[Freeswitch-users] Switch_curl

Anthony Minessale anthony.minessale at gmail.com
Wed Mar 16 01:42:07 MSK 2016 

Curl is used in a few places and is not unstable.  Study some of those mods
and maybe you can see how to use it in a typical situation.  Probably its
related to memory management or lifecycle of objects you may be using.

On Tuesday, March 15, 2016, Chris Mandra <mandra at gmail.com> wrote:

> Hey guys, I'm working on a simple media bug module using FS 1.6. When a
> call comes in I'm calling switch_curl doing an http get.
>
> In switch_standard_app I use switch_curl and invoke
> switch_curl_easy_perform and exit after that.
>
> Calling switch_curl seems very unstable. It's crashing free switch most of
> the time.  Are there any things I should be looking for related to this?
> I'm wondering if maybe this is a threading issue? Any ideas?
> I've included some backtraces
>
> Thanks, chris
>
>
> (gdb) bt
>
> #0  0x00007f8f00c59cc9 in __GI_raise (sig=sig at entry=6) at
> ../nptl/sysdeps/unix/sysv/linux/raise.c:56
>
> #1  0x00007f8f00c5d0d8 in __GI_abort () at abort.c:89
>
> #2  0x00007f8f00c96394 in __libc_message (do_abort=do_abort at entry=1,
> fmt=fmt at entry=0x7f8f00da4b28 "*** Error in `%s': %s: 0x%s ***\n") at
> ../sysdeps/posix/libc_fatal.c:175
>
> #3  0x00007f8f00ca266e in malloc_printerr (ptr=<optimized out>,
> str=0x7f8f00da0c19 "free(): invalid pointer", action=1) at malloc.c:4996
>
> #4  _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at
> malloc.c:3840
>
> #5  0x00007f8f01334567 in switch_log_node_free (pnode=pnode at entry=0x7f8eb2b1f158)
> at src/switch_log.c:136
>
> #6  0x00007f8eeb192a24 in read_packet (listener=listener at entry=0x7f8ebc027898,
> event=event at entry=0x7f8eb2b1f7f0, timeout=timeout at entry=0) at
> mod_event_socket.c:1361
>
> #7  0x00007f8eeb1988a0 in listener_run (thread=<optimized out>,
> obj=0x7f8ebc027898) at mod_event_socket.c:2719
>
> #8  0x00007f8f01544430 in dummy_worker (opaque=0x7f8eb2be4868) at
> threadproc/unix/thread.c:151
>
> #9  0x00007f8f00ff0182 in start_thread (arg=0x7f8eb2b20700) at
> pthread_create.c:312
>
> #10 0x00007f8f00d1d47d in clone () at
> ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>
>
> *[* <https://soniccloud.slack.com/archives/D02UEC39S/p1458078254000027>
>
> 5:44 <https://soniccloud.slack.com/archives/D02UEC39S/p1458078254000027>
>
> *]* <https://soniccloud.slack.com/archives/D02UEC39S/p1458078254000027>
>
> (gdb) bt full
>
> #0  0x00007f8f00c59cc9 in __GI_raise (sig=sig at entry=6) at
> ../nptl/sysdeps/unix/sysv/linux/raise.c:56
>
>        resultvar = 0
>
>        pid = 18329
>
>        selftid = 18421
>
> #1  0x00007f8f00c5d0d8 in __GI_abort () at abort.c:89
>
>        save_stage = 2
>
>        act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction =
> 0x0}, sa_mask = {__val = {0 <repeats 16 times>}}, sa_flags = 0, sa_restorer
> = 0x0}
>
>        sigs = {__val = {32, 0 <repeats 15 times>}}
>
> #2  0x00007f8f00c96394 in __libc_message (do_abort=do_abort at entry=1,
> fmt=fmt at entry=0x7f8f00da4b28 "*** Error in `%s': %s: 0x%s ***\n") at
> ../sysdeps/posix/libc_fatal.c:175
>
>        ap = {{gp_offset = 40, fp_offset = 32654, overflow_arg_area =
> 0x7f8eb2b1f010, reg_save_area = 0x7f8eb2b1efa0}}
>
>        fd = 2
>
>        on_2 = <optimized out>
>
>        list = <optimized out>
>
>        nlist = <optimized out>
>
>        cp = <optimized out>
>
