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0intro opened this issue Oct 11, 2017 · 3 comments
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cmd/go: build broken on Plan 9 since CL 69830 #22219

0intro opened this issue Oct 11, 2017 · 3 comments
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FrozenDueToAge help wanted OS-Plan9
Milestone
Go1.10

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@0intro
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0intro commented Oct 11, 2017

Since CL 69830 and subsequent CLs, the build is broken on Plan 9 on all architectures.

The most recent errors are:

cmd/go

##### Building packages and commands for plan9/386.
fatal error: unexpected signal during runtime execution
[signal sys: trap: fault read code=0x0 addr=0x0 pc=0x0]

runtime stack:
runtime.throw(0x25c7a2, 0x2a)
	/tmp/workdir/go/src/runtime/panic.go:616 +0x6a
runtime.sigpanic()
	/tmp/workdir/go/src/runtime/os_plan9.go:79 +0x240

goroutine 1 [chan receive]:
syscall.startProcess(0x1068d510, 0x7, 0x1067f240, 0x4, 0x4, 0x105fd170, 0x10, 0x1068df30, 0x105fd170)
	/tmp/workdir/go/src/syscall/exec_plan9.go:514 +0xac
syscall.StartProcess(0x1068d510, 0x7, 0x1067f240, 0x4, 0x4, 0x105fd170, 0x2, 0x4, 0x0, 0x0)
	/tmp/workdir/go/src/syscall/exec_plan9.go:525 +0x48
os.startProcess(0x1068d510, 0x7, 0x1067f240, 0x4, 0x4, 0x106c1c3c, 0x10607440, 0x43, 0x43)
	/tmp/workdir/go/src/os/exec_plan9.go:33 +0x191
os.StartProcess(0x1068d510, 0x7, 0x1067f240, 0x4, 0x4, 0x106c1c3c, 0x0, 0x0, 0x4187c98)
	/tmp/workdir/go/src/os/exec.go:94 +0x48
os/exec.(*Cmd).Start(0x10608420, 0x10606d01, 0x1061f260)
	/tmp/workdir/go/src/os/exec/exec.go:363 +0x3c1
os/exec.(*Cmd).Run(0x10608420, 0x1061f260, 0x10607408)
	/tmp/workdir/go/src/os/exec/exec.go:286 +0x20
os/exec.(*Cmd).CombinedOutput(0x10608420, 0x1, 0x1, 0x10606fc0, 0x42, 0x48)
	/tmp/workdir/go/src/os/exec/exec.go:506 +0xed
cmd/go/internal/work.(*Builder).gccSupportsFlag(0x105b4230, 0x105b2af8, 0x1, 0x1, 0x254e21, 0x12, 0x0)
	/tmp/workdir/go/src/cmd/go/internal/work/build.go:3573 +0x437
cmd/go/internal/work.(*Builder).compilerCmd(0x105b4230, 0x24fca2, 0x2, 0x24fc7e, 0x2, 0x24fbb1, 0x1, 0x0, 0x0, 0x20e340, ...)
	/tmp/workdir/go/src/cmd/go/internal/work/build.go:3495 +0x435
cmd/go/internal/work.(*Builder).GccCmd(0x105b4230, 0x24fbb1, 0x1, 0x0, 0x0, 0x1060a6e0, 0xb, 0x16)
	/tmp/workdir/go/src/cmd/go/internal/work/build.go:3449 +0x64
cmd/go/internal/envcmd.MkEnv(0x10606240, 0x41, 0x41)
	/tmp/workdir/go/src/cmd/go/internal/envcmd/env.go:76 +0x31a
main.main()
	/tmp/workdir/go/src/cmd/go/main.go:122 +0x479

goroutine 5 [runnable]:
os/signal.loop()
	/tmp/workdir/go/src/os/signal/signal_plan9.go:25
created by os/signal.init.0
	/tmp/workdir/go/src/os/signal/signal_plan9.go:22 +0x36

goroutine 6 [runnable]:
text/template/parse.(*lexer).emit(0x1066b000, 0x6)
	/tmp/workdir/go/src/text/template/parse/lex.go:156 +0x89
text/template/parse.lexText(0x1066b000, 0x26f6c0)
	/tmp/workdir/go/src/text/template/parse/lex.go:270 +0x180
text/template/parse.(*lexer).run(0x1066b000)
	/tmp/workdir/go/src/text/template/parse/lex.go:232 +0x4c
created by text/template/parse.lex
	/tmp/workdir/go/src/text/template/parse/lex.go:225 +0x129

