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syscall/unix.Write never returns when Stdout is closed #62199

Closed andig closed 11 months ago

andig commented 1 year ago

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

$ go version
go version go1.21.0 darwin/arm64

Does this issue reproduce with the latest release?

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

go env Output
$ go env
GO111MODULE=''
GOARCH='arm64'
GOBIN=''
GOCACHE='/Users/andig/Library/Caches/go-build'
GOENV='/Users/andig/Library/Application Support/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='arm64'
GOHOSTOS='darwin'
GOINSECURE=''
GOMODCACHE='/Users/andig/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='darwin'
GOPATH='/Users/andig/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/opt/homebrew/Cellar/go/1.21.0/libexec'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/opt/homebrew/Cellar/go/1.21.0/libexec/pkg/tool/darwin_arm64'
GOVCS=''
GOVERSION='go1.21.0'
GCCGO='gccgo'
AR='ar'
CC='cc'
CXX='c++'
CGO_ENABLED='1'
GOMOD='/Users/andig/htdocs/evcc/go.mod'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -arch arm64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -ffile-prefix-map=/var/folders/sv/rs_453y57xj86xsbz3kw1mbc0000gn/T/go-build415816602=/tmp/go-build -gno-record-gcc-switches -fno-common'
GOROOT/bin/go version: go version go1.21.0 darwin/arm64
GOROOT/bin/go tool compile -V: compile version go1.21.0
uname -v: Darwin Kernel Version 22.5.0: Thu Jun  8 22:22:19 PDT 2023; root:xnu-8796.121.3~7/RELEASE_ARM64_T8103
ProductName:        macOS
ProductVersion:     13.4.1
ProductVersionExtra:    (c)
BuildVersion:       22F770820d
lldb --version: lldb-1403.0.17.67
Apple Swift version 5.8.1 (swiftlang-5.8.0.124.5 clang-1403.0.22.11.100)

Note go env output is not from Docker host.

What did you do?

  1. Run a go application in Docker on Synology NAS/amd64.
  2. Look at the logs: docker logs | more
  3. Ctrl-C the command (or really use any means to interrupt the Docker daemon sending more output)

What did you expect to see?

Application continues running and serving requests.

What did you see instead?

Application gets stuck. I've noticed this behavior with various Docker applications, usually leading to the docker host no longer serving requests either while the applications themselves are still functional.

This issue however is not about the Docker process, but about the Go runtime's behaviour:

pprof Output
goroutine 89587 [running]:
runtime/pprof.writeGoroutineStacks({0x2fe1460, 0xc0006aa0e0})
    runtime/pprof/pprof.go:703 +0x6a
runtime/pprof.writeGoroutine({0x2fe1460?, 0xc0006aa0e0?}, 0x45718f?)
    runtime/pprof/pprof.go:692 +0x25
runtime/pprof.(*Profile).WriteTo(0x24aa6a0?, {0x2fe1460?, 0xc0006aa0e0?}, 0xc?)
    runtime/pprof/pprof.go:329 +0x146
net/http/pprof.handler.ServeHTTP({0xc0012dc2b1, 0x9}, {0x30dc730, 0xc0006aa0e0}, 0x2fe01a0?)
    net/http/pprof/pprof.go:267 +0x4a8
net/http/pprof.Index({0x30dc730?, 0xc0006aa0e0}, 0xc0015b1e00?)
    net/http/pprof/pprof.go:384 +0xe5
net/http.HandlerFunc.ServeHTTP(0xc000d72000?, {0x30dc730?, 0xc0006aa0e0?}, 0x26562c0?)
    net/http/server.go:2136 +0x29
net/http.(*ServeMux).ServeHTTP(0xc0015b1c00?, {0x30dc730, 0xc0006aa0e0}, 0xc0015b1e00)
    net/http/server.go:2514 +0x142
github.com/gorilla/mux.(*Router).ServeHTTP(0xc000c1e180, {0x30dc730, 0xc0006aa0e0}, 0xc0015b1b00)
    github.com/gorilla/mux@v1.8.0/mux.go:210 +0x1c5
net/http.serverHandler.ServeHTTP({0xc0007c0540?}, {0x30dc730?, 0xc0006aa0e0?}, 0x6?)
    net/http/server.go:2938 +0x8e
net/http.(*conn).serve(0xc000dfa120, {0x30e3c40, 0xc000b99470})
    net/http/server.go:2009 +0x5f4
created by net/http.(*Server).Serve in goroutine 1
    net/http/server.go:3086 +0x5cb

goroutine 1 [IO wait]:
internal/poll.runtime_pollWait(0x7fb2fe124150, 0x72)
    runtime/netpoll.go:343 +0x85
internal/poll.(*pollDesc).wait(0xc0001ff480?, 0x4?, 0x0)
    internal/poll/fd_poll_runtime.go:84 +0x27
internal/poll.(*pollDesc).waitRead(...)
    internal/poll/fd_poll_runtime.go:89
internal/poll.(*FD).Accept(0xc0001ff480)
    internal/poll/fd_unix.go:611 +0x2ac
net.(*netFD).accept(0xc0001ff480)
    net/fd_unix.go:172 +0x29
net.(*TCPListener).accept(0xc00073f6c0)
    net/tcpsock_posix.go:152 +0x1e
net.(*TCPListener).Accept(0xc00073f6c0)
    net/tcpsock.go:315 +0x30
net/http.(*Server).Serve(0xc000570000, {0x30dc460, 0xc00073f6c0})
    net/http/server.go:3056 +0x364
net/http.(*Server).ListenAndServe(0xc000570000)
    net/http/server.go:2985 +0x71
github.com/evcc-io/evcc/cmd.runRoot(0xc0000fed00?, {0x26ea49c?, 0x7?, 0x26ddb91?})
    github.com/evcc-io/evcc/cmd/root.go:307 +0x17d6
github.com/spf13/cobra.(*Command).execute(0x4d1f860, {0xc000050730, 0x2, 0x2})
    github.com/spf13/cobra@v1.7.0/command.go:944 +0x863
github.com/spf13/cobra.(*Command).ExecuteC(0x4d1f860)
    github.com/spf13/cobra@v1.7.0/command.go:1068 +0x3a5
github.com/spf13/cobra.(*Command).Execute(...)
    github.com/spf13/cobra@v1.7.0/command.go:992
github.com/evcc-io/evcc/cmd.Execute()
    github.com/evcc-io/evcc/cmd/root.go:110 +0x1a
main.main()
    github.com/evcc-io/evcc/main.go:45 +0x2d

