Public bug reported:

I have a saucy/amd64 instance that was booted using the 20130822 image
(checksum c19841cd672d6fcb3d4e78f0f918f8e1) and last updated on
2013-08-29, which I finally updated today.  During the upgrade, modprobe
btrfs hung in init_module().  If I kill modprobe, the upgrade finishes.
The apport gathering is on the new kernel, since apport declined to file
a bug with the 3.11.0-3-generic kernel running.

filing here for historical purposes, I expect.  The problem does not
reproduce on a current machine running 3.11.0-14-generic.

lamont

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-14-generic 3.11.0-14.21
ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7
Uname: Linux 3.11.0-14-generic x86_64
AlsaDevices:
 total 0
 crw-rw---- 1 root audio 116,  1 Dec 12 17:45 seq
 crw-rw---- 1 root audio 116, 33 Dec 12 17:45 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory: 'iw'
CurrentDmesg: [   10.105412] init: plymouth-stop pre-start process (1008) 
terminated with status 1
Date: Thu Dec 12 17:45:40 2013
Ec2AMI: ami-00000005
Ec2AMIManifest: FIXME
Ec2AvailabilityZone: nova
Ec2InstanceType: m1.small
Ec2Kernel: aki-00000002
Ec2Ramdisk: ari-00000002
IwConfig:
 eth0      no wireless extensions.
 
 lo        no wireless extensions.
Lsusb:
 Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd 
 Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: OpenStack Foundation OpenStack Nova
MarkForUpload: True
PciMultimedia:
 
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB:
 
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-14-generic 
root=UUID=25707b7a-3d31-4823-831f-ed5306116706 ro console=tty1 console=ttyS0
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-14-generic N/A
 linux-backports-modules-3.11.0-14-generic  N/A
 linux-firmware                             N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2007
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: 
dmi:bvnBochs:bvrBochs:bd01/01/2007:svnOpenStackFoundation:pnOpenStackNova:pvr2013.1.4:cvnBochs:ct1:cvr:
dmi.product.name: OpenStack Nova
dmi.product.version: 2013.1.4
dmi.sys.vendor: OpenStack Foundation

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug ec2-images saucy

** Attachment added: "ps and strace output at the time of the hang."
   https://bugs.launchpad.net/bugs/1260431/+attachment/3928207/+files/3.11.0-3

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https://bugs.launchpad.net/bugs/1260431

Title:
  update-grub hangs under 3.11.0-3-generic

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