This bug was fixed in the package linux - 3.13.0-40.69
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linux (3.13.0-40.69) trusty; urgency=low
[ Luis Henriques ]
* Release Tracking Bug
- re-used previous tracking bug
[ Upstream Kernel Changes ]
* regmap: fix kernel hang on regmap_bulk_write with zero val_count.
No crash, but dmesg full with:
[ 105.544050] [ cut here ]
[ 105.544057] WARNING: CPU: 1 PID: 59 at
/build/buildd/linux-lts-trusty-3.13.0/fs/proc/generic.c:522
remove_proc_entry+0x16d/0x180()
[ 105.544059] remove_proc_entry: removing non-empty directory 'fs/nfsfs',
[ 105.544107] CPU: 1 PID: 59 Comm: kworker/u16:1 Tainted: G OX
3.13.0-39-generic #66~precise1-Ubuntu
^Note that the kernel version in proposed is 3.13.0-40. Released likely
by next Monday.
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Any eta on when this fix will hit trusty?
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https://bugs.launchpad.net/bugs/1376245
Title:
remove_proc_entry+0x139/0x1b0() -- name 'fs/nfsfs'
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uname -a
Linux amber 3.13.0-39-generic #66~precise1-Ubuntu SMP Wed Oct 29 09:56:49 UTC
2014 x86_64 x86_64 x86_64 GNU/Linux
In dmesg i see this message every time (but system is not crashes)
[56757.172197] [ cut here ]
[56757.17] WARNING: CPU: 1 PID: 12934 at
Also seeing this on Trusty, with kernel 3.13.0-39-generic.
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Title:
remove_proc_entry+0x139/0x1b0() -- name 'fs/nfsfs'
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An FYI - my system crashed again last night.
Since this is the host for the NFS system - and gets used extensively
for managing the DVR recordings - this system gets several large write
operations a night - and more reads as the programs are streamed to Roku
devices.
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System crashed again last night.
it appears this has been approved for promotion into next Trusty update.
Not able to obtain the timing of the next update for Trusty.
Is there a scheduled release date?
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Updated a 12.04 LTS box today with the kernel 3.13.0-39-generic
#66~precise1-Ubuntu SMP Wed Oct 29 09:56:49 UTC 2014 x86_64 x86_64
x86_64 GNU/Linux and problem still there.
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** Tags removed: verification-needed-trusty
** Tags added: verification-done-trusty
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Title:
remove_proc_entry+0x139/0x1b0() -- name 'fs/nfsfs'
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-
trusty' to 'verification-done-trusty'.
If verification is not done by 5 working days from
Just saw this report, may be related:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1383446
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Title:
remove_proc_entry+0x139/0x1b0() --
My system doesn't crash, but I get something similar (may be unrelated),
not sure, just found this bug report via Google. This is what I get:
Nov 10 13:41:58 quadrio kernel: [ 1324.267970] WARNING: CPU: 0 PID: 14440 at
/build/buildd/linux-3.13.0/fs/proc/generic.c:511
** Branch linked: lp:ubuntu/trusty-proposed/linux-keystone
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Title:
remove_proc_entry+0x139/0x1b0() -- name 'fs/nfsfs'
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** Branch linked: lp:ubuntu/precise-proposed/linux-lts-trusty
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Title:
remove_proc_entry+0x139/0x1b0() -- name 'fs/nfsfs'
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System crashed again last night due to this bug.
How can this issue be escalated and placed into the next Trusty release?
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Title:
Snippet from syslog.1
Last night:
=
Nov 2 23:10:06 ubuntu-1 kernel: [140230.568863] [ cut here
]
Nov 2 23:10:06 ubuntu-1 kernel: [140230.568877] WARNING: CPU: 1 PID: 11663 at
/build/buildd/linux-3.13.0/fs/proc/generic.c:511
System crashed again - soon after my last post.
Can we please get this fix promoted into the Trusty stream for release?
Thanks !
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Title:
After re-booting the system - 4 failures have already appeared in the
syslog within 20 minutes .
Running a handbrakecli process directly on the machine.
This really frustrating - having to deal with this - when the solution
exists - yet not promoted.
