[Bug 1782716] Re: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout

[Paul Graydon]

Seeing the same on Ubuntu 18.04.3 with the HWE kernel, 5.0.0-25-generic

AMD A6-9225 RADEON R4

This appears to be tied in to the problems resuming the laptop from
suspended (black screen, flashing cursor)

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  [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout

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[Bug 1790652] Re: Oracle cosmic image does not find broadcom network device in Shape VMStandard2.1

[Paul Graydon]

I'm confused.  Do you need verification or not?  Cosmic is not
specifically supported on our platform, and there are no plans at the
moment to support non-LTS releases that I know of.  I can certainly test
this if needs be, though.

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Title:
  Oracle cosmic image does not find broadcom network device in Shape
  VMStandard2.1

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[Bug 1801475] [NEW] trace-summary appears to need a dependency on python-subnettree

[Paul Graydon]

Public bug reported:

See upstream bug, a new version has been released which fixes this error:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=858583

Current version of trace-summary in Bionic is 0.84-1. Upstream released
0.84-2 in July with the appropriate fix.  Pulling in the update from
upstream should presumably fix this.

** Affects: trace-summary (Ubuntu)
 Importance: Undecided
 Status: New

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  trace-summary appears to need a dependency on python-subnettree

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[Bug 1788681] Re: changed exit code for 'dc' in Ubuntu Bionic

[Paul Graydon]

Fix has only been released for Cosmic.  Given the package is basically
non-functional on Bionic, is there a plan to backport the fix?  There
doesn't seem much point in keeping it in the repository otherwise.

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  changed exit code for 'dc' in Ubuntu Bionic

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[Bug 1790652] Re: Oracle cosmic image does not find broadcom network device in Shape VMStandard2.1

[Paul Graydon]

Patch submitted to netdev: https://marc.info/?l=linux-
netdev=153695411427176=2

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  Oracle cosmic image does not find broadcom network device in Shape
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[Bug 1790652] Re: Oracle cosmic image does not find broadcom network device in Shape VMStandard2.1

[Paul Graydon]

I've been able to replicate the situation with a few different
distributions.  It seems to only occur with VMs.  When I tried 4.18.7 on
a bare metal instance, there was no problem.

We believe we've isolated the kernel commit that is introducing the
problem to 707e7e96602675beb5e09bb994195663da6eb56d

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[Bug 1790652] Re: Oracle cosmic image does not find broadcom network device in Shape VMStandard2.1

[Paul Graydon]

I haven't specifically seen that one, but I'll check in with both the
Oracle Linux team and our Hypervisor team.

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[Bug 1734395] [NEW] mkfs.ext4dev unrecognised file system

[Paul Graydon]

Public bug reported:

This is probably a bit of a daft one, and it's not blocking me on
anything, but I see this more as a UX bug.

mkfs.ext4dev creates a file system that mount then can't mount, unless
it is told explicitly that it is ext4.

(on a side note, what is ext4dev?  Can't seem to find a solid answer)


$ sudo mkfs.ext4dev /dev/sdb
mke2fs 1.42.13 (17-May-2015)
/dev/sdb contains a ext4 file system
last mounted on Fri Nov 24 22:40:41 2017
Proceed anyway? (y,n) y
Creating filesystem with 268435456 4k blocks and 67108864 inodes
Filesystem UUID: d5dcc961-f34e-4f59-b0f5-f58ea75dc817
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 2048, 23887872, 71663616, 78675968,
10240, 214990848

Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done

$ sudo mount /dev/sdb mount
mount: unknown filesystem type 'ext4dev'

$ sudo mount -t ext4 mount
$
/dev/sdb on /home/ubuntu/mount type ext4 (rw,relatime,data=ordered)


doing a normal mkfs.ext4 works perfectly fine, as you'd expect.

Version: Ubuntu 16.04
Package: e2fsprogs 1.42.13-1ubuntu1

** Affects: e2fsprogs (Ubuntu)
 Importance: Undecided
 Status: New

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

That would be a different bug, unfortunately.

Mine was specifically down to ipconfig not handling multiple network
interfaces correctly, triaged and successfully fixed by Canonical, and
exhaustively validated in our infrastructure.

Roughly speaking, it would quickly loop through the interfaces sending
out DHCP requests, and then listen on all for the responses, but it was
only able to track the request for one interface, which was whatever the
last interface it sent the request out of.  There's a session id
associated with it, and if that didn't match it would drop the packets.

Booting became dependent on the order of network interfaces returned by
the kernel, something that isn't guaranteed in any way, and explains why
it was working with some kernels and not with others, as it would only
work if the one interface that got DHCP responses was the last one
returned by the kernel.

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  initrd dhcp fails / ignores valid response

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

Note: I've also discovered (unsurprisingly, I guess?) that I see the
exact same behaviour on Ubuntu 14.04.  Can this fix be backported?

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  initrd dhcp fails / ignores valid response

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I've tested and confirmed that this solves the issue on 16.04

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

Given this is a fundamental bug in klibc, is there a plan to try to
upstream this patch?

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I took a step back from doing bisecting and focussed on creating a
replication scenario, which I've done successfully.

ipconfig is struggling to handle things when two interfaces are present
and sending out DHCP requests, even if one interface doesn't get a
response.

Here's what I've done:

Using virt-manager I created a bridge, bridge1, with no IP range
associated with it (I want dnsmasq on a host to handle IP).  I created a
second, bridge2, likewise with no IP range associated with it ready for
later use.

$$$

I created an instance, named primary, with two NICs, one doing the usual
NAT stuff so it has internet access.  One hooked up to bridge1.  I gave
it two storage devices, 1 (sda) at 15Gb in size to act as local storage,
1 (sdb) 40Gb in size to be hosted over iSCSI (in hindsight, no reason
for it not to be 15Gb too).

Install Ubuntu 16.04.1 LTS on the primary instance, pretty much
following through with defaults, but leaving the second hard drive
unused.  Reboot and bring up the instance.  In my case I end up with
ens3 being the NATing interface, ens9 being hooked up to the bridge
interface.

##

sudo apt update
sudo apt upgrade

##

Add to /etc/network/interfaces:

auto ens9
iface ens9 inet static
  address 192.168.0.1/24

##

Then:

sudo apt install open-iscsi targetcli dnsmasq

##

dnsmasq config:

log-queries
log-dhcp
interface=ens9
dhcp-range=192.168.0.50,192.168.0.150,12h
dhcp-boot=script.ipxe
enable-tftp
tftp-root=/tftpd
tftp-no-fail

##

Then run targetcli and do the following commands:

backstores/iblock create uefi /dev/sdb
/iscsi create iqn.2015-02.oracle.boot:uefi
cd iqn.2015-02.oracle.boot:uefi/tpg1
luns/ create /backstores/block/uefi
portals/ create 0.0.0.0
set attribute authentication=0 demo_mode_write_protect=0 generate_node_acls=1 
cache_dynamic_acls=1
exit

##

sudo mkdir /tftpd
sudo chown dnsmasq: /tftpd

##

/tftpd/script.ipxe:

#!ipxe
set initiator-iqn iqn.2015-02.oracle.boot:uefi
sanboot iscsi:192.168.0.1iqn.2015-02.oracle.boot:uefi

##

This gets the host pretty much ready to be an iscsi target for a host.
The host has been patched etc, so reboot.

You may want to set up ip forwarding etc on this instance.


$$$

Second host:

No storage.  Attach Ubuntu 16.04.1 LTS iso to the instance to boot from
initially.  Two NICs, first attached to bridge1.  Second attached to
bridge2.

Go through the installation procedure, logging in to the iscsi endpoint
on 192.168.0.1, using the details above (no username/password necessary
with this configuration) and install to the iSCSI target.  At the end,
detach the CD-ROM and ensure everything is set up to network boot.

On start-up you should see it network boot happily, everything is
awesome.  Do a "sudo apt update" and "sudo apt upgrade".  Then reboot.

On start-up you should see the bug happening.  ipconfig is sending out
DHCP requests on both interfaces and failing to accept any responses it
is being sent ("journalctl -xef -u dnsmasq" on primary shows it is
sending them).  If you remove that second NIC, you'll see that the
instance is able to boot happily.

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  initrd dhcp fails / ignores valid response

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I'm continuing to bisect the mainline linux kernel, and also trying to
see if I can create a straightforward reproducible example.

