[asterisk-dev] A question of "sound_thread: select failed:
Interrupted system call"
andy wang
ypwangreg at gmail.com
Sun Dec 24 23:02:49 MST 2006
Dear Developer:
I understand that now 1.4.0 has not supposed to support the cygwin but
it's to me just fun so I ask this question here.
I tried to run asterisk 1.4.0 in cygwin. now the problem is (compared
to linux) I registered sip client and dial 500 which will first handle
by chan_sip (till now everything is ok) then by chan_iax2, after the
iax2 channel is established I met 2 problems: the one is as title.
every 10 seconds, it seems a signal woke up chan_oss::sound_thread's
select but I can't find where is the signal? and why it is always 10s
period.
[Dec 24 23:22:22] WARNING[804]: chan_iax2.c:8096 network_thread:
chan_iax2:network_thread 1023DD64 [Dec 24 23:22:43] W
NING[804]: chan_oss.c:634 sound_thread: select failed: Interrupted system call
[Dec 24 23:22:43] WARNING[804]: chan_oss.c:634 sound_thread: select
failed: Interrupted system call
[Dec 24 23:22:43] WARNING[804]: chan_oss.c:634 sound_thread: select
failed: Interrupted system call
[Dec 24 23:22:43] WARNING[804]: chan_oss.c:634 sound_thread: select
failed: Interrupted system call
[Dec 24 23:22:43] WARNING[804]: chan_oss.c:634 sound_thread: select
failed: Interrupted system call
[Dec 24 23:22:43] WARNING[804]: chan_oss.c:634 sound_thread: select
failed: Interrupted system call
[Dec 24 23:22:53] WARNING[804]: chan_oss.c:634 sound_thread: select
failed: Interrupted system call
[Dec 24 23:22:53] WARNING[804]: chan_oss.c:634 sound_thread: select
failed: Interrupted system call
[Dec 24 23:22:53] WARNING[804]: chan_oss.c:634 sound_thread: select
failed: Interrupted system call
[Dec 24 23:22:53] WARNING[804]: chan_oss.c:634 sound_thread: select
failed: Interrupted system call
The second question is: sometimes (1 in 2 calls, I mean 50%
possibility) it will lead to a coredump which I think it may be
threading lock problems but since the thread stack was corrupt so I
can't find it right now but still trying ....
Program received signal SIGSEGV, Segmentation fault.
[Switching to thread 804.0xb84]
0x00458072 in ast_io_wait (ioc=0x10, howlong=90689392) at io.c:271
271 origcnt = ioc->fdcnt;
(gdb) bt
#0 0x00458072 in ast_io_wait (ioc=0x10, howlong=90689392) at io.c:271
#1 0x61092b95 in _sigbe () from /usr/bin/cygwin1.dll
#2 0x00000000 in ?? ()
(gdb) up 1
#1 0x61092b95 in _sigbe () from /usr/bin/cygwin1.dll
(gdb) bt
#0 0x00458072 in ast_io_wait (ioc=0x10, howlong=90689392) at io.c:271
#1 0x61092b95 in _sigbe () from /usr/bin/cygwin1.dll
#2 0x00000000 in ?? ()
(gdb) up 1
#2 0x00000000 in ?? ()
(gdb) down 1
#1 0x61092b95 in _sigbe () from /usr/bin/cygwin1.dll
(gdb) l
266 res = poll(ioc->fds, ioc->fdcnt, howlong);
267 if (res > 0) {
268 /*
269 * At least one event
270 */
271 origcnt = ioc->fdcnt;
272 for(x = 0; x < origcnt; x++) {
273 /* Yes, it is possible for an entry to
be deleted and still have an
274 event waiting if it occurs after
the original calling id */
275 if (ioc->fds[x].revents && ioc->ior[x].id) {
(gdb) info threads
40 thread 804.0xa7c 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
39 thread 804.0x948 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
36 thread 804.0x108 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
35 thread 804.0x6a4 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
* 34 thread 804.0xb84 0x00458072 in ast_io_wait (ioc=0x10,
howlong=90689392) at io.c:271
33 thread 804.0xde0 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
32 thread 804.0x7c4 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
31 thread 804.0x830 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
30 thread 804.0xedc 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
29 thread 804.0xefc 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
28 thread 804.0x9fc 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
27 thread 804.0x858 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
26 thread 804.0x2e4 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
25 thread 804.0x850 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
24 thread 804.0xc80 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
23 thread 804.0xa24 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
22 thread 804.0xf50 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
21 thread 804.0x45c 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
20 thread 804.0x424 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
19 thread 804.0xb18 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
18 thread 804.0x2cc 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
17 thread 804.0xba4 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
16 thread 804.0x8d4 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
15 thread 804.0x6b4 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
14 thread 804.0xfc0 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
13 thread 804.0x5d8 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
12 thread 804.0xd78 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
11 thread 804.0xaa0 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
10 thread 804.0x880 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
9 thread 804.0x814 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
8 thread 804.0x90c 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
7 thread 804.0x4e0 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
6 thread 804.0x7d4 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
4 thread 804.0x3d4 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
3 thread 804.0x950 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
2 thread 804.0x284 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
1 thread 804.0xf2c 0x7c92eb94 in ntdll!LdrAccessResource () from
/cygdrive/c/WINDOWS/system32/ntdll.dll
(gdb)
(gdb) bt
#0 0x00458072 in ast_io_wait (ioc=0x10, howlong=90689392) at io.c:271
#1 0x61092b95 in _sigbe () from /usr/bin/cygwin1.dll
#2 0x00000000 in ?? ()
(gdb) info reg
eax 0x10 16
ecx 0xf 15
edx 0x415401 4281345
ebx 0x10 16
esp 0x567cc6c 0x567cc6c
ebp 0x567cc9c 0x567cc9c
esi 0x4154cb 4281547
edi 0x567ce64 90689124
eip 0x61092b95 0x61092b95
eflags 0x10202 66050
cs 0x1b 27
ss 0x23 35
ds 0x23 35
es 0x23 35
fs 0x3b 59
gs 0x0 0
(gdb) x/64x 0x567cc50
0x567cc50: 0x004154cb 0x05680000 0x004154cb 0x00000010
0x567cc60: 0x004154cb 0x0567cc9c 0x61092b95 0x00000010
0x567cc70: 0x0567cf70 0x00000000 0x00000000 0x00000004
0x567cc80: 0xffffffff 0x1026f32c 0x61106b24 0xffffffff
0x567cc90: 0x0567ce64 0x1024f9b8 0x00000246 0x0567ccc8
0x567cca0: 0x1023ddec 0x00000001 0xffffffff 0x10065e54
0x567ccb0: 0x006fd2d3 0x458f5227 0xfffffff7 0x00000000
0x567ccc0: 0x1026f32c 0x1024f9b8 0x0567cd18 0x0056b864
0x567ccd0: 0x1023dd64 0xffffffff 0x007016c2 0x006fdc1f
0x567cce0: 0x00676c38 0x1023dd64 0x0567ccf8 0x00000000
0x567ccf0: 0x00000000 0x0567cd40 0x00000000 0x00000000
0x567cd00: 0x00000000 0x00000000 0xffffffff 0x00000000
0x567cd10: 0x00000001 0x1024fa10 0x0567cd78 0x004ad006
0x567cd20: 0x00000000 0x006c25e3 0x0000021e 0x006c2925
0x567cd30: 0x00412f87 0x1024f9b8 0x00000000 0x77dadb0d
0x567cd40: 0x00412f87 0x1024f9b8 0x00000000 0x1024fa10
(gdb)
Regards,
Andy
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