go: internal/poll: crash setting file completion modes on Windows

Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

1.9 , 1.9.1

Does this issue reproduce with the latest release?

yes It works with go 1.8.x in windows 10(64) Versions 1.8.x and 1.9.x work with linux glibc2.22 (leap42.2)

What operating system and processor architecture are you using (go env)?

set GOARCH=amd64 set GOBIN= set GOEXE=.exe set GOHOSTARCH=amd64 set GOHOSTOS=windows set GOOS=windows set GOPATH=C:\Users\MZ\go set GORACE= set GOROOT=C:\Go set GOTOOLDIR=C:\Go\pkg\tool\windows_amd64 set GCCGO=gccgo set CC=gcc set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0 set CXX=g++ set CGO_ENABLED=1 set PKG_CONFIG=pkg-config set CGO_CFLAGS=-g -O2 set CGO_CPPFLAGS= set CGO_CXXFLAGS=-g -O2 set CGO_FFLAGS=-g -O2 set CGO_LDFLAGS=-g -O2

What did you do?

compile , run and send a http request

// TestFileServer project main.go package main

import ( “net/http” )

func main() { http.ListenAndServe(“:8080”, http.FileServer(http.Dir(“/temp”))) }

If possible, provide a recipe for reproducing the error. A complete runnable program is good. A link on play.golang.org is best.

What did you expect to see?

Directory structure or file contents

What did you see instead?

Exception 0xc0000096 0x0 0x0 0x18000890b PC=0x18000890b

syscall.Syscall(0x7ffce74bbfd0, 0x2, 0x104890, 0x2, 0x0, 0x1e0, 0x66aa20, 0x1) c:/go/src/runtime/syscall_windows.go:163 +0x69 syscall.SetFileCompletionNotificationModes(0x104890, 0x2, 0x69ae71, 0x3) c:/go/src/syscall/zsyscall_windows.go:1727 +0x6f internal/poll.(*FD).Init(0xc042126000, 0x69ae62, 0x3, 0x6ae780, 0x0, 0x0, 0x64) c:/go/src/internal/poll/fd_windows.go:346 +0xf9 os.newFile(0x104890, 0xc04200e0d0, 0x5, 0x69ae62, 0x3, 0x0) c:/go/src/os/file_windows.go:57 +0x138 os.openDir(0xc04200e0d0, 0x5, 0x0, 0xc000000000, 0x0) c:/go/src/os/file_windows.go:145 +0x2d5 os.OpenFile(0xc04200e0d0, 0x5, 0x0, 0x0, 0x2, 0xc04200e0d0, 0x5) c:/go/src/os/file_windows.go:163 +0x198 os.Open(0xc04200e0d0, 0x5, 0x2, 0xc04200e0d0, 0x5) c:/go/src/os/file.go:238 +0x4d net/http.Dir.Open(0x69b166, 0x5, 0xc04200e074, 0x1, 0x0, 0xc042025ba8, 0x402359, 0xc042025bd0) c:/go/src/net/http/fs.go:75 +0x18a net/http.(*Dir).Open(0x6cc120, 0xc04200e074, 0x1, 0x0, 0xc042025bf8, 0x4cac74, 0xc042084d80) <autogenerated>:1 +0x64 net/http.serveFile(0x7c48e0, 0xc042104000, 0xc0420fa000, 0x7c1a60, 0x6cc120, 0xc04200e074, 0x1, 0xc042025c01) c:/go/src/net/http/fs.go:555 +0xbc net/http.(*fileHandler).ServeHTTP(0xc0420449e0, 0x7c48e0, 0xc042104000, 0xc0420fa000) c:/go/src/net/http/fs.go:719 +0xb1 net/http.serverHandler.ServeHTTP(0xc042050a90, 0x7c48e0, 0xc042104000, 0xc0420fa000) c:/go/src/net/http/server.go:2619 +0xbb net/http.(*conn).serve(0xc042052820, 0x7c4ce0, 0xc042036080) c:/go/src/net/http/server.go:1801 +0x724 created by net/http.(*Server).Serve c:/go/src/net/http/server.go:2720 +0x28f

