[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Launchpad Bug Tracker]

This bug was fixed in the package golang - 2:1.5.1-0ubuntu2.1

---
golang (2:1.5.1-0ubuntu2.1) wily; urgency=medium

  [ Michael Hudson-Doyle ]
  * Add d/patches/qemu-compat.patch (LP: #1501651)

 -- Chris J Arges   Tue, 24 Nov 2015
11:41:15 -0600

** Changed in: golang (Ubuntu Wily)
   Status: Fix Committed => Fix Released

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  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

If we need to fix snapcraft as well, please add a task for that here so
it can get rebuilt.

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  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

Verified this fixes the original issue.

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

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  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Jamie Strandboge]

FYI, I ran into this trying to use snapcraft in an armhf schroot. AIUI,
ubuntu-snappy will need to be rebuilt against golang 2:1.5.1-0ubuntu2.1
for snapcraft to be able to run 'snappy build' in the schroot.

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  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

Does it need rebuilding? I believe this patch is against the go-runtime
so as long as the correct runtime version is installed this _should_
work. But I'll defer to @mwhudson.

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  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Michael Hudson-Doyle]

It needs rebuilding.

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

Sure, if you can attach a debdiff, or upload into Wily such that it
closes out this bug that would make sense to me.

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Michael Hudson-Doyle]

I don't know if it saves time overall but I've just proposed that we
upload 1.5.2 (which includes this fix and several others) to xenial
https://bugs.launchpad.net/ubuntu/+source/golang/+bug/1524071 -- maybe
it makes sense to SRU that instead?

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  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

Hello Victor, or anyone else affected,

Accepted golang into wily-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/golang/2:1.5.1-0ubuntu2.1 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: golang (Ubuntu Wily)
   Status: In Progress => Fix Committed

** Tags added: verification-needed

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

Uploaded SRU for Wily.

** Changed in: golang (Ubuntu Trusty)
   Status: New => Invalid

** Changed in: golang (Ubuntu Wily)
 Assignee: (unassigned) => Chris J Arges (arges)

** Changed in: golang (Ubuntu Wily)
   Status: New => In Progress

** Changed in: golang (Ubuntu Wily)
   Importance: Undecided => Medium

** Description changed:

+ SRU Justification:
+ 
+ [Impact]
+ Users of go programs compiled for arm and running on x86_64 will be unable to 
emulate their programs with qemu.
+ 
+ 
+ [Test Case]
+ 1)
+ echo "package main
+ 
+ import "fmt"
+ 
+ func main() {
+  fmt.Println("Hi")
+ }
+ ">test.go
+ 
+ 2) GOARCH=arm go build test.go
+ 3) qemu-arm test
+ 
+ 
+ [Regression Potential]
+ This patch is upstream and in Xenial. The change affects golang runtime only.
+ 
+ -
+ 
  Trying to create an ARM snap with snapcraft using an ARM chroot as
  advised:
  
  perl: warning: Setting locale failed.
  perl: warning: Please check that your locale settings:
-   LANGUAGE = "en_US",
-   LC_ALL = (unset),
-   LANG = "en_US.UTF-8"
- are supported and installed on your system.
+  LANGUAGE = "en_US",
+  LC_ALL = (unset),
+  LANG = "en_US.UTF-8"
+ are supported and installed on your system.
  perl: warning: Falling back to the standard locale ("C").
  Pulling integration
  Building integration
  cp --preserve=all -R icon.svg 
/snap_spider_tweet/parts/integration/install/icon.svg
  Staging integration
  Snapping integration
  perl: warning: Setting locale failed.
  perl: warning: Please check that your locale settings:
-   LANGUAGE = "en_US",
-   LC_ALL = (unset),
-   LANG = "en_US.UTF-8"
- are supported and installed on your system.
+  LANGUAGE = "en_US",
+  LC_ALL = (unset),
+  LANG = "en_US.UTF-8"
+ are supported and installed on your system.
  perl: warning: Falling back to the standard locale ("C").
  fatal error: rt_sigaction failure
  
