[SR-Users] Core fm_realloc function

Bruno Bresciani bruno.bresciani at gmail.com
Mon Jul 23 14:37:06 CEST 2012


Hi All,

I imagine that this core doesn't easy to replicate but somebody  can help
me to understand why it was generated? There is some way to  prevent it?

Best Regards


2012/7/18 Renan Capaverde <renan.capaverde at digitro.com.br>

>  I am having the same problem on kamailio 3.1.6. Someone please help.
>
> Cheers,
> Renan
>
> Em 17/7/2012 14:26, Bruno Bresciani escreveu:
>
> Excuse-me Daniel, I forgot this information... Kamailio version 3.1.2
>
> Best Regards
>
>
>  2012/7/17 Daniel-Constantin Mierla <miconda at gmail.com>
>
>>  Hello,
>>
>> send also the version 'kamailio -V' to match the proper sources.
>>
>> Cheers,
>> Daniel
>>
>>
>> On 7/17/12 7:11 PM, Bruno Bresciani wrote:
>>
>>  Hi all,
>>
>> I observed two at 0x08173bf0 in fm_realloc (qm=0xb5f7d000, p=0xb61f0bc0,
>> size=0) at mem/f_malloc.c:536.
>>
>> I don't know exactly what may be caused this core because the debug of
>> kamailio is disabled, but looking at backtrace (gdb) and source code I
>> could notice a relationship with TLS connection establishment (handshake).
>> Other important fact is that core was generated by the kamalio itself with
>> signal 6 (abort) because it can't find the pointer to memory realloc.
>> I'd like to know if someone already observed this issue and if my analyse
>> above is correct?
>>
>> Bellow is backtrace full with gdb:
>>
>> Core was generated by `/home2/local/kamailio/sbin/kamailio -P
>> /var/run/kamailio.pid'.
>> Program terminated with signal 6, Aborted.
>> #0  0x00f30402 in __kernel_vsyscall ()
>> (gdb)
>> (gdb)
>> (gdb)
>> (gdb)
>> (gdb) bt full
>> #0  0x00f30402 in __kernel_vsyscall ()
>> No symbol table info available.
>> #1  0x009fec10 in raise () from /lib/libc.so.6
>> No symbol table info available.
>> #2  0x00a00521 in abort () from /lib/libc.so.6
>> No symbol table info available.
>> #3  0x08173bf0 in fm_realloc (qm=0xb5f7d000, p=0xb61f0bc0, size=0) at
>> mem/f_malloc.c:536
>>         f = (struct fm_frag *) 0xb61f0bb8
>>         pf = <value optimized out>
>>         orig_size = 18
>> L=Ãb¬Ã2n = (struct fm_frag *) 0xb61f0bd2
>>         ptr = <value optimized out>
>>         hash = 23548
>> #4  0x0051a87f in ser_realloc (ptr=0xb61f0bc0, size=32) at
>> ../../mem/shm_mem.h:266
>> No locals.
>> #5  0x00460295 in OPENSSL_cleanse () from /lib/libcrypto.so.6
>> No symbol table info available.
>> #6  0x004609f7 in CRYPTO_realloc () from /lib/libcrypto.so.6
>> No symbol table info available.
>> #7  0x003efb22 in sk_insert () from /lib/libcrypto.so.6
>> No symbol table info available.
>> #8  0x003efbaa in sk_push () from /lib/libcrypto.so.6
>> No symbol table info available.
>> #9  0x007c2ac3 in ssl_bytes_to_cipher_list () from /lib/libssl.so.6
>> No symbol table info available.
>> #10 0x007aa9f3 in ssl3_get_client_hello () from /lib/libssl.so.6
>> No symbol table info available.
>> #11 0x007ab815 in ssl3_accept () from /lib/libssl.so.6
>> No symbol table info available.
>> #12 0x007c1c3a in SSL_accept () from /lib/libssl.so.6
>> No symbol table info available.
>> #13 0x005278e3 in tls_accept (c=0xb621af88, error=0xbf91dfc8) at
>> tls_server.c:346
>>         ret = <value optimized out>
>>         ssl = (SSL *) 0xb61c1878
>>         cert = <value optimized out>
>>         tls_c = (struct tls_extra_data *) 0xb6208e58
>>         tls_log = <value optimized out>
>> #14 0x0052da8e in tls_read_f (c=0xb621af88, flags=0xbf91e200) at
>> tls_server.c:1028
>>         r = (struct tcp_req *) 0xb621affc
>>         bytes_free = 4095
>>         bytes_read = 70
>>         read_size = 4095
>>         ssl_error = 0
>>         ssl_read = 0
>>         ssl = (SSL *) 0xb61c1878
>>         rd_buf = "\026\003\001\000A\001\000\000=\003\001Oÿ\v¡ywP\fkÃDÃ
>>
>> 0/\000\a\000\005\001\000ÃÃÃï000\000\026\0009\0008\0005\000\026\000\023\000\n\0003\0002\00
>> 202i<ä<åþ\031ì234 \237ê030Y){lѶ"...06Ã'Ãr9ìë¸{[©\t\205\037\036ÿHPH5µ\t(é32Ã027æò036¾\"\rÔ¤YÃ215uº\027)ö000ñ215\vÃà éEa\023xéJ\206T\204CÃ
>> wr_buf =
>> "\027\003\001\003 w²'\016ѼÃ033ÃLÃ021Ã)Ã\220hnL¦\020Xê\236\200\tIhøSf\234Ã\rÃ
>>
