Bug#940676: golang-1.12-go: Go builds failing on mips64el

Package: golang-1.12-go
Version: 1.12.9-2
Severity: important

go builds (dh_auto_build invoking /usr/bin/go -> golang-1.12-go) are
failing consistently on mip64el. I'm seeing the error in
golang-github-anacrolix-dms and rclone but I think other packages are
affected.


All builds fail on mip64el. mipsel is also intermittently affected,
but a giveback gets a successful build. The mipsel pattern suggests
that builds fail on mipsel-manda-03, while succeeding on eberlin and
mipsel-aql-01.


The package providing /usr/lib/go-1.12/bin/go, golang-1.12-go
(golang-1.12), built successfully 25 days ago.


dms logs are at
https://buildd.debian.org/status/logs.php?pkg=golang-github-anacrolix-dms&arch=mips64el
e.g.
https://buildd.debian.org/status/fetch.php?pkg=golang-github-anacrolix-dms&arch=mips64el&ver=1.0.0-2&stamp=1568632405&raw=0


Log snippets:
   dh_auto_build -a -O--buildsystem=golang
signal 10 received but handler not on signal stack
fatal error: non-Go code set up signal handler without SA_ONSTACK flag

runtime stack:

runtime: unexpected return pc for runtime.sigtramp called from 0xffffee4560 stack: frame={sp:0xc000009c88, fp:0xc000009cd0} stack=[0xc000001be8,0xc000009fe8) 000000c000009b88: 000000c000000480 0000000120037ad4 <runtime.throw+108> 000000c000009b98: 000000c000009ba0 000000012005380c <runtime.sigNotOnStack+172> 000000c000009ba8: 000000c000009bb0 0000000120069a50 <runtime.throw.func1+0>

000000c000009bb8:  000000012065dd02  0000000000000039

000000c000009bc8: 0000000120052a44 <runtime.sigtrampgo+700> 000000012065dd02 000000c000009bd8: 0000000000000039 000000012006e4cc <runtime.sigtramp+84>

...

runtime.sigtramp(0x0, 0x0, 0x800000000a, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)

	/usr/lib/go-1.12/src/runtime/sys_linux_mips64x.s:254 +0x54

goroutine 17 [syscall, locked to thread]:
runtime.goexit()

/usr/lib/go-1.12/src/runtime/asm_mips64x.s:646 +0x4 fp=0xc000058fe0 sp=0xc000058fe0 pc=0x12006da1c


goroutine 1 [running, locked to thread]:
	goroutine running on other thread; stack unavailable

goroutine 20 [syscall]:
os/signal.signal_recv(0x0)
	/usr/lib/go-1.12/src/runtime/sigqueue.go:139 +0x150
os/signal.loop()
	/usr/lib/go-1.12/src/os/signal/signal_unix.go:23 +0x34
created by os/signal.init.0
	/usr/lib/go-1.12/src/os/signal/signal_unix.go:29 +0x54

cd obj-mips64el-linux-gnuabi64 && go install -gcflags=all=\"-trimpath=/<<PKGBUILDDIR>>/obj-mips64el-linux-gnuabi64/src\" -asmflags=all=\"-trimpath=/<<PKGBUILDDIR>>/obj-mips64el-linux-gnuabi64/src\" -v -p 4 dh_auto_build: cd obj-mips64el-linux-gnuabi64 && go install -gcflags=all=\"-trimpath=/<<PKGBUILDDIR>>/obj-mips64el-linux-gnuabi64/src\" -asmflags=all=\"-trimpath=/<<PKGBUILDDIR>>/obj-mips64el-linux-gnuabi64/src\" -v -p 4 died with signal 10

make: *** [debian/rules:4: build-arch] Error 255

dpkg-buildpackage: error: debian/rules build-arch subprocess returned exit status 2





-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.2.0-2-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages golang-1.12-go depends on:
ii  golang-1.12-src  1.12.9-2
ii  libc6            2.29-1

Versions of packages golang-1.12-go recommends:
ii  g++         4:9.2.1-3.1
ii  gcc         4:9.2.1-3.1
ii  libc6-dev   2.29-1
ii  pkg-config  0.29-6

Versions of packages golang-1.12-go suggests:
ii  bzr              2.7.0+bzr6622-16
ii  ca-certificates  20190110
ii  git              1:2.23.0-1
ii  mercurial        5.1.1-1
ii  subversion       1.10.6-1

-- no debconf information