First focus on bisecting was between 4.5 and 4.6, to figure out what
changed to suddenly have ipconfig working.  I've tracked it down to this
using bisect, and validated it afterwards:

commit 689de1d6ca95b3b5bd8ee446863bf81a4883ea25
Author: Linus Torvalds 
Date:   Mon May 2 12:46:42 2016 -0700

Minimal fix-up of bad hashing behavior of hash_64()

This is a fairly minimal fixup to the horribly bad behavior of hash_64()
with certain input patterns.

In particular, because the multiplicative value used for the 64-bit hash
was intentionally bit-sparse (so that the multiply could be done with
shifts and adds on architectures without hardware multipliers), some
bits did not get spread out very much.  In particular, certain fairly
common bit ranges in the input (roughly bits 12-20: commonly with the
most information in them when you hash things like byte offsets in files
or memory that have block factors that mean that the low bits are often
zero) would not necessarily show up much in the result.

There's a bigger patch-series brewing to fix up things more completely,
but this is the fairly minimal fix for the 64-bit hashing problem.  It
simply picks a much better constant multiplier, spreading the bits out a
lot better.

NOTE! For 32-bit architectures, the bad old hash_64() remains the same
for now, since 64-bit multiplies are expensive.  The bigger hashing
cleanup will replace the 32-bit case with something better.

The new constants were picked by George Spelvin who wrote that bigger
cleanup series.  I just picked out the constants and part of the comment
from that series.

Cc: sta...@vger.kernel.org
Cc: George Spelvin 
Cc: Thomas Gleixner 
Signed-off-by: Linus Torvalds 


Next up is tracking down what changed between 4.7 and 4.8.

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I've tried every version in the v4 series, and a few in v3.  None prior
to (and including) v4.0.0 will boot, none output anything on the screen
to give me a clue why they're not booting.

So far:

v4.0 = won't boot
v4.1 = ipconfig bug
v4.2 = ipconfig bug
v4.3 = ipconfig bug
v4.4 = ipconfig bug
v4.5 = ipconfig bug
v4.6 = Boots
v4.7 = Boots
v4.8 = ipconfig bug
v4.9 = ipconfig bug
v4.10 = ipconfig bug


I'm getting seriously concerned that "working" is actually the aberration.  
It's working in just two out of ten releases.

I do have two things I should probably bisect there:  1) what changed
between 4.5 and 4.6, and 2) what changed between 4.7 and 4.8.

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

The more I look at this, the more I'm convinced *most* of the real
problem lies in that ipconfig tool.  Yes, various kernel changes seem to
make it alter between working & not working under the circumstances
(which is bizarre), but unless something is specifically interfering
with the inter-process communication, ipconfig appears to be ignoring
valid dhcp responses, just based on whether you tell it "all" interfaces
vs telling it a specific interface.

A small modification could be made to the initramfs-tools to have it
iterate over the interfaces in the system one-at-a-time.  It would
marginally slow down the boot should the relevant interface not be the
first, but it would get rid of this bug entirely.  Or the intird
environment could be modified to use dhclient instead of ipconfig
(dhclient appears to be in the initrd, and works perfectly fine when
called in a generic fashion, though the other initramfs-tools scripts
seem aware ipconfig didn't complete successfully which I haven't looked
in to)

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

My apologies for any lack of clarity.

I tested against the head of ubuntu-xenial, reverting just that commit
and it fixed it.

I tested against the head of the mainstream kernel and it didn't (last
night I tried 4.9, 4.8, 4.5, 4.4, 4.2 tags of the mainstream kernel and
in every place I find the general bug in effect).  I'll try some larger
leaps and see if I can track it down elsewhere.

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I tried reverting that specific commit from upstream, but that didn't
resolve the issue.  Time for a new round of bisecting the kernel, this
time using mainline.

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

This seems to make no sense to me, as a layman anyway.

I checked out the 4.4.0-58.79 tag, reverted that one commit and
confirmed I have a booting 4.4.0-58-generic that'll happily DHCP in the
initrd environment on multiple boots.  It really does seem like,
somehow, that commit is the source of the problems.

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I bisected again, and again it came back to that mount point change.
This seems so bizarre.

$ git bisect log
# bad: [6d4f0a79e5a307b6fd3ee3cc5bbb2fcb701b09db] UBUNTU: Ubuntu-4.4.0-57.78
# good: [db5f146d309e70067dae57798c9ea679af835aa7] UBUNTU: Ubuntu-4.4.0-53.74
git bisect start 'Ubuntu-4.4.0-57.78' 'Ubuntu-4.4.0-53.74'
# bad: [02bf412367b827aa5be05a315088ef5fdcf267ca] dmaengine: at_xdmac: fix 
spurious flag status for mem2mem transfers
git bisect bad 02bf412367b827aa5be05a315088ef5fdcf267ca
# bad: [1e089050b800ba7d6ba1bf5814827e6cca301ad5] smc91x: avoid self-comparison 
warning
git bisect bad 1e089050b800ba7d6ba1bf5814827e6cca301ad5
# bad: [d7632bdaba3dd143eac3c80bb7e2b0f62259583d] xhci: use default 
USB_RESUME_TIMEOUT when resuming ports.
git bisect bad d7632bdaba3dd143eac3c80bb7e2b0f62259583d
# bad: [7942010de9a2fe39e72b84e628867f4ff29a70f2] libxfs: clean up 
_calc_dquots_per_chunk
git bisect bad 7942010de9a2fe39e72b84e628867f4ff29a70f2
# good: [9d2524b0bdeb57f80d0279f6695a833606ad0597] UBUNTU: SAUCE: Bluetooth: 
decrease refcount after use
git bisect good 9d2524b0bdeb57f80d0279f6695a833606ad0597
# bad: [fd4b5fa6e3487d15ede746f92601af008b2abbc0] mnt: Add a per mount 
namespace limit on the number of mounts
git bisect bad fd4b5fa6e3487d15ede746f92601af008b2abbc0
# good: [f2109fe47ceb77647ef7d4f545efeba43d06fb64] videobuf2-v4l2: Verify 
planes array in buffer dequeueing
git bisect good f2109fe47ceb77647ef7d4f545efeba43d06fb64
# good: [d5d9494d2092a7e571dee635ca254075912355c1] thinkpad_acpi: Add support 
for HKEY version 0x200
git bisect good d5d9494d2092a7e571dee635ca254075912355c1
# first bad commit: [fd4b5fa6e3487d15ede746f92601af008b2abbc0] mnt: Add a per 
mount namespace limit on the number of mounts

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I see where I messed up.. I'll try the bisect again.

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

Okay... I can't help but think I made a mistake somewhere in the
bisecting process, but it seems to have isolated
fd4b5fa6e3487d15ede746f92601af008b2abbc0 as the bad commit


$ git bisect log
# bad: [6d4f0a79e5a307b6fd3ee3cc5bbb2fcb701b09db] UBUNTU: Ubuntu-4.4.0-57.78
# good: [40a98f0e91bcc062babd017732cbf7cb20cf39fd] UBUNTU: Ubuntu-4.4.0-51.72
git bisect start 'Ubuntu-4.4.0-57.78' 'Ubuntu-4.4.0-51.72'
# bad: [cd29d2303e86529c089b1c292480c05e7a24bd16] drm/i915: Respect 
alternate_ddc_pin for all DDI ports
git bisect bad cd29d2303e86529c089b1c292480c05e7a24bd16
# bad: [617dec606ff9e43e64a06daef83e17da0035340a] drm/exynos: fix error 
handling in exynos_drm_subdrv_open
git bisect bad 617dec606ff9e43e64a06daef83e17da0035340a
# bad: [0dbd2050197ea4dd59f8957b72981cb7d2cfab1c] usb: gadget: function: 
u_ether: don't starve tx request queue
git bisect bad 0dbd2050197ea4dd59f8957b72981cb7d2cfab1c
# bad: [f3f9de1bd9a63b633946226ba23392ad44e2badf] i2c: core: fix NULL pointer 
dereference under race condition
git bisect bad f3f9de1bd9a63b633946226ba23392ad44e2badf
# good: [a0678a6643bf688bccce3c298a4a110af10988fc] ipv6: correctly add local 
routes when lo goes up
git bisect good a0678a6643bf688bccce3c298a4a110af10988fc
# good: [a0ae41d8ee0549161174a39d60f7316b67a87cae] Bluetooth: btusb: Add 
support for 0cf3:e009
git bisect good a0ae41d8ee0549161174a39d60f7316b67a87cae
# good: [d5d9494d2092a7e571dee635ca254075912355c1] thinkpad_acpi: Add support 
for HKEY version 0x200
git bisect good d5d9494d2092a7e571dee635ca254075912355c1
# bad: [a6e674fa25854a7dafc59555d508855ea8fe3eaa] i2c: xgene: Avoid dma_buffer 
overrun
git bisect bad a6e674fa25854a7dafc59555d508855ea8fe3eaa
# bad: [fd4b5fa6e3487d15ede746f92601af008b2abbc0] mnt: Add a per mount 
namespace limit on the number of mounts
git bisect bad fd4b5fa6e3487d15ede746f92601af008b2abbc0
# first bad commit: [fd4b5fa6e3487d15ede746f92601af008b2abbc0] mnt: Add a per 
mount namespace limit on the number of mounts


>From a layman perspective, it doesn't seem like that could possibly cause the 
>bug.

