11:27:04 up 16:20, 2 users, load average: 13.48, 14.59, 16.62
No crash, previous crashes would appear within an hour with lighter load
and memory pressure. Seth's thesis on the back port seems to be
correct.
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No crash after more than 23 hours uptime with 4.10.0-20-generic
#22+lp1674838v201705030839.
With the normal ubuntu 4.10 the system crashes every few hours. So I can
confirm the bug is probably fixed in the kernel from ~sforshee
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After running under the usual high load for 4 hours the previously
caused a hang after 1 hour, the issue hasn't popped up yet using
4.10.0-20-generic #22+lp1674838v201705030839
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Sorry, was out for a few days.
Just catching up, I'm running the kernel from
http://people.canonical.com/~sforshee/lp1674838/
The box I'm testing will has been hitting the panic in less than hour
from its high workload since updating to 17.04 will update yes or no.
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I've been experiencing same kind of freeze / lookup with kernel 4.10.0, from
packages
linux-image-4.10.0-19-generic
linux-image-4.10.0-20-lowlatency
linux-image-4.10.0-20-generic
I use Ubuntu at home and at my work and I experienced in both after upgrading
to 17.04.
I kept only 4.8 version
I'm testing 4.10.0-20-generic #22+lp1674838v201705030839 right now. But
not enough time has passed to draw any conclusions. I will report back
tomorrow or so.
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Thanks Seth, this successfully fixes a reproducer that was able to
trigger this bug for me.
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Title:
kernel BUG at /build/linux-
I'm now able to produce this pretty reliably with 4.10.0-20.22. My
testing shows that the "POWER9: Additional power9 patches" patches are
responsible, two of them in particular:
- mm: introduce page_vma_mapped_walk()
- mm, ksm: convert write_protect_page() to use page_vma_mapped_walk()
These
OK, I will install 4.10.0-13. Are these the correct ones:
linux-headers-4.10.0-13_4.10.0-13.15_all.deb
linux-headers-4.10.0-13-generic_4.10.0-13.15_amd64.deb
linux-image-4.10.0-13-generic_4.10.0-13.15_amd64.deb
linux-image-extra-4.10.0-13-generic_4.10.0-13.15_amd64.deb
I can also confirm the Ubuntu build of 4.10.0-8 does not have the bug.
$ uname -a
Linux gooseberry 4.10.0-8-generic #10-Ubuntu SMP Mon Feb 13 14:04:59 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux
$ uptime
21:14:04 up 6 days, 2 min, 1 user, load average: 0.79, 0.62, 0.43
I was crashing daily on
For the sake of time, if 4.4.0-12 is good, here are the -13 and -14
links which are the suspected last good and first bad kernels:
4.4.0-13:
https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa/+build/12106252
and
4.4.0-14:
@Patrick Salisbury,
As a P.S., If you are able to confirm that Ubuntu 4.10.0-14 is the first
version affected, that would be consistent with a hypothesis that the
patch series associated with: http://bugs.launchpad.net/bugs/1671613 may
be a factor in the regression:
* POWER9: Additional power9
Thanks for the update. It might be best to next start testing 4.10.0-12 then:
https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa/+build/11837051
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@Patrick Salisbury,
Hi. I have yet to experience the BUG with 4.10.0-8:
$ uname -a
Linux titanic 4.10.0-8-generic #10-Ubuntu SMP Mon Feb 13 14:04:59 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux
$ uptime
17:54:47 up 6 days, 2:57, 1 user, load average: 0.24, 0.45, 0.61
I had run this kernel for
Thanks, Patrik. We should test older kernels then. -8 was requested in
the past, but it would be good to confirm those results:
https://launchpad.net/~canonical-kernel-
team/+archive/ubuntu/ppa/+build/12001523
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I've had 4.10.0-14 crash before.
[1217206.617030] [ cut here ]
[1217206.617055] kernel BUG at
/build/linux-7LGLH_/linux-4.10.0/include/linux/swapops.h:129!
