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runtime: unexpected return pc for runtime.(*mheap).alloc #35328

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mvdan opened this issue Nov 3, 2019 · 0 comments

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@mvdan
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@mvdan mvdan commented Nov 3, 2019

Apologies if this is a duplicate of an existing issue. I saw some similar open and closed issues, but none referenced the same function, so I'm opening a new issue to be safe.

$ go version
go version devel +d2c039fb21 Sun Nov 3 01:44:46 2019 +0000 linux/amd64
$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/mvdan/.cache/go-build"
GOENV="/home/mvdan/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GONOPROXY="brank.as/*"
GONOSUMDB="brank.as/*"
GOOS="linux"
GOPATH="/home/mvdan/go"
GOPRIVATE="brank.as/*"
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/home/mvdan/tip"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/home/mvdan/tip/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
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 -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build616221183=/tmp/go-build -gno-record-gcc-switches"

Full panic output:

$ go test
--- FAIL: TestWayland (4.19s)
    wayland_test.go:83: could not build app: exit status 2:
        # gioui.org/internal/ops
        runtime: unexpected return pc for runtime.(*mheap).alloc called from 0x656c676f6f672f74
        stack: frame={sp:0xc0005b5360, fp:0xc0005b5368} stack=[0xc0005b4000,0xc0005b6000)
        000000c0005b5260:  0000000000000000  0000000000000000
        000000c0005b5270:  0000000000000000  0000000000000000
        000000c0005b5280:  0000000000000000  0000000000000000
        000000c0005b5290:  0000000000000000  0000000000000000
        000000c0005b52a0:  0000000000000000  0000000000000000
        000000c0005b52b0:  0000000000000000  0000000000000000
        000000c0005b52c0:  0000000000000000  0000000000000000
        000000c0005b52d0:  0000000000000000  0000000000000000
        000000c0005b52e0:  0000000000000000  0000000000000000
        000000c0005b52f0:  0000000000000000  0000000000000000
        000000c0005b5300:  0000000000000000  0000000000000000
        000000c0005b5310:  0000000000000000  0000000000000000
        000000c0005b5320:  0000000000000000  0000000000000000
        000000c0005b5330:  0000000000000000  0000000000000000
        000000c0005b5340:  0000000000000000  0000000000000000
        000000c0005b5350:  0000000000000000  0000000000000000
        000000c0005b5360: <656c676f6f672f74 >732d64756f6c632d
        000000c0005b5370:  0000000000000000  0000000000000000
        000000c0005b5380:  0000000000000000  0000000000000000
        000000c0005b5390:  0000000000000000  0000000000000000
        000000c0005b53a0:  0000000000000000  0000000000000000
        000000c0005b53b0:  0000000000000000  0000000000000000
        000000c0005b53c0:  bfe62e42fefa39ef  0000000000000000
        000000c0005b53d0:  0000000000000000  0000000000000000
        000000c0005b53e0:  414fffffe0000000  0000000000000000
        000000c0005b53f0:  0000000000000000  0000000000000000
        000000c0005b5400:  00000000004165a5 <runtime.(*mcache).refill+133>  0000000001597438
        000000c0005b5410:  0000000000000000  000000c000680450
        000000c0005b5420:  000000000040ba47 <runtime.(*mcache).nextFree+135>  00007f424789db28
        000000c0005b5430:  0000000000000007  0000000000000000
        000000c0005b5440:  0000000000000000  000000000158e940
        000000c0005b5450:  000000c0006804f0  000000000040c383 <runtime.mallocgc+1939>
        000000c0005b5460:  00007f424789db28
        fatal error: unknown caller pc

        runtime stack:
        runtime.throw(0xe30510, 0x11)
                /home/mvdan/tip/src/runtime/panic.go:1045 +0x72
        runtime.gentraceback(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xc000070c00, 0x0, 0x0, 0x7fffffff, 0xe4bcc0, 0xc00007bd18, 0x0, ...)
                /home/mvdan/tip/src/runtime/traceback.go:273 +0x19ee
        runtime.copystack(0xc000070c00, 0x2000)
                /home/mvdan/tip/src/runtime/stack.go:888 +0x291
        runtime.newstack()
                /home/mvdan/tip/src/runtime/stack.go:1042 +0x20b
        runtime.morestack()
                /home/mvdan/tip/src/runtime/asm_amd64.s:449 +0x8f

