Le 19/11/2004 � 13:08, Robert Watson a �crit:
>
> Using the core, could you also print the contents of *so and
> *so->so_snd.sb_mb in the tcp_output frame?
Using SOCKBUF_DEBUG I get a little different backtrace :
(kgdb) bt
#0 doadump () at ../../../kern/kern_shutdown.c:245
#1 0x00000000c0141d50 in boot (howto=260) at ../../../kern/kern_shutdown.c:396
#2 0x00000000c01421f8 in panic (fmt=0xc0359ad0 "from debugger") at
../../../kern/kern_shutdown.c:552
#3 0x00000000c007a3c8 in db_panic (addr=3222674300, have_addr=0, count=-1,
modif=0xe236c4b0 "") at ../../../ddb/db_command.c:435
#4 0x00000000c007a32c in db_command (last_cmdp=0xc03c6ee8, cmd_table=0x0,
aux_cmd_tablep=0xc0385358, aux_cmd_tablep_end=0xc0385370)
at ../../../ddb/db_command.c:349
#5 0x00000000c007a450 in db_command_loop () at ../../../ddb/db_command.c:455
#6 0x00000000c007cf70 in db_trap (type=-499726656, code=0) at
../../../ddb/db_main.c:219
#7 0x00000000c0161fa0 in kdb_trap (type=107, code=0, tf=0x1) at
../../../kern/subr_kdb.c:418
#8 0x00000000c02da1c0 in trap (tf=0xe236c940) at
../../../sparc64/sparc64/trap.c:308
#9 0x00000000c0161b7c in kdb_enter (msg=0x0) at ../../../kern/subr_kdb.c:238
#10 0x00000000c0161b74 in kdb_enter (msg=0xc0369d40 "panic") at
../../../kern/subr_kdb.c:238
#11 0x00000000c0142108 in panic (fmt=0xc0382050 "trap: %s") at
../../../kern/kern_shutdown.c:536
#12 0x00000000c02da34c in trap (tf=0xe236cd40) at
../../../sparc64/sparc64/trap.c:370
#13 0x00000000c018622c in m_copym (m=0xfffff800a2d7a800, off0=0,
len=-499724272, wait=1) at ../../../kern/uipc_mbuf.c:376
#14 0x00000000c02baa40 in uma_zalloc_arg (zone=0x0, udata=0x1, flags=1460) at
../../../vm/uma_core.c:1826
#15 0x00000000c01efbcc in tcp_output (tp=0xfffff800a1e2b378) at
../../../netinet/tcp_output.c:803
#16 0x00000000c01f9c58 in tcp_disconnect (tp=0xfffff800a1e2b378) at
../../../netinet/tcp_usrreq.c:1215
#17 0x00000000c01f75a8 in tcp_usr_detach (so=0xfffff800a332d690) at
../../../netinet/tcp_usrreq.c:168
#18 0x00000000c0188f8c in soclose (so=0xfffff800a2490ac8) at
../../../kern/uipc_socket.c:465
#19 0x00000000c017586c in soo_close (fp=0xfffff8008838cee0,
td=0xfffff800a2d9ea40) at ../../../kern/sys_socket.c:274
#20 0x00000000c011c948 in fdrop_locked (fp=0xfffff8008838cee0,
td=0xfffff800a2d9ea40) at file.h:289
#21 0x00000000c011b3e4 in fdrop (fp=0xfffff8008838cee0, td=0xfffff800a2d9ea40)
at ../../../kern/kern_descrip.c:1897
#22 0x00000000c011b384 in closef (fp=0xfffff8008838cee0, td=0xfffff800a2d9ea40)
at ../../../kern/kern_descrip.c:1883
#23 0x00000000c0119498 in close (td=0xfffff800a2d9ea40, uap=0xfffff800a3cda800)
at ../../../kern/kern_descrip.c:997
#24 0x00000000c02da914 in syscall (tf=0xe236d880) at
../../../sparc64/sparc64/trap.c:593
Here are *so & *so->so_snd.sb_mb :
(kgdb)
#15 0x00000000c01efbcc in tcp_output (tp=0xfffff800a1e2b378) at
../../../netinet/tcp_output.c:803
803 m->m_next = m_copy(so->so_snd.sb_mb, off, (int)
len);
(kgdb) print *so
$1 = {so_count = 1, so_type = 1, so_options = 12, so_linger = 0, so_state = 10,