I guess one quick way forward, rather than repeat the whole bisecting
process, is to completely reset the repository, bring it up to date,
verify the bug still exists, and then revert this specific commit and
see if the bug goes away.

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  initrd dhcp fails / ignores valid response

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I'll take a fresh look in the morning, but ran into this:

make[1]: Leaving directory 
'/home/ubuntu/storage/ubuntu-xenial/debian/build/build-generic/zfs/module'
Debug: module-check-generic
install -d 
/home/ubuntu/storage/ubuntu-xenial/debian.master/abi/4.4.0-54.76/amd64
find /home/ubuntu/storage/ubuntu-xenial/debian/build/build-generic/ -name \*.ko 
| \
sed -e 's/.*\/\([^\/]*\)\.ko/\1/' | sort > 
/home/ubuntu/storage/ubuntu-xenial/debian.master/abi/4.4.0-54.76/amd64/generic.modules
II: Checking modules for generic...previous or current modules file missing!
   
/home/ubuntu/storage/ubuntu-xenial/debian.master/abi/4.4.0-54.76/amd64/generic.modules
   
/home/ubuntu/storage/ubuntu-xenial/debian.master/abi/4.4.0-54.75/amd64/generic.modules
debian/rules.d/4-checks.mk:12: recipe for target 'module-check-generic' failed
make: *** [module-check-generic] Error 1

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I can give that a shot, following the instructions here:
https://wiki.ubuntu.com/Kernel/KernelBisection#Bisecting_Ubuntu_kernel_versions

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I should clarify, I know for certain that 4.4.0-51 is stable and
reliable (and doesn't exhibit the bug).  As part of our attempt to
verify everything was correct with the installation we had a system run
from Wednesday before Thanksgiving, all the way through to the following
Monday, during which time it had an rc.local triggered reboot (so it had
to be fully booted).

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

Okay.. this is interesting.  It seems like the Ubuntu dev version of
4.10 is actually intermittently failing (?!)  I guess the next thing to
do here is keep rebooting on this version of the kernel and see how
often the bug occurs vs doesn't occur, so I can get a feel for a
reasonable number of times to reboot with each test kernel once I
actually start bisecting.

>From the dhcp server side I can't see anything different.  The requests
look the same.

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

Gah.. okay https://wiki.ubuntu.com/KernelTeam/GitKernelBuild

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

Rolling that command against master fails too:

ubuntu@Beta:~/linux$ mainline-build-one 
afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc xenial
*** BUILDING: commit:afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc series:xenial 
abinum: ...
full_version<4.4.0>
version<4.4.0>
long
abinum<040400>
fatal: 'xenial' does not appear to be a git repository
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
error: pathspec 'xenial/master' did not match any file(s) known to git.
Deleted branch BUILD.040400 (was 794249c).
Checking out files: 100% (33279/33279), done.
Switched to a new branch 'BUILD.040400'
vvv - build head
commit afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc
Author: Linus Torvalds 
Date:   Sun Jan 10 15:01:32 2016 -0800

Linux 4.4
^^^ - build head
fatal: invalid reference: xenial/master
fatal: invalid reference: xenial/master-next
fatal: invalid reference: xenial/master
fatal: invalid reference: xenial/master-next
On branch BUILD.040400
nothing to commit, working directory clean
*** checking 
/home/ubuntu/kteam-tools/mainline-build/adhoc/0001-DISABLE-comedi.patch 
(drivers/staging/comedi/drivers/das08_cs.c 47a4f33c4733880faa50f0e64a6e5c8f 
79236ea0358db3c7a7a8a5f081c320b4) ...
md5sum: drivers/staging/ti-st/st_kim.c: No such file or directory
*** checking 
/home/ubuntu/kteam-tools/mainline-build/adhoc/0002-DISABLE-ti-st.patch 
(drivers/staging/ti-st/st_kim.c b41944e0c30683bdedb6a66e11098892 ) ...
md5sum: drivers/staging/hv/hv_mouse.c: No such file or directory
*** checking 
/home/ubuntu/kteam-tools/mainline-build/adhoc/0003-DISABLE-hyperv.patch 
(drivers/staging/hv/hv_mouse.c afd5524c29871a8293518f0be50a7474 ) ...
*** checking 
/home/ubuntu/kteam-tools/mainline-build/adhoc/0004-DISABLE-olpc.patch 
(drivers/staging/olpc_dcon/olpc_dcon_xo_1.c 13b325ae1aeee7f8602759057ed0d1f9 
9d099e35d45e22f96c4d77694a5e6c58) ...
*** checking 
/home/ubuntu/kteam-tools/mainline-build/adhoc/0005-UBUNTU-olpc_dcon_xo_1-needs-delay.h.patch
 (drivers/staging/olpc_dcon/olpc_dcon_xo_1.c 6a0ae9f73f4878052202473bb952d6e4 
9d099e35d45e22f96c4d77694a5e6c58) ...
*** checking 
/home/ubuntu/kteam-tools/mainline-build/adhoc/0006-UBUNTU-olpc_dcon_xo_1_5-needs-delay.h.patch
 (drivers/staging/olpc_dcon/olpc_dcon_xo_1_5.c 55c01b13d520fa0cdde88d8d3034f21c 
37460a6a542aa92444e9114105621f18) ...
*** checking 
/home/ubuntu/kteam-tools/mainline-build/adhoc/0007-x86-idle-APM-requires-pm_idle-always-when-it-is-a-mo.patch
 (arch/x86/kernel/process.c 1ded15dd3a3cb622df182d60160ff826 
73538a1ff57235e73e0342d9efa681f5) ...
md5sum: debian/rules.d/2-binary-arch.mk: No such file or directory
*** checking 
/home/ubuntu/kteam-tools/mainline-build/adhoc/0008-UBUNTU-packaging-do-not-fail-secure-copy-on-older-ke.patch
 (debian/rules.d/2-binary-arch.mk 647c141b53e037781844f0c04234526e ) ...
md5sum: arch/arm/mach-highbank/clock.c: No such file or directory
*** checking 
/home/ubuntu/kteam-tools/mainline-build/adhoc/0009-UBUNTU-SAUCE-highbank-export-clock-functions-for-mod.patch
 (arch/arm/mach-highbank/clock.c 119a926bf04eae5024a3002b626ef8bc ) ...
*** applying 
/home/ubuntu/kteam-tools/mainline-build/adhoc/any-0001-UBUNTU-SAUCE-add-vmlinux.strip-to-BOOT_TARGETS1-on-p.patch
 ...
Applying: UBUNTU: SAUCE: add vmlinux.strip to BOOT_TARGETS1 on powerpc
*** applying 
/home/ubuntu/kteam-tools/mainline-build/adhoc/any-0001-UBUNTU-SAUCE-tools-hv-lsvmbus-add-manual-page.patch
 ...
Applying: UBUNTU: SAUCE: tools/hv/lsvmbus -- add manual page
*** applying 
/home/ubuntu/kteam-tools/mainline-build/adhoc/yakkety-0001-disable-pie-when-gcc-has-it-enabled-by-default.patch
 ...
Applying: UBUNTU: SAUCE: (no-up) disable -pie when gcc has it enabled by default
fatal: Not a valid object name xenial/master-next:debian.master/changelog
dpkg-parsechangelog: warning:-(l0): found end of file where 
expected first heading
dpkg-parsechangelog: error: fatal error occurred while parsing -
fatal: Not a valid object name xenial/master:debian.master/changelog
dpkg-parsechangelog: warning:-(l0): found end of file where 
expected first heading
dpkg-parsechangelog: error: fatal error occurred while parsing -
/home/ubuntu/kteam-tools/mainline-build/mainline-build-one: line 291: 
debian/changelog.new: No such file or directory
mv: cannot stat 'debian/changelog.new': No such file or directory
On branch BUILD.040400
nothing to commit, working directory clean
*** using configs from Ubuntu-0 () ...
fatal: invalid reference: Ubuntu-0
fatal: invalid reference: xenial/
xenial-amd64: chroot not found (::,)

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  initrd dhcp fails / ignores valid response

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

Ahh, I see where the kteam tools stuff is supposed to come from.

