[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Anastasia]

>From mwhudson: we don't use gccgo on arm64 any more.

** Changed in: juju-core (Ubuntu)
   Status: Triaged => Invalid

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Launchpad Bug Tracker]

** Branch linked: lp:ubuntu/trusty-proposed/gccgo-4.9

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Launchpad Bug Tracker]

** Branch linked: lp:ubuntu/trusty-proposed/gccgo-4.9

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[dann frazier]

Marking as impacting juju-core/trusty. This is easily reproduced by
attempting to bootstrap a juju-local environment in trusty with juju-
core 1.24.7-0ubuntu1~14.04.1 when using a kernel w/ 4 level page tables.
This will be a supported config once the xenial-lts kernel is available
in trusty.

A no-change rebuild of juju-core trusty would be sufficient to resolve
this issue.


ubuntu@cvm2s2:~$ juju bootstrap --verbose
Bootstrapping environment "local"
Starting new instance for initial state server
Building tools to upload (1.24.7.1-trusty-arm64)
Bootstrap failed, destroying environment
ERROR failed to bootstrap environment: cannot upload bootstrap tools: cannot 
get version from "/tmp/juju-tools525417221/jujud": exit status 2; 
p=0x9354f000
fatal error: runtime_lfstackpush: invalid pointer

runtime stack:

:0

:0

:0

:0

:0

:0

:0

:0

:0

:0

goroutine 1 [garbage collection]:
github.com_juju_cmd.DefaultContext

/build/juju-core-qiO5uV/juju-core-1.24.7/src/github.com/juju/cmd/cmd.go:261
main.Main

/build/juju-core-qiO5uV/juju-core-1.24.7/src/github.com/juju/juju/cmd/jujud/main.go:166
main.MainWrapper

/build/juju-core-qiO5uV/juju-core-1.24.7/src/github.com/juju/juju/cmd/jujud/main.go:151
main.main

/build/juju-core-qiO5uV/juju-core-1.24.7/src/github.com/juju/juju/cmd/jujud/main_nix.go:13

goroutine 3 [syscall]:
goroutine in C code; stack unavailable


** Also affects: juju-core (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: juju-core (Ubuntu)
   Status: New => Triaged

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[dann frazier]

Marking as impacting juju-core/trusty. This is easily reproduced by
attempting to bootstrap a juju-local environment in trusty with juju-
core 1.24.7-0ubuntu1~14.04.1 when using a kernel w/ 4 level page tables.
This will be a supported config once the xenial-lts kernel is available
in trusty.

A no-change rebuild of juju-core trusty would be sufficient to resolve
this issue.


ubuntu@cvm2s2:~$ juju bootstrap --verbose
Bootstrapping environment "local"
Starting new instance for initial state server
Building tools to upload (1.24.7.1-trusty-arm64)
Bootstrap failed, destroying environment
ERROR failed to bootstrap environment: cannot upload bootstrap tools: cannot 
get version from "/tmp/juju-tools525417221/jujud": exit status 2; 
p=0x9354f000
fatal error: runtime_lfstackpush: invalid pointer

runtime stack:

:0

:0

:0

:0

:0

:0

:0

:0

:0

:0

goroutine 1 [garbage collection]:
github.com_juju_cmd.DefaultContext

/build/juju-core-qiO5uV/juju-core-1.24.7/src/github.com/juju/cmd/cmd.go:261
main.Main

/build/juju-core-qiO5uV/juju-core-1.24.7/src/github.com/juju/juju/cmd/jujud/main.go:166
main.MainWrapper

/build/juju-core-qiO5uV/juju-core-1.24.7/src/github.com/juju/juju/cmd/jujud/main.go:151
main.main

/build/juju-core-qiO5uV/juju-core-1.24.7/src/github.com/juju/juju/cmd/jujud/main_nix.go:13

goroutine 3 [syscall]:
goroutine in C code; stack unavailable


** Also affects: juju-core (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: juju-core (Ubuntu)
   Status: New => Triaged

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Launchpad Bug Tracker]