>        written = <optimized out>
>
> #3  0x00007f8f00ca266e in malloc_printerr (ptr=<optimized out>,
> str=0x7f8f00da0c19 "free(): invalid pointer", action=1) at malloc.c:4996
>
>        buf = "00007f8ed0036700"
>
>        cp = <optimized out>
>
> #4  _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at
> malloc.c:3840
>
>        size = <optimized out>
>
>        fb = <optimized out>
>
>        nextchunk = <optimized out>
>
>        nextsize = <optimized out>
>
>        nextinuse = <optimized out>
>
>        prevsize = <optimized out>
>
>        bck = <optimized out>
>
>        fwd = <optimized out>
>
>        errstr = <optimized out>
>
>        locked = <optimized out>
>
> #5  0x00007f8f01334567 in switch_log_node_free (pnode=pnode at entry=0x7f8eb2b1f158)
> at src/switch_log.c:136
>
>        node = 0x7f8ed8012ab0
>
> #6  0x00007f8eeb192a24 in read_packet (listener=listener at entry=0x7f8ebc027898,
> event=event at entry=0x7f8eb2b1f7f0, timeout=timeout at entry=0) at
> mod_event_socket.c:1361
>
>        dnode = 0x7f8ed8012ab0
>
>        do_sleep = <optimized out>
>
>        mlen = 0
>
>        bytes = 0
>
>        mbuf = 0x7f8ecc1ebfc0 ""
>
>        buf = "Content-Type: log/data\nContent-Length: 88\nLog-Level:
> 7\nText-Channel: 3\nLog-File: param_hps_strategy.cpp\nLog-Func:
> retrieve\nLog-Line: 115\nUser-Data: \347@
> \247\a\n\n\000\n\n\000\065-418f-a6d1-9dc8f48e0cf9\n\n\000\000\071\n\n\000c8f48e0cf9"...
>
>        len = 88
>
>        status = SWITCH_STATUS_BREAK
>
>        count = 0
>
>        elapsed = <optimized out>
>
>        start = 1457966137
>
>        pop = 0x7f8ed8012ab0
>
>        ptr = 0x7f8ecc1ebfc0 ""
>
>        crcount = 0 '\000'
>
>        buf_len = 2048
>
>        channel = 0x0
>
>        clen = 0
>
>        __PRETTY_FUNCTION__ = "read_packet"
>
>        __func__ = "read_packet"
>
> #7  0x00007f8eeb1988a0 in listener_run (thread=<optimized out>,
> obj=0x7f8ebc027898) at mod_event_socket.c:2719
>
>        listener = 0x7f8ebc027898
>
>        buf = '\000' <repeats 1023 times>
>
>        len = 1024
>
>        status = <optimized out>
>
>        event = 0x0
>
>        reply = "\000OK log level  [7]", '\000' <repeats 493 times>
>
>        session = 0x0
>
>        channel = 0x0
>
>        revent = 0x0
>
>        var = <optimized out>
>
>        locked = 1
>
>        __PRETTY_FUNCTION__ = "listener_run"
>
>        __func__ = "listener_run"
>
> #8  0x00007f8f01544430 in dummy_worker (opaque=0x7f8eb2be4868) at
> threadproc/unix/thread.c:151
>
>        thread = 0x7f8eb2be4868
>
> #9  0x00007f8f00ff0182 in start_thread (arg=0x7f8eb2b20700) at
> pthread_create.c:312
>
>        __res = <optimized out>
>
>        pd = 0x7f8eb2b20700
>
>        now = <optimized out>
>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140250860095232,
> -640791540281233069, 0, 0, 140250860095936, 140250860095232,
> 578173923610734931, 577994035108262227}, mask_was_saved = 0}}, priv = {pad
> = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>
>        not_first_call = <optimized out>
>
>        pagesize_m1 = <optimized out>
>
>        sp = <optimized out>
>
>        freesize = <optimized out>
>
>        __PRETTY_FUNCTION__ = "start_thread"
>
> #10 0x00007f8f00d1d47d in clone () at
> ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>
> No locals
>


-- 
Anthony Minessale II       ♬ @anthmfs  ♬ @FreeSWITCH  ♬

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