It's not clear if I'm supposed to go down that route and use the
mainline-build-one script or not when trying to build the kernel in this
case.  If I use the mainline-build-one tool:

$ mainline-build-one afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc xenial
*** BUILDING: commit:afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc series:xenial 
abinum: ...
full_version<4.4.0>
version<4.4.0>
long
abinum<040400>
fatal: 'xenial' does not appear to be a git repository
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
error: pathspec 'xenial/master' did not match any file(s) known to git.
error: Cannot delete the branch 'BUILD.040400' which you are currently on.
fatal: A branch named 'BUILD.040400' already exists.


The only way this tool works with that syntax is to switch to the master 
branch, and run it from there.  I'm not sure how that's supposed to work with 
git bisect, given bisect is setting your checked out position.

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I'll get started on it. This might take a while to do.

A couple of quick observations:

1) we haven't validated that mainline 4.4.0 actually works.  I only know
certain Ubuntu versions of the 4.4.0 kernel work.  Given how much seems
to be changing between Ubuntu releases of it, that seems a risky
assumption to make.  I'll start by proving that first.

2) On the wiki you linked to: "To do this, you can use the mainline-
build-one script which can be found at ~kteam-tools/malinline-build
/maineline-build-one ."  A proper link would be useful.  Where is
~kteam-tools?

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

Tried and tested (the current up-to-date kernels at the time of
posting):

http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.10-rc1/linux-
headers-4.10.0-041000rc1-generic_4.10.0-041000rc1.201612252031_amd64.deb

http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.10-rc1/linux-
image-4.10.0-041000rc1-generic_4.10.0-041000rc1.201612252031_amd64.deb

They do not appear to suffer from the bug, dhcp was able to complete
happily via the startup scripts in the initrd environment, and the host
booted successfully.

** Tags added: kernel-fixed-upstream

** Tags added: kernel-fixed-upstream-4.10-rc1

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I've also confirmed the bug is present all the way back in
4.4.0-21-generic, and is present in 4.8.0-34-generic from yakkety-
proposed.

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

I've worked my way back through the kernels.  The bug, as it was
(avoided by ip=dhcp in the kernel command line), was in effect in
version 4.4.0-38-generic.  It was fixed in 4.4.0-42-generic.  This is
the state of play so far with kernels I've tested:

linux-image-4.4.0-38-generic - Affected
linux-image-4.4.0-42-generic - Fine
linux-image-4.4.0-43-generic - Fine
linux-image-4.4.0-45-generic - Fine
linux-image-4.4.0-47-generic - Fine
linux-image-4.4.0-51-generic - Fine
linux-image-4.4.0-53-generic - Fine
linux-image-4.4.0-57-generic - Affected
linux-image-4.4.0-58-generic - Affected  (kernel in proposed)

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

apport-collect doesn't exist in initrd.  I'm unable to supply the
requested information.

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

** Attachment added: "pcap from dhcp server side of inird startup doing dhcp"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1652348/+attachment/4795820/+files/failed.pcap

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

The checksum invalid mentioned in the pcap is interesting, but happens
in both failed and successful, so I'm not sure it's relevant.

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

** Attachment added: "pcap from dhcp server side of 'ipconfig -t "dhcp" -d 
"ens2f0" '"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1652348/+attachment/4795819/+files/worked.pcap

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

** Attachment added: "Working 4.4.0-53 initrd"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1652348/+attachment/4795794/+files/initrd.img-4.4.0-53-generic

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[Bug 1652348] Re: initrd dhcp fails / ignores valid response

[Paul Graydon]

** Attachment added: "4.4.0-57 "broken" initrd"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1652348/+attachment/4795793/+files/initrd.img-4.4.0-57-generic

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[Bug 1652348] [NEW] initrd dhcp fails / ignores valid response

[Paul Graydon]

Public bug reported:

Between kernel versions 4.4.0-53 and 4.4.0-57 a bug has been
(re?)introduced that is breaking dhcp booting in the initrd environment.
This is stopping instances that use iscsi storage from being able to
connect.

Over serial console it outputs:

IP-Config: no response after 2 secs - giving up
IP-Config: ens2f0 hardware address 90:e2:ba:d1:36:38 mtu 1500 DHCP RARP
IP-Config: ens2f1 hardware address 90:e2:ba:d1:36:39 mtu 1500 DHCP RARP
IP-Config: no response after 3 secs - giving up

with increasing delays until it fails.  At which point a simple ipconfig
-t dhcp -d "ens2f0"  works.  The console output is slightly garbled but
should give you an idea:

(initramfs) ipconfig -t dhcp -[  728.379793] ixgbe :13:00.0 ens2f0: 
changing MTU from 1500 to 9000
d "ens2f0"
IP-Config: ens2f0 hardware address 90:e2:ba:d1:36:38 mtu 1500 DHCP RARP
IP-Config: ens2f0 guessed broadcast address 10.0.1.255
IP-Config: ens2f0 complete (dhcp from 169.254.169.254):
 addres[  728.980448] ixgbe :13:00.0 ens2f0: detected SFP+: 3
s: 10.0.1.56broadcast: 10.0.1.255   netmask: 255.255.255.0
 gateway: 10.0.1.1   [  729.148410] ixgbe :13:00.0 ens2f0: NIC Link is Up 
10 Gbps, Flow Control: RX/TX
  dns0 : 169.254.169.254  dns1   : 0.0.0.0
 rootserver: 169.254.169.254 rootpath:
 filename  : /ipxe.efi


tcpdumps show that dhcp requests are being received from the host, and 
responses sent, but not accepted by the host.  When the ipconfig command is 
issued manually, an identical dhcp request and response happens, only this time 
it is accepted.  It doesn't appear to be that the messages are being sent and 
received incorrectly, just silently ignored by ipconfig.

I was seeing this behaviour earlier this year, which I was able to fix
by specifying "ip=dhcp" as a kernel parameter.  About a month ago that
was identified as causing us other problems (long story) and we dropped
it, at which point we discovered the original bug was no longer an
issue.

Putting "ip=dhcp" back on with this kernel no longer fixes the problem.

I've compared the two initrds and effectively the only thing that has
changed between the two is the kernel components.

I'm going to try and track back through kernel versions to see if I can
find which version the fix happened in to maybe provide some additional
context.  I'll also attach copies of the initrds, packet captures etc.

** Affects: linux-meta (Ubuntu)
 Importance: Undecided
 Status: New

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Title:
  initrd dhcp fails / ignores valid response

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[Bug 1312243] Re: error messages completing args inside $()

[Paul Graydon]

Still seems to be affecting 16.04.  It's really quite annoying.

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Title:
  error messages completing args inside $()

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[Bug 1640635] Re: cloud-init creates /etc/network/interfaces.d/50-cloud-init.cfg even if /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg present

[Paul Graydon]

We can tackle the other aspects of this on other tickets, but it does
seem like we have a good understanding of what is happening here. I want
to make sure we don't end up derailing slightly here from the "bug" as
it were (though it's not so much a bug, it appears)

Just operating from the principle of least-surprise, if cloud-init tells
you in a file "create this file like so, and it'll stop this one being
generated", I would expect that to be the case.

On the other hand adding in the conditionals to the comment seems like
maybe it would be overloading the comments in the file?  I like to keep
such comments about as short and sweet as possible.

Would it be more realistic to get the behaviour documented and just
point to the documents (but then I guess what about versioning?)

