"SIGSEGV: segmentation violation" in the channel or scheduler subsystem

[gopherbot]

by esko.luontola:

What steps will reproduce the problem?
Unable to reproduce. It happened only once - maybe it's a concurrency bug. 
Otherwise the steps would be:
1. Unpack gospec.tar.gz (it contains the source code and the binary 
produced by "make test")
2. Execute GOMAXPROCS=4 ./gospec/src/gospec/6.out -benchmarks=.*

What is the expected output? What do you see instead?
Expected the results of all three benchmarks to be shown, but instead the 
program crashed with "SIGSEGV: segmentation violation" during one of the 
benchmarks. See crash.txt

What is your $GOOS?  $GOARCH?
linux amd64

Which revision are you using?  (hg identify)
0a2770db06ef release.2010-01-27/release

Please provide any additional information below.
CPU: Intel Core 2 Quad Q6600
OS: Ubuntu 9.10 64-bit, running inside VirtualBox 3.1.2, inside Windows 7 
64-bit
Output of "uname -a" is:
Linux vm-ubuntu64 2.6.31-16-generic #53-Ubuntu SMP Tue Dec 8 04:02:15 UTC 
2009 x86_64 GNU/Linux

Attachments:

1. crash.txt (4017 bytes)
2. gospec.tar.gz (832210 bytes)

[gopherbot]

Comment 1 by rounin.urashima:

Hello esko.luontola,
I was able to run your gospec.tar.gz file:
-=#=-
rounin@lnx-vm:~/Downloads/go_programming/578$ GOMAXPROCS=4 ./gospec/src/gospec/6.out
-benchmarks=.*
PASS
gospec.Benchmark__Running_all_specs        1    1238325000 ns/op
gospec.Benchmark__Compiling_results 1000000000           0 ns/op
gospec.Benchmark__Building_a_report 1000000000           0 ns/op
rounin@lnx-bbechar-vm:~/Downloads/go_programming/578$ 
rounin@lnx-vm:~/Downloads/go_programming/578$ uname -a
Linux lnx-vm 2.6.31-17-generic #54-Ubuntu SMP Thu Dec 10 17:01:44 UTC 2009 x86_64
GNU/Linux
-=#=-
Only difference I have is that I am running Ubuntu inside VMWare on Windows XP SP3,
and running kernel 2.6.31-17-generic dated Thu Dec 10 17:01:44 UTC 2009 x86_64 GNU/Linux
Please can you try a re-run after an update. Ubuntu by running System -->
Administration --> Update Manager.
ROuNIN

[rsc]

Comment 2:

Sorry, this is a duplicate of bug #420, which by all appearances seems to be a Linux 
kernel bug.  There's very little we the Go developers can do about it.

Status changed to Duplicate.

Merged into issue #420.

[gopherbot]

Comment 3 by rounin.urashima:

Hello esko.luontola,
I was able to run your gospec.tar.gz file:
-=#=-
rounin@lnx-vm:~/Downloads/go_programming/578$ GOMAXPROCS=4 ./gospec/src/gospec/6.out
-benchmarks=.*
PASS
gospec.Benchmark__Running_all_specs        1    1238325000 ns/op
gospec.Benchmark__Compiling_results 1000000000           0 ns/op
gospec.Benchmark__Building_a_report 1000000000           0 ns/op
rounin@lnx-vm:~/Downloads/go_programming/578$ 
rounin@lnx-vm:~/Downloads/go_programming/578$ uname -a
Linux lnx-vm 2.6.31-17-generic #54-Ubuntu SMP Thu Dec 10 17:01:44 UTC 2009 x86_64
GNU/Linux
-=#=-
Only difference I have is that I am running Ubuntu inside VMWare on Windows XP SP3,
and running kernel 2.6.31-17-generic dated Thu Dec 10 17:01:44 UTC 2009 x86_64 GNU/Linux
Please can you try a re-run after an update. Ubuntu by running System -->
Administration --> Update Manager.
ROuNIN