This bug was fixed in the package gccgo-4.9 - 4.9.3-0ubuntu4

---
gccgo-4.9 (4.9.3-0ubuntu4) trusty-proposed; urgency=medium

  * Upload the final GCC 4.9.3 release.
  * Merge changes from gcc-4.9 4.9.3-2ubuntu1, including:
- Fix PR go/60931, garbage collector issue with non 4kB system page size.
  LP: #1304754.
- Fix wrong-code issue in the little endian vector API (ppc64el).
  LP: #1311128.
- Fix ABI incompatibility between POWER and Z HTM builtins and intrinsics.
  LP: #1320292.
- Fix an ICE with invalid code. PR c++/61046. LP: #1313102.
- gccgo: Don't overwrite memory if an archive has a bad file name.
- Fix PR rtl-optimization/61801, sched2 miscompiles syscall sequence with 
-g.
- libgo: Fix unexpected GC interfering with closure passing.
- libgo: Fix PR other/61895, ignore small argv[0] file for backtrace.
- libgo: Fix unexpected GC interfering with closure passing.
- Fix ICE in the Go frontend. LP: #1362906.
- Enable cgo on AArch64 (Michael Hudson). LP: #1361940.
- libgo: runtime: Use the clone system call on GNU/Linux.
- libgo: Support arm64 relocations (Michael Hudson).
  * Include the cc1 binary into the gccgo-4.9 package.
  * Do not build-depend on sdt-systemtap for the trusty upload.
  * Warn about ppc ELFv2 ABI issues, which will change in GCC 5.
  * libgo: Fix PR go/67508, rewrite lfstack packing/unpacking to look more
like that in Go (Michael Hudson). LP: #1472650.

gcc-4.9 (4.9.3-2ubuntu1) wily; urgency=medium

  * Merge with Debian; remaining changes:
- Build from upstream sources.

gcc-4.9 (4.9.3-2) unstable; urgency=medium

  * Update to SVN 20150714 (r225765) from the gcc-4_9-branch.
  * Update the Linaro support to the 4.9-2015.06 release.

gcc-4.9 (4.9.3-1ubuntu1) wily; urgency=medium

  * Merge with Debian; remaining changes:
- Build from upstream sources.

gcc-4.9 (4.9.3-1) unstable; urgency=medium

  * GCC 4.9.3 release.
  * Update to SVN 20150629 (r225135) from the gcc-4_9-branch.
  * Refresh patches.

gcc-4.9 (4.9.2-22ubuntu1) wily; urgency=medium

  * Merge with Debian; remaining changes:
- Build from upstream sources.

gcc-4.9 (4.9.2-22) unstable; urgency=medium

  * Update to SVN 20150623 (r224833) from the gcc-4_9-branch.
  * Fix PR target/66483, taken from the trunk. Closes: #787689.
  * Fix "empty-binary-package" lintian warnings.
  * Fix PR tree-optimization/66233. Closes: #788812.

gcc-4.9 (4.9.2-21) unstable; urgency=medium

  * Update to SVN 20150611 (r224436) from the gcc-4_9-branch.
  * Build libstdc++6 when building the common libraries.

gcc-4.9 (4.9.2-20ubuntu1) wily; urgency=medium

  * Merge with Debian; remaining changes:
- Build from upstream sources.

gcc-4.9 (4.9.2-20) unstable; urgency=medium

  * Update to SVN 20150531 (r223898) from the gcc-4_9-branch.
  * Fix PR rtl-optimization/63843, taken from the trunk. Closes: #785475.

gcc-4.9 (4.9.2-19ubuntu1) wily; urgency=medium

  * Merge with Debian; remaining changes:
- Build from upstream sources.

gcc-4.9 (4.9.2-19) unstable; urgency=medium

  * Update to SVN 20150529 (r223861) from the gcc-4_9-branch.
  * Make symbols file symlinking for cross builds more robust.
  * Fix building cross compilers with dpkg 1.18.
  * Stop building the common libraries on m68k.
  * Disable building gdc on sh4 (bootstrap comparison failure).
  * gcc-4.9-base: Adjust gnat breaks attribute to better support
upgrades to jessie (Andreas Beckmann). Closes: #779876.

gcc-4.9 (4.9.2-18ubuntu1) wily; urgency=medium

  * Merge with Debian; remaining changes:
- Build from upstream sources.