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Title:
  cloud-init creates /etc/network/interfaces.d/50-cloud-init.cfg even if
  /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg present

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[Bug 1640635] Re: cloud-init creates /etc/network/interfaces.d/50-cloud-init.cfg even if /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg present

[Paul Graydon]

Kernel command line:

$ cat /proc/cmdline
BOOT_IMAGE=(http)/kernel initrd=initrd root=/dev/sda3 ro 
netroot=iscsi:@169.254.0.2::3260::iqn.2015-02.oracle.boot:uefi crashkernel=auto 
ip=dhcp iscsi_initiator=iqn.2015-10.oracle:2.1g1538-gb000393 LANG=en_US.UTF-8 
console=ttyS0,9600 console=tty0

The datasource is a yaml file we generate on instance launch that is
made accessible to the host over http.  At the moment it contains very
little information:

$ curl http://169.254.169.254/openstack/latest/meta_data.json
{
  "uuid" : 
"ocid1.instance.oc1.phx.abyhqljszmao4waexfg6gxtu73phfgeclyyscoi6r3evhsaba24uupp3hu5q",
  "name" : "nvmetest",
  "availability_zone" : "phx-ad-2",
  "hostname" : "nvmetest",
  "public_keys" : {
"0" : "<>"
  },
  "meta" : { }
}

It's also available via a few different URLs, e.g.
http://169.254.169.254/openstack/2013-10-17/meta_data.json will return
the same content.

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Title:
  cloud-init creates /etc/network/interfaces.d/50-cloud-init.cfg even if
  /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg present

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[Bug 1640635] Re: cloud-init creates /etc/network/interfaces.d/50-cloud-init.cfg even if /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg present

[Paul Graydon]

Trying another time.  Again, clean instance.  This time using a very
minimal cloud.cfg:

$ cat /etc/cloud/cloud.cfg
users:
   - default

datasource_list: ['OpenStack']
datasource:
   OpenStack:
 metadata_urls: ['http://169.254.169.254']
 timeout: 10
 max_wait: 20

cloud_init_modules:
 - users-groups

system_info:
   distro: ubuntu
   default_user:
name: opc
lock_passwd: true
gecos: Oracle Public Cloud User
groups: [wheel, adm, audio, cdrom, dialout, dip, floppy, lxd, netdev, 
plugdev, sudo, video]
sudo: ["ALL=(ALL) NOPASSWD:ALL"]
shell: /bin/bash
   paths:
  cloud_dir: /var/lib/cloud/
  templates_dir: /etc/cloud/templates/
  upstart_dir: /etc/init/
   ssh_svcname: ssh


$ echo "network: {config: disabled}" | sudo tee 
/etc/cloud/cloud.cfg.d/99-disable-network-config.cfg
network: {config: disabled}
$ sudo rm /etc/network/interfaces/50-cloud-init.cfg
rm: cannot remove '/etc/network/interfaces/50-cloud-init.cfg': Not a directory


And again after a reboot:

$ cat /etc/network/interfaces.d/50-cloud-init.cfg
# This file is generated from information provided by
# the datasource.  Changes to it will not persist across an instance.
# To disable cloud-init's network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
auto lo
iface lo inet loopback

# control-manual ens2f0
iface ens2f0 inet dhcp
broadcast 10.0.0.255
dns-nameservers 169.254.169.254
gateway 10.0.0.1
netmask 255.255.255.0


$ grep "INFO.*disabled" /var/log/cloud-init.log
$

I've attached a cloud-init log from this run as well.  Hopefully should
be more succinct.

** Attachment added: "cloud-init.log"
   
https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1640635/+attachment/4775518/+files/cloud-init.log

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Title:
  cloud-init creates /etc/network/interfaces.d/50-cloud-init.cfg even if
  /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg present

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[Bug 1640635] Re: cloud-init creates /etc/network/interfaces.d/50-cloud-init.cfg even if /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg present

[Paul Graydon]

Clean instance, ran apt upgrade, and apt install cloud-init.  I didn't
replace the cloud.cfg file with one of our format as I tried to keep
changes as minimal as possible, and the supplied one seems to work
sufficiently.


$ echo "network: {config: disabled}" | sudo tee 
/etc/cloud/cloud.cfg.d/99-disable-network-config.cfg
network: {config: disabled}

$ sudo rm /etc/network/interfaces/50-cloud-init.cfg
rm: cannot remove '/etc/network/interfaces/50-cloud-init.cfg': Not a directory

$ sudo reboot
packet_write_wait: Connection to UNKNOWN: Broken pipe


After reboot:

$ cat /etc/network/interfaces.d/50-cloud-init.cfg
# This file is generated from information provided by
# the datasource.  Changes to it will not persist across an instance.
# To disable cloud-init's network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
auto lo
iface lo inet loopback

# control-manual ens2f0
iface ens2f0 inet dhcp
broadcast 10.0.0.255
dns-nameservers 169.254.169.254
gateway 10.0.0.1
netmask 255.255.255.0


$ grep "INFO.*disabled" /var/log/cloud-init.log
$

I've attached a copy of the cloud-init.log

** Attachment added: "cloud-init.log"
   
https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1640635/+attachment/4775436/+files/cloud-init.log

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Title:
  cloud-init creates /etc/network/interfaces.d/50-cloud-init.cfg even if
  /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg present

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[Bug 1640635] [NEW] cloud-init creates /etc/network/interfaces.d/50-cloud-init.cfg even if /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg present

[Paul Graydon]

Public bug reported:

Package: cloud-init 0.7.8-1-g3705bb5-0ubuntu1~16.04.3


The file /etc/network/interfaces.d/50-cloud-init.cfg states that:

# This file is generated from information provided by
# the datasource.  Changes to it will not persist across an instance.
# To disable cloud-init's network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}

On a system with this file created:

# cat /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg
network: {config: disabled}

cloud-init still ends up creating the 50-cloud-init.cfg file.  opensnoop
shows that cloud-init is definitely reading that 99-disable-network-
config.cfg file:

# opensnoop /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg
Tracing open()s for filenames containing 
"/etc/cloud/cloud.cfg.d/99-disable-network-config.cfg". Ctrl-C to end.
COMM PID  FD FILE
cloudinit0x3 
/etc/cloud/cloud.cfg.d/99-disable-network-config.cfg



I've been trying to follow the code logic, and I'm not seeing any check to see 
if the network configuration is set to disabled or not.

** Affects: cloud-init (Ubuntu)
 Importance: Undecided
 Status: New

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Title:
  cloud-init creates /etc/network/interfaces.d/50-cloud-init.cfg even if
  /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg present

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[Bug 1629972] Re: networking stop incorrectly disconnects from (network) root filesystem

[Paul Graydon]

I ran into this with iSCSI root.  Installing cloud-init resulted in
problems rebooting.

If I install the ifupdown patch (without cloud-init installed), that
triggers the bug for me.

Spinning up a clean instance, installing cloud-init, letting it run (so
the conditions that cause the bug are triggered), then installing the
ifupdown package also fails to fix the reboot problems.  I've confirmed
this persists after the next boot as well.

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Title:
  networking stop incorrectly disconnects from (network) root filesystem

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[Bug 1632405] [NEW] virt-customize enters infinite loop: dhclient-script: cannot open /etc/fstab

[Paul Graydon]

Public bug reported:

When running virt-customize against an existing raw image, it seems to
hang and do nothing.  With verbose flag passed the logs are filled with:

/sbin/dhclient-script: 31: /sbin/dhclient-script: cannot open /etc/fstab: No 
such file
RTNETLINK answers: File exists
/sbin/dhclient-script: 31: /sbin/dhclient-script: cannot open /etc/fstab: No 
such file
RTNETLINK answers: File exists
/sbin/dhclient-script: 31: /sbin/dhclient-script: cannot open /etc/fstab: No 
such file
RTNETLINK answers: File exists
/sbin/dhclient-script: 31: /sbin/dhclient-script: cannot open /etc/fstab: No 
such file
RTNETLINK answers: File exists
/sbin/dhclient-script: 31: /sbin/dhclient-script: cannot open /etc/fstab: No 
such file
RTNETLINK answers: File exists
/sbin/dhclient-script: 31: /sbin/dhclient-script: cannot open /etc/fstab: No 
such file

over and over again.