goroutine 9 [runnable, locked to thread]:
syscall.Close(0x7, 0x1067f280, 0x5)
	/tmp/workdir/go/src/syscall/zsyscall_plan9_386.go:245 +0x86
syscall.forkExec(0x1068d510, 0x7, 0x1067f240, 0x4, 0x4, 0x105fd170, 0x105b07d0, 0x0, 0x0)
	/tmp/workdir/go/src/syscall/exec_plan9.go:434 +0x4c0
syscall.startProcess.func1(0x1068d510, 0x7, 0x1067f240, 0x4, 0x4, 0x105fd170, 0x1066b400)
	/tmp/workdir/go/src/syscall/exec_plan9.go:488 +0x51
created by syscall.startProcess
	/tmp/workdir/go/src/syscall/exec_plan9.go:484 +0x80

See https://build.golang.org/log/e690b06496a0fae4f75a8261e1d7ed08573385c2
@0intro 0intro added this to the Go1.10 milestone Oct 11, 2017
@0intro 0intro self-assigned this Oct 11, 2017
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0intro commented Oct 11, 2017 •
edited
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I think there are at least two different issues.

The first issue is a change in the runtime that causes programs to regularly crash when executing commands with os/exec. It leads to the error reported earlier.

The second issue is related to CL 46037:

##### Building packages and commands for plan9/386.
runtime/internal/sys
fatal error: exitThread

runtime stack:
runtime.throw(0x251fdc, 0xa)
	/usr/go/src/runtime/panic.go:616 +0x6a
runtime.exitThread(0x105c6310)
	/usr/go/src/runtime/os_plan9.go:427 +0x2a
runtime.mexit(0x0)
	/usr/go/src/runtime/proc.go:1328 +0x10c
runtime.mstart()
	/usr/go/src/runtime/proc.go:1179 +0x6b

goroutine 1 [semacquire]:
sync.runtime_Semacquire(0x10a0423c)
	/usr/go/src/runtime/sema.go:56 +0x2d
sync.(*WaitGroup).Wait(0x10a04230)
	/usr/go/src/sync/waitgroup.go:129 +0x79
cmd/go/internal/work.(*Builder).Do(0x10692460, 0x10a02d20)
	/usr/go/src/cmd/go/internal/work/build.go:1431 +0x319
cmd/go/internal/work.InstallPackages(0x105b2088, 0x2, 0x3, 0x0)
	/usr/go/src/cmd/go/internal/work/build.go:622 +0x8b8
cmd/go/internal/work.runInstall(0x380ec0, 0x105b2088, 0x2, 0x3)
	/usr/go/src/cmd/go/internal/work/build.go:557 +0x3f
main.main()
	/usr/go/src/cmd/go/main.go:138 +0x688

goroutine 5 [syscall]:
os/signal.signal_recv(0x0, 0x0)
	/usr/go/src/runtime/sigqueue_plan9.go:109 +0x69
os/signal.loop()
	/usr/go/src/os/signal/signal_plan9.go:27 +0x19
created by os/signal.init.0
	/usr/go/src/os/signal/signal_plan9.go:22 +0x36

goroutine 6 [select]:
cmd/go/internal/work.(*Builder).Do.func2(0x10a04230, 0x10692460, 0x1095f680)
	/usr/go/src/cmd/go/internal/work/build.go:1412 +0x115
created by cmd/go/internal/work.(*Builder).Do
	/usr/go/src/cmd/go/internal/work/build.go:1409 +0x2fb

goroutine 7 [select]:
cmd/go/internal/work.(*Builder).Do.func2(0x10a04230, 0x10692460, 0x1095f680)
	/usr/go/src/cmd/go/internal/work/build.go:1412 +0x115
created by cmd/go/internal/work.(*Builder).Do
	/usr/go/src/cmd/go/internal/work/build.go:1409 +0x2fb

goroutine 8 [select]:
cmd/go/internal/work.(*Builder).Do.func2(0x10a04230, 0x10692460, 0x1095f680)
	/usr/go/src/cmd/go/internal/work/build.go:1412 +0x115
created by cmd/go/internal/work.(*Builder).Do
	/usr/go/src/cmd/go/internal/work/build.go:1409 +0x2fb

