[Bug 284606] Kernel Panic with ipfw

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=284606

vova@fbsd.ru changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vova@fbsd.ru

--- Comment #11 from vova@fbsd.ru ---
(In reply to vova from comment #10)

for the non-debug kernel - mbuf contents on 

(kgdb) fr 9
#9  0xffffffff80cdc251 in ip_input (m=0xfffff8020f13a500) at
/usr/src/sys/netinet/ip_input.c:587
587   if ((m = ip_tryforward(m)) == NULL)

(kgdb) p *m
$8 = {{m_next = 0xfffff802220fbc00, m_slist = {sle_next = 0xfffff802220fbc00},
m_stailq = {stqe_next = 0xfffff802220fbc00}}, {m_nextpkt = 0x0, m_slistpkt =
{sle_next = 0x0}, m_stailqpkt = {stqe_next = 0x0}}, m_data = 0xfffff8020f13a570
"E", m_len = 44, m_type = 1, m_flags = 2, {{{m_pkthdr = {{snd_tag =
0xfffff8019c449000, rcvif = 0xfffff8019c449000, {rcvidx = 36864, rcvgen =
40004}}, {leaf_rcvif = 0x0, {leaf_rcvidx = 0,
              leaf_rcvgen = 0}}, tags = {slh_first = 0x0}, len = 589, flowid =
1323187103, csum_flags = 0, fibnum = 0, numa_domain = 255 '\377', rsstype = 0
'\000', {rcv_tstmp = 0, {l2hlen = 0 '\000', l3hlen = 0 '\000', l4hlen = 0
'\000', l5hlen = 0 '\000', inner_l2hlen = 0 '\000', inner_l3hlen = 0 '\000',
inner_l4hlen = 0 '\000', inner_l5hlen = 0 '\000'}}, PH_per = {eight =
"\000\000\000\000\000\000\000", sixteen = {0, 0,
              0, 0}, thirtytwo = {0, 0}, sixtyfour = {0}, unintptr = {0}, ptr =
0x0}, {PH_loc = {eight = "\000\000\000\000\000\000\000", sixteen = {0, 0, 0,
0}, thirtytwo = {0, 0}, sixtyfour = {0}, unintptr = {0}, ptr = 0x0}, memlen =
0}}, {m_epg_npgs = 0 '\000', m_epg_nrdy = 144 '\220', m_epg_hdrlen = 68 'D',
m_epg_trllen = 156 '\234', m_epg_1st_off = 63489, m_epg_last_len = 65535,
m_epg_flags = 0 '\000',
          m_epg_record_type = 0 '\000', __spare = "\000", m_epg_enc_cnt = 0,
m_epg_tls = 0x0, m_epg_so = 0x4ede3b9f0000024d, m_epg_seqno =
71776119061217280, m_epg_stailq = {stqe_next = 0x0}}}, {m_ext = {{ext_count =
4189736551, ext_cnt = 0x159a9294f9ba4e67}, ext_size = 6162, ext_type = 0,
ext_flags = 0, {{ext_buf = 0x4000004d020045 <error: Cannot access memory at
address 0x4000004d020045>, ext_arg2 = 0x70416ac86e7063f}, {
              extpg_pa = {18014399801458757, 505553988425811519,
13475177729205796113, 3215111323, 84116934427344}, extpg_trail =
"\002\004\004\330\001\003\003\n\004\002\b\n,\300\016K\202\304q\023\250\325\001\000\000\001\000\000\000\000\000\000\006zabbix\004fbsd\002r\000\037\312$\364\033\230\267\205\037x\216\b\000E\000\005<",
extpg_hdr =
"0\337\000\000@\021\223ڬ\026\002\am\374\224\336\3229\005l\005(\266"}},
          ext_free = 0x0, ext_arg1 = 0x0}, m_pktdat = 0xfffff8020f13a560
"gN\272\371\224\222\232\025\022\030"}}, m_dat = 0xfffff8020f13a520 ""}}
(kgdb) p *m->m_next
$9 = {{m_next = 0x0, m_slist = {sle_next = 0x0}, m_stailq = {stqe_next = 0x0}},
{m_nextpkt = 0x0, m_slistpkt = {sle_next = 0x0}, m_stailqpkt = {stqe_next =
0x0}}, m_data = 0xfffff80036e0d858 "\001\003\003\006\001\001\b\n\276\323\312i",
m_len = 545, m_type = 1, m_flags = 1, {{{m_pkthdr = {{snd_tag =
0xfffff80004f5e800, rcvif = 0xfffff80004f5e800, {rcvidx = 59392, rcvgen =
1269}}, {leaf_rcvif = 0x0, {leaf_rcvidx = 0,
              leaf_rcvgen = 0}}, tags = {slh_first = 0x0}, len = 624, flowid =
1323187103, csum_flags = 251658240, fibnum = 0, numa_domain = 255 '\377',
rsstype = 63 '?', {rcv_tstmp = 0, {l2hlen = 0 '\000', l3hlen = 0 '\000', l4hlen
= 0 '\000', l5hlen = 0 '\000', inner_l2hlen = 0 '\000', inner_l3hlen = 0
'\000', inner_l4hlen = 0 '\000', inner_l5hlen = 0 '\000'}}, PH_per = {eight =
"\000\000\000\000\377\377\000", sixteen = {
              0, 0, 65535, 0}, thirtytwo = {0, 65535}, sixtyfour =
{281470681743360}, unintptr = {281470681743360}, ptr = 0xffff00000000}, {PH_loc
= {eight = "\000\000\000\000\000\000\000", sixteen = {0, 0, 0, 0}, thirtytwo =
{0, 0}, sixtyfour = {0}, unintptr = {0}, ptr = 0x0}, memlen = 0}}, {m_epg_npgs
= 0 '\000', m_epg_nrdy = 232 '\350', m_epg_hdrlen = 245 '\365', m_epg_trllen =
4 '\004', m_epg_1st_off = 63488,
          m_epg_last_len = 65535, m_epg_flags = 0 '\000', m_epg_record_type = 0
'\000', __spare = "\000", m_epg_enc_cnt = 0, m_epg_tls = 0x0, m_epg_so =
0x4ede3b9f00000270, m_epg_seqno = 4611404543702335488, m_epg_stailq =
{stqe_next = 0x0}}}, {m_ext = {{ext_count = 1, ext_cnt = 0x1}, ext_size = 2048,
ext_type = 6, ext_flags = 1, {{ext_buf = 0xfffff80036e0d800
"E\030\002\214-\276", ext_arg2 = 0x0}, {extpg_pa = {
                18446735278537234432, 0, 0, 0, 0}, extpg_trail = '\000'
<repeats 63 times>, extpg_hdr = '\000' <repeats 22 times>}}, ext_free = 0x0,
ext_arg1 = 0x0}, m_pktdat = 0xfffff802220fbc60 "\001"}}, m_dat =
0xfffff802220fbc20 ""}}

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