$ dpkg -l | grep guestfs
ii  libguestfs-hfsplus:amd64  1:1.32.2-4ubuntu2 
 amd64guest disk image management system - HFS+ support
ii  libguestfs-perl   1:1.32.2-4ubuntu2 
 amd64guest disk image management system - Perl bindings
ii  libguestfs-reiserfs:amd64 1:1.32.2-4ubuntu2 
 amd64guest disk image management system - ReiserFS support
ii  libguestfs-rescue:amd64   1:1.32.2-4ubuntu2 
 amd64guest disk image management system - virt-rescue enhancements
ii  libguestfs-rsync:amd641:1.32.2-4ubuntu2 
 amd64guest disk image management system - rsync support
ii  libguestfs-tools  1:1.32.2-4ubuntu2 
 amd64guest disk image management system - tools
ii  libguestfs-xfs:amd64  1:1.32.2-4ubuntu2 
 amd64guest disk image management system - XFS support
ii  libguestfs0:amd64 1:1.32.2-4ubuntu2 
 amd64guest disk image management system - shared library

$ lsb_release -rd
Description:Ubuntu 16.04.1 LTS
Release:16.04


According to 
https://answers.launchpad.net/ubuntu/+source/libguestfs/+question/372927 this 
is fixed in 1.34, though I haven't verified this for myself.

** Affects: libguestfs (Ubuntu)
 Importance: Undecided
 Status: New

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Title:
  virt-customize enters infinite loop: dhclient-script: cannot open
  /etc/fstab

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[Bug 1626679] Re: NVMe triggering kernel panic followed by "bad: scheduling from the idle thread!"

[Paul Graydon]

There isn't a kernel in proposed at the moment, but I've tested using
the latest in yakkety and it seems to be working fine.

I don't have a simple replication case for the bug, unfortunately.  It
just seems to happen for (hand-wavey guess) 50% of boots.

So far I've got this 4.8.0-19-generic kernel to boot several times over
without problem.  I'll keep rebooting and rebooting the server in the
background today, just in case, while I focus on other stuff.

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Title:
  NVMe triggering kernel panic followed by "bad: scheduling from the
  idle thread!"

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[Bug 1626679] [NEW] NVMe triggering kernel panic followed by "bad: scheduling from the idle thread!"

[Paul Graydon]

Public bug reported:

On an NVMe system I'm using, Ubuntu 16.04.1 regularly seems to trigger
off a kernel panic against somepart of the NVMe driver it looks like,
after which the logs get filled with entries over and over again of:

"bad: scheduling from the idle thread!"

Here's the initial stack trace that seems to trigger off the bug:

Sep 22 15:51:46 ubuntu kernel: [   97.478175] [ cut here 
]
Sep 22 15:51:46 ubuntu kernel: [   97.478185] WARNING: CPU: 13 PID: 0 at 
/build/linux-dcxD3m/linux-4.4.0/kernel/irq/manage.c:1438 
__free_irq+0x1d2/0x280()
Sep 22 15:51:46 ubuntu kernel: [   97.478188] Trying to free IRQ 38 from IRQ 
context!
Sep 22 15:51:46 ubuntu kernel: [   97.478191] Modules linked in: nls_iso8859_1 
ipmi_ssif intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel 
kvm irqbypass ioatdma me
i_me sb_edac shpchp edac_core lpc_ich mei 8250_fintek ipmi_msghandler mac_hid 
ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr autofs4 btrfs 
iscsi_tcp libiscsi_tcp libiscsi
scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq 
async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear 
crct10dif_pclmul ixgbe crc32_pclmu
l dca vxlan aesni_intel ip6_udp_tunnel udp_tunnel aes_x86_64 lrw gf128mul ptp 
glue_helper ahci ablk_helper pps_core cryptd nvme libahci mdio wmi fjes
Sep 22 15:51:46 ubuntu kernel: [   97.478257] CPU: 13 PID: 0 Comm: swapper/13 
Not tainted 4.4.0-31-generic #50-Ubuntu
Sep 22 15:51:46 ubuntu kernel: [   97.478260] Hardware name: Oracle Corporation 
ORACLE SERVER X5-2/ASM,MOTHERBOARD,1U, BIOS 30080100 04/13/2016
Sep 22 15:51:46 ubuntu kernel: [   97.478263]  0286 
4fea3140a01056a3 883f7f743b10 813f1143
Sep 22 15:51:46 ubuntu kernel: [   97.478267]  883f7f743b58 
81cb61f8 883f7f743b48 81081102
Sep 22 15:51:46 ubuntu kernel: [   97.478271]  0026 
883f5b2ea700 0026 
Sep 22 15:51:46 ubuntu kernel: [   97.478275] Call Trace:
Sep 22 15:51:46 ubuntu kernel: [   97.478277][] 
dump_stack+0x63/0x90
Sep 22 15:51:46 ubuntu kernel: [   97.478290]  [] 
warn_slowpath_common+0x82/0xc0
Sep 22 15:51:46 ubuntu kernel: [   97.478294]  [] 
warn_slowpath_fmt+0x5c/0x80
Sep 22 15:51:46 ubuntu kernel: [   97.478299]  [] ? 
try_to_grab_pending+0xb3/0x160
Sep 22 15:51:46 ubuntu kernel: [   97.478302]  [] 
__free_irq+0x1d2/0x280
Sep 22 15:51:46 ubuntu kernel: [   97.478306]  [] 
free_irq+0x3c/0x90
Sep 22 15:51:46 ubuntu kernel: [   97.478314]  [] 
nvme_suspend_queue+0x89/0xb0 [nvme]
Sep 22 15:51:46 ubuntu kernel: [   97.478320]  [] 
nvme_disable_admin_queue+0x27/0x90 [nvme]
Sep 22 15:51:46 ubuntu kernel: [   97.478325]  [] 
nvme_dev_disable+0x29e/0x2c0 [nvme]
Sep 22 15:51:46 ubuntu kernel: [   97.478330]  [] ? 
__nvme_process_cq+0x210/0x210 [nvme]
Sep 22 15:51:46 ubuntu kernel: [   97.478334]  [] ? 
dev_warn+0x6c/0x90
Sep 22 15:51:46 ubuntu kernel: [   97.478340]  [] 
nvme_timeout+0x110/0x1d0 [nvme]
Sep 22 15:51:46 ubuntu kernel: [   97.478344]  [] ? 
cpumask_next_and+0x2f/0x40
Sep 22 15:51:46 ubuntu kernel: [   97.478348]  [] ? 
load_balance+0x18c/0x980
Sep 22 15:51:46 ubuntu kernel: [   97.478354]  [] 
blk_mq_rq_timed_out+0x2f/0x70
Sep 22 15:51:46 ubuntu kernel: [   97.478358]  [] 
blk_mq_check_expired+0x4e/0x80
Sep 22 15:51:46 ubuntu kernel: [   97.478363]  [] 
bt_for_each+0xd8/0xe0
Sep 22 15:51:46 ubuntu kernel: [   97.478367]  [] ? 
blk_mq_rq_timed_out+0x70/0x70
Sep 22 15:51:46 ubuntu kernel: [   97.478370]  [] ? 
blk_mq_rq_timed_out+0x70/0x70
Sep 22 15:51:46 ubuntu kernel: [   97.478375]  [] 
blk_mq_queue_tag_busy_iter+0x47/0xc0
Sep 22 15:51:46 ubuntu kernel: [   97.478379]  [] ? 
blk_mq_attempt_merge+0xb0/0xb0
Sep 22 15:51:46 ubuntu kernel: [   97.478383]  [] 
blk_mq_rq_timer+0x41/0xf0
Sep 22 15:51:46 ubuntu kernel: [   97.478389]  [] 
call_timer_fn+0x35/0x120
Sep 22 15:51:46 ubuntu kernel: [   97.478393]  [] ? 
blk_mq_attempt_merge+0xb0/0xb0
Sep 22 15:51:46 ubuntu kernel: [   97.478397]  [] 
run_timer_softirq+0x23a/0x2f0
Sep 22 15:51:46 ubuntu kernel: [   97.478403]  [] 
__do_softirq+0x101/0x290
Sep 22 15:51:46 ubuntu kernel: [   97.478407]  [] 
irq_exit+0xa3/0xb0
Sep 22 15:51:46 ubuntu kernel: [   97.478413]  [] 
smp_apic_timer_interrupt+0x42/0x50
Sep 22 15:51:46 ubuntu kernel: [   97.478417]  [] 
apic_timer_interrupt+0x82/0x90
Sep 22 15:51:46 ubuntu kernel: [   97.478419][] ? 
cpuidle_enter_state+0x111/0x2b0
Sep 22 15:51:46 ubuntu kernel: [   97.478428]  [] 
cpuidle_enter+0x17/0x20
Sep 22 15:51:46 ubuntu kernel: [   97.478432]  [] 
call_cpuidle+0x32/0x60
Sep 22 15:51:46 ubuntu kernel: [   97.478436]  [] ? 
cpuidle_select+0x13/0x20
Sep 22 15:51:46 ubuntu kernel: [   97.478440]  [] 
cpu_startup_entry+0x290/0x350
Sep 22 15:51:46 ubuntu kernel: [   97.478444]  [] 
start_secondary+0x154/0x190
Sep 22 15:51:46 ubuntu kernel: [   97.478448] ---[ end trace 4f4c67e52b4d19ac 
]---

then

Sep 22 15:51:46 ubuntu kernel: [   97.478463] BUG: 

[Bug 1626679] Re: NVMe triggering kernel panic followed by "bad: scheduling from the idle thread!"