Please - Please push this fix into the
Note that I can reproduce the WARNING consistently with:
ip netns add test; ip netns delete test
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Title:
remove_proc_entry+0x139/0x1b0() --
When will this fix be released for trusty?
I am experiencing this situation about every 3rd day.
Have 3 Ubuntu systems tied together - with the system that crashes as
the NFS server - along with the primary MythTV service. The other 2
systems read/write to the file system as MythTV services and
I was getting this error regularly in my system log yesterday. Since
installing the kernel images from #18 I'm not seeing the error any more,
so it looks like that's the fix.
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** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Utopic)
Importance: Medium
Status: Confirmed
** Changed in: linux (Ubuntu Trusty)
Status: New = Fix Committed
** Changed in: linux (Ubuntu Trusty)
Assignee:
If it helps: The very first of those kernel stack traces has a slightly
different message:
[49237.227779] [ cut here ]
[49237.227787] WARNING: CPU: 2 PID: 24871 at
/build/buildd/linux-3.13.0/fs/proc/generic.c:522 remove_proc_entry+0x19f/0x1b0()
[49237.227789]
Although it should come sooner or later via stable, if people want to
test ahead of that I put kernel images with the anticipated fix at
http://people.canonical.com/~smb/lp1376245/
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There is an additional patch that hit 3.17 upstream recently. It is
marked for stable but had not enough time to come through:
commit 2f3169fb18f4643ac9a6a097a6a6c71f0b2cef75
Author: Fabian Frederick f...@skynet.be
Date: Wed Sep 24 18:56:11 2014 +0200
nfs: fix duplicate proc entries
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You can see several kernel panics here. Lots of them until massive down
and hangs.
** Attachment added: Kernel Panic and crash. Massive down.
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1376245/+attachment/4238894/+files/kernelpanic.dmesg
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I must add that I'm using kvm-qemu for virtualization. Maybe this also
triggers the bug. Just in case you need to know.
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Title:
Hi,
for me happening in Linux red-compute 3.13.0-37-generic #64-Ubuntu SMP
Mon Sep 22 21:28:38 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux.
It seems this has something related to openvswitch that seems to trigger
the error more often. But every bootup I have this on my log:
[ 437.773703]
Picked up these two panics from a few days ago in my logs so
unfortunately can't say what was happening at the time. Machine has
continued to be usable since. No NFS mounts but possibly related to NFS
exports on the box. I am running VMware Workstation on this box. Haven't
noticed it with older
We are seeing the same a dozen or so timers per day, and it happened
after we updated from the -36 to the -37 kernel build.
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Title:
We have this same problem. Just upgraded to -38 , no change:
[184207.109594] [ cut here ]
[184207.109604] WARNING: CPU: 15 PID: 10701 at
/build/buildd/linux-3.13.0/fs/proc/generic.c:511 remove_proc_entry+0x139/0x1b0()
[184207.109606] name 'fs/nfsfs'
[184207.109608]
Currently seeing this whenever I exit a Docker container on:
Linux jenkins-1 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC
2014 x86_64 x86_64 x86_64 GNU/Linux
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I can reproduce this regularly on two physical computers but I haven't
seen this at all on two virtual machines (vmware guests running ubuntu
server 14.04.01). All running kernel 3.13.0-37-generic (64bit)
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For me happens on 3.13.0-37-generic, not using docker but VirtualBox
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Title:
remove_proc_entry+0x139/0x1b0() -- name 'fs/nfsfs'
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Note: I don't have any NFS mounts. The stack trace is dumped despite
that.
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Title:
remove_proc_entry+0x139/0x1b0() -- name 'fs/nfsfs'
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I have the same trace in dmesg. I'm 99% positive it started happening
with the -37 kernel.
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Title:
remove_proc_entry+0x139/0x1b0() -- name
Did this issue just start happening with the -37 kernel? Did it also
happen with the -36 kernel?
** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
** Tags added: kernel-da-key
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May be related to the following commit:
commit 781ea515c9ef873359364957d111848963f661b6
Author: Eric W. Biederman ebied...@xmission.com
Date: Thu Jul 31 04:35:20 2014 -0700
NFS: Fix /proc/fs/nfsfs/servers and /proc/fs/nfsfs/volumes
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