[Serdev] SER-0.8.14 segfaults

[Jiri Kuthan]

Thanks! We will look at it. I don't think it is related to exec_msg
-- even if the executed application was broken, it lives in a separate
process space.

-jiri

At 11:45 AM 8/11/2004, Andreas Granig wrote:
>Hi,
>
>Jiri Kuthan wrote:
>>thanks for reporting. Please send a tarball with your source, core dump
>>and configuration file to serhelp at lists.iptel.org.
>
>Ok, will be sent ASAP.
>
>>Just few quick questions: are you using AVPs? what is the value of avp
>>in the backtrace bellow?
>
>No, I don't use AVP. This is my first contact with that...
>
>Some backtrace analysis:
>
>(gdb) p list
>$1 = (struct usr_avp **) 0x40559ebc
>(gdb) p *list
>$2 = (struct usr_avp *) 0x2941
>(gdb) x/10c 0x40559ebc
>0x40559ebc:     65 'A'  41 ')'  0 '\0'  0 '\0'  -48 'Ð' 1 '\001'        0 '\0'  0 '\0'
>0x40559ec4:     0 '\0'  0 '\0'
>(gdb) x/20c 0x40559eb0
>0x40559eb0:     0 '\0'  0 '\0'  0 '\0'  0 '\0'  0 '\0'  0 '\0'  0 '\0'  0 '\0'
>0x40559eb8:     0 '\0'  0 '\0'  0 '\0'  0 '\0'  65 'A'  41 ')'  0 '\0'  0 '\0'
>0x40559ec0:     -48 'Ð' 1 '\001'        0 '\0'  0 '\0'
>(gdb)
>
>Looks like there's a buffer overflow somewhere, but it doesn't seem to be a string...
>
>I call some external C applications with exec_msg, but if one of them has an error, I assume SER should only get a broken pipe, shouldn't it?
>
>>>Program terminated with signal 11, Segmentation fault.
>>><snip>
>>>#0  destroy_avp_list_unsafe (list=0x40559ebc) at usr_avp.c:299
>>>299                     avp = avp->next;
>>>(gdb) backtrace
>>>#0  destroy_avp_list_unsafe (list=0x40559ebc) at usr_avp.c:299
>>>#1  0x42308751 in free_cell (dead_cell=0x40559310) at h_table.c:150
>>>#2  0x4231a878 in delete_cell (p_cell=0x40559310, unlock=1) at timer.c:232
>>>#3  0x4231a4c5 in wait_handler (attr=0x40559310) at timer.c:440
>>>#4  0x42319cbe in timer_routine (ticks=11940, attr=0x0) at timer.c:901
>>>#5  0x080753fb in timer_ticker () at timer.c:146
>>>#6  0x080594f6 in main_loop () at main.c:1026
>>>#7  0x0805b3c3 in main (argc=1076797560, argv=0xbffffdb4) at main.c:1786
>
>Cheers,
>Andy
>
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--
Jiri Kuthan            http://iptel.org/~jiri/