[Paul Graydon]

gzip'd copy of the kern.log showing the error.

** Attachment added: "kern.log.gz"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626679/+attachment/4746377/+files/kern.log.gz

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  NVMe triggering kernel panic followed by "bad: scheduling from the
  idle thread!"

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[Bug 1587572] [NEW] Installer doesn't provide UTC option for timezone

[Paul Graydon]

Public bug reported:

On installing the server version of 16.04 you get asked to provide
language and then a region for localisation.  The text in the installer
indicates that this will be used to help determine which timezone you
want to use for the machine.  If you put in English (US) and select
United States for location, when you eventually get to the "set the time
zone" prompt, the only option you get is to choose a US region.  There
is no possibility to select the UTC timezone.

I've tried using "C  - No Localization" as the language, but that
doesn't really change things in this regards.  I think I've tried just
about every way through that dialogue that I can find but am failing to
find UTC.  Given the purpose of UTC, and just how common it is to run
infrastructure using UTC as the time zone, it seems a little odd for it
not to be a choice on all the dialogues for choosing timezones.

** Affects: debian-installer (Ubuntu)
 Importance: Undecided
 Status: New

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Title:
  Installer doesn't provide UTC option for timezone

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[Bug 1433396] Re: MATE 14.04 & 15.04: Window Snapping "freezes" with red/color background

[Paul Graydon]

I'm using the MATE PPA http://ppa.launchpad.net/ubuntu-mate-
dev/ppa/ubuntu/ with Ubuntu 12.04.5, and get the same issue, so I'm not
sure it's related to specific versions of Ubuntu.  If there are any
suitable packages for me to report on versions for, Id be happy to do
so.

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[Bug 496354] Re: amixer doesn't seem to unmute audio

[Paul Graydon]

This one affects me as well.  Muting mutes the master, and headphone and
PCM.  Unmuting only unmutes Master.

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[Bug 951929] Re: Unity launcher and Alt-Tab switcher missing entry for gnome-terminal

[Paul Graydon]

Can't say for sure if it's a problem any more or not.  I've long since
given up on Unity, in no small part due to this bug.  The response on
the bug report did little to convince me it was worth continuing to use
it either.  A whole bunch of people experiencing it, and the bug just
constantly being punted off to the next milestone.

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[Bug 1310292] Re: installing `ruby2.0` results in ruby 1.9.3-p484 as default version

[Paul Graydon]

From the Debian POV, this is working as designed.

If that's the case, why did Debian consider it a bug and fix it
upstream?  You've got me very confused.

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[Bug 965371] Re: HTTPS requests fail on some sites on Ubuntu 12.04

[Paul Graydon]

That worked for my peculiar case too.  Mahalo!

As Pablo commented, still seems to fail on mediafire.com but I'm not
certain mediafire's end point is working correctly as it fails in both
openssl (1.0.1-4ubuntu3)  AND gnutls (3.0.11+really2.12.14-5ubuntu3) :

$  openssl s_client -connect www.mediafire.com:443
CONNECTED(0003)
140199672272544:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake 
failure:s23_lib.c:177:
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 0 bytes and written 174 bytes
---
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
---


$ gnutls-cli www.mediafire.com -p 443

Resolving 'www.mediafire.com'...
Connecting to '205.196.120.8:443'...
*** Fatal error: A TLS packet with unexpected length was received.
*** Handshake has failed
GnuTLS error: A TLS packet with unexpected length was received.


I should point out that it seems to work with the openssl 1.0.0e-2ubuntu4.2 
from 11.10, but doesn't with the gnutls 2.10.5-1ubuntu3.1 from 11.10.

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[Bug 901211] Re: compiz crashed with SIGSEGV in CompositeScreen::compositingActive()

[Paul Graydon]

Affected me last night, spawned off a tightvncserver instance, connected
and got no launcher or icons.

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[Bug 951929] Re: alt+tab doesn't show all running apps

[Paul Graydon]

I was finally able to re-create this consistently.
Clean install from Beta 1, press alt+f2, type in gnome-terminal, and hit enter 
(don't click the icon).
That resulted in a gnome-terminal screen loading but with an unfilled triangle.

It seems that some update since I originally reported the bug (and was
seemingly derided, and then ignored) has resolved this.

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[Bug 951929] Re: alt+tab doesn't show all running apps

[Paul Graydon]

I should add, the other problems still exist, as documented in screen
captures and photographs.  However given you've been ignoring those so
far in the ticket, I suppose it's unlikely we'll see any kind of
dialogue about them.

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[Bug 959245] Re: Unity hud makes Alt+tab switching difficult

[Paul Graydon]

I've been butting up against this one on and off in the Beta.  Seems to
me in no small part to be down to how fast the graphic acceleration is.
e.g. I hit this more on my computer at work as it's got a slow old
Nvidia card in it, vs my home machine with a much higher spec card in
it.

If you've got an Nvidia card I've found that the Nouveau drivers seem to
perform a lot better with Compiz than the proprietary.  Switching to
them has made Unity actually usable at work.

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[Bug 912031] Re: ubiquity crashed with TypeError in partman_column_name(): argument of type 'NoneType' is not iterable

[Paul Graydon]

Get this on choosing advanced partition tool during the installer.

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[Bug 951929] Re: alt+tab doesn't show all running apps

[Paul Graydon]

You've actually hit on the right problem there Tim.  It looks like Unity
is getting confused about where a window is.

See the next attached two screenshots.  In them you can see Gnome
Terminal running behind Ubuntu Software Center, but according to the
icon in the dock bar Unity thinks Gnome Terminal is on another desktop
(it isn't, and I've double checked).

Clicking on the Workspace Switcher and then a second time to bring it
back to where it started seems to force Unity to reevaluate what is on
what desktop and then Gnome Terminal suddenly ends up appearing in alt-
tab.

** Attachment added: close up
   
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/951929/+attachment/2876826/+files/IMG_20120315_074703.jpg

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[Bug 951929] Re: alt+tab doesn't show all running apps

[Paul Graydon]

** Attachment added: IMG_20120315_074710.jpg
   
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/951929/+attachment/2876839/+files/IMG_20120315_074710.jpg

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[Bug 951929] Re: alt+tab doesn't show all running apps

[Paul Graydon]

I believe this problem is part of an even wider scope.

Unity seems to be having big problems with remembering which workspace
an application is associated.

This is manifesting itself in one of three specific ways:

1) Applications not appearing in alt-tab. (usually combined with a
hollow triangle on left, even if window is visible)

2) Applications appearing in dock as on the current workspace (solid
triangle on left) but can't be brought to front by clicking on the icon.

3) In cases where 2) is the case, and the application is in alt-tab the
menu bar doesn't alter for the application.  Interaction with the
application works so far as mouse clicking is concerned, but not for
keyboard input, e.g. with Gedit I'm able to select and copy text but not
get a live cursor in the window to alter it.  It also means I can't
click on any of the window resize buttons or get at the menu for the
application forcing me to right click on the icon in the dash and quit
from there.

The attached screenshot 'Dead Parrot' show this, with Polly being the
stuck application.  Even though title bar isn't shaded (application is
forefront) it doesn't have the menu bar and I can't type within the
application, even though all other mouse based interaction works.

** Attachment added: Dead Parrot?
   
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/951929/+attachment/2877819/+files/stuck.png

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[Bug 727589] Re: pidgin crashed with SIGSEGV in g_type_check_instance_cast()

[Paul Graydon]

Got this under 12.04 as well.  Pidgin 1:2.10.1-1ubuntu2

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[Bug 951929] Re: alt+tab doesn't show all running apps

[Paul Graydon]

That's interesting, I'm certainly not moving it
(ctrl+alt+shift+direction isn't a combination you just stumble across),
but also that doesn't explain what's going on in note #6 with screenshot
where Chrome is clearly on the same workspace (you can see it right
behind the active terminal pane) but not appearing in the alt-tab box.

