[Serusers] Crash in usrloc module [backtrace]

[Jan Janak]

Hello,

this is really strange, the structure could never be filled with zeroes
under normal circumstancies. At least domain and aor must be set to
non-zero value. After the structure is created these fields are automatically
set. And they must be non-zero otherwise the structure would never be
created.

So either gdb doesn't show correct values or the memory has been
corrupted somehow.

Is anything suspicous in your log files ?

  regards, Jan.

On 02-04 22:54, Maxim Sobolev wrote:
> Hi,
> 
> I've observed rather mysterious crash in ser, see attached debug log.
> 
> Any ideas what gives?
> 
> -Maxim

> Script started on Wed Apr  2 11:46:12 2003
> bash-2.05a$ sudo gdb ~/PortaSIP/ser/work/ser-0.8.10/ser ser.core
> GNU gdb 4.18 (FreeBSD)
> Copyright 1998 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "i386-unknown-freebsd"...Deprecated bfd_read called at /usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c line 2627 in elfstab_build_psymtabs
> Deprecated bfd_read called at /usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c line 933 in fill_symbuf
> 
> Core was generated by `ser'.
> Program terminated with signal 11, Segmentation fault.
> Reading symbols from /usr/lib/libc.so.4...done.
> Reading symbols from /usr/local/lib/ser/modules/sl.so...done.
> Reading symbols from /usr/local/lib/ser/modules/tm.so...done.
> Reading symbols from /usr/local/lib/ser/modules/rr.so...done.
> Reading symbols from /usr/local/lib/ser/modules/maxfwd.so...done.
> Reading symbols from /usr/local/lib/ser/modules/usrloc.so...done.
> Reading symbols from /usr/local/lib/ser/modules/registrar.so...done.
> Reading symbols from /usr/local/lib/ser/modules/nathelper.so...done.
> Reading symbols from /usr/local/lib/ser/modules/textops.so...done.
> Reading symbols from /usr/local/lib/ser/modules/radius_auth.so...done.
> Reading symbols from /usr/local/lib/libradiusclient.so.0...done.
> Reading symbols from /usr/lib/libmd.so.2...done.
> Reading symbols from /usr/lib/libcrypt.so.2...done.
> Reading symbols from /usr/libexec/ld-elf.so.1...done.
> #0  0x2a1b0cb3 in nodb_timer (_r=0x282ee1a8) at urecord.c:203
> 203				ptr = ptr->next;
> (gdb) print ptr
> $1 = (ucontact_t *) 0x29647362
> (gdb) print *ptr
> $2 = {domain = 0x0, aor = 0x0, c = {s = 0x0, len = 0}, expires = 0, q = 0, callid = {s = 0x0, 
>     len = 0}, cseq = 0, state = CS_NEW, next = 0x0, prev = 0x0}
> (gdb) bt
> #0  0x2a1b0cb3 in nodb_timer (_r=0x282ee1a8) at urecord.c:203
> #1  0x2a1b02cc in timer_urecord (_r=0x282ee1a8) at urecord.c:333
> #2  0x2a1aae28 in timer_udomain (_d=0x282eadc8) at udomain.c:311
> #3  0x2a1a76d7 in synchronize_all_udomains () at dlist.c:211
> #4  0x2a1af8c9 in timer (ticks=720, param=0x0) at ul_mod.c:234
> #5  0x80735c9 in timer_ticker () at timer.c:118
> #6  0x805e922 in main_loop () at main.c:654
> #7  0x80611b1 in main (argc=1, argv=0xbfbffbe8) at main.c:1383
> #8  0x804c5a6 in _start ()
> (gdb) up
> #1  0x2a1b02cc in timer_urecord (_r=0x282ee1a8) at urecord.c:333
> 333		case NO_DB:         return nodb_timer(_r);
> (gdb) print _r
> $3 = (urecord_t *) 0x282ee1a8
> (gdb) print *_r
> $4 = {domain = 0x282ead78, aor = {s = 0x282ee1e8 "16045215277aa\"\r\nContent-Length: 0\r\n\r\n", 
>     len = 11}, contacts = 0x282eea68, slot = 0x282eb188, d_ll = {prev = 0x282ee088, next = 0x0}, 
>   s_ll = {prev = 0x0, next = 0x0}}
> (gdb) up
> #2  0x2a1aae28 in timer_udomain (_d=0x282eadc8) at udomain.c:311
> 311			if (timer_urecord(ptr) < 0) {
> (gdb) q
> bash-2.05a$ exit
> 
> Script done on Wed Apr  2 11:47:14 2003

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