gcc-4.9 (4.9.2-18) unstable; urgency=medium

  * Update to SVN 20150518 (r223293) from the gcc-4_9-branch.
  * Remove work arounds to build 64bit multilibs on 32bit targets,
now properly fixed upstream.
  * Re-enable running the tests.
  * Disable running the libstdc++ tests with the installed libstdc++.
Doesn't make sense anymore with the dual-abi libstdc++ from GCC 5.

gcc-4.9 (4.9.2-17ubuntu1) wily; urgency=medium

  * Merge with Debian; remaining changes:
- Build from upstream sources.

gcc-4.9 (4.9.2-17) unstable; urgency=medium

  * Update to SVN 20150516 (r223238) from the gcc-4_9-branch.
  * Again, configure with --enable-targets=powerpcle-linux on ppc64el.
Closes: #785066.
  * Remove old CFLAGS/LDFLAGS settings to build gdc.
  * Remove reference to .ico file in NEWS.html.
  * Fix -base dependency for the gcj cross packages.

gcc-4.9 (4.9.2-16ubuntu1) wily; urgency=medium

  * Update to SVN 20150508 (r222909) from the gcc-4_9-branch.

gcc-4.9 (4.9.2-16) unstable; urgency=medium

  * Update to SVN 20150503 (r222750) from the gcc-4_9-branch.
- Fix the build failure on alpha.
  * Fix gcc-itm doc-base file (Guo Yixuan). Closes: #783998.
  * On m68k, powerpcspe, sh4, sparc64, still build the libraries not
yet built by gcc-5.
  * Update the cross-biarch patch for D and Go.
  * Apply the cross-biarch patches for every 

[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[dann frazier]

Verified:

ubuntu@cvm2s:~$ juju help
p=0xa6947000
fatal error: runtime_lfstackpush: invalid pointer

runtime stack:

:0

:0

:0

:0

:0

:0

:0

:0

:0

:0

goroutine 1 [garbage collection]:
github.com_juju_cmd.DefaultContext

/build/juju-core-qiO5uV/juju-core-1.24.7/src/github.com/juju/cmd/cmd.go:261
main.Main

/build/juju-core-qiO5uV/juju-core-1.24.7/src/github.com/juju/juju/cmd/juju/main.go:54
main.main

/build/juju-core-qiO5uV/juju-core-1.24.7/src/github.com/juju/juju/cmd/juju/main.go:233

goroutine 3 [syscall]:
goroutine in C code; stack unavailable

goroutine 12 [runnable]:
ubuntu@cvm2s:~$ sudo apt-get install libgo5 -y
Reading package lists... Done
Building dependency tree   
Reading state information... Done
The following packages were automatically installed and are no longer required:
  devio libuuid-perl linux-base
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
  gcc-4.9-base libgcc1
The following packages will be upgraded:
  gcc-4.9-base libgcc1 libgo5
3 upgraded, 0 newly installed, 0 to remove and 17 not upgraded.
Need to get 2,337 kB of archives.
After this operation, 17.4 kB of additional disk space will be used.
Get:1 http://ports.ubuntu.com/ubuntu-ports/ trusty-proposed/main libgo5 arm64 
4.9.3-0ubuntu4 [2,291 kB]
Get:2 http://ports.ubuntu.com/ubuntu-ports/ trusty-proposed/main gcc-4.9-base 
arm64 4.9.3-0ubuntu4 [15.2 kB]
Get:3 http://ports.ubuntu.com/ubuntu-ports/ trusty-proposed/main libgcc1 arm64 
1:4.9.3-0ubuntu4 [30.7 kB]
Fetched 2,337 kB in 11s (212 kB/s) 
(Reading database ... 70242 files and directories currently installed.)
Preparing to unpack .../libgo5_4.9.3-0ubuntu4_arm64.deb ...
Unpacking libgo5:arm64 (4.9.3-0ubuntu4) over (4.9.1-0ubuntu1) ...
Preparing to unpack .../gcc-4.9-base_4.9.3-0ubuntu4_arm64.deb ...
Unpacking gcc-4.9-base:arm64 (4.9.3-0ubuntu4) over (4.9.1-0ubuntu1) ...
Setting up gcc-4.9-base:arm64 (4.9.3-0ubuntu4) ...
(Reading database ... 70242 files and directories currently installed.)
Preparing to unpack .../libgcc1_1%3a4.9.3-0ubuntu4_arm64.deb ...
Unpacking libgcc1:arm64 (1:4.9.3-0ubuntu4) over (1:4.9.1-0ubuntu1) ...
Setting up libgcc1:arm64 (1:4.9.3-0ubuntu4) ...
Setting up libgo5:arm64 (4.9.3-0ubuntu4) ...
Processing triggers for libc-bin (2.19-0ubuntu6.6) ...
ubuntu@cvm2s:~$ juju help
Juju -- devops distilled
https://juju.ubuntu.com/

Juju provides easy, intelligent service orchestration on top of environments
such as Amazon EC2, HP Cloud, OpenStack, MaaS, or your own local machine.