goroutine 20 [chan receive, 516 minutes]:
github.com/evcc-io/evcc/util/pipe.(*Dropper).pipe(0xc0004af368, 0x0?, 0xc0004c8180?)
    github.com/evcc-io/evcc/util/pipe/limiter.go:116 +0x58
created by github.com/evcc-io/evcc/util/pipe.(*Dropper).Pipe in goroutine 1
    github.com/evcc-io/evcc/util/pipe/limiter.go:128 +0x90

goroutine 21 [chan receive, 516 minutes]:
github.com/evcc-io/evcc/util.(*Cache).Run(0x12c?, 0xe?)
    github.com/evcc-io/evcc/util/cache.go:35 +0x6a
created by github.com/evcc-io/evcc/cmd.runRoot in goroutine 1
    github.com/evcc-io/evcc/cmd/root.go:140 +0x43d

goroutine 25 [chan receive, 516 minutes]:
github.com/evcc-io/evcc/util/pipe.(*Dropper).pipe(0xc0004af5d8, 0x0?, 0xc0004c8d80?)
    github.com/evcc-io/evcc/util/pipe/limiter.go:116 +0x58
created by github.com/evcc-io/evcc/util/pipe.(*Dropper).Pipe in goroutine 1
    github.com/evcc-io/evcc/util/pipe/limiter.go:128 +0x90

goroutine 26 [select, 28 minutes]:
github.com/evcc-io/evcc/server.(*SocketHub).Run(0xc000c284b0, 0xc0004e17a0, 0x0?)
    github.com/evcc-io/evcc/server/socket.go:159 +0xb4
created by github.com/evcc-io/evcc/cmd.runRoot in goroutine 1
    github.com/evcc-io/evcc/cmd/root.go:157 +0x75f

goroutine 27 [chan receive, 516 minutes]:
github.com/evcc-io/evcc/util.(*Tee).Run(0xc00051e880, 0x0?)
    github.com/evcc-io/evcc/util/tee.go:37 +0x54
created by github.com/evcc-io/evcc/cmd.runRoot in goroutine 1
    github.com/evcc-io/evcc/cmd/root.go:161 +0x7d3

goroutine 28 [select, 747 minutes]:
google.golang.org/grpc/internal/grpcsync.(*CallbackSerializer).run(0xc00007f8c0, {0x30e3c78, 0xc000c2c730})
    google.golang.org/grpc@v1.56.0/internal/grpcsync/callback_serializer.go:83 +0x112
created by google.golang.org/grpc/internal/grpcsync.NewCallbackSerializer in goroutine 1
    google.golang.org/grpc@v1.56.0/internal/grpcsync/callback_serializer.go:55 +0x129

goroutine 29 [select, 747 minutes]:
google.golang.org/grpc/internal/grpcsync.(*CallbackSerializer).run(0xc00007f960, {0x30e3c78, 0xc000c2c780})
    google.golang.org/grpc@v1.56.0/internal/grpcsync/callback_serializer.go:83 +0x112
created by google.golang.org/grpc/internal/grpcsync.NewCallbackSerializer in goroutine 1
    google.golang.org/grpc@v1.56.0/internal/grpcsync/callback_serializer.go:55 +0x129

goroutine 165 [chan receive, 516 minutes]:
github.com/evcc-io/evcc/util/pipe.(*Dropper).pipe(0xc000b05830, 0x0?, 0x0?)
    github.com/evcc-io/evcc/util/pipe/limiter.go:116 +0x58
created by github.com/evcc-io/evcc/util/pipe.(*Dropper).Pipe in goroutine 1
    github.com/evcc-io/evcc/util/pipe/limiter.go:128 +0x90

goroutine 33 [select, 747 minutes]:
database/sql.(*DB).connectionOpener(0xc000d2ab60, {0x30e3c78, 0xc000fe7810})
    database/sql/sql.go:1218 +0x87
created by database/sql.OpenDB in goroutine 1
    database/sql/sql.go:791 +0x165

goroutine 34 [semacquire, 508 minutes]:
internal/poll.runtime_Semacquire(0xc00146f798?)
    runtime/sema.go:67 +0x25
internal/poll.(*fdMutex).rwlock(0xc000052180, 0x35?)
    internal/poll/fd_mutex.go:154 +0xc5
internal/poll.(*FD).writeLock(...)
    internal/poll/fd_mutex.go:239
internal/poll.(*FD).Write(0xc000052180, {0xc0004a2a80, 0x310, 0x380})
    internal/poll/fd_unix.go:367 +0x65
os.(*File).write(...)
    os/file_posix.go:46
os.(*File).Write(0xc000070048, {0xc0004a2a80?, 0x310, 0xc00146f938?})
    os/file.go:183 +0x51
github.com/evcc-io/evcc/util.(*Redactor).Write(0xc00086cf20, {0xc0004a2a80?, 0x23?, 0x40?})
    github.com/evcc-io/evcc/util/redactor.go:43 +0x1ae
io.(*multiWriter).Write(0xc0004e7980?, {0xc0004a2a80, 0x310, 0x380})
    io/multi.go:85 +0x6d
log.(*Logger).output(0xc000d262a0, 0x0, 0x0?, 0xc00146fbc8)
    log/log.go:245 +0x485
log.(*Logger).Println(0xc0004a2700?, {0xc00146fc28?, 0x7fb344cb55b8?, 0x18?})
    log/log.go:276 +0x4b
github.com/evcc-io/evcc/server/db.(*Logger).Trace(0xc000070c28, {0x21c9060?, 0xc0018c6330?}, {0x0?, 0x22bb160?, 0xc00091eb40?}, 0x10?, {0x0?, 0x0})
    github.com/evcc-io/evcc/server/db/log.go:33 +0xc5
gorm.io/gorm.(*processor).Execute(0xc000fe7630, 0x271b745?)
    gorm.io/gorm@v1.25.1/callbacks.go:134 +0x438
gorm.io/gorm.(*DB).Save(0xc000725b80?, {0x21c9060?, 0xc0018c6330})
    gorm.io/gorm@v1.25.1/finisher_api.go:89 +0x2f5
github.com/evcc-io/evcc/server/db/settings.Persist()
    github.com/evcc-io/evcc/server/db/settings/setting.go:41 +0x5f
github.com/evcc-io/evcc/cmd.configureDatabase.func1()
    github.com/evcc-io/evcc/cmd/setup.go:407 +0x13
github.com/evcc-io/evcc/cmd.configureDatabase.func2()
    github.com/evcc-io/evcc/cmd/setup.go:418 +0x58
created by github.com/evcc-io/evcc/cmd.configureDatabase in goroutine 1
    github.com/evcc-io/evcc/cmd/setup.go:416 +0x6b

