Date: Mon, 15 Jan 2007 12:40:23 GMT From: Olexandr Davydenko <o.davydenko@gmail.com> To: freebsd-ipfw@FreeBSD.org Subject: Re: kern/106534: [ipfw] [panic] ipfw + dummynet Message-ID: <200701151240.l0FCeNUV042057@freefall.freebsd.org>
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The following reply was made to PR kern/106534; it has been noted by GNATS.
From: Olexandr Davydenko <o.davydenko@gmail.com>
To: bug-followup@FreeBSD.org
Cc:
Subject: Re: kern/106534: [ipfw] [panic] ipfw + dummynet
Date: Mon, 15 Jan 2007 14:20:22 +0200
Similar problem with ipfw + dummynet and 132 pipes for traffic shaping:
sometimes panic when trafshow run and put interface in promiscuous
mode or in any another time.
FreeBSD 6.1-RELEASE-p10 #1: Wed Oct 4 12:46:05 EEST 2006
root@xxx:/server/OBJ/server/SRC/RELENG_6_1/sys/xxx
# ifconfig
fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=48<VLAN_MTU,POLLING>
ether 00:90:27:10:33:b4
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
fxp1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=48<VLAN_MTU,POLLING>
ether 00:30:48:22:58:79
media: Ethernet 100baseTX <full-duplex>
status: active
fxp2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=48<VLAN_MTU,POLLING>
ether 00:30:48:22:58:7a
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet 127.0.0.1 netmask 0xff000000
kgdb output:
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd".
Unread portion of the kernel message buffer:
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xc
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc0516ffb
stack pointer = 0x28:0xcbd36b60
frame pointer = 0x28:0xcbd36b84
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 12 (swi4: clock sio)
trap number = 12
panic: page fault
Uptime: 29d17h3m30s
Dumping 254 MB (2 chunks)
chunk 0: 1MB (159 pages) ... ok
chunk 1: 254MB (65024 pages) 239 223 207 191 175 159 143 127 111 95 79 63 47 31 15
#0 doadump () at pcpu.h:165
in pcpu.h
(kgdb) bt
#0 doadump () at pcpu.h:165
#1 0xc04e1b65 in boot (howto=260) at /server/SRC/RELENG_6_1/sys/kern/kern_shutdown.c:402
#2 0xc04e1dfc in panic (fmt=0xc063e3b0 "%s") at /server/SRC/RELENG_6_1/sys/kern/kern_shutdown.c:558
#3 0xc06254fc in trap_fatal (frame=0xcbd36b20, eva=12) at /server/SRC/RELENG_6_1/sys/i386/i386/trap.c:836
#4 0xc0625263 in trap_pfault (frame=0xcbd36b20, usermode=0, eva=12)
at /server/SRC/RELENG_6_1/sys/i386/i386/trap.c:744
#5 0xc0624ec1 in trap (frame=
{tf_fs = 8, tf_es = 40, tf_ds = 40, tf_edi = -1014294700, tf_esi = 320, tf_ebp = -875336828, tf_isp = -875336884, tf_ebx = -1014294784, tf_edx = 0, tf_ecx = -1026586592, tf_eax = 0, tf_trapno = 12, tf_err = 0, tf_eip = -1068404741, tf_cs = 32, tf_eflags = 590338, tf_esp = 0, tf_ss = -875336824})
at /server/SRC/RELENG_6_1/sys/i386/i386/trap.c:434
#6 0xc06153ba in calltrap () at /server/SRC/RELENG_6_1/sys/i386/i386/exception.s:139
#7 0xc0516ffb in m_copym (m=0x0, off0=1500, len=1480, wait=1)
at /server/SRC/RELENG_6_1/sys/kern/uipc_mbuf.c:400
#8 0xc056bff8 in ip_fragment (ip=0xc2cf8820, m_frag=0xcbd36c3c, mtu=-1014294784, if_hwassist_flags=0,
sw_csum=1) at /server/SRC/RELENG_6_1/sys/netinet/ip_output.c:975
#9 0xc056bc9e in ip_output (m=0xc33a1c00, opt=0xc1d8e000, ro=0xcbd36c08, flags=1, imo=0x0, inp=0x0)
at /server/SRC/RELENG_6_1/sys/netinet/ip_output.c:804
#10 0xc055ef71 in dummynet_send (m=0xc33a1c00) at /server/SRC/RELENG_6_1/sys/netinet/ip_dummynet.c:771
#11 0xc055ef04 in dummynet (unused=0x0) at /server/SRC/RELENG_6_1/sys/netinet/ip_dummynet.c:753
#12 0xc04edc97 in softclock (dummy=0x0) at /server/SRC/RELENG_6_1/sys/kern/kern_timeout.c:290
#13 0xc04cc391 in ithread_execute_handlers (p=0xc1d97830, ie=0xc1d95600)
at /server/SRC/RELENG_6_1/sys/kern/kern_intr.c:684
#14 0xc04cc4a8 in ithread_loop (arg=0xc1d83780) at /server/SRC/RELENG_6_1/sys/kern/kern_intr.c:767
#15 0xc04cb300 in fork_exit (callout=0xc04cc454 <ithread_loop>, arg=0xc1d83780, frame=0xcbd36d38)
at /server/SRC/RELENG_6_1/sys/kern/kern_fork.c:805
#16 0xc061541c in fork_trampoline () at /server/SRC/RELENG_6_1/sys/i386/i386/exception.s:208
(kgdb) up 7
#7 0xc0516ffb in m_copym (m=0x0, off0=1500, len=1480, wait=1)
at /server/SRC/RELENG_6_1/sys/kern/uipc_mbuf.c:400
400 if (off < m->m_len)
(kgdb) list
395 MBUF_CHECKSLEEP(wait);
396 if (off == 0 && m->m_flags & M_PKTHDR)
397 copyhdr = 