runtime: illegal instruction on armv5 when receiving SIGPIPE #15869
Description
- What version of Go are you using (
go version)?
go version go1.6.2 linux/amd64
- What operating system and processor architecture are you using (
go env)?
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/felipe/world/projects/go"
GORACE=""
GOROOT="/home/felipe/world/packages/go"
GOTOOLDIR="/home/felipe/world/packages/go/pkg/tool/linux_amd64"
GO15VENDOREXPERIMENT="1"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0"
CXX="g++"
CGO_ENABLED="1"
- What did you do?
Set up an simple infinite loop like:
package main
func main() {
for true {
}
}
compile with: env GOARCH=arm GOARM=5 GOOS=linux go build loop.go
run on target machine, kill with kill -SIGPIPE crashes with illegal instrucion. It actually happened to me when running Syncthing.
Here's cpuinfo on target machine (Iomega Home Media NAS):
Processor : ARM926EJ-S rev 5 (v5l)
BogoMIPS : 183.09
Features : swp half thumb fastmult edsp java
CPU implementer : 0x41
CPU architecture: 5TEJ
CPU variant : 0x0
CPU part : 0x926
CPU revision : 5
Cache type : write-back
Cache clean : cp15 c7 ops
Cache lockdown : format C
Cache format : Harvard
I size : 32768
I assoc : 4
I line length : 32
I sets : 256
D size : 32768
D assoc : 4
D line length : 32
D sets : 256
Hardware : Oxsemi NAS
Revision : 0000
Serial : 00000b4a8bf52a80
Under gdb:
(gdb) r
Starting program: /home/nascentral/helloworld
Program received signal SIGPIPE, Broken pipe.
main.main () at /home/felipe/world/projects/go/src/helloworld/helloworld.go:6
6 /home/felipe/world/projects/go/src/helloworld/helloworld.go: No such file or directory.
in /home/felipe/world/projects/go/src/helloworld/helloworld.go
Current language: auto; currently minimal
(gdb) c
Continuing.
Program received signal SIGILL, Illegal instruction.
0xffff0514 in ?? ()
(gdb) bt
#0 0xffff0514 in ?? ()
#1 0x0004e1c8 in runtime.sigtrampgo (sig=Unhandled dwarf expression opcode 0x9c
)
at /home/felipe/world/packages/go/src/runtime/signal_sigtramp.go:49
#2 0x00000000 in ?? ()
(gdb)