openjdk team mailing list archive

[Ben Howard <634487@xxxxxxxxxxxxxxxxxx>]

We have investigated the problem and can confirm that the bug lies in
the underlying EC2 hypervisor; this bug cannot be fixed at the AMI
level.  The problem only affects launches on 32-bit t1.micro instances.

Canonical has been in contact with and remains in contact with Amazon
regarding a final resolution of this issue.   As more information
becomes available, Canonical will share it with the community.

We recommend that users who need Java on 32-bit t1.micros launch a
m1.small, install Java and then change the instance type to a t1.micro.
This can be done by doing stopping the instance and modifying the
instance type using either the AWS console or using the command line
tools.  Users who have existing 32-bit t1.micros and need Java use the
same method to change their instance(s) to m1.smalls, install Java and
then switch back to t1.micro.

However, we have had some reports that the work around may not work for
some users of 32-bit t1.micros. Users who use the work-around to install
Java may hit the hyper-visor bug running Java in production. Users who
hit the bug after employing the work around, should consider using a
m1.small.

We are not aware of a specific time-line to permanently resolve the
underlying hypervisor issue at this time. Users that need more specific
information about this issue should contact Amazon Web Services
directly.

-- 
You received this bug notification because you are a member of OpenJDK,
which is subscribed to openjdk-6 in Ubuntu.
https://bugs.launchpad.net/bugs/634487

Title:
  t1.micro instance hangs when installing java

Status in Release Notes for Ubuntu:
  Fix Released
Status in “linux” package in Ubuntu:
  Confirmed
Status in “linux-ec2” package in Ubuntu:
  Invalid
Status in “openjdk-6” package in Ubuntu:
  Invalid
Status in “sun-java6” package in Ubuntu:
  Invalid
Status in “linux” source package in Lucid:
  Invalid
Status in “linux-ec2” source package in Lucid:
  Confirmed
Status in “openjdk-6” source package in Lucid:
  Invalid
Status in “sun-java6” source package in Lucid:
  Invalid
Status in “linux” source package in Maverick:
  Confirmed
Status in “linux-ec2” source package in Maverick:
  Invalid
Status in “openjdk-6” source package in Maverick:
  Invalid
Status in “sun-java6” source package in Maverick:
  Invalid
Status in “linux” source package in Natty:
  Confirmed
Status in “linux-ec2” source package in Natty:
  Invalid
Status in “openjdk-6” source package in Natty:
  Invalid
Status in “sun-java6” source package in Natty:
  Invalid

Bug description:
  Binary package hint: cloud-init

  I booted the 32bit EBS lucid AMI (ami-1234de7b) for a t1.micro
  instance. I attempted to install Sun Java. The instance hung during
  the install. Repros every time. Only repros on t1.micro instances. I
  tried adding swap in case it was an out-of-memory condition, and it
  still repro'd. No reboots or anything else like that were involved so
  it's not the same issue as #634102

  Console log snippet (full one attached):

  [  525.195499] ------------[ cut here ]------------
  [  525.195515] kernel BUG at /build/buildd/linux-ec2-2.6.32/arch/x86/mm/hypervisor.c:461!
  [  525.195522] invalid opcode: 0000 [#1] SMP 
  [  525.195527] last sysfs file: /sys/kernel/uevent_seqnum
  [  525.195531] Modules linked in: ipv6
  [  525.195537] 
  [  525.195541] Pid: 8663, comm: java Not tainted (2.6.32-308-ec2 #15-Ubuntu) 
  [  525.195545] EIP: 0061:[<c0118550>] EFLAGS: 00010282 CPU: 0
  [  525.195553] EIP is at T.566+0x150/0x180
  [  525.195557] EAX: ffffffea EBX: c1f17e70 ECX: 00000002 EDX: 00000000
  [  525.195561] ESI: 0d537000 EDI: 00000004 EBP: c1f17ebc ESP: c1f17e60
  [  525.195565]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0069
  [  525.195580] Process java (pid: 8663, ti=c1f16000 task=e5373200 task.ti=c1f16000)
  [  525.195588] Stack:
  [  525.195591]  c103a020 c1f17ee0 80000000 00000061 0000000e 00000000 c1c81000 0d537061
  [  525.195603] <0> 80000004 00000000 00000000 00000040 00000001 ffffffea c1f17ee0 00000001
  [  525.195617] <0> 00000000 00007ff0 00000000 00000000 0d537001 00000004 c14e5000 c1f17efc
  [  525.195632] Call Trace:
  [  525.195640]  [<c01188dd>] ? xen_l3_entry_update+0x12d/0x1b0
  [  525.195647]  [<c01145de>] ? pud_populate+0x9e/0xc0
  [  525.195654]  [<c01aed59>] ? __pmd_alloc+0x99/0xa0
  [  525.195659]  [<c01b2eb9>] ? handle_mm_fault+0x509/0x5b0
  [  525.195665]  [<c01b7b2a>] ? do_munmap+0x22a/0x2b0
  [  525.195672]  [<c05370f9>] ? do_page_fault+0x119/0x340
  [  525.195677]  [<c0536fe0>] ? do_page_fault+0x0/0x340
  [  525.195683]  [<c0535525>] ? error_code+0x3d/0x44
  [  525.195687] Code: c3 64 a0 cc 40 6f c0 84 c0 75 28 8b 5d a8 b9 01 00 00 00 31 d2 be f0 7f 00 00 e8 dc 8a fe ff 85 c0 79 d6 0f 0b eb fe 8d 74 26 00 <0f> 0b eb fe 0f 0b eb fe 8b 45 a8 31 c9 ba 01 00 00 00 c7 04 24 
  [  525.195754] EIP: [<c0118550>] T.566+0x150/0x180 SS:ESP 0069:c1f17e60
  [  525.195769] ---[ end trace 9706b235d81a7968 ]---

  
  Script which can 100% repro the problem:

  #!/bin/bash

  export DEBIAN_FRONTEND=noninteractive
  add-apt-repository "deb http://archive.canonical.com/ lucid partner"
  apt-get update
  echo 'sun-java6-bin   shared/accepted-sun-dlj-v1-1    boolean true
  sun-java6-jdk   shared/accepted-sun-dlj-v1-1    boolean true
  sun-java6-jre   shared/accepted-sun-dlj-v1-1    boolean true
  sun-java6-jre   sun-java6-jre/stopthread        boolean true
  sun-java6-jre   sun-java6-jre/jcepolicy note
  sun-java6-bin   shared/present-sun-dlj-v1-1     note
  sun-java6-jdk   shared/present-sun-dlj-v1-1     note
  sun-java6-jre   shared/present-sun-dlj-v1-1     note
  '|debconf-set-selections
  apt-get -y install sun-java6-jdk

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-release-notes/+bug/634487/+subscriptions