goroutine 1 [IO wait]: internal/poll.runtime_pollWait(0x12c4f70, 0x72, 0xc042084b58) c:/go/src/runtime/netpoll.go:173 +0x5e internal/poll.(*pollDesc).wait(0xc042084c98, 0x72, 0x7bf300, 0x0, 0x0) c:/go/src/internal/poll/fd_poll_runtime.go:85 +0xb5 internal/poll.(*ioSrv).ExecIO(0x7f5c38, 0xc042084b58, 0xc042152000, 0x17, 0x1, 0x0) c:/go/src/internal/poll/fd_windows.go:195 +0x13a internal/poll.(*FD).acceptOne(0xc042084b40, 0x2bc, 0xc04214a000, 0x2, 0x2, 0xc042084b58, 0xc042077c78, 0xc042077c08, 0x410e0f, 0x10) c:/go/src/internal/poll/fd_windows.go:748 +0xae internal/poll.(*FD).Accept(0xc042084b40, 0xc042148000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, …) c:/go/src/internal/poll/fd_windows.go:782 +0x171 net.(*netFD).accept(0xc042084b40, 0x6aebc8, 0xc042077d90, 0x40245b) c:/go/src/net/fd_windows.go:192 +0x88 net.(*TCPListener).accept(0xc04207a020, 0x648380, 0xc042077dc0, 0x40112e) c:/go/src/net/tcpsock_posix.go:136 +0x35 net.(*TCPListener).AcceptTCP(0xc04207a020, 0xc042077e08, 0xc042077e10, 0xc042077e00) c:/go/src/net/tcpsock.go:234 +0x50 net/http.tcpKeepAliveListener.Accept(0xc04207a020, 0x6ae5a8, 0xc04213c000, 0x7c4da0, 0xc04206e960) c:/go/src/net/http/server.go:3120 +0x36 net/http.(*Server).Serve(0xc042050a90, 0x7c4960, 0xc04207a020, 0x0, 0x0) c:/go/src/net/http/server.go:2695 +0x1b9 net/http.(*Server).ListenAndServe(0xc042050a90, 0xc042050a90, 0x404401) c:/go/src/net/http/server.go:2636 +0xb0 net/http.ListenAndServe(0x69b175, 0x5, 0x7c0e60, 0xc0420449e0, 0x0, 0xc042077f70) c:/go/src/net/http/server.go:2882 +0x86 main.main() C:/Users/MZ/Documents/Go/projects/src/TestFileServer/main.go:10 +0x8a

goroutine 4 [IO wait]: internal/poll.runtime_pollWait(0x12c4eb0, 0x72, 0x0) c:/go/src/runtime/netpoll.go:173 +0x5e internal/poll.(*pollDesc).wait(0xc042084ed8, 0x72, 0x7bf300, 0x0, 0x0) c:/go/src/internal/poll/fd_poll_runtime.go:85 +0xb5 internal/poll.(*ioSrv).ExecIO(0x7f5c38, 0xc042084d98, 0x6ae3e0, 0x0, 0x0, 0x0) c:/go/src/internal/poll/fd_windows.go:195 +0x13a internal/poll.(*FD).Read(0xc042084d80, 0xc0420f2071, 0x1, 0x1, 0x0, 0x0, 0x0) c:/go/src/internal/poll/fd_windows.go:439 +0x266 net.(*netFD).Read(0xc042084d80, 0xc0420f2071, 0x1, 0x1, 0x0, 0x0, 0x0) c:/go/src/net/fd_windows.go:151 +0x59 net.(*conn).Read(0xc04207a030, 0xc0420f2071, 0x1, 0x1, 0x0, 0x0, 0x0) c:/go/src/net/net.go:176 +0x74 net/http.(*connReader).backgroundRead(0xc0420f2060) c:/go/src/net/http/server.go:660 +0x69 created by net/http.(*connReader).startBackgroundRead c:/go/src/net/http/server.go:656 +0xdf

goroutine 33 [IO wait]: internal/poll.runtime_pollWait(0x12c4df0, 0x72, 0x0) c:/go/src/runtime/netpoll.go:173 +0x5e internal/poll.(*pollDesc).wait(0xc0420f8158, 0x72, 0x7bf300, 0x0, 0x0) c:/go/src/internal/poll/fd_poll_runtime.go:85 +0xb5 internal/poll.(*ioSrv).ExecIO(0x7f5c38, 0xc0420f8018, 0x6ae3e0, 0x410681, 0xc04212a100, 0x40) c:/go/src/internal/poll/fd_windows.go:195 +0x13a internal/poll.(*FD).Read(0xc0420f8000, 0xc04212e000, 0x1000, 0x1000, 0x0, 0x0, 0x0) c:/go/src/internal/poll/fd_windows.go:439 +0x266 net.(*netFD).Read(0xc0420f8000, 0xc04212e000, 0x1000, 0x1000, 0xc0421098c8, 0x5e0fe2, 0x6741a0) c:/go/src/net/fd_windows.go:151 +0x59 net.(*conn).Read(0xc042114000, 0xc04212e000, 0x1000, 0x1000, 0x0, 0x0, 0x0) c:/go/src/net/net.go:176 +0x74 net/http.(*connReader).Read(0xc0421120c0, 0xc04212e000, 0x1000, 0x1000, 0x0, 0x0, 0x0) c:/go/src/net/http/server.go:753 +0x10c bufio.(*Reader).fill(0xc04212c000) c:/go/src/bufio/bufio.go:97 +0x121 bufio.(*Reader).ReadSlice(0xc04212c000, 0xc042109a0a, 0x4101cd, 0x3bb05f0, 0x0, 0xc042109ab8, 0x410681) c:/go/src/bufio/bufio.go:338 +0x33 bufio.(*Reader).ReadLine(0xc04212c000, 0x100, 0xf8, 0x6911a0, 0x1, 0x12200007f8060, 0xf8) c:/go/src/bufio/bufio.go:367 +0x3b net/textproto.(*Reader).readLineSlice(0xc0421120f0, 0xc042109b20, 0xc042109b20, 0x410e0f, 0x100, 0x6911a0) c:/go/src/net/textproto/reader.go:55 +0x77 net/textproto.(*Reader).ReadLine(0xc0421120f0, 0xc042130000, 0x0, 0xc042109b90, 0x4cb4d9) c:/go/src/net/textproto/reader.go:36 +0x32 net/http.readRequest(0xc04212c000, 0x0, 0xc042130000, 0x0, 0x0) c:/go/src/net/http/request.go:925 +0xa0 net/http.(*conn).readRequest(0xc042118000, 0x7c4ce0, 0xc04212a040, 0x0, 0x0, 0x0) c:/go/src/net/http/server.go:933 +0x183 net/http.(*conn).serve(0xc042118000, 0x7c4ce0, 0xc04212a040) c:/go/src/net/http/server.go:1739 +0x515 created by net/http.(*Server).Serve c:/go/src/net/http/server.go:2720 +0x28f

