(gdb) bt full
#0  0x00007f69b6b814db in xmlHashUpdateEntry3 () from /usr/lib64/libxml2.so.2
No symbol table info available.
#1  0x00007f69b73046be in xsltRegisterExtModuleFunction () from /usr/lib64/libxslt.so.1
No symbol table info available.
#2  0x00007f69b7524caa in exsltRegisterAll () from /usr/lib64/libexslt.so.0
No symbol table info available.
#3  0x00000000004201b6 in xsl_transform (xml_text=
    0x7f69a4424fd0 "<gsad_response><title>Internal error: request_handler:4426</title><message>An internal error occured inside GSA daemon. Diagnostics: Token missing or bad.</message><backurl>/omp?cmd=get_tasks</backurl"...) at /tmp/openvas/gsa/src/gsad_base.c:72
        cur = 0x0
        doc = <value optimized out>
        res = <value optimized out>
        doc_txt_ptr = 0x0
        doc_txt_len = 0
#4  0x000000000042036b in gsad_message (credentials=<value optimized out>, title=<value optimized out>, function=<value optimized out>, line=<value optimized out>,
    msg=<value optimized out>, backurl=<value optimized out>) at /tmp/openvas/gsa/src/gsad_base.c:151
        xml =
    0x7f69a4424fd0 "<gsad_response><title>Internal error: request_handler:4426</title><message>An internal error occured inside GSA daemon. Diagnostics: Token missing or bad.</message><backurl>/omp?cmd=get_tasks</backurl"...
        resp = <value optimized out>
#5  0x000000000040efb2 in request_handler (cls=<value optimized out>, connection=0x7f69a4424eb0, url=0x995374 "/openx/www/admin/index.php", method=<value optimized out>,
    version=<value optimized out>, upload_data=<value optimized out>, upload_data_size=0x7f69b4070bc8, con_cls=0x7f69a4424ed8) at /tmp/openvas/gsa/src/gsad.c:4442
        token = 0x0
        user = <value optimized out>
        url_base = 0x42132f "/"
        default_file = 0x4212f5 "/login/login.html"
        omp_cgi_base = 0x421339 "/omp"
        oap_cgi_base = 0x42133e "/oap"
        content_type = GSAD_CONTENT_TYPE_TEXT_HTML
        content_disposition = 0x0
        response_size = 0
        http_response_code = 200
        response = 0x0
        ret = <value optimized out>
        res = <value optimized out>
        credentials = 0x0
        __FUNCTION__ = "request_handler"
        __PRETTY_FUNCTION__ = "request_handler"
#6  0x00007f69b69171c9 in call_connection_handler () from /usr/lib64/libmicrohttpd.so.10
No symbol table info available.
#7  0x00007f69b6917df8 in MHD_connection_handle_idle () from /usr/lib64/libmicrohttpd.so.10
No symbol table info available.
#8  0x00007f69b691a0e7 in MHD_handle_connection () from /usr/lib64/libmicrohttpd.so.10
No symbol table info available.
#9  0x00007f69b6074a4f in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#10 0x00007f69b5dde82d in clone () from /lib64/libc.so.6
No symbol table info available.
#11 0x0000000000000000 in ?? ()
No symbol table info available.