  runtime stack:
  runtime.throw(0x57d6ed)
-   /usr/lib/go/src/runtime/panic.go:491 +0xa4
+  /usr/lib/go/src/runtime/panic.go:491 +0xa4
  runtime.setsig(0x40, 0x5704c, 0x594d01)
-   /usr/lib/go/src/runtime/os_linux.c:302 +0xa8
+  /usr/lib/go/src/runtime/os_linux.c:302 +0xa8
  runtime.initsig()
-   /usr/lib/go/src/runtime/signal_unix.c:39 +0x88
+  /usr/lib/go/src/runtime/signal_unix.c:39 +0x88
  mstart()
-   /usr/lib/go/src/runtime/proc.c:856 +0x6c
+  /usr/lib/go/src/runtime/proc.c:856 +0x6c
  runtime.mstart()
-   /usr/lib/go/src/runtime/proc.c:836 +0x4c
+  /usr/lib/go/src/runtime/proc.c:836 +0x4c
  
  goroutine 1 [runnable]:
  runtime.main()
-   /usr/lib/go/src/runtime/proc.go:16
+  /usr/lib/go/src/runtime/proc.go:16
  runtime.goexit()
-   /usr/lib/go/src/runtime/asm_arm.s:1322 +0x4
+  /usr/lib/go/src/runtime/asm_arm.s:1322 +0x4
  
  Reproduced it two different machines.
  
  Reproducing it:
  - qemu-debootstrap --arch=armhf vivid ~/vivid/
  - set up the right sources.list
  - apt-get install software-properties-common python-software-properties
  - sudo add-apt-repository ppa:snappy-dev/tools
  - sudo apt-get update
  - sudo apt-get upgrade
  - sudo apt-get install snappy-tools bzr
  - snapcrafting any source will end up in a  similar output

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

** Also affects: golang (Ubuntu Trusty)
   Importance: Undecided
   Status: New

** Also affects: golang (Ubuntu Wily)
   Importance: Undecided
   Status: New

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Launchpad Bug Tracker]

This bug was fixed in the package golang - 2:1.5.1-0ubuntu4

---
golang (2:1.5.1-0ubuntu4) xenial; urgency=medium

  * Add d/patches/support-new-relocations.patch to fix ftbfs on xenial.

 -- Michael Hudson-Doyle   Mon, 16 Nov
2015 09:43:57 +1300

** Changed in: golang (Ubuntu)
   Status: In Progress => Fix Released

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Mathew Hodson]

** Tags added: vivid

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  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

Looks like this got uploaded already. Unsubscribing sponsors.

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  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Michael Hudson-Doyle]

Oops I got confused about version numbers. Trying again.

** Patch added: "golang_1.5.1-0ubuntu3_1.5.1-0ubuntu4.diff"
   
https://bugs.launchpad.net/ubuntu/+source/golang/+bug/1501651/+attachment/4520885/+files/golang_1.5.1-0ubuntu3_1.5.1-0ubuntu4.diff

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  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Michael Hudson-Doyle]

Ah yeah, that's because of the new binutils in xenial. Here's another
debdiff (build tested in a xenial sbuild, lintian is a bit unhappy but
the package builds)

** Patch added: "golang_1.5.1-0ubuntu2_1.5.1-0ubuntu3.diff"
   
https://bugs.launchpad.net/ubuntu/+source/golang/+bug/1501651/+attachment/4519753/+files/golang_1.5.1-0ubuntu2_1.5.1-0ubuntu3.diff

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Martin Pitt]

Uploaded, thanks!

** Changed in: golang (Ubuntu)
   Status: New => Fix Committed

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Martin Pitt]

Package fails to build on some architectures, can you please have a
look? https://launchpad.net/ubuntu/+source/golang/2:1.5.1-0ubuntu3

Unsubscribing sponsors, please re-subscribe if/when you have a followup
patch.

** Changed in: golang (Ubuntu)
   Status: Fix Committed => In Progress

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  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

Per our discussion, Michael will handle the Xenial upload, and I can SRU
where necessary.

