segfault at 10 ip 00007fbb33028d4e sp 00007ffd8d3bf380 error 4 in libdbus-1.so.3.19.13[7fbb33027000+2e000]

[Srinadh Penugonda]

Thats what I suspect too but I could not understand what is the issue.
Based on the below interface (which I acquired through busctl),root at sonic:~# busctl introspect org.SONiC.HostService.keyhandler  /org/SONiC/HostService/keyhandler
NAME                                TYPE      SIGNATURE RESULT/VALUE FLAGS
org.SONiC.HostService.keyhandler    interface -         -            -
.key_ctl                            method    as        is           -
 dbusxx-xml2cpp generated the proxy header with the below signature for key_ctl
    ::DBus::Struct< int32_t, std::string > key_ctl(const std::vector< std::string >& data)

And, that is exactly what I am sending - a vector of strings - from HostQuery():        vector<string> vals = {"pwEncrypt","eventd"};
        syslog(LOG_CRIT, "calling key_ctl");        ret = host_client.key_ctl(vals);        syslog(LOG_CRIT, "key_ctl returned");


~~  Thanks, Srinadh

 

    On Tuesday, September 28, 2021, 06:41:55 PM PDT, Lawrence D'Oliveiro <ldo at geek-central.gen.nz> wrote:  
 
 On Wed, 29 Sep 2021 01:39:25 +0000 (UTC), Srinadh Penugonda wrote:

> If it crashes in the host module, I should see it in the backtrace.
> But the backtrace is pointing to libdbus.. 

Very likely because the C++ code is passing some bad structure to
libdbus.
  
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