3 Apr
2003
3 Apr
'03
12:50 a.m.
On Wed, Apr 02, 2003 at 10:33:36PM +0200, Jan Janak wrote:
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.
Yes, it looks like that, because ptr is a valid pointer in the trace
and ptr->next shouldn't cause sig11. Maybe there is a problem with
locking? Is it possible that two or more processes would start
modifying _r linked list simulateneously, therefore breaking its
integrity?
-Maxim
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
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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