goroutine 49 [IO wait]: internal/poll.runtime_pollWait(0x12c4d30, 0x72, 0x0) c:/go/src/runtime/netpoll.go:173 +0x5e internal/poll.(*pollDesc).wait(0xc042132158, 0x72, 0x7bf300, 0x0, 0x0) c:/go/src/internal/poll/fd_poll_runtime.go:85 +0xb5 internal/poll.(*ioSrv).ExecIO(0x7f5c38, 0xc042132018, 0x6ae3e0, 0x410681, 0xc04212a240, 0x40) c:/go/src/internal/poll/fd_windows.go:195 +0x13a internal/poll.(*FD).Read(0xc042132000, 0xc042150000, 0x1000, 0x1000, 0x0, 0x0, 0x0) c:/go/src/internal/poll/fd_windows.go:439 +0x266 net.(*netFD).Read(0xc042132000, 0xc042150000, 0x1000, 0x1000, 0xc0421458c8, 0x5e0fe2, 0x6741a0) c:/go/src/net/fd_windows.go:151 +0x59 net.(*conn).Read(0xc042138000, 0xc042150000, 0x1000, 0x1000, 0x0, 0x0, 0x0) c:/go/src/net/net.go:176 +0x74 net/http.(*connReader).Read(0xc042112180, 0xc042150000, 0x1000, 0x1000, 0x0, 0x0, 0x0) c:/go/src/net/http/server.go:753 +0x10c bufio.(*Reader).fill(0xc04212c060) c:/go/src/bufio/bufio.go:97 +0x121 bufio.(*Reader).ReadSlice(0xc04212c060, 0xa, 0x0, 0x0, 0x0, 0xc042145ab8, 0x410681) c:/go/src/bufio/bufio.go:338 +0x33 bufio.(*Reader).ReadLine(0xc04212c060, 0x100, 0xf8, 0x6911a0, 0x4, 0x22004202a380, 0xf8) c:/go/src/bufio/bufio.go:367 +0x3b net/textproto.(*Reader).readLineSlice(0xc0421121b0, 0xc042145b20, 0xc042145b20, 0x410e0f, 0x100, 0x6911a0) c:/go/src/net/textproto/reader.go:55 +0x77 net/textproto.(*Reader).ReadLine(0xc0421121b0, 0xc042130100, 0x0, 0xc042145b90, 0x4cb4d9) c:/go/src/net/textproto/reader.go:36 +0x32 net/http.readRequest(0xc04212c060, 0x0, 0xc042130100, 0x0, 0x0) c:/go/src/net/http/request.go:925 +0xa0 net/http.(*conn).readRequest(0xc04213c000, 0x7c4ce0, 0xc04212a180, 0x0, 0x0, 0x0) c:/go/src/net/http/server.go:933 +0x183 net/http.(*conn).serve(0xc04213c000, 0x7c4ce0, 0xc04212a180) c:/go/src/net/http/server.go:1739 +0x515 created by net/http.(*Server).Serve c:/go/src/net/http/server.go:2720 +0x28f rax 0x0 rbx 0xc04202aa40 rcx 0x104890 rdi 0x3ca000 rsi 0xc0420257f0 rbp 0xc0420257a0 rsp 0x1a0fda0 r8 0x1 r9 0x104890 r10 0x1f r11 0xbff50 r12 0x0 r13 0xfa r14 0xfa r15 0xa rip 0x18000890b rflags 0x10246 cs 0x33 fs 0x53 gs 0x2b