Basic commands:
  juju init generate boilerplate configuration for juju environments
  juju bootstrapstart up an environment from scratch

  juju deploy   deploy a new service
  juju add-relation add a relation between two services
  juju expose   expose a service

  juju help bootstrap   more help on e.g. bootstrap command
  juju help commandslist all commands
  juju help glossaryglossary of terms
  juju help topics  list all help topics

Provider information:
  juju help azure-provider   use on Windows Azure
  juju help ec2-provider use on Amazon EC2
  juju help hpcloud-provider use on HP Cloud
  juju help local-provider   use on this computer
  juju help openstack-provider   use on OpenStack


** Tags removed: verification-needed
** Tags added: verification-done

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Steve Langasek]

Hello dann, or anyone else affected,

Accepted gccgo-4.9 into trusty-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/gccgo-4.9/4.9.3-0ubuntu4 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: gccgo-4.9 (Ubuntu Trusty)
   Status: In Progress => Fix Committed

** Tags removed: verification-done

** Tags added: verification-needed

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Launchpad Bug Tracker]

This bug was fixed in the package gccgo-5 - 5.1~rc1-0ubuntu1.1

---
gccgo-5 (5.1~rc1-0ubuntu1.1) vivid; urgency=medium

  * libgo: Fix PR go/67508, rewrite lfstack packing/unpacking to look more
like that in Go (Michael Hudson). LP: #1472650.

 -- dann frazier   Wed, 16 Sep 2015 13:56:48 +

** Changed in: gccgo-5 (Ubuntu Vivid)
   Status: Fix Committed => Fix Released

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[dann frazier]

= vivid verification =

# My kernel has the problematic config
ubuntu@cvm1:~$ grep CONFIG_ARM64_PGTABLE_LEVELS /boot/config-$(uname -r)
CONFIG_ARM64_PGTABLE_LEVELS=4

# Build a clean vivid chroot
ubuntu@cvm1:~$ mkdir lp1472650
ubuntu@cvm1:~$ sudo debootstrap --components 'main,universe' --include 
docker.io vivid lp1472650 http://ports.ubuntu.com/ubuntu-ports > /dev/null 2>&1

# docker needs proc to be mounted
ubuntu@cvm1:~$ sudo mount proc lp1472650/proc -t proc
ubuntu@cvm1:~$ sudo chroot lp1472650 docker help
p=0x88459000
fatal error: runtime_lfstackpush: invalid pointer
[--trim--]

# It's buggy. Let's install the gccgo update
ubuntu@cvm1:~$ echo 'deb http://ports.ubuntu.com/ubuntu-ports vivid-proposed 
main universe' | sudo tee -a lp1472650/etc/apt/sources.list > /dev/null
ubuntu@cvm1:~$ sudo chroot lp1472650 apt-get update > /dev/null 2>&1
ubuntu@cvm1:~$ sudo chroot lp1472650 apt-get install libgo7
Reading package lists... Done
Building dependency tree... Done
The following extra packages will be installed:
  gcc-5-base libgcc1
The following packages will be upgraded:
  gcc-5-base libgcc1 libgo7
3 upgraded, 0 newly installed, 0 to remove and 8 not upgraded.
Need to get 6243 kB of archives.
After this operation, 2048 B of additional disk space will be used.
Do you want to continue? [Y/n] 
Get:1 http://ports.ubuntu.com/ubuntu-ports/ vivid-proposed/universe libgo7 
arm64 5.1~rc1-0ubuntu1.1 [6198 kB]
Get:2 http://ports.ubuntu.com/ubuntu-ports/ vivid-proposed/main gcc-5-base 
arm64 5.1~rc1-0ubuntu1.1 [14.4 kB]
Get:3 http://ports.ubuntu.com/ubuntu-ports/ vivid-proposed/main libgcc1 arm64 
1:5.1~rc1-0ubuntu1.1 [31.0 kB]
Fetched 4733 kB in 28s (166 kB/s)   
  