>> ?¯¼\024FÃ\200ª/\2264RÃaäIpXȬÃ035äQh\211Ã026ý4ÃU+\asr£/`¤Oû1AʹqUܿ·v±ü\205"...
>>         rd = {buf = 0xbf90dfa4 "\026\003\001", pos = 70, used = 70, size
>> = 65536}
>>         wr = {
>>   buf = 0xbf8fdfa4
>> "\027\003\001\003 w²'\016ѼÃ033ÃLÃ021Ã)Ã\220hnL¦\020Xê\236\200\tIhøSf\234Ã\rÃ
>> ?¯¼\024FÃ\200ª/\2264RÃaäIpXȬÃ035äQh\211Ã026ý4ÃU+\asr£/`¤Oû1AʹqUܿ·v±ü\205"...,
>> pos = 0, used = 0,
>> size = 65536}
>>         tls_c = (struct tls_extra_data *) 0xb6208e58
>>         enc_rd_buf = (struct tls_rd_buf *) 0x0
>>         n = 0
>>         flush_flags = <value optimized out>
>>         err_src = 0x541a83 "TLS read:"
>>         x = <value optimized out>
>> #15 0x08158ade in tcp_read_headers (c=0xb621af88, read_flags=0xbf91e200)
>> at tcp_read.c:406
>>         bytes = -1
>>         remaining = <value optimized out>
>>         p = <value optimized out>
>>         r = (struct tcp_req *) 0xb621affc
>> #16 0x08158fd4 in tcp_read_req (con=0xb621af88, bytes_read=0xbf91e204,
>> read_flags=0xbf91e200) at tcp_read.c:871
>>         bytes = <value optimized out>
>>         total_bytes = 0
>>         resp = <value optimized out>
>>         size = <value optimized out>
>>         req = (struct tcp_req *) 0xb621affc
>>         dst = {send_sock = 0x1, to = {s = {sa_family = 57540, sa_data =
>> "\221¿\020\000\000\000\000\000\000\000\020\000\000"}, sin = {sin_family =
>> 57540,
>>       sin_port = 49041, sin_addr = {s_addr = 16}, sin_zero =
>> "\000\000\000\000\020\000\000"}, sin6 = {sin6_family = 57540, sin6_port =
>> 49041,
>>       sin6_flowinfo = 16, sin6_addr = {in6_u = {u6_addr8 =
>> "\000\000\000\000\020\000\000\000\001\000\000\000\001\000\000", u6_addr16 =
>> {0, 0, 16, 0, 1, 0,
>>             1, 0}, u6_addr32 = {0, 16, 1, 1}}}, sin6_scope_id = 12}}, id
>> = -1080958468, proto = 4 '\004', send_flags = {f = 0 '\0', blst_imask = 0
>> '\0'}}
>>         c = 10 '\n'
>> #17 0x08159a0f in handle_io (fm=0x83296b0, events=1, idx=-1) at
>> tcp_read.c:1150
>>         ret = 4
>>         n = 4
>>         read_flags = 1
>>         con = (struct tcp_connection *) 0xb621af88
>>         s = 12
>>         resp = <value optimized out>
>>         t = <value optimized out>
>> #18 0x0815d653 in tcp_receive_loop (unix_sock=35) at io_wait.h:1091
>> No locals.
>> ---Type <return> to continue, or q <return> to quit---
>> #19 0x0812885b in tcp_init_children () at tcp_main.c:4819
>>         r = 3
>>         reader_fd_1 = 35
>>         pid = <value optimized out>
>>         si = <value optimized out>
>> #20 0x080ad412 in main_loop () at main.c:1632
>>         i = 4
>>         pid = <value optimized out>
>>         si = (struct socket_info *) 0x0
>>         si_desc = "udp receiver child=3 sock=192.168.166.31:5060
>> \000\221¿\002\000\000\000/\200\220\000\001\000\000\000\000\000H\000¨ä21¿\001\000\000\000°¶è026¶\000\000\000\000\000õ\030s2\b\002\000\000\000âf\b\000õ\001\000\000\000\000\000\000\000\001\000\000\000\000\000\000\000ÿÿÿÿ¸ä21¿"
>> #21 0x080afbe7 in main (argc=3, argv=dwarf2_read_address: Corrupted DWARF
>> expression.
>> ) at main.c:2398
>>         cfg_stream = (FILE *) 0x8a2d008
>>         c = <value optimized out>
>>         r = 0
>>         tmp = 0xbf91e674
>> "\212þ\221¿\233þ\221¿°þ\221¿»þ\221¿Ã\221¿ù1¿\020ÿ\221¿Dÿ\221¿Lÿ\221¿Wÿ\221¿]ÿ\221¿oÿ\221¿{ÿ\221¿\202ÿ\221
>> tmp_len = 10492229
>>         port = 136192361
>>         proto = -1080957480
>>         ret = <value optimized out>
>>         seed = 21782655
>>         rfd = 4
>>         debug_save = <value optimized out>
>>         debug_flag = 0
>>         dont_fork_cnt = 0
>>         n_lst = <value optimized out>
>>         p = <value optimized out>
>>
>>
>> Best Regards
>>
>>
>>  _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing listsr-users at lists.sip-router.orghttp://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>
>>
>> --
>> Daniel-Constantin Mierla - http://www.asipto.comhttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>> Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - http://asipto.com/u/katu
>> Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - http://asipto.com/u/kpw
>>
>>
>
>
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