如何设置SA_ONSTACK标志

时间：2019-06-07 09:57:10

标签： go ibm-mq

我的Go应用程序连接到IBM MQ。

当我的应用程序抛出分段违规错误（信号SIGSEGV）时，IBM MQ注册的信号处理程序使我的应用程序抛出“没有SA_ONSTACK标志的非Go代码设置信号处理程序”。

那我怎么设置那个标志呢？

我的代码

package main

import (
    "fmt"
    "github.com/ibm-messaging/mq-golang/ibmmq"
)

type A struct {
    Str string
}

type B struct {
    Apointer *A
}

func main() {
    connectIBMMQ()

    b := B{}
    fmt.Println(b.Apointer.Str)
}

const (
    QMgrName       = `QMgrName`
    ChannelName    = `ChannelName`
    ConnectionName = `0.0.0.0(1416)`
    Username       = `username`
    Password       = `password`
)

func connectIBMMQ() {
    mqcd := ibmmq.NewMQCD()
    mqcd.ChannelName = ChannelName
    mqcd.ConnectionName = ConnectionName

    csp := ibmmq.NewMQCSP()
    csp.AuthenticationType = ibmmq.MQCSP_AUTH_USER_ID_AND_PWD
    csp.UserId = Username
    csp.Password = Password

    cno := ibmmq.NewMQCNO()
    cno.ClientConn = mqcd
    cno.Options = ibmmq.MQCNO_CLIENT_BINDING + ibmmq.MQCNO_RECONNECT + ibmmq.MQCNO_HANDLE_SHARE_BLOCK
    cno.SecurityParms = csp

    ibmmq.Connx(QMgrName, cno)
}

参考

https://www.ibm.com/support/knowledgecenter/en/SSFKSJ_9.1.0/com.ibm.mq.dev.doc/q025880_.htm https://golang.org/pkg/os/signal/#hdr-Go_programs_that_use_cgo_or_SWIG

完整错误

signal 11 received but handler not on signal stack
fatal error: non-Go code set up signal handler without SA_ONSTACK flag