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
E: Can not write log (Is /dev/pts mounted?) - posix_openpt (2: No such file or 
directory)
(Reading database ... 11950 files and directories currently installed.)
Preparing to unpack .../libgo7_5.1~rc1-0ubuntu1.1_arm64.deb ...
Unpacking libgo7:arm64 (5.1~rc1-0ubuntu1.1) over (5.1~rc1-0ubuntu1) ...
Preparing to unpack .../gcc-5-base_5.1~rc1-0ubuntu1.1_arm64.deb ...
Unpacking gcc-5-base:arm64 (5.1~rc1-0ubuntu1.1) over (5.1~rc1-0ubuntu1) ...
Setting up gcc-5-base:arm64 (5.1~rc1-0ubuntu1.1) ...
(Reading database ... 11950 files and directories currently installed.)
Preparing to unpack .../libgcc1_1%3a5.1~rc1-0ubuntu1.1_arm64.deb ...
Unpacking libgcc1:arm64 (1:5.1~rc1-0ubuntu1.1) over (1:5.1~rc1-0ubuntu1) ...
Setting up libgcc1:arm64 (1:5.1~rc1-0ubuntu1.1) ...
Setting up libgo7:arm64 (5.1~rc1-0ubuntu1.1) ...
Processing triggers for libc-bin (2.21-0ubuntu4) ...
ubuntu@cvm1:~$ sudo chroot lp1472650 docker help
Usage: docker [OPTIONS] COMMAND [arg...]

A self-sufficient runtime for linux containers.

[--trim--]

# It works now.
# I also noticed that there's a docker update in vivid-proposed.
# Let's make sure that works too:
ubuntu@cvm1:~$ sudo chroot lp1472650 apt-get dist-upgrade -y
Reading package lists... Done
Building dependency tree   
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  apt apt-utils docker.io libapt-inst1.5 libapt-pkg4.12 login ntpdate passwd
8 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 9139 kB/9437 kB of archives.
After this operation, 1219 kB of additional disk space will be used.
Get:1 http://ports.ubuntu.com/ubuntu-ports/ vivid-proposed/main libapt-pkg4.12 
arm64 1.0.9.7ubuntu4.2 [618 kB]
Get:2 http://ports.ubuntu.com/ubuntu-ports/ vivid-proposed/main apt arm64 
1.0.9.7ubuntu4.2 [976 kB]
Get:3 http://ports.ubuntu.com/ubuntu-ports/ vivid-proposed/main libapt-inst1.5 
arm64 1.0.9.7ubuntu4.2 [57.5 kB]
Get:4 http://ports.ubuntu.com/ubuntu-ports/ vivid-proposed/main ntpdate arm64 
1:4.2.6.p5+dfsg-3ubuntu6.1 [50.1 kB]
Get:5 http://ports.ubuntu.com/ubuntu-ports/ vivid-proposed/main passwd arm64 
1:4.1.5.1-1.1ubuntu4.1 [728 kB]
Get:6 http://ports.ubuntu.com/ubuntu-ports/ vivid-proposed/main apt-utils arm64 
1.0.9.7ubuntu4.2 [172 kB]
Get:7 http://ports.ubuntu.com/ubuntu-ports/ vivid-proposed/universe docker.io 
arm64 1.6.2~dfsg1-1ubuntu3~15.04.1 [6536 kB]
Fetched 9139 kB in 51s (176 kB/s)   
  
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
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perl: warning: Falling back to the 

[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[dann frazier]

** Changed in: gccgo-4.9 (Ubuntu Vivid)
   Status: New => In Progress

** Changed in: gccgo-4.9 (Ubuntu Trusty)
   Status: Confirmed => Invalid

** Changed in: gccgo-4.9 (Ubuntu Trusty)
   Status: Invalid => In Progress

** Changed in: gccgo-4.9 (Ubuntu Vivid)
   Status: In Progress => Invalid

** Changed in: gccgo-4.9 (Ubuntu Wily)
   Status: New => Invalid

** Changed in: gccgo-5 (Ubuntu Vivid)
   Status: New => In Progress

** Changed in: gccgo-5 (Ubuntu)
   Status: New => Invalid

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  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Launchpad Bug Tracker]