goroutine 39 [select]:
github.com/eclipse/paho%2emqtt%2egolang.keepalive(0xc000d3c000, {0x2fe0ac0, 0xc000070f70})
    github.com/eclipse/paho.mqtt.golang@v1.4.2/ping.go:48 +0x1d8
created by github.com/eclipse/paho%2emqtt%2egolang.(*client).startCommsWorkers in goroutine 35
    github.com/eclipse/paho.mqtt.golang@v1.4.2/client.go:593 +0x33b

goroutine 40 [select, 747 minutes]:
github.com/eclipse/paho%2emqtt%2egolang.(*router).matchAndDispatch.func1()
    github.com/eclipse/paho.mqtt.golang@v1.4.2/router.go:153 +0xbf
created by github.com/eclipse/paho%2emqtt%2egolang.(*router).matchAndDispatch in goroutine 35
    github.com/eclipse/paho.mqtt.golang@v1.4.2/router.go:151 +0x12e

goroutine 41 [chan receive, 747 minutes]:
github.com/eclipse/paho%2emqtt%2egolang.(*router).matchAndDispatch.func2()
    github.com/eclipse/paho.mqtt.golang@v1.4.2/router.go:174 +0xb2
created by github.com/eclipse/paho%2emqtt%2egolang.(*router).matchAndDispatch in goroutine 35
    github.com/eclipse/paho.mqtt.golang@v1.4.2/router.go:173 +0x21c

goroutine 65 [sync.Mutex.Lock, 514 minutes]:
sync.runtime_SemacquireMutex(0x41bdeb?, 0x68?, 0x4d521c0?)
    runtime/sema.go:77 +0x25
sync.(*Mutex).lockSlow(0xc000940a00)
    sync/mutex.go:171 +0x15d
sync.(*Mutex).Lock(...)
    sync/mutex.go:90
github.com/evcc-io/evcc/provider.(*cached[...]).Get(0x30e8e80)
    github.com/evcc-io/evcc/provider/cache.go:70 +0x89
github.com/evcc-io/evcc/charger.(*OpenWBPro).heartbeat(0xc001426540, 0xc000ad86c0)
    github.com/evcc-io/evcc/charger/openwb-pro.go:69 +0xca
created by github.com/evcc-io/evcc/charger.NewOpenWBPro in goroutine 51
    github.com/evcc-io/evcc/charger/openwb-pro.go:62 +0x357

goroutine 43 [select, 516 minutes]:
github.com/eclipse/paho%2emqtt%2egolang.(*client).startCommsWorkers.func1()
    github.com/eclipse/paho.mqtt.golang@v1.4.2/client.go:628 +0x178
created by github.com/eclipse/paho%2emqtt%2egolang.(*client).startCommsWorkers in goroutine 35
    github.com/eclipse/paho.mqtt.golang@v1.4.2/client.go:625 +0x6c5

goroutine 44 [IO wait]:
internal/poll.runtime_pollWait(0x7fb2fe124cf0, 0x72)
    runtime/netpoll.go:343 +0x85
internal/poll.(*pollDesc).wait(0xc00085c100?, 0xc0018c0ed1?, 0x0)
    internal/poll/fd_poll_runtime.go:84 +0x27
internal/poll.(*pollDesc).waitRead(...)
    internal/poll/fd_poll_runtime.go:89
internal/poll.(*FD).Read(0xc00085c100, {0xc0018c0ed1, 0x1, 0x1})
    internal/poll/fd_unix.go:164 +0x27a
net.(*netFD).Read(0xc00085c100, {0xc0018c0ed1?, 0x23c81c0?, 0x7fb344cb55b8?})
    net/fd_posix.go:55 +0x25
net.(*conn).Read(0xc000070f70, {0xc0018c0ed1?, 0xc0012fffb0?, 0x7fb344cb55b8?})
    net/net.go:179 +0x45
io.ReadAtLeast({0x2fe09e0, 0xc000070f70}, {0xc0018c0ed1, 0x1, 0x1}, 0x1)
    io/io.go:335 +0x90
io.ReadFull(...)
    io/io.go:354
github.com/eclipse/paho.mqtt.golang/packets.ReadPacket({0x2fe09e0, 0xc000070f70})
    github.com/eclipse/paho.mqtt.golang@v1.4.2/packets/packets.go:131 +0x59
github.com/eclipse/paho%2emqtt%2egolang.startIncoming.func1()
    github.com/eclipse/paho.mqtt.golang@v1.4.2/net.go:124 +0xdf
created by github.com/eclipse/paho%2emqtt%2egolang.startIncoming in goroutine 35
    github.com/eclipse/paho.mqtt.golang@v1.4.2/net.go:122 +0x147

goroutine 45 [select]:
github.com/eclipse/paho%2emqtt%2egolang.startIncomingComms.func1()
    github.com/eclipse/paho.mqtt.golang@v1.4.2/net.go:175 +0x185
created by github.com/eclipse/paho%2emqtt%2egolang.startIncomingComms in goroutine 35
    github.com/eclipse/paho.mqtt.golang@v1.4.2/net.go:164 +0x1b0

goroutine 46 [select, 516 minutes]:
github.com/eclipse/paho%2emqtt%2egolang.startOutgoingComms.func1()
    github.com/eclipse/paho.mqtt.golang@v1.4.2/net.go:277 +0x1d7
created by github.com/eclipse/paho%2emqtt%2egolang.startOutgoingComms in goroutine 35
    github.com/eclipse/paho.mqtt.golang@v1.4.2/net.go:264 +0x245

goroutine 47 [chan receive, 747 minutes]:
github.com/eclipse/paho%2emqtt%2egolang.startComms.func1()
    github.com/eclipse/paho.mqtt.golang@v1.4.2/net.go:407 +0x65
created by github.com/eclipse/paho%2emqtt%2egolang.startComms in goroutine 35
    github.com/eclipse/paho.mqtt.golang@v1.4.2/net.go:406 +0x1fd