[1217206.617077] invalid opcode: [#1] SMP
[1217206.617089] Modules linked in: macvtap macvlan ufs qnx4 hfsplus
Hi, I'm having the same randome freezes using kernel 4.10.0-20.22 (trace
follows).
I'm running Linux without swap space, if that's relevant information.
It mostly happens when I'm listening to music / YT using chromium or
amarok while doing something else. The computer starts heating, venting,
@Mitchell Tasman, Thanks for the feedback. I think we now know for
sure that this bug does not happen with the upstream 4.10 or 4.11
kernels. Any commits that are in upstream 4.10 are also in the Ubuntu
Zesty kernel. The Ubuntu 4.10.0-21 kernel I requested in comment #88
had all the upstream
@Joseph Salisbury,
Hi.
It looks as if the Ubuntu kernel source has diverged from stable in a
significant way. In particular,
as has already been noted, on 3/10/2017, Canonical cherry-picked several
patches from 4.11-pre, apparently relating to:
http://bugs.launchpad.net/bugs/1671613
Will try the mainline kernel 4.10.12 With the load failure usually <45
minutes. Will let you know. Thanks!
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kernel BUG at
@David, maybe test 4.10.12 while I review that build failure:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.10.12/
Others have reported this bug is fixed in mainline, so I was just
curious if the fix was also cc'd to upstream stable.
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@Joseph Salisbury, the 4.10.0-21 kernel crapped out on me but with a
different error:
May 1 18:42:25 vancouver kernel: [28120.190864] BUG: unable to handle kernel
NULL pointer dereference at 0021
May 1 18:42:25 vancouver kernel: [28120.190895] IP:
dma_fence_wait_timeout+0x36/0xf0
Looks like those builds are failing.
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Title:
kernel BUG at /build/linux-
7LGLH_/linux-4.10.0/include/linux/swapops.h:129
Status
@David Bierce, can you give the 4.10.13 kernel a test? It is available
from:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.10.13/
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Using Joseph's kernel, I'm still running into the same issue.
** Attachment added: "dmesg.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1674838/+attachment/4870532/+files/dmesg.txt
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FYI, I switched to the mainline build of 4.10.11 and did *not*
experience this issue. Today I tried to switch back to linux-
image-4.10.0-20-generic (4.10.0-20.22) to see if it had been fixed, and
hit the bug again within a few minutes. Trying out jsalisbury's -21
build now.
Running the
@Joseph Salisbury, I'm running the 4.10.0-21 kernel now. Let's see what
happens.
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Can folks affected by this bug test the 4.10.0-21 kernel? It can be
downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1674838/
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It seems I can reproduce this bug now. I'm in the process of "Reverse"
bisecting now, which will identify the commit(s) in mainline that fix
this and are needed in Zesty.
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I also had a crash with the #22~lp1674838 kernel. This happend after 2-3
days, over night when the machine was supposedly mainly idle.
** Attachment added: "syslog.bug2"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1674838/+attachment/4870237/+files/syslog.bug2
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So, I have been getting hit with this every day or so on my rather old
HP Pavilion desktop. I thought I might be getting hit with this problem
because the desktop was a few years old.
But now I just got hit with it on a new Dell Inspiron laptop which I
bought this year. Same error in my
Same here. Interesting is that I can run games for hours at high
cpu/gpu/memory load without problems, yet I can sometimes lock firefox
in a couple of minutes.
I had a quick look at the commit and it fixed a problem in a file that
was not introduced until 4.11rc1. Looks like the kernel team has
I confirm you it works with this kernel. I went into terrible situations
for system, but it survived. However, what I find strange is that I
don't have swap on the disk, and still when I reach maximum memory,
system write A LOT on the disk while lagging.
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@Joseph Salisbury;
Touchwood, using your test kernel, I have been running for 2 days, 20
hours without a problem. (havent shutdown once in that time) Been using
firefox and thunderbird the whole time. The stock kernels wouldn't run
for me for more than an hour or two. I see other people still
@kiney
Thanks for the tip. I installed 4.11.0rc8, will try this one.
I will keep you informed if I encounter the crash again.
Ox
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>If I can help you in any way please ask, this bug force me to use
screens everywhere and I want my scrolling back.
as a workaround you can just run the mainline kernel.