** Branch linked: lp:ubuntu/vivid-proposed/gccgo-5

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  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[dann frazier]

** Description changed:

- lxd 0.12-0ubuntu2
- libgo7/5.1.1-12ubuntu1
+ [Impact]
+ Various go-based packages crash on startup on arm64 when booted with a kernel 
where CONFIG_ARM64_PGTABLE_LEVELS=4. LXD, docker and juju are examples.
  
- Jul 08 00:11:16 vital-beggar systemd[1]: Starting Container hypervisor based 
on LXC...
- -- Subject: Unit lxd.service has begun start-up
- -- Defined-By: systemd
- -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
- -- 
- -- Unit lxd.service has begun starting up.
- Jul 08 00:11:16 vital-beggar lxd[1712]: p=0x98d18000
- Jul 08 00:11:16 vital-beggar lxd[1712]: fatal error: runtime_lfstackpush: 
invalid pointer
- Jul 08 00:11:16 vital-beggar lxd[1712]: runtime stack:
- Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_dopanic
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/panic.c:135
- Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_throw
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/panic.c:193
- Jul 08 00:11:16 vital-beggar lxd[1712]: runtime.lfstackpush
- Jul 08 00:11:16 vital-beggar lxd[1712]: 
../../../src/libgo/runtime/lfstack.goc:40
- Jul 08 00:11:16 vital-beggar lxd[1712]: getempty
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:1377
- Jul 08 00:11:16 vital-beggar lxd[1712]: enqueue1
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:1255
- Jul 08 00:11:16 vital-beggar lxd[1712]: markroot
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:1285
- Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_parfordo
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/parfor.c:88
- Jul 08 00:11:16 vital-beggar lxd[1712]: gc
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:2266
- Jul 08 00:11:16 vital-beggar lxd[1712]: mgc
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:2211
- Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_mstart
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:1076
- Jul 08 00:11:16 vital-beggar lxd[1712]: goroutine 16 [garbage collection]:
- Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Main process exited, 
code=exited, status=2/INVALIDARGUMENT
- Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Unit entered failed 
state.
- Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Failed with result 
'exit-code'.
- Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_mcall
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:295
- Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_gc
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:2187
- Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_mallocgc
- Jul 08 00:11:16 vital-beggar lxd[1712]: 
../../../src/libgo/runtime/malloc.goc:259
- Jul 08 00:11:16 vital-beggar lxd[1712]: :0
- Jul 08 00:11:16 vital-beggar lxd[1712]: :0
- Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_main
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:626
- Jul 08 00:11:16 vital-beggar lxd[1712]: goroutine 17 [runnable]:
- Jul 08 00:11:16 vital-beggar lxd[1712]: kickoff
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:232
- Jul 08 00:11:16 vital-beggar lxd[1712]: created by runtime_main
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:598
- Jul 08 00:11:16 vital-beggar lxd[1712]: goroutine 18 [runnable]:
- Jul 08 00:11:16 vital-beggar lxd[1712]: kickoff
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:232
- Jul 08 00:11:16 vital-beggar lxd[1712]: created by runtime_createfing
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:2572
- Jul 08 00:11:16 vital-beggar lxd[1712]: goroutine 19 [runnable]:
- Jul 08 00:11:16 vital-beggar lxd[1712]: kickoff
- Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:232
- Jul 08 00:11:16 vital-beggar lxd[1712]: created by os_signal..import
- Jul 08 00:11:16 vital-beggar lxd[1712]: 
../../../src/libgo/go/os/signal/signal_unix.go:25
- Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Service hold-off time 
over, scheduling restart.
- Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Start request repeated 
too quickly.
- Jul 08 00:11:16 vital-beggar systemd[1]: Failed to start Container hypervisor 
based on LXC.
- -- Subject: Unit lxd.service has failed
- -- Defined-By: systemd
- -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
- -- 
- -- Unit lxd.service has failed.
- -- 
- -- The result is failed.
- Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Unit entered failed 
state.
- Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Failed with result 
'start-limit'.
+ Ubuntu does not ship with this config, so it is currently not impacted.
+ However, we would like to enable this config to add new hardware support
+ in 15.10. The 15.10 