** Changed in: qemu (Ubuntu)
   Status: Confirmed => Invalid

** Changed in: qemu (Ubuntu)
 Assignee: Chris J Arges (arges) => (unassigned)

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Michael Hudson-Doyle]

That went quickly, the fix is upstream already. Would adding the patch
to xenial be sufficient?

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Michael Hudson-Doyle]

** Changed in: golang (Ubuntu)
 Assignee: (unassigned) => Michael Hudson-Doyle (mwhudson)

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Michael Hudson-Doyle]

Here's a diff adding the patch.

** Patch added: "golang_1.5.1-0ubuntu1.1_1.5.1-0ubuntu2.diff"
   
https://bugs.launchpad.net/snapcraft/+bug/1501651/+attachment/4517816/+files/golang_1.5.1-0ubuntu1.1_1.5.1-0ubuntu2.diff

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Re: [Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Sergio Schvezov]

On Thu, Nov 12, 2015 at 5:35 PM, Chris J Arges <1501...@bugs.launchpad.net>
wrote:

> Per our discussion, Michael will handle the Xenial upload, and I can SRU
> where necessary.
>

Is it possible to SRU to trusty and vivid?

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Michael Hudson-Doyle]

It will require a slightly different patch as the affected code is in C
in the version there. Isn't vivid EOL really soon though?

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Mathew Hodson]

** No longer affects: qemu (Ubuntu)

** Changed in: golang (Ubuntu)
   Importance: Undecided => High

** Project changed: snapcraft => ubuntu

** No longer affects: ubuntu

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

** Also affects: golang (Ubuntu)
   Importance: Undecided
   Status: New

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Michael Hudson-Doyle]

I'll try to push the go fix upstream too, I think it's just wanting for
attention.

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Serge Hallyn]

@arges,

did you want to push this patch into our package until it hits upstream?

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

@serge

Sure, it's a patch to golang runtime. I'll put this on my todo list this
week.

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: qemu (Ubuntu)
   Status: New => Confirmed

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[XiaoGuo, Liu]

It affects python as well.

** Attachment added: "root@77152b79b35c: 
-home-liuxg-snappy-mqtt-Ubuntu-Core-Thingstudio_999.png"
   
https://bugs.launchpad.net/snapcraft/+bug/1501651/+attachment/4515301/+files/root%4077152b79b35c%3A%20-home-liuxg-snappy-mqtt-Ubuntu-Core-Thingstudio_999.png

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[XiaoGuo, Liu]

I also got the same problem. How to fix it?

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

Culprit in qemu code:
http://git.qemu.org/?p=qemu.git;a=blob;f=linux-user/signal.c;h=1141054be2170128d6f7a340b41484b49a255936;hb=HEAD#l82

Proposed fix (that was never merged):
https://codereview.appspot.com/124900043/diff/60001/src/pkg/runtime/os_linux.c

I was able to hack /usr/lib/go/src/runtime/os1_linux.go as follows:
<   if rt_sigaction(uintptr(i), , nil, unsafe.Sizeof(sa.sa_mask)) != 0 {
---
>   if rt_sigaction(uintptr(i), , nil, unsafe.Sizeof(sa.sa_mask)) != 0 
> && i != 64 {

After rebuilding the binary, this allowed the test case to pass.

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

Another test case:

1) 
echo "package main

import "fmt"

func main() {
fmt.Println("Hi")
}
">test.go

2)  GOARCH=arm go build test.go
3) qemu-arm test

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

This also fails with upstream qemu.
Related golang bug: https://github.com/golang/go/issues/1508

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

Filed an issue with go:
https://github.com/golang/go/issues/13024

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Chris J Arges]

** Changed in: qemu (Ubuntu)
 Assignee: (unassigned) => Chris J Arges (arges)

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[Sergio Schvezov]

** Changed in: snapcraft
   Status: New => Invalid

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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[Bug 1501651] Re: ARM chroot issues: fatal error: rt_sigaction failure

[John Lenton]

It's a long-standing qemu bug. See
https://groups.google.com/forum/#!topic/golang-nuts/MqKTX_XIOKE for
example.

** Also affects: qemu (Ubuntu)
   Importance: Undecided
   Status: New

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Title:
  ARM chroot issues: fatal error: rt_sigaction failure

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