goroutine 48 [chan receive, 747 minutes]:
github.com/eclipse/paho%2emqtt%2egolang.startComms.func2()
    github.com/eclipse/paho.mqtt.golang@v1.4.2/net.go:430 +0x69
created by github.com/eclipse/paho%2emqtt%2egolang.startComms in goroutine 35
    github.com/eclipse/paho.mqtt.golang@v1.4.2/net.go:429 +0x265

goroutine 49 [semacquire, 747 minutes]:
sync.runtime_Semacquire(0x0?)
    runtime/sema.go:62 +0x25
sync.(*WaitGroup).Wait(0xc000880000?)
    sync/waitgroup.go:116 +0x48
github.com/eclipse/paho%2emqtt%2egolang.startComms.func3()
    github.com/eclipse/paho.mqtt.golang@v1.4.2/net.go:438 +0x25
created by github.com/eclipse/paho%2emqtt%2egolang.startComms in goroutine 35
    github.com/eclipse/paho.mqtt.golang@v1.4.2/net.go:437 +0x2b9

goroutine 50 [select, 747 minutes]:
github.com/eclipse/paho%2emqtt%2egolang.(*client).startCommsWorkers.func2()
    github.com/eclipse/paho.mqtt.golang@v1.4.2/client.go:663 +0xed
created by github.com/eclipse/paho%2emqtt%2egolang.(*client).startCommsWorkers in goroutine 35
    github.com/eclipse/paho.mqtt.golang@v1.4.2/client.go:658 +0x83e

goroutine 183 [semacquire, 508 minutes]:
internal/poll.runtime_Semacquire(0x33003000000000f0?)
    runtime/sema.go:67 +0x25
internal/poll.(*fdMutex).rwlock(0xc000052180, 0x8f?)
    internal/poll/fd_mutex.go:154 +0xc5
internal/poll.(*FD).writeLock(...)
    internal/poll/fd_mutex.go:239
internal/poll.(*FD).Write(0xc000052180, {0xc000949f20, 0x5c, 0x60})
    internal/poll/fd_unix.go:367 +0x65
os.(*File).write(...)
    os/file_posix.go:46
os.(*File).Write(0xc000070048, {0xc000949f20?, 0x5c, 0x5c?})
    os/file.go:183 +0x51
github.com/evcc-io/evcc/util.(*Redactor).Write(0xc000a25ee0, {0xc000b22180?, 0x26df9de?, 0x5?})
    github.com/evcc-io/evcc/util/redactor.go:43 +0x1ae
io.(*multiWriter).Write(0xc000869080?, {0xc000b22180, 0x5e, 0x80})
    io/multi.go:85 +0x6d
log.(*Logger).output(0xc000fcfc20, 0x0, 0x412f05?, 0xc0000835e8)
    log/log.go:245 +0x485
log.(*Logger).Printf(...)
    log/log.go:268
github.com/evcc-io/evcc/util/request.(*roundTripper).RoundTrip(0xc0012db938, 0xc0018a5a00)
    github.com/evcc-io/evcc/util/request/roundtrip.go:93 +0x15a
net/http.send(0xc0018a5900, {0x2fe0200, 0xc0012db938}, {0x1?, 0x49e0b4?, 0x4d521c0?})
    net/http/client.go:260 +0x606
net/http.(*Client).send(0xc000fcfe90, 0xc0018a5900, {0xf8?, 0x265d200?, 0x4d521c0?})
    net/http/client.go:181 +0x98
net/http.(*Client).do(0xc000fcfe90, 0xc0018a5900)
    net/http/client.go:724 +0x912
net/http.(*Client).Do(...)
    net/http/client.go:590
github.com/evcc-io/evcc/util/request.(*Helper).DoJSON(0xc0012fce08, 0x47?, {0x21c2980, 0xc000f5f7f0})
    github.com/evcc-io/evcc/util/request/helper.go:68 +0x94
github.com/evcc-io/evcc/util/request.(*Helper).GetJSON(0xc0012fcbd8?, {0xc000e34e40, 0x36}, {0x2187700, 0xc000c1e480})
    github.com/evcc-io/evcc/util/request/helper.go:81 +0xe5
github.com/evcc-io/evcc/tariff.(*GrünStromIndex).run.func1()
    github.com/evcc-io/evcc/tariff/gruenstromindex.go:100 +0x2a
github.com/cenkalti/backoff/v4.RetryNotifyWithTimer.Operation.withEmptyData.func1()
    github.com/cenkalti/backoff/v4@v4.2.1/retry.go:18 +0x13
github.com/cenkalti/backoff/v4.doRetryNotify[...](0xc000083d38?, {0x2feed20, 0xc000e085a0}, 0x0, {0x0, 0x0?})
    github.com/cenkalti/backoff/v4@v4.2.1/retry.go:88 +0x13c
github.com/cenkalti/backoff/v4.RetryNotifyWithTimer(0x34630b8a000?, {0x2feed20?, 0xc000e085a0?}, 0x1?, {0x0?, 0x0?})
    github.com/cenkalti/backoff/v4@v4.2.1/retry.go:61 +0x5c
github.com/cenkalti/backoff/v4.RetryNotify(...)
    github.com/cenkalti/backoff/v4@v4.2.1/retry.go:49
github.com/cenkalti/backoff/v4.Retry(...)
    github.com/cenkalti/backoff/v4@v4.2.1/retry.go:38
github.com/evcc-io/evcc/tariff.(*GrünStromIndex).run(0xc000fe6d70, 0xc0011d4120)
    github.com/evcc-io/evcc/tariff/gruenstromindex.go:99 +0x356
created by github.com/evcc-io/evcc/tariff.NewGrünStromIndexFromConfig in goroutine 1
    github.com/evcc-io/evcc/tariff/gruenstromindex.go:84 +0x15d

goroutine 197 [chan receive, 747 minutes]:
github.com/evcc-io/evcc/server.(*Influx).Run.func1()
    github.com/evcc-io/evcc/server/influxdb.go:141 +0x4e
created by github.com/evcc-io/evcc/server.(*Influx).Run in goroutine 167
    github.com/evcc-io/evcc/server/influxdb.go:140 +0xce

goroutine 195 [select]:
github.com/influxdata/influxdb-client-go/v2/api.(*WriteAPIImpl).bufferProc(0xc0001fe900)
    github.com/influxdata/influxdb-client-go/v2@v2.12.3/api/write.go:147 +0x11c
created by github.com/influxdata/influxdb-client-go/v2/api.NewWriteAPI in goroutine 167
    github.com/influxdata/influxdb-client-go/v2@v2.12.3/api/write.go:91 +0x2ea