        goroutine 17 [copystack]:
        runtime: unexpected return pc for runtime.(*mheap).alloc called from 0x656c676f6f672f74
        stack: frame={sp:0xc0005b5360, fp:0xc0005b5368} stack=[0xc0005b4000,0xc0005b6000)
        000000c0005b5260:  0000000000000000  0000000000000000
        000000c0005b5270:  0000000000000000  0000000000000000
        000000c0005b5280:  0000000000000000  0000000000000000
        000000c0005b5290:  0000000000000000  0000000000000000
        000000c0005b52a0:  0000000000000000  0000000000000000
        000000c0005b52b0:  0000000000000000  0000000000000000
        000000c0005b52c0:  0000000000000000  0000000000000000
        000000c0005b52d0:  0000000000000000  0000000000000000
        000000c0005b52e0:  0000000000000000  0000000000000000
        000000c0005b52f0:  0000000000000000  0000000000000000
        000000c0005b5300:  0000000000000000  0000000000000000
        000000c0005b5310:  0000000000000000  0000000000000000
        000000c0005b5320:  0000000000000000  0000000000000000
        000000c0005b5330:  0000000000000000  0000000000000000
        000000c0005b5340:  0000000000000000  0000000000000000
        000000c0005b5350:  0000000000000000  0000000000000000
        000000c0005b5360: <656c676f6f672f74 >732d64756f6c632d
        000000c0005b5370:  0000000000000000  0000000000000000
        000000c0005b5380:  0000000000000000  0000000000000000
        000000c0005b5390:  0000000000000000  0000000000000000
        000000c0005b53a0:  0000000000000000  0000000000000000
        000000c0005b53b0:  0000000000000000  0000000000000000
        000000c0005b53c0:  bfe62e42fefa39ef  0000000000000000
        000000c0005b53d0:  0000000000000000  0000000000000000
        000000c0005b53e0:  414fffffe0000000  0000000000000000
        000000c0005b53f0:  0000000000000000  0000000000000000
        000000c0005b5400:  00000000004165a5 <runtime.(*mcache).refill+133>  0000000001597438
        000000c0005b5410:  0000000000000000  000000c000680450
        000000c0005b5420:  000000000040ba47 <runtime.(*mcache).nextFree+135>  00007f424789db28
        000000c0005b5430:  0000000000000007  0000000000000000
        000000c0005b5440:  0000000000000000  000000000158e940
        000000c0005b5450:  000000c0006804f0  000000000040c383 <runtime.mallocgc+1939>
        000000c0005b5460:  00007f424789db28
        runtime.(*mheap).alloc(0x732d64756f6c632d, 0x0, 0x0, 0x0)
                /home/mvdan/tip/src/runtime/mheap.go:1147 +0xe1 fp=0xc0005b5368 sp=0xc0005b5360 pc=0x425501
        created by cmd/compile/internal/gc.compileFunctions
                /home/mvdan/tip/src/cmd/compile/internal/gc/pgen.go:361 +0x128

        goroutine 1 [runnable]:
        cmd/compile/internal/gc.compileFunctions()
                /home/mvdan/tip/src/cmd/compile/internal/gc/pgen.go:369 +0x17c
        cmd/compile/internal/gc.Main(0xe4ae50)
                /home/mvdan/tip/src/cmd/compile/internal/gc/main.go:709 +0x3280
        main.main()
                /home/mvdan/tip/src/cmd/compile/main.go:50 +0xac