[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Brian Murray]

Hello dann, or anyone else affected,

Accepted gccgo-5 into vivid-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/gccgo-5/5.1~rc1-0ubuntu1.1 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: gccgo-5 (Ubuntu Vivid)
   Status: In Progress => Fix Committed

** Tags added: verification-needed

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  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Michael Hudson-Doyle]

Here's a patch for trusty, based on the gccgo-4.9 from ~ubuntu-
toolchain-r/+archive/ubuntu/ppa:
http://people.canonical.com/~mwh/gccgo-4.9_4.9.3-0ubuntu3_4.9.3-0ubuntu4.diff
(not tested yet).

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  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Michael Hudson-Doyle]

Oh yes, and dann and I confirmed yesterday that the bug is no longer
present in wily.

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Launchpad Bug Tracker]

This bug was fixed in the package gcc-5 - 5.2.1-17ubuntu1

---
gcc-5 (5.2.1-17ubuntu1) wily; urgency=medium

  * Merge with Debian; remaining changes:
- Build from upstream sources.

 -- Matthias Klose   Fri, 11 Sep 2015 03:24:48 +0200

** Changed in: gcc-5 (Ubuntu)
   Status: New => Fix Released

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Michael Hudson-Doyle]

Filed upstream as https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67508

** Bug watch added: GCC Bugzilla #67508
   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67508

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  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[dann frazier]

** Also affects: gcc via
   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67508
   Importance: Unknown
   Status: Unknown

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[Michael Hudson-Doyle]

The fix I've sent upstream is https://go-
review.googlesource.com/#/c/13037/. It hasn't been reviewed yet, but
I've confirmed it works to my own satisfaction on arm64.

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[dann frazier]

** No longer affects: gccgo-5 (Ubuntu Trusty)

** Also affects: gcc-5 (Ubuntu)
   Importance: Undecided
   Status: New

** No longer affects: gccgo-5 (Ubuntu Wily)

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[dann frazier]

** Summary changed:

- [arm64] lxd crashes on startup
+ [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

** Package changed: lxd (Ubuntu) = gcc-4.9 (Ubuntu)

** Changed in: gcc-4.9 (Ubuntu)
   Status: New = Confirmed

** Also affects: gcc-4.8 (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: gcc-4.8 (Ubuntu)
   Status: New = Confirmed

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[dann frazier]

** Also affects: gcc-4.8 (Ubuntu Trusty)
   Importance: Undecided
   Status: New

** Also affects: gcc-4.9 (Ubuntu Trusty)
   Importance: Undecided
   Status: New

** Also affects: gcc-4.8 (Ubuntu Wily)
   Importance: Undecided
   Status: Confirmed

** Also affects: gcc-4.9 (Ubuntu Wily)
   Importance: Undecided
   Status: Confirmed

** Also affects: gcc-4.8 (Ubuntu Vivid)
   Importance: Undecided
   Status: New

** Also affects: gcc-4.9 (Ubuntu Vivid)
   Importance: Undecided
   Status: New

** Changed in: gcc-4.8 (Ubuntu Trusty)
   Status: New = Confirmed

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  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[dann frazier]

** No longer affects: gcc-4.8 (Ubuntu Trusty)

** No longer affects: gcc-4.8 (Ubuntu Wily)

** No longer affects: gcc-4.8 (Ubuntu Vivid)

** No longer affects: gcc-4.9 (Ubuntu Trusty)

** No longer affects: gcc-4.9 (Ubuntu Vivid)

** No longer affects: gcc-4.9 (Ubuntu Wily)

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Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

[dann frazier]

** Also affects: gccgo-4.9 (Ubuntu)
   Importance: Undecided
   Status: New

** No longer affects: gcc-4.8 (Ubuntu)

** No longer affects: gcc-4.9 (Ubuntu)

** Changed in: gccgo-4.9 (Ubuntu Trusty)
   Status: New = Confirmed

** Also affects: gccgo-5 (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: gcc-4.8 (Ubuntu Trusty)
   Status: Confirmed = New

** Changed in: gcc-4.8 (Ubuntu Wily)
   Status: Confirmed = New

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  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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