goroutine 266 [chan receive, 518 minutes]:
github.com/evcc-io/evcc/push.(*Hub).Run(0xc000c73830, 0x14?, 0x22203d20736b6e61?)
    github.com/evcc-io/evcc/push/hub.go:78 +0x78
created by github.com/evcc-io/evcc/cmd.configureMessengers in goroutine 1
    github.com/evcc-io/evcc/cmd/setup.go:541 +0x2ff

goroutine 265 [chan receive, 747 minutes]:
github.com/evcc-io/evcc/push.(*Telegram).trackChats(0xc0007be600)
    github.com/evcc-io/evcc/push/telegram.go:67 +0xa7
created by github.com/evcc-io/evcc/push.NewTelegramFromConfig in goroutine 1
    github.com/evcc-io/evcc/push/telegram.go:57 +0x325

goroutine 166 [chan receive, 516 minutes]:
github.com/evcc-io/evcc/util/pipe.(*Deduplicator).pipe(0xc000c72fc0, 0x0?, 0x0?)
    github.com/evcc-io/evcc/util/pipe/limiter.go:46 +0x5e
created by github.com/evcc-io/evcc/util/pipe.(*Deduplicator).Pipe in goroutine 1
    github.com/evcc-io/evcc/util/pipe/limiter.go:63 +0x90

goroutine 169 [chan receive, 516 minutes]:
github.com/evcc-io/evcc/server.(*MQTT).Run(0xc000a1b2c0, {0x31078a0?, 0xc000249800}, 0x74536e6f69746167?)
    github.com/evcc-io/evcc/server/mqtt.go:285 +0xda5
created by github.com/evcc-io/evcc/cmd.runRoot in goroutine 1
    github.com/evcc-io/evcc/cmd/root.go:202 +0xe69

goroutine 168 [chan receive, 516 minutes]:
github.com/evcc-io/evcc/util/pipe.(*Dropper).pipe(0xc000b05a70, 0x63656a626f206e6f?, 0x6975716572207374?)
    github.com/evcc-io/evcc/util/pipe/limiter.go:116 +0x58
created by github.com/evcc-io/evcc/util/pipe.(*Dropper).Pipe in goroutine 1
    github.com/evcc-io/evcc/util/pipe/limiter.go:128 +0x90

goroutine 167 [chan receive, 516 minutes]:
github.com/evcc-io/evcc/server.(*Influx).Run(0xc000702e60, {0x31078a0, 0xc000249800}, 0x65736a2c30206469?)
    github.com/evcc-io/evcc/server/influxdb.go:148 +0x153
created by github.com/evcc-io/evcc/cmd.configureInflux in goroutine 1
    github.com/evcc-io/evcc/cmd/setup.go:440 +0x33b

goroutine 196 [select, 516 minutes]:
github.com/influxdata/influxdb-client-go/v2/api.(*WriteAPIImpl).writeProc(0xc0001fe900)
    github.com/influxdata/influxdb-client-go/v2@v2.12.3/api/write.go:190 +0xc6
created by github.com/influxdata/influxdb-client-go/v2/api.NewWriteAPI in goroutine 167
    github.com/influxdata/influxdb-client-go/v2@v2.12.3/api/write.go:92 +0x326

goroutine 89595 [IO wait]:
internal/poll.runtime_pollWait(0x7fb2fdd407d0, 0x72)
    runtime/netpoll.go:343 +0x85
internal/poll.(*pollDesc).wait(0xc000586500?, 0xc0007c0551?, 0x0)
    internal/poll/fd_poll_runtime.go:84 +0x27
internal/poll.(*pollDesc).waitRead(...)
    internal/poll/fd_poll_runtime.go:89
internal/poll.(*FD).Read(0xc000586500, {0xc0007c0551, 0x1, 0x1})
    internal/poll/fd_unix.go:164 +0x27a
net.(*netFD).Read(0xc000586500, {0xc0007c0551?, 0xc0013fd740?, 0x0?})
    net/fd_posix.go:55 +0x25
net.(*conn).Read(0xc00080c358, {0xc0007c0551?, 0x409700?, 0x100000001?})
    net/net.go:179 +0x45
net/http.(*connReader).backgroundRead(0xc0007c0540)
    net/http/server.go:683 +0x37
created by net/http.(*connReader).startBackgroundRead in goroutine 89587
    net/http/server.go:679 +0xba

goroutine 89551 [select, 2 minutes]:
net/http.(*http2clientStream).writeRequest(0xc0004e8780, 0xc0015b0300)
    net/http/h2_bundle.go:8486 +0xac7
net/http.(*http2clientStream).doRequest(0xc0018acfc0?, 0xc001400fa0?)
    net/http/h2_bundle.go:8348 +0x18
created by net/http.(*http2ClientConn).RoundTrip in goroutine 276
    net/http/h2_bundle.go:8254 +0x308

goroutine 318 [IO wait]:
internal/poll.runtime_pollWait(0x7fb2fdd406d8, 0x72)
    runtime/netpoll.go:343 +0x85
internal/poll.(*pollDesc).wait(0xc0009b8a80?, 0x20?, 0x0)
    internal/poll/fd_poll_runtime.go:84 +0x27
internal/poll.(*pollDesc).waitRead(...)
    internal/poll/fd_poll_runtime.go:89
internal/poll.(*FD).Accept(0xc0009b8a80)
    internal/poll/fd_unix.go:611 +0x2ac
net.(*netFD).accept(0xc0009b8a80)
    net/fd_unix.go:172 +0x29
net.(*UnixListener).accept(0xc00151be78?)
    net/unixsock_posix.go:172 +0x16
net.(*UnixListener).Accept(0xc000976120)
    net/unixsock.go:260 +0x30
net/http.(*Server).Serve(0xc0005702d0, {0x30dc490, 0xc000976120})
    net/http/server.go:3056 +0x364
github.com/evcc-io/evcc/server.HealthListener.func1()
    github.com/evcc-io/evcc/server/uds.go:39 +0x1f
created by github.com/evcc-io/evcc/server.HealthListener in goroutine 332
    github.com/evcc-io/evcc/server/uds.go:39 +0x1e5

