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+permissions: 0.825
+semantic: 0.689
+other: 0.595
+debug: 0.579
+device: 0.562
+graphic: 0.530
+performance: 0.525
+network: 0.507
+PID: 0.507
+vnc: 0.487
+boot: 0.476
+files: 0.469
+KVM: 0.426
+socket: 0.415
+
+cannot run golang app with docker, version 17.09.1-ce, disabling core 0 and qemu-arm, version 2.7.
+
+Hello!
+I figure out that sometimes simple go application is not working.
+I am using docker + qemu-arm + go( for armv7l).
+
+These are version info below.
+
+root@VDBS1535:~# docker -v
+Docker version 17.09.1-ce, build 19e2cf6
+
+bash-3.2# qemu-arm --version
+qemu-arm version 2.7.0, Copyright (c) 2003-2016 Fabrice Bellard and the QEMU Project developers
+
+$ go version
+go version go1.12.6 linux/arm
+$ go env
+GOARCH="arm"
+GOBIN=""
+GOCACHE="/home/quickbuild/.cache/go-build"
+GOEXE=""
+GOFLAGS=""
+GOHOSTARCH="arm"
+GOHOSTOS="linux"
+GOOS="linux"
+GOPATH="/home/quickbuild/go"
+GOPROXY=""
+GORACE=""
+GOROOT="/usr/lib/golang"
+GOTMPDIR=""
+GOTOOLDIR="/usr/lib/golang/pkg/tool/linux_arm"
+GCCGO="gccgo"
+GOARM="7"
+CC="gcc"
+CXX="g++"
+CGO_ENABLED="1"
+GOMOD=""
+CGO_CFLAGS="-g -O2"
+CGO_CPPFLAGS=""
+CGO_CXXFLAGS="-g -O2"
+CGO_FFLAGS="-g -O2"
+CGO_LDFLAGS="-g -O2"
+PKG_CONFIG="pkg-config"
+GOGCCFLAGS="-fPIC -marm -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build242285369=/tmp/go-build -gno-record-gcc-switches"
+
+This issue is come only when I disable core 0 using a command below.
+please check "--cpuset-cpus=1-55" option.
+
+sudo docker run --privileged -d -i -t --cpuset-cpus=1-55 --mount type=bind,source="/home/dw83kim/mnt",destination="/mnt" --network host --name="ubuntu_core1" ubuntu:xenial-20200212
+
+
+This is what I have tested in the environment above.
+
+package main
+func main(){
+    for i:=0; i<1000; i++ {
+        println("Hello world")
+    }
+}
+
+This is one of the error logs have faced sometimes not always.
+
+bash-3.2# go run test.go
+fatal error: schedule: holding locks
+panic during panic
+SIGILL: illegal instruction
+PC=0xc9ec4c m=3 sigcode=2
+
+goroutine 122 [runnable]:
+qemu: uncaught target signal 11 (Segmentation fault) - core dumped
+Segmentation fault (core dumped)
+bash-3.2#
+
+Please check it.
+Thanks in advance.
+
+This is a known and fixed bug in QEMU. Please try a more recent version than 2.7 (eg 4.2, which is the most recent release).
+
+
+Could you retest with latest version (4.2.0) of QEMU?
+
+LP:1696773 is the old bug that I think is probably the cause here, though 2.7 is old enough it has a bunch of other linux-user race condition bugs that we've since fixed.
+
+
+Hello! Peter and Laurent,
+Thanks for your kind & rapid reply.
+
+It took long to merge the patch Peter mentioned.
+After applying the patch the problem is gone but I found new issue.
+
+When I had tried to test for the first time after making new docker container it took much longer time.
+
+
+bash-3.2# time go run test.go
+Hello world
+
+real	5m3.516s
+user	5m48.696s
+sys	13m32.600s
+bash-3.2# time go run test.go
+Hello world
+
+real	0m1.784s
+user	0m2.339s
+sys	0m1.742s
+bash-3.2# time go run test.go
+Hello world
+
+real	0m1.881s
+user	0m2.302s
+sys	0m1.926s
+bash-3.2# pwd
+
+I believe that 5 min for just printing "Hello world" is not your expectation.
+
+Is it also known issue?
+Please check it.
+
+Thanks.
+
+
+
+The QEMU project is currently moving its bug tracking to another system.
+For this we need to know which bugs are still valid and which could be
+closed already. Thus we are setting older bugs to "Incomplete" now.
+
+If you still think this bug report here is valid, then please switch
+the state back to "New" within the next 60 days, otherwise this report
+will be marked as "Expired". Or please mark it as "Fix Released" if
+the problem has been solved with a newer version of QEMU already.
+
+Thank you and sorry for the inconvenience.
+
+
+[Expired for QEMU because there has been no activity for 60 days.]
+