x/build: set up a qemu builder · golang/go#1508

2011-02-13T14:42:41.000Z

by **m@capitanio.org**: I noticed a significant improvements in the arm tool chain :-) I think it makes now a sense to take a closer look at bugs in different environments. The first shot is a qemu in user mode: qemu-arm version 0.12.5 The host is (ubuntu 10.10) GOARCH=arm GORUN=qemu-arm hg identify ba58b167f1fc+ tip I tried with disabled peep or with GOARM=5, the bugs are similar. Some syscalls are not covered, (I would propose a QUEMU_UM to disable tests that use them): (epoll_create) netchan\ rpc\ websocket\ Some packages show a non-deterministic behaviour, a few do always break. I have no clue if qemu, go or both are buggy: go/printer\ compress/flate\ compress/gzip\ compress/zlib\ os\ big\ rpc/jsonrpc\ sync\ #(+ run.bash) bytes\ After disabling them, the test-suite *passed* all remaining tests. ---- Script bugs: run.bash: cmd/ebnflint ??? run.bash: doc/progs [ "$GOHOSTOS" == windows ] ??? run.bash: doc/codelab/wiki The test/run script fails with: ./run -v sed: can't read ./tmp.go: No such file or directory fail: chan/powser2.go fail: chan/select3.go 109a110,119 > =========== chan/powser2.go > throw: malloc/free - deadlock > > [signal 0xb code=0x1 addr=0x0 pc=0x15720] > > > =========== chan/select3.go > qemu-arm: /build/buildd/qemu-kvm-0.12.5+noroms/cpu-exec.c:784: handle_cpu_signal: Assertion `__ret == (abi_ulong)__ret' failed. > $RUNFILE: line 1: PID Aborted $E ./$A.out > 158a169,174 > > =========== fixedbugs/bug243.go > Unsupported setsockopt level=41 optname=26 > qemu: Unsupported syscall: 250 > Start pollServer: epoll_create: function not implemented > Unsupported setsockopt level=41 optname=26 1 known bugs; 0 unexpected bugs; test output differs The captured outputs are attached. Attachments: 1. qemu-um-bugs.txt (26808 bytes)

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by m@capitanio.org:

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qemu-um-bugs.txt (26808 bytes)

Guide contributeur

Direction de recherche: Configurez un emulateur en mode utilisateur QEMU pour executer les tests Go pour l'architecture ARM. Identifiez les appels systeme non pris en charge et creez un mecanisme pour sauter ces tests. Corrigez les eventuels bogues de test reveles par l'emulateur.
Stack technique: go
Domaine: devops
Type d'issue: DevOps
Difficulté: 3
Temps estimé: 1-2 jours
Statut d'activité: Ancienne
Clarté: Claire
Prérequis: GoQEMUshell scripting
Accessibilité débutant: 45

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