goroutine 422 [IO wait]:
internal/poll.runtime_pollWait(0x7fb2fe124058, 0x72)
    runtime/netpoll.go:343 +0x85
internal/poll.(*pollDesc).wait(0xc0009b9700?, 0xc0015dd000?, 0x0)
    internal/poll/fd_poll_runtime.go:84 +0x27
internal/poll.(*pollDesc).waitRead(...)
    internal/poll/fd_poll_runtime.go:89
internal/poll.(*FD).Read(0xc0009b9700, {0xc0015dd000, 0x1000, 0x1000})
    internal/poll/fd_unix.go:164 +0x27a
net.(*netFD).Read(0xc0009b9700, {0xc0015dd000?, 0x4f8ae5?, 0x7fb2fe124148?})
    net/fd_posix.go:55 +0x25
net.(*conn).Read(0xc000071cb0, {0xc0015dd000?, 0x0?, 0xc00137a0c8?})
    net/net.go:179 +0x45
net/http.(*connReader).Read(0xc00137a0c0, {0xc0015dd000, 0x1000, 0x1000})
    net/http/server.go:791 +0x14b
bufio.(*Reader).fill(0xc0015c19e0)
    bufio/bufio.go:113 +0x103
bufio.(*Reader).Peek(0xc0015c19e0, 0x4)
    bufio/bufio.go:151 +0x53
net/http.(*conn).serve(0xc00143f3b0, {0x30e3c40, 0xc000b99470})
    net/http/server.go:2044 +0x75c
created by net/http.(*Server).Serve in goroutine 1
    net/http/server.go:3086 +0x5cb

goroutine 276 [select, 2 minutes]:
net/http.(*http2ClientConn).RoundTrip(0xc000e54600, 0xc0015b0300)
    net/http/h2_bundle.go:8318 +0x44f
net/http.(*http2Transport).RoundTripOpt(0xc000c71320, 0xc0015b0300, {0xa0?})
    net/http/h2_bundle.go:7586 +0x1b1
net/http.(*http2Transport).RoundTrip(...)
    net/http/h2_bundle.go:7535
net/http.http2noDialH2RoundTripper.RoundTrip({0x4d19880?}, 0xc0015b0300?)
    net/http/h2_bundle.go:10140 +0x16
net/http.(*Transport).roundTrip(0x4d19880, 0xc0015b0000)
    net/http/transport.go:549 +0x39e
net/http.(*Transport).RoundTrip(0xc000b354a8?, 0x2fe01e0?)
    net/http/roundtrip.go:17 +0x13
net/http.send(0xc0015b0000, {0x2fe01e0, 0x4d19880}, {0x101?, 0xc000b356e0?, 0x0?})
    net/http/client.go:260 +0x606
net/http.(*Client).send(0xc000c73920, 0xc0015b0000, {0x4d823e8?, 0x427de5?, 0x0?})
    net/http/client.go:181 +0x98
net/http.(*Client).do(0xc000c73920, 0xc0015b0000)
    net/http/client.go:724 +0x912
net/http.(*Client).Do(0x24aa6a0?, 0xc00091e120?)
    net/http/client.go:590 +0x13
github.com/go-telegram-bot-api/telegram-bot-api/v5.(*BotAPI).MakeRequest(0xc000327360, {0x26f4954, 0xa}, 0xc00091e090)
    github.com/go-telegram-bot-api/telegram-bot-api/v5@v5.5.1/bot.go:110 +0x451
github.com/go-telegram-bot-api/telegram-bot-api/v5.(*BotAPI).Request(0x2529c60?, {0x2ff1688, 0xc00091e000})
    github.com/go-telegram-bot-api/telegram-bot-api/v5@v5.5.1/bot.go:336 +0xcf
github.com/go-telegram-bot-api/telegram-bot-api/v5.(*BotAPI).GetUpdates(0xc0013a6f88?, {0x0, 0x0, 0x3e8, {0x0, 0x0, 0x0}})
    github.com/go-telegram-bot-api/telegram-bot-api/v5@v5.5.1/bot.go:405 +0x5d
github.com/go-telegram-bot-api/telegram-bot-api/v5.(*BotAPI).GetUpdatesChan.func1()
    github.com/go-telegram-bot-api/telegram-bot-api/v5@v5.5.1/bot.go:443 +0x78
created by github.com/go-telegram-bot-api/telegram-bot-api/v5.(*BotAPI).GetUpdatesChan in goroutine 265
    github.com/go-telegram-bot-api/telegram-bot-api/v5@v5.5.1/bot.go:434 +0x105

goroutine 263 [IO wait, 2 minutes]:
internal/poll.runtime_pollWait(0x7fb2fe124248, 0x72)
    runtime/netpoll.go:343 +0x85
internal/poll.(*pollDesc).wait(0xc000328000?, 0xc00133c000?, 0x0)
    internal/poll/fd_poll_runtime.go:84 +0x27
internal/poll.(*pollDesc).waitRead(...)
    internal/poll/fd_poll_runtime.go:89
internal/poll.(*FD).Read(0xc000328000, {0xc00133c000, 0x1800, 0x1800})
    internal/poll/fd_unix.go:164 +0x27a
net.(*netFD).Read(0xc000328000, {0xc00133c000?, 0xc00133c005?, 0x1e?})
    net/fd_posix.go:55 +0x25
net.(*conn).Read(0xc0011e68c8, {0xc00133c000?, 0x0?, 0xc0004a8c38?})
    net/net.go:179 +0x45
crypto/tls.(*atLeastReader).Read(0xc001588e70, {0xc00133c000?, 0xc001588e70?, 0x0?})
    crypto/tls/conn.go:805 +0x3b
bytes.(*Buffer).ReadFrom(0xc0004a8d28, {0x2fe4700, 0xc001588e70})
    bytes/buffer.go:211 +0x98
crypto/tls.(*Conn).readFromUntil(0xc0004a8a80, {0x2fe09e0?, 0xc0011e68c8}, 0x1800?)
    crypto/tls/conn.go:827 +0xde
crypto/tls.(*Conn).readRecordOrCCS(0xc0004a8a80, 0x0)
    crypto/tls/conn.go:625 +0x250
crypto/tls.(*Conn).readRecord(...)
    crypto/tls/conn.go:587
crypto/tls.(*Conn).Read(0xc0004a8a80, {0xc00118d000, 0x1000, 0x400000801?})
    crypto/tls/conn.go:1369 +0x158
bufio.(*Reader).Read(0xc001141980, {0xc00079ae40, 0x9, 0x0?})
    bufio/bufio.go:244 +0x197
io.ReadAtLeast({0x2fe08c0, 0xc001141980}, {0xc00079ae40, 0x9, 0x9}, 0x9)
    io/io.go:335 +0x90
io.ReadFull(...)
    io/io.go:354
net/http.http2readFrameHeader({0xc00079ae40, 0x9, 0x47fbb3?}, {0x2fe08c0?, 0xc001141980?})
    net/http/h2_bundle.go:1635 +0x65
net/http.(*http2Framer).ReadFrame(0xc00079ae00)
    net/http/h2_bundle.go:1899 +0x85
net/http.(*http2clientConnReadLoop).run(0xc0013adf98)
    net/http/h2_bundle.go:9276 +0x11f
net/http.(*http2ClientConn).readLoop(0xc000e54600)
    net/http/h2_bundle.go:9171 +0x65
created by net/http.(*http2Transport).newClientConn in goroutine 262
    net/http/h2_bundle.go:7843 +0xcbe