I'm running 4.11.0rc7 mainline and my uptime is 9 days now. With the ubuntu
kernel i had crashes every few hours.
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Hello,
I encounter the bug also. It appends nearly once a day.
Full trace is at:
https://ubuntuforums.org/showthread.php?t=2358975=2=13638621#post13638621
I tested a configuration without and with a swap, it occurs in both cases.
Also, I nearly always had the bug when using Firefox (but also
BTW for those who encounter this issue (as I've just had the pleasure
today), it might be useful to reboot your box using the "magic SysRq"
sequence since it's supposed to be more gentle than the power key:
https://en.wikipedia.org/wiki/Magic_SysRq_key
In order to enable this feature, I have this
I will attempt to reproduce the bug. If I can, I'll bisect down to the
commit that introduced this regression.
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Title:
kernel BUG
Bad news. Just had the kernel crash while using #22~lp1674838
I am attaching a kern.log file that shows this morning I woke from
suspend, suspended again, work up again, and then had a freeze. Very
surprising to me is that while the machine was locked to outside (cursor
moved, but no key board
@Joseph,
Hi again. FYI, the bug never triggered when I tried your suggestion
from #24 to test the following early Zesty kernel:
https://launchpad.net/~canonical-kernel-
team/+archive/ubuntu/ppa/+build/12001523
But as noted in my previous comment, the BUG did alas trigger in my
environment
Joseph,
Hi. I have been running with your test kernel:
$ uname -a
Linux titanic 4.10.0-20-generic #22~lp1674838 SMP Mon Apr 24 18:50:06 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux
Unfortunately, it appears that this kernel is still subject to the BUG.
Please see the attached dmesg snippet.
**
@Daniel, can you try testing the kernel posted in comment #55? The
uname output should have the bug number in it:
4.10.0-20-generic #22~lp1674838
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https://kopy.io/g2GjC
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Title:
kernel BUG at /build/linux-
7LGLH_/linux-4.10.0/include/linux/swapops.h:129
Status in linux
daniel@XPS-13:~$ uname -r
4.10.0-20-generic
My computer just froze with this kernel. This issue is _not_ fixed in
this kernel.
As you can see I run a Dell XPS-13 with the Intel network card if that
information helps..? Like others say it freezes randomly or on heavy
load for a longer period of
Commit d75450ff40df0199bf13dfb1 is not in any Ubuntu kernel as of yet.
It sounds like this commit fixes the issue. If possible please test
with that kernel a little longer to confirm it resolves the bug. If it
does, I'll submit an SRU request to include that commit in all affected
releases.
To @jsalisbury
So far so good! 28 hours with
http://kernel.ubuntu.com/~jsalisbury/lp1674838.
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4.10.0-20-generic #22~lp1674838 seems to work fine for me as well so
far.
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Title:
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@Joseph Salisbury;
I have been testing your kernel all night and not a single problem has
occurred. Before this, I couldn't run for two hours without a lock up.
So far my uptime on this kernel is 15 hours 30 minutes. With a problem
like this its difficult to say categorically "its fixed" but it
I've also just now experience this error when starting a video in Firefox
(right after the ad started to display, the whole desktop froze, only the mouse
could be moved. No ALT+F1 combo etc).
However, I could log in via ssh.
The hard drive LED stood on for a good while after the freeze occurred.
I'm seeing the same bug with the current kernel "4.10.0-20-generic
#22-Ubuntu". I've attached a dmesg output in case this might be helpful.
** Attachment added: "dmesg.out"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1674838/+attachment/4867877/+files/dmesg.out
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So, I think the issue occurs because of the pte_lockptr lock being used
on a PMD and is incontention with the lock on the same PMD. There are
several possible points where this can happen, for example, pages being
migrated on NUMA systems (unlikely in most of these bug reports) or even
mremap()
@Joseph Salisbury,
I've had the 4.10.0-20.22~lp1674838 kernel running overnight with stress
and dmesg running in a loop and Firefox open to my gmail account, and no
problems (neither evident nor in dmesg output).
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To @pauljohn.