goroutine 9 [select]:
cmd/go/internal/work.(*Builder).Do.func2(0x10a04230, 0x10692460, 0x1095f680)
	/usr/go/src/cmd/go/internal/work/build.go:1412 +0x115
created by cmd/go/internal/work.(*Builder).Do
	/usr/go/src/cmd/go/internal/work/build.go:1409 +0x2fb

goroutine 10 [select]:
cmd/go/internal/work.(*Builder).Do.func2(0x10a04230, 0x10692460, 0x1095f680)
	/usr/go/src/cmd/go/internal/work/build.go:1412 +0x115
created by cmd/go/internal/work.(*Builder).Do
	/usr/go/src/cmd/go/internal/work/build.go:1409 +0x2fb

goroutine 11 [select]:
cmd/go/internal/work.(*Builder).Do.func2(0x10a04230, 0x10692460, 0x1095f680)
	/usr/go/src/cmd/go/internal/work/build.go:1412 +0x115
created by cmd/go/internal/work.(*Builder).Do
	/usr/go/src/cmd/go/internal/work/build.go:1409 +0x2fb

goroutine 12 [select]:
cmd/go/internal/work.(*Builder).Do.func2(0x10a04230, 0x10692460, 0x1095f680)
	/usr/go/src/cmd/go/internal/work/build.go:1412 +0x115
created by cmd/go/internal/work.(*Builder).Do
	/usr/go/src/cmd/go/internal/work/build.go:1409 +0x2fb

goroutine 13 [runnable]:
syscall.Seek(0x4, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0)
	/usr/go/src/syscall/syscall_plan9.go:157 +0xc5
syscall.readenv(0x10a056c9, 0x7, 0x0, 0x0, 0x0, 0x0)
	/usr/go/src/syscall/env_plan9.go:25 +0x114
syscall.Environ(0x0, 0x0, 0x0)
	/usr/go/src/syscall/env_plan9.go:101 +0x126
os.Environ(0x109d4860, 0x1e, 0x10835808)
	/usr/go/src/os/env.go:117 +0x19
cmd/go/internal/work.(*Builder).runOut(0x10692460, 0x10606e60, 0x20, 0x25553d, 0x14, 0x0, 0x0, 0x0, 0x106dd6c0, 0x10, ...)
	/usr/go/src/cmd/go/internal/work/build.go:2275 +0x5aa
cmd/go/internal/work.(*Builder).run(0x10692460, 0x10606e60, 0x20, 0x25553d, 0x14, 0x0, 0x0, 0x0, 0x106dd6c0, 0x10, ...)
	/usr/go/src/cmd/go/internal/work/build.go:2215 +0x83
cmd/go/internal/work.gcToolchain.asm(0x10692460, 0x10788850, 0x108a0ba0, 0x1, 0x1, 0x109819f4, 0x2, 0x2, 0x10981c28, 0x4)
	/usr/go/src/cmd/go/internal/work/build.go:2664 +0x7d3
cmd/go/internal/work.(*Builder).build(0x10692460, 0x10788850, 0x0, 0x0)
	/usr/go/src/cmd/go/internal/work/build.go:1670 +0x2716
cmd/go/internal/work.(*Builder).Do.func1(0x10788850)
	/usr/go/src/cmd/go/internal/work/build.go:1364 +0x20f
cmd/go/internal/work.(*Builder).Do.func2(0x10a04230, 0x10692460, 0x1095f680)
	/usr/go/src/cmd/go/internal/work/build.go:1422 +0x85
created by cmd/go/internal/work.(*Builder).Do
	/usr/go/src/cmd/go/internal/work/build.go:1409 +0x2fb

@0intro 0intro mentioned this issue Oct 11, 2017
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0intro commented Oct 11, 2017

The second issue (related to CL 46037) has been reported separately in issue #22221.

@0intro
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0intro commented Oct 12, 2017

I've opened issue #22227 to discuss about the first problem.

@0intro 0intro closed this as completed Oct 12, 2017
@golang golang locked and limited conversation to collaborators Oct 12, 2018
@rsc rsc unassigned 0intro Jun 23, 2022
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