Date: Fri, 14 Jan 2000 00:43:44 +0900 From: Jun Kuriyama <kuriyama@sky.rim.or.jp> To: wpaul@skynet.ctr.columbia.edu Cc: current@freebsd.org Subject: Re: panic in uipc_mbuf.c or if_aue.c Message-ID: <14461.62128.675464.13362J@localhost.sky.rim.or.jp> In-Reply-To: In your message of "Wed, 12 Jan 2000 10:40:59 -0500 (EST)" <200001121541.KAA23708@skynet.ctr.columbia.edu> References: <14460.40191.708206.82051O@localhost.sky.rim.or.jp> <200001121541.KAA23708@skynet.ctr.columbia.edu>
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From: Bill Paul <wpaul@skynet.ctr.columbia.edu>
> We need version information! How recent is your version of -current!
> What's the rcsid from if_aue.c! Details please!
* $FreeBSD: src/sys/dev/usb/if_aue.c,v 1.5 2000/01/10 23:12:50 wpaul Exp $
> Print out the contents of the mbuf!! Show is what it thinks the real
> length is!
I replaced binary data to "...data..." which may confuse mail agent.
I don't know this is enough or not. Please let me know if you want
more information. I'll update if_aue.c to v1.6 and try without IPFW.
(kgdb) up 11
#11 0xc021b7af in aue_encap (sc=0xc0828600, m=0xc05d4e00, idx=0)
at ../../dev/usb/if_aue.c:1107
l1107 m_copydata(m, 0, m->m_pkthdr.len, c->aue_buf + 2);
(kgdb) list
1102
1103 /*
1104 * Copy the mbuf data into a contiguous buffer, leaving two
1105 * bytes at the beginning to hold the frame length.
1106 */
1107 m_copydata(m, 0, m->m_pkthdr.len, c->aue_buf + 2);
1108 c->aue_mbuf = m;
1109
1110 /*
1111 * XXX I don't understand why, but transfers that
(kgdb) print *m
$1 = {m_hdr = {mh_next = 0xc05ac100, mh_nextpkt = 0x0,
mh_data = 0xc05d4e22 "", mh_len = 54, mh_type = 2, mh_flags = 2}, M_dat = {
MH = {MH_pkthdr = {rcvif = 0x0, len = 1514, header = 0x280602bc "\""},
MH_dat = {MH_ext = {
ext_buf = 0x30005000 <Address 0x30005000 out of bounds>,
ext_free = 0x311a0043, ext_size = 1629896704, ext_ref = 0x8c710},
MH_databuf = "...data...", '\000' <repeats 41 times>}},
M_databuf = "...data...", '\000' <repeats 41 times>}}
(kgdb) print *m->m_hdr.mh_next
$2 = {m_hdr = {mh_next = 0x0, mh_nextpkt = 0x0,
mh_data = 0xc05cd800 "...data..."...,
mh_len = 284, mh_type = 1, mh_flags = 1}, M_dat = {MH = {MH_pkthdr = {
rcvif = 0xc0828600, len = 60, header = 0x280602bc "\""}, MH_dat = {
MH_ext = {
ext_buf = 0xc05cd800 "...data..."...,
ext_free = 0, ext_size = 2048, ext_ref = 0},
MH_databuf = "...data..."}},
M_databuf = "...data..."}}
(kgdb)
Jun Kuriyama // kuriyama@sky.rim.or.jp
// kuriyama@FreeBSD.org
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