runtime stack:
runtime: unexpected return pc for runtime.sigtramp called from 0x7f60f6e9a517
stack: frame={sp:0xc000046628, fp:0xc000046680} stack=[0xc00003e578,0xc000046978)
000000c000046528:  000000c000046530  00000000004549a0 <runtime.throw.func1+0> 
000000c000046538:  00000000004e2c3b  0000000000000039 
000000c000046548:  000000c000046568  00000000004415df <runtime.sigNotOnStack+127> 
000000c000046558:  00000000004e2c3b  0000000000000039 
000000c000046568:  000000c000046618  0000000000440c6d <runtime.sigtrampgo+749> 
000000c000046578:  000000000000000b  000000c000046600 
000000c000046588:  000000c000046880  0000000000000000 
000000c000046598:  0000000000000000  000000c000046628 
000000c0000465a8:  0000000000000000  0000000000000000 
000000c0000465b8:  0000000000000000  0000000000000000 
000000c0000465c8:  0000000000000000  000000c000000180 
000000c0000465d8:  0000000000000000  ffffffffffffffff 
000000c0000465e8:  0000000000000000  0000000000000000 
000000c0000465f8:  0000000000000000  000000c000002000 
000000c000046608:  0000000000000000  0000000000008000 
000000c000046618:  000000c000046670  0000000000459a33 <runtime.sigtramp+67> 
000000c000046628: <000000000000000b  000000c0000469b0 
000000c000046638:  000000c000046880  000000c000046880 
000000c000046648:  000000c0000469b0  0000000000000000 
000000c000046658:  000000000000000b  000000c000046670 
000000c000046668:  00007f60f78213c0  000000000262e400 
000000c000046678: !00007f60f6e9a517 >000000c000046690 
000000c000046688:  8e26f8f48c919100  0000000000000000 
000000c000046698:  0000000000000000  0000000000000008 
000000c0000466a8:  0000000000000000  000000c000000180 
000000c0000466b8:  0000000000000000  0000000000000000 
000000c0000466c8:  0000000000000000  0000000000000000 
000000c0000466d8:  0000000000000000  0000000000000000 
000000c0000466e8:  0000000000000000  0000000000000000 
000000c0000466f8:  0000000000000000  0000000000000000 
000000c000046708:  0000000000000000  0000000000000000 
000000c000046718:  0000000000000000  000000c000046f88 
000000c000046728:  0000000000000004  0000000000000012 
000000c000046738:  00000000004f21e1  0000000000000000 
000000c000046748:  00007f60f6e9b45a  0000000000000000 
000000c000046758:  0000000000000000  0000000000000000 
000000c000046768:  0000000000000000  0000000000000000 
000000c000046778:  0000000000000000 
runtime.throw(0x4e2c3b, 0x39)
    /usr/local/go/src/runtime/panic.go:617 +0x72
runtime.sigNotOnStack(0xb)
    /usr/local/go/src/runtime/signal_unix.go:576 +0x7f
runtime.sigtrampgo(0xb, 0xc0000469b0, 0xc000046880)
    /usr/local/go/src/runtime/signal_unix.go:334 +0x2ed
runtime: unexpected return pc for runtime.sigtramp called from 0x7f60f6e9a517
stack: frame={sp:0xc000046628, fp:0xc000046680} stack=[0xc00003e578,0xc000046978)
000000c000046528:  000000c000046530  00000000004549a0 <runtime.throw.func1+0> 
000000c000046538:  00000000004e2c3b  0000000000000039 
000000c000046548:  000000c000046568  00000000004415df <runtime.sigNotOnStack+127> 
000000c000046558:  00000000004e2c3b  0000000000000039 
000000c000046568:  000000c000046618  0000000000440c6d <runtime.sigtrampgo+749> 
000000c000046578:  000000000000000b  000000c000046600 
000000c000046588:  000000c000046880  0000000000000000 
000000c000046598:  0000000000000000  000000c000046628 
000000c0000465a8:  0000000000000000  0000000000000000 
000000c0000465b8:  0000000000000000  0000000000000000 
000000c0000465c8:  0000000000000000  000000c000000180 
000000c0000465d8:  0000000000000000  ffffffffffffffff 
000000c0000465e8:  0000000000000000  0000000000000000 
000000c0000465f8:  0000000000000000  000000c000002000 
000000c000046608:  0000000000000000  0000000000008000 
000000c000046618:  000000c000046670  0000000000459a33 <runtime.sigtramp+67> 
000000c000046628: <000000000000000b  000000c0000469b0 
000000c000046638:  000000c000046880  000000c000046880 
000000c000046648:  000000c0000469b0  0000000000000000 
000000c000046658:  000000000000000b  000000c000046670 
000000c000046668:  00007f60f78213c0  000000000262e400 
000000c000046678: !00007f60f6e9a517 >000000c000046690 
000000c000046688:  8e26f8f48c919100  0000000000000000 
000000c000046698:  0000000000000000  0000000000000008 
000000c0000466a8:  0000000000000000  000000c000000180 
000000c0000466b8:  0000000000000000  0000000000000000 
000000c0000466c8:  0000000000000000  0000000000000000 
000000c0000466d8:  0000000000000000  0000000000000000 
000000c0000466e8:  0000000000000000  0000000000000000 
000000c0000466f8:  0000000000000000  0000000000000000 
000000c000046708:  0000000000000000  0000000000000000 
000000c000046718:  0000000000000000  000000c000046f88 
000000c000046728:  0000000000000004  0000000000000012 
000000c000046738:  00000000004f21e1  0000000000000000 
000000c000046748:  00007f60f6e9b45a  0000000000000000 
000000c000046758:  0000000000000000  0000000000000000 
000000c000046768:  0000000000000000  0000000000000000 
000000c000046778:  0000000000000000 
runtime.sigtramp(0xc000046690, 0x8e26f8f48c919100, 0x0, 0x0, 0x8, 0x0, 0xc000000180, 0x0, 0x0, 0x0, ...)
    /usr/local/go/src/runtime/sys_linux_amd64.s:357 +0x43

goroutine 17 [syscall, locked to thread]:
runtime.goexit()
    /usr/local/go/src/runtime/asm_amd64.s:1337 +0x1 fp=0xc00004afe8 sp=0xc00004afe0 pc=0x457e41

goroutine 1 [running]:
    goroutine running on other thread; stack unavailable

1 个答案:

答案 0 :(得分：0)

您可以尝试设置环境变量“ MQS_NO_SYNC_SIGNAL_HANDLING = true”以禁用MQ的某些信号设置。至少应该更好地了解SEGV的来源。

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