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[Bug 804662] Re: jockey-gtk crashed with TypeError in _execute_child(): execv() arg 2 must contain only strings

[Paul Graydon]

Installing manually works (for me)(, but not from Additional Hardware
Wizard

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  jockey-gtk crashed with TypeError in _execute_child(): execv() arg 2
  must contain only strings

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[Bug 951929] Re: alt+tab doesn't show gnome-terminal

[Paul Graydon]

Actually, I need to broaden the scope of this.  Looks like it's
affecting all sorts of apps at various stages.  E.g. currently I have
Chrome and Gnome-Terminal open.  Alt+tab shows Terminal and Desktop, but
not Chrome.

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[Bug 951929] Re: alt+tab doesn't show gnome-terminal

[Paul Graydon]

I'm not 100% convinced, but now wondering if it's just happening to the
first app started on boot.

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[Bug 951929] Re: alt+tab doesn't show gnome-terminal

[Paul Graydon]

No.  I hadn't moved the window, and I did double check on each workspace
just in case.  I'm a little surprised that the workspace switcher icon
is non-dynamic.  Almost every GUI indicates in some way that windows are
open on other workspaces, even minimalist GUIs do it.

I'm unable to re-create it this morning after spending 15-20 minutes
yesterday succesfully re-creating it time after time (wanted to be sure
I wasn't doing anything stupid).  Only real difference between yesterday
and today is I've installed the fglrx_updates drivers.  I'll experiment
with them on and off and see if it does make a difference.

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[Bug 951929] Re: alt+tab doesn't show gnome-terminal

[Paul Graydon]

I've attached a hopefully a good example of the behaviour, this time
affecting Chrome.

In the foreground is Gnome Terminal, with transparency enabled (and a
dmesg output just to have text appearing).  Behind it you can see Google
Chrome on the Google home page.  In the alt+tab box you can see just
Desktop and Terminal.

To get Chrome to appear in the alt+tab box I had to switch to it (using
dock icon) then press alt+tab whilst it had focus.  Alt-tabbing between
then works fine.

** Attachment added: Hopefully a good example
   
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/951929/+attachment/2852850/+files/example.jpg

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[Bug 884945] Re: aptitude show wrong package state

[Paul Graydon]

I'm seeing this in Precise still:

dpkg output to show packages are installed:
$ sudo dpkg -l | grep fgl
ii  fglrx-amdcccle-updates 2:8.911-0ubuntu1 
Catalyst Control Center for the AMD graphics accelerators
ii  fglrx-updates  2:8.911-0ubuntu1 
Video driver for the AMD graphics accelerators

Then a fairly non-specific search for fglrx:

$ sudo aptitude search fglrx
p   fglrx   
   - Video driver for the AMD graphics accelerators 
 
p   fglrx-amdcccle  
   - Catalyst Control Center for the AMD graphics accelerators  
 
p   fglrx-amdcccle-updates  
   - Catalyst Control Center for the AMD graphics accelerators  
 
v   fglrx-control   
   -
 
v   fglrx-control   
   -
 
p   fglrx-dev   
   - Video driver for the AMD graphics accelerators (devel 
files)
v   fglrx-driver
   -
 
v   fglrx-driver
   -
 
v   fglrx-driver-dev
   -
 
v   fglrx-driver-dev
   -
 
p   fglrx-updates   
   - Video driver for the AMD graphics accelerators 
 
p   fglrx-updates-dev   
   - Video driver for the AMD graphics accelerators (devel 
files)

If I search for fglrx-updates specifically though, it shows up as
installed:

$ sudo aptitude search fglrx-updates
i   fglrx-updates   
   - Video driver for the AMD graphics accelerators 
 
p   fglrx-updates-dev   
   - Video driver for the AMD graphics accelerators (devel 
files)   

System details:

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:Ubuntu precise (development branch)
Release:12.04
Codename:   precise

~$ dpkg -l | grep aptitude
ii  aptitude   0.6.5-1ubuntu1   
terminal-based package manager (terminal interface only)

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[Bug 951929] Re: alt+tab doesn't show all apps

[Paul Graydon]

** Summary changed:

- alt+tab doesn't show gnome-terminal
+ alt+tab doesn't show all apps

** Description changed:

+ edit: Updated title, its affecting more than gnome-terminal
+ 
  1) Description:   Ubuntu precise (development branch)
  Release:  12.04
  
  2) unity:
-   Installed: 5.4.0-0ubuntu2
+   Installed: 5.4.0-0ubuntu2
  
  3) Gnome-Terminal to show in list of programs to alt+tab to.
  
  4)  Alt+Tab consistently fails to show gnome-terminal for 'a while' (I
  hate to be vague, I can't figure out what suddenly triggers it to appear
  in the box).  See attached photograph of it occurring.
  
  I can make it happen at will:
  
  1) Cold boot into Ubuntu.
  2) Open gnome-terminal.
  3) Open Firefox.
  4) Press alt+tab.  alt+tab window only shows Desktop and Firefox.
  
  In attached screenshot, note that gnome-terminal has a highlighted
  background and arrow, indicating an instance of it running, as is
  Firefox.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: unity 5.4.0-0ubuntu2
  ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
  Uname: Linux 3.2.0-18-generic x86_64
  ApportVersion: 1.94.1-0ubuntu2
  Architecture: amd64
  CompizPlugins: 
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
  Date: Sat Mar 10 14:50:09 2012
  InstallationMedia: Ubuntu 12.04 LTS Precise Pangolin - Beta amd64 (20120301)
  ProcEnviron:
-  TERM=xterm
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  TERM=xterm
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)

** Summary changed:

- alt+tab doesn't show all apps
+ alt+tab doesn't show all running apps

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[Bug 951929] Re: alt+tab doesn't show all running apps

[Paul Graydon]

This seems to be happening quite frequently, but I can't figure out an
exact sequence that results in it happening.  Applications are not
always registering as running according to dock, but are clearly loaded
and visible on the screen, and not alt-tabbable.

Also noticing, in cases where the program is loaded, not appearing in
dock  (see screenshot: chrome is clearly forefront, and not appearing in
dock as running). Also it's not appearing in alt+tab.  Pressing alt+tab
to desktop reveals desktop and hides the window without any obvious way
to recover it.  Switching to any other running program and then
alt+tabbing to desktop instead of taking you to the desktop then returns
the window to the forefront.

I guess I could take a video of this behaviour if it's of any value?

** Attachment added: chrome missing.png
   
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/951929/+attachment/2853848/+files/chrome%20missing.png

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[Bug 951929] [NEW] alt+tab doesn't show gnome-terminal

[Paul Graydon]

Public bug reported:

1) Description: Ubuntu precise (development branch)
Release:12.04

2) unity:
  Installed: 5.4.0-0ubuntu2

3) Gnome-Terminal to show in list of programs to alt+tab to.

4)  Alt+Tab consistently fails to show gnome-terminal for 'a while' (I
hate to be vague, I can't figure out what suddenly triggers it to appear
in the box).  See attached photograph of it occurring.

I can make it happen at will:

1) Cold boot into Ubuntu.
2) Open gnome-terminal.
3) Open Firefox.
4) Press alt+tab.  alt+tab window only shows Desktop and Firefox.

In attached screenshot, note that gnome-terminal has a highlighted
background and arrow, indicating an instance of it running, as is
Firefox.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.4.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
CompizPlugins: 
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
Date: Sat Mar 10 14:50:09 2012
InstallationMedia: Ubuntu 12.04 LTS Precise Pangolin - Beta amd64 (20120301)
ProcEnviron:
 TERM=xterm
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: unity (Ubuntu)
 Importance: Undecided
 Status: New


** Tags: amd64 apport-bug precise

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  alt+tab doesn't show gnome-terminal

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[Bug 951929] Re: alt+tab doesn't show gnome-terminal

[Paul Graydon]

** Attachment added: photo of screen
   
https://bugs.launchpad.net/bugs/951929/+attachment/2848135/+files/IMG_20120310_145309.jpg

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https://bugs.launchpad.net/bugs/951929

Title:
  alt+tab doesn't show gnome-terminal

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[Bug 428853] Re: Remove SQl book reference in database section of Serverguide

[Paul Graydon]

This is no longer relevant.  I'm not sure at which version the reference
was removed, but it's certainly not been part of the last two revisions.

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https://bugs.launchpad.net/bugs/428853

Title:
  Remove SQl book reference in database section of Serverguide

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