Fwd:

[Wenhua Zhang <shiziwen@gmail.com>]

Hi ，
When I run the stap command as below,

 /opt/systemtap/bin/stap --ldd -d /usr/local/nginx/sbin/nginx
 --all-modules -D MAXMAPENTRIES=5120  -D MAXACTION=20000  -D
 MAXTRACE=50 -D MAXSTRINGLEN=1024 -D MAXBACKTRACE=100 -x 25017 a.stp
 --vp 00001 > a.out

There is an error:
 WARNING: missing unwind/symbol data for module
 'stap_97bdcbebec34bca89d728c7b361aa64_24788'
 WARNING: missing unwind/symbol data for module 'uprobes'
 Pass 5: starting run.
 ERROR: probe timer.profile registration error (rc -16)

 The stap file as:
global s;
    global quit = 0;

    probe timer.profile {
        if (pid() == target()) {
            if (quit) {
                foreach (i in s-) {
                    print_ustack(i);
                    printf("\t%d\n", @count(s[i]));
                }
                exit()
            } else {
                s[ubacktrace()] <<< 1;
            }
        }
    }

    probe timer.s(20) {
        quit = 1
    }

Can you help me find what happened and what should I do to resolve it?
Thanks very much.

Best Wishes,
Wenhua