so_qstate = 0, so_pcb = 0xfffff800a332d690, so_proto = 0xc03ae290,
so_head = 0x0, so_incomp = {tqh_first = 0x0, tqh_last = 0x0}, so_comp =
{tqh_first = 0x0, tqh_last = 0x0}, so_list = {tqe_next = 0x0,
tqe_prev = 0xfffff800a41893a0}, so_qlen = 0, so_incqlen = 0, so_qlimit = 0,
so_timeo = 0, so_error = 0, so_sigio = 0x0, so_oobmark = 0, so_aiojobq = {
tqh_first = 0x0, tqh_last = 0xfffff800a2490b40}, so_rcv = {sb_sel =
{si_thrlist = {tqe_next = 0x0, tqe_prev = 0x0}, si_thread = 0x0, si_note = {
kl_lock = 0xfffff800a2490b80, kl_list = {slh_first = 0x0}}, si_flags =
0}, sb_mtx = {mtx_object = {lo_class = 0xc03a1050,
lo_name = 0xc036d9e0 "so_rcv", lo_type = 0xc036d9e0 "so_rcv", lo_flags
= 196608, lo_list = {tqe_next = 0x0, tqe_prev = 0x0}, lo_witness = 0x0},
mtx_lock = 4, mtx_recurse = 0}, sb_mb = 0x0, sb_mbtail = 0x0,
sb_lastrecord = 0x0, sb_cc = 0, sb_hiwat = 65536, sb_mbcnt = 0, sb_mbmax =
262144,
sb_ctl = 0, sb_lowat = 1, sb_timeo = 0, sb_flags = 0, sb_state = 32},
so_snd = {sb_sel = {si_thrlist = {tqe_next = 0x0, tqe_prev = 0x0},
si_thread = 0x0, si_note = {kl_lock = 0xfffff800a2490c30, kl_list =
{slh_first = 0x0}}, si_flags = 0}, sb_mtx = {mtx_object = {
lo_class = 0xc03a1050, lo_name = 0xc036d9d8 "so_snd", lo_type =
0xc036d9d8 "so_snd", lo_flags = 196608, lo_list = {tqe_next = 0x0,
tqe_prev = 0x0}, lo_witness = 0x0}, mtx_lock = 18446735280348719680,
mtx_recurse = 0}, sb_mb = 0xfffff800a2532400,
sb_mbtail = 0xfffff800a4055600, sb_lastrecord = 0xfffff800a2532400, sb_cc =
64740, sb_hiwat = 65536, sb_mbcnt = 67584, sb_mbmax = 262144, sb_ctl = 0,
sb_lowat = 2048, sb_timeo = 0, sb_flags = 0, sb_state = 16}, so_upcall = 0,
so_upcallarg = 0x0, so_cred = 0xfffff8008427d000, so_label = 0x0,
so_peerlabel = 0x0, so_gencnt = 344, so_emuldata = 0x0, so_accf = 0x0}
(kgdb) print *so->so_snd.sb_mb
$2 = {m_hdr = {mh_next = 0xfffff800a293cc00, mh_nextpkt = 0x0, mh_data =
0xdf84631c "\205", mh_len = 7396, mh_flags = 11, mh_type = 1}, M_dat = {MH = {
MH_pkthdr = {rcvif = 0x0, len = 8192, header = 0x0, csum_flags = 0,
csum_data = 16, tags = {slh_first = 0x0}}, MH_dat = {MH_ext = {
ext_buf = 0xdf846000 "�P�é\214�2H�q\003\216\006\003.\004&[EMAIL
PROTECTED],8\030\214��o0c8�Ѽ�I\215\f�K\026��J�\fu�i��V\223�\231\202Q\2234\220�Zu<f\206�",
ext_free = 0xc0192840 <sf_buf_mext>, ext_args = 0xc0850880, ext_size = 8192,
ref_cnt = 0xfffff800a3d7ecc0, ext_type = 2},
MH_databuf = "\0\0\0\0�\204`\0\0\0\0\0�\031(@\0\0\0\0�\205\b\200\0\0
\0��?\002���\0����\0\0\0\002����P\020����\0\0150-Accepted data
connection\r\n15<95>Nov 19 16:57:56 pure-ftpd[458]: ([EMAIL PROTECTED]) [DEBUG]
Command [pasv] []\0\0\0\0\0"}},
M_databuf = "\0\0\0\0\0\0\0\0\0\0 ", '\0' <repeats 20 times>, "\020", '\0'
<repeats 12 times>, "�\204`\0\0\0\0\0�\031(@\0\0\0\0�\205\b\200\0\0
\0��?\002���\0����\0\0\0\002����P\020����\0\0150-Accepted data
connection\r\n15<95>Nov 19 16:57:56 pure-ftpd[458]: ([EMAIL PROTECTED]) [DEBUG]
Command [pasv] []\0\0"...}}
--
Herve Boulouis
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