goroutine 279 [syscall, 747 minutes]:
os/signal.signal_recv()
    runtime/sigqueue.go:152 +0x29
os/signal.loop()
    os/signal/signal_unix.go:23 +0x13
created by os/signal.Notify.func1.1 in goroutine 267
    os/signal/signal.go:151 +0x1f

goroutine 268 [chan receive, 747 minutes]:
github.com/evcc-io/evcc/cmd.runRoot.func2()
    github.com/evcc-io/evcc/cmd/root.go:236 +0x26
created by github.com/evcc-io/evcc/cmd.runRoot in goroutine 1
    github.com/evcc-io/evcc/cmd/root.go:235 +0x10d7

goroutine 267 [chan receive, 747 minutes]:
github.com/evcc-io/evcc/cmd.runRoot.func1()
    github.com/evcc-io/evcc/cmd/root.go:230 +0x94
created by github.com/evcc-io/evcc/cmd.runRoot in goroutine 1
    github.com/evcc-io/evcc/cmd/root.go:226 +0x107d

goroutine 269 [select, 516 minutes]:
github.com/evcc-io/evcc/core.(*Site).Prepare.func1(0x0)
    github.com/evcc-io/evcc/core/site.go:812 +0xfc
created by github.com/evcc-io/evcc/core.(*Site).Prepare in goroutine 1
    github.com/evcc-io/evcc/core/site.go:810 +0xb8

goroutine 312 [semacquire, 387 minutes]:
internal/poll.runtime_Semacquire(0x7fb2fde764e8?)
    runtime/sema.go:67 +0x25
internal/poll.(*fdMutex).rwlock(0xc000052180, 0x70?)
    internal/poll/fd_mutex.go:154 +0xc5
internal/poll.(*FD).writeLock(...)
    internal/poll/fd_mutex.go:239
internal/poll.(*FD).Write(0xc000052180, {0xc000b22200, 0x61, 0x80})
    internal/poll/fd_unix.go:367 +0x65
os.(*File).write(...)
    os/file_posix.go:46
os.(*File).Write(0xc000070048, {0xc000b22200?, 0x61, 0x262f040?})
    os/file.go:183 +0x51
github.com/evcc-io/evcc/util.(*Redactor).Write(0xc0006f6ae0, {0xc000b22200?, 0x649446?, 0xc000dd74a0?})
    github.com/evcc-io/evcc/util/redactor.go:43 +0x1ae
log.(*Logger).output(0xc000c281b0, 0x0, 0x412f05?, 0xc000dd7770)
    log/log.go:245 +0x485
log.(*Logger).Printf(...)
    log/log.go:268
github.com/evcc-io/evcc/util/request.(*roundTripper).RoundTrip(0xc0012e2a98, 0xc0018a4200)
    github.com/evcc-io/evcc/util/request/roundtrip.go:93 +0x15a
net/http.send(0xc0018a4100, {0x2fe0200, 0xc0012e2a98}, {0x1?, 0x49e0b4?, 0x4d521c0?})
    net/http/client.go:260 +0x606
net/http.(*Client).send(0xc0004bf620, 0xc0018a4100, {0xc001300aa8?, 0x427f1c?, 0x4d521c0?})
    net/http/client.go:181 +0x98
net/http.(*Client).do(0xc0004bf620, 0xc0018a4100)
    net/http/client.go:724 +0x912
net/http.(*Client).Do(...)
    net/http/client.go:590
github.com/google/go-github/v32/github.(*Client).Do(0xc0013d0420, {0x30e3ce8, 0xc000606150}, 0xc0018a4000, {0x25da020, 0xc0007ac000})
    github.com/google/go-github/v32@v32.1.0/github/github.go:537 +0x271
github.com/google/go-github/v32/github.(*RepositoriesService).getSingleRelease(0xc0013d04a8, {0x30e3ce8, 0xc000606150}, {0xc0004d00c0?, 0x2?})
    github.com/google/go-github/v32@v32.1.0/github/repos_releases.go:123 +0x89
github.com/google/go-github/v32/github.(*RepositoriesService).GetLatestRelease(0x30e3690?, {0x30e3ce8, 0xc000606150}, {0x26ea96c?, 0x157cd566465391?}, {0x26ddb85, 0x4})
    github.com/google/go-github/v32@v32.1.0/github/repos_releases.go:105 +0xbf
github.com/evcc-io/evcc/server/updater.(*Repo).GetLatestRelease(0xc0004bf800)
    github.com/evcc-io/evcc/server/updater/github.go:59 +0x8f
github.com/evcc-io/evcc/server/updater.(*watch).findReleaseUpdate(0xc0012e2ab0, {0x2fd7700, 0x8})
    github.com/evcc-io/evcc/server/updater/watch.go:47 +0x2d
github.com/evcc-io/evcc/server/updater.(*watch).watchReleases(0xc0012e2ab0, {0x2fd7700, 0x8}, 0x0?)
    github.com/evcc-io/evcc/server/updater/watch.go:32 +0x6f
created by github.com/evcc-io/evcc/server/updater.Run in goroutine 311
    github.com/evcc-io/evcc/server/updater/run.go:20 +0x152

goroutine 334 [chan send, 516 minutes]:
github.com/evcc-io/evcc/core.(*Site).loopLoadpoints(0xc000249800, 0x0?)
    github.com/evcc-io/evcc/core/site.go:831 +0x5b
created by github.com/evcc-io/evcc/core.(*Site).Run in goroutine 331
    github.com/evcc-io/evcc/core/site.go:846 +0x1c5