        goroutine 18 [runnable]:
        cmd/compile/internal/ssa.liveValues.func1(0xc0005e9e00, 0xc0002bec60)
                /home/mvdan/tip/src/cmd/compile/internal/ssa/deadcode.go:105 +0x70
        cmd/compile/internal/ssa.liveValues(0xc0002bec60, 0xc00001d9c0, 0x37, 0x37, 0xc0000cc6e0, 0x154, 0x154, 0xc0005fc000, 0x36, 0x100)
                /home/mvdan/tip/src/cmd/compile/internal/ssa/deadcode.go:167 +0xfb5
        cmd/compile/internal/ssa.deadcode(0xc0002bec60)
                /home/mvdan/tip/src/cmd/compile/internal/ssa/deadcode.go:215 +0x277
        cmd/compile/internal/ssa.Compile(0xc0002bec60)
                /home/mvdan/tip/src/cmd/compile/internal/ssa/compile.go:92 +0x9a5
        cmd/compile/internal/gc.buildssa(0xc0002be840, 0x1, 0x0)
                /home/mvdan/tip/src/cmd/compile/internal/gc/ssa.go:444 +0xcd8
        cmd/compile/internal/gc.compileSSA(0xc0002be840, 0x1)
                /home/mvdan/tip/src/cmd/compile/internal/gc/pgen.go:298 +0x5d
        cmd/compile/internal/gc.compileFunctions.func2(0xc000580c00, 0xc00054b1d0, 0x1)
                /home/mvdan/tip/src/cmd/compile/internal/gc/pgen.go:363 +0x49
        created by cmd/compile/internal/gc.compileFunctions
                /home/mvdan/tip/src/cmd/compile/internal/gc/pgen.go:361 +0x128

        goroutine 19 [runnable]:
        cmd/compile/internal/gc.(*Progs).settext(0xc0005ee2a0, 0xc0002be6e0)
                /home/mvdan/tip/src/cmd/compile/internal/gc/gsubr.go:173 +0xff
        cmd/compile/internal/gc.newProgs(0xc0002be6e0, 0x2, 0xc0005a6000)
                /home/mvdan/tip/src/cmd/compile/internal/gc/gsubr.go:72 +0x1d0
        cmd/compile/internal/gc.compileSSA(0xc0002be6e0, 0x2)
                /home/mvdan/tip/src/cmd/compile/internal/gc/pgen.go:306 +0x366
        cmd/compile/internal/gc.compileFunctions.func2(0xc000580c00, 0xc00054b1d0, 0x2)
                /home/mvdan/tip/src/cmd/compile/internal/gc/pgen.go:363 +0x49
        created by cmd/compile/internal/gc.compileFunctions
                /home/mvdan/tip/src/cmd/compile/internal/gc/pgen.go:361 +0x128

        goroutine 20 [runnable]:
        cmd/compile/internal/ssa.(*Cache).Reset.func3(0x3e8, 0xc000071001)
                /home/mvdan/tip/src/cmd/compile/internal/ssa/cache.go:55
        sort.Search(0x7d0, 0xc000595d20, 0x0)
                /home/mvdan/tip/src/sort/search.go:66 +0x58
        cmd/compile/internal/ssa.(*Cache).Reset(0xc0004c8818)
                /home/mvdan/tip/src/cmd/compile/internal/ssa/cache.go:55 +0xf8
        cmd/compile/internal/gc.buildssa(0xc0002be2c0, 0x3, 0x0)
                /home/mvdan/tip/src/cmd/compile/internal/gc/ssa.go:316 +0x2f9
        cmd/compile/internal/gc.compileSSA(0xc0002be2c0, 0x3)
                /home/mvdan/tip/src/cmd/compile/internal/gc/pgen.go:298 +0x5d
        cmd/compile/internal/gc.compileFunctions.func2(0xc000580c00, 0xc00054b1d0, 0x3)
                /home/mvdan/tip/src/cmd/compile/internal/gc/pgen.go:363 +0x49
        created by cmd/compile/internal/gc.compileFunctions
                /home/mvdan/tip/src/cmd/compile/internal/gc/pgen.go:361 +0x128
FAIL
exit status 1
FAIL    gioui.org/cmd/gogio     4.713s
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