I've been running the 4.10.0-20-generic #22~lp1674838 kernel you linked
to in post #58 for 6 hours at work today. No crash so far.
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As an additional information: this issue is primarily triggered by
Firefox when running GPU-related workloads, in my case either video
playback or live SVG charts on stock exchange. When those are not used
issue either doesn't happen at all or very rarely, not even every day.
Video playback and
I was hitting the bug with "4.10.0-19-generic #21-Ubuntu". With a
standard apt-get update and upgrade (no special kernel install) I am now
on "4.10.0-20-generic #22-Ubuntu".
Got hit with the same bug on this new kernel. So the most recent
general kernel update did not fix anything for me.
@Joseph Salisbury;
Just getting ready to try out your kernel test. During the dpkg -i
there were some messages I did not care for, for instance:
dpkg: warning: downgrading linux-headers-4.10.0-20 from 4.10.0-20.22 to
4.10.0-20.22~lp1674838
and
Not updating initrd symbolic links since we are
To @jsalisbury.
Ubuntu updates just uploaded 4.10.0.20.22. Can you guess if that has
fixes similar to ones you offer in
http://kernel.ubuntu.com/~jsalisbury/lp1674838?
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I have this as well. For me, this is always correlated with having
Thunderbird or Firefox open.
Sometimes, I also see messages like this
NMI watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
Can you say if these are superficial or not?
In my kernel log, the freeze happened Apr 22 13:41:51
Fabian: I've had my eye on ace71a19cec5 too, though I haven't seen the
stack trace from that commit in any of the reports. However I'm very
suspicious that "mm: introduce page_vma_mapped_walk()" or a related
commit is to blame here, as it looks like the problem is related to huge
pages and page
I built a Yakkety test kernel with a pick of commit
d75450ff40df0199bf13dfb19f435519ff947138 as suggested in comment #52.
The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1674838/
Can those affected by this bug test this kernel?
Thanks in advance!
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Also affects linux-hwe-edge per #1685833
** Also affects: linux-hwe-edge (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-hwe-edge (Ubuntu)
Status: New => In Progress
** Changed in: linux-hwe-edge (Ubuntu Zesty)
Status: New => In Progress
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Hi there.
I have encountered the same issue as Dennis Sheil in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1674838/comments/18
post.
The same way, was using firefox which in turn became unresponsive.
The difference is that I am running firefox v53.0 in docker
(v17.04.0-ce) using
the only big mm changes pulled in from 4.11.x that I could find with a
quick look through the history are related to KSM, but those are missing
a later fixup (from 4.11.x as well):
d75450ff40df0199bf13dfb19f435519ff947138 which fixes ace71a19cec5 ("mm:
introduce page_vma_mapped_walk()")
same issue here!
Thunderbird freeze and after few seconds, system freeze
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https://bugs.launchpad.net/bugs/1674838
Title:
kernel BUG at /build/linux-
+1, experiencing this since I've upgraded from 16.10 to 17.04, every few
hours the system freezes. Really annoying ...
kernel: [ 4075.895491] kernel BUG at
/build/linux-Fk60NP/linux-4.10.0/include/linux/swapops.h:129!
kernel: [ 4075.895523] invalid opcode: [#2] SMP
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I'm having the same error. I upgraded from 16.04 -> 16.10 -> 17.04 on
the same day and now my computer freezes during night. There's no reply
from the dhcpd running on the computer anymore, and the screen shows the
background but no login window appears. I can't ping the computer,
though AltSysRq
@Ken Haase congratulations, you are a kernel-testing machine and I
gladly stand in your shadow!
Your experience jibes with mine but I feel less certain since I have a
hard time provoking evidence in syslog.
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Thanks @Chris Hermansen. As @Joseph Salisbury suggested, I tried
4.9.0-16, 4.10.0-8, 4.10.0-11, and 4.10.0-19 and the problem doesn't
crop up until 4.10.0-19 and then does so reliably (so to speak).
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Okay, so MIGRATION is indeed enabled on the mainline kernel too and that
possibility has been ruled out - So we're not chasing ghosts. :)
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