goroutine 331 [syscall, 516 minutes]:
syscall.Syscall(0xc001000000?, 0xc001ad4520?, 0x80000000000?, 0x7ffff80000000000?)
    syscall/syscall_linux.go:69 +0x25
syscall.write(0xc000052180?, {0xc00062f600?, 0xc001ad4520?, 0xc000209d40?})
    syscall/zsyscall_linux_amd64.go:949 +0x3b
syscall.Write(...)
    syscall/syscall_unix.go:209
internal/poll.ignoringEINTRIO(...)
    internal/poll/fd_unix.go:736
internal/poll.(*FD).Write(0xc000052180, {0xc00062f600, 0x1a6, 0xd80})
    internal/poll/fd_unix.go:380 +0x35f
os.(*File).write(...)
    os/file_posix.go:46
os.(*File).Write(0xc000070048, {0xc00062f600?, 0x1a6, 0xc001ad4760?})
    os/file.go:183 +0x51
github.com/evcc-io/evcc/util.(*Redactor).Write(0xc0008e6160, {0xc00062f600?, 0x23?, 0xd80?})
    github.com/evcc-io/evcc/util/redactor.go:43 +0x1ae
io.(*multiWriter).Write(0xc00062f600?, {0xc00062f600, 0x1a6, 0xd80})
    io/multi.go:85 +0x6d
log.(*Logger).output(0xc0014262a0, 0x0, 0x0?, 0xc001ad49f0)
    log/log.go:245 +0x485
log.(*Logger).Println(0xc000209d40?, {0xc001ad4b58?, 0xc001ad4b68?, 0xc001ad4ba8?})
    log/log.go:276 +0x4b
github.com/evcc-io/evcc/util/request.(*roundTripper).RoundTrip(0xc0009662d0, 0xc001693700)
    github.com/evcc-io/evcc/util/request/roundtrip.go:140 +0xa85
net/http.send(0xc001693600, {0x2fe0200, 0xc0009662d0}, {0x1?, 0x49e0b4?, 0x4d521c0?})
    net/http/client.go:260 +0x606
net/http.(*Client).send(0xc001426510, 0xc001693600, {0xf8?, 0x265d200?, 0x4d521c0?})
    net/http/client.go:181 +0x98
net/http.(*Client).do(0xc001426510, 0xc001693600)
    net/http/client.go:724 +0x912
net/http.(*Client).Do(...)
    net/http/client.go:590
github.com/evcc-io/evcc/util/request.(*Helper).DoJSON(0xc0011e6030, 0xc001ad5178?, {0x21c2980, 0xc0010f2860})
    github.com/evcc-io/evcc/util/request/helper.go:68 +0x94
github.com/evcc-io/evcc/util/request.(*Helper).GetJSON(0x26dfa4c?, {0xc0008aa460, 0x20}, {0x219dd00, 0xc001bbd2b0})
    github.com/evcc-io/evcc/util/request/helper.go:81 +0xe5
github.com/evcc-io/evcc/charger.NewOpenWBPro.func1()
    github.com/evcc-io/evcc/charger/openwb-pro.go:58 +0xdf
github.com/evcc-io/evcc/provider.(*cached[...]).Get(0x0)
    github.com/evcc-io/evcc/provider/cache.go:74 +0x126
github.com/evcc-io/evcc/charger.(*OpenWBPro).CurrentPower(0x1?)
    github.com/evcc-io/evcc/charger/openwb-pro.go:140 +0x62
github.com/evcc-io/evcc/core.(*Loadpoint).UpdateChargePower.func1()
    github.com/evcc-io/evcc/core/loadpoint.go:1213 +0x37
github.com/avast/retry-go/v4.Do(0xc001ad5c78, {0x4d4cce0, 0x2, 0xc001ad5b98?})
    github.com/avast/retry-go/v4@v4.3.4/retry.go:135 +0x5a3
github.com/evcc-io/evcc/core.(*Loadpoint).UpdateChargePower(0xc00081ec00)
    github.com/evcc-io/evcc/core/loadpoint.go:1212 +0x50
github.com/evcc-io/evcc/core.(*Site).update(0xc000249800, {0x311c1b8?, 0xc00081ec00})
    github.com/evcc-io/evcc/core/site.go:723 +0x108
github.com/evcc-io/evcc/core.(*Site).Run(0xc000249800, 0xc0004e04e0, 0x2540be400)
    github.com/evcc-io/evcc/core/site.go:854 +0x2e5
github.com/evcc-io/evcc/cmd.runRoot.func4()
    github.com/evcc-io/evcc/cmd/root.go:282 +0x25
created by github.com/evcc-io/evcc/cmd.runRoot in goroutine 1
    github.com/evcc-io/evcc/cmd/root.go:281 +0x1a13

goroutine 311 [chan receive, 747 minutes]:
github.com/evcc-io/evcc/server/updater.Run(0xc000a75010, {0x0?, 0x0?}, 0xc0004e1800)
    github.com/evcc-io/evcc/server/updater/run.go:22 +0x1d4
created by github.com/evcc-io/evcc/cmd.runRoot in goroutine 1
    github.com/evcc-io/evcc/cmd/root.go:265 +0x1373

Analysis

Afaikt all interesting go routines are stuck on either syscall or semacquire, all coming from os.(*File).Write called by the same routine (util.(*Redactor).Write) which writes to os.Stdout:

return os.Stdout.Write(p)

I think whats happening here is that something goes wrong with os.Stdout which eventually leads to syscall.write getting stuck.

I'm no Unix expert but it seems as if it would be helpful if the write eventually was able to time out. If not it would be great if I could work around this somehow, e.g. setting a write deadline or similar?

bcmills commented 1 year ago

Run a go application in Docker on Synology NAS/amd64.

Can you describe what that does in a way that we can reproduce without access to a Synology device? (Presumably this is a variant of linux/amd64?)

Specifically:

If stdout is connected to a pipe, and some other process is holding that pipe open but not reading from it, then the fact that the write system call blocks is as described by POSIX (https://pubs.opengroup.org/onlinepubs/9699919799/functions/write.html):

If the O_NONBLOCK flag is clear, a write request may cause the thread to block ….

And the Go runtime leaves the O_NONBLOCK flag for os.Stdout set to whatever it was already set to when the program was started.

bcmills commented 1 year ago

I'm no Unix expert but it seems as if it would be helpful if the write eventually was able to time out. If not it would be great if I could work around this somehow, e.g. setting a write deadline or similar?

See https://pkg.go.dev/os#File.SetWriteDeadline.

gopherbot commented 11 months ago

Timed out in state WaitingForInfo. Closing.

(I am just a bot, though. Please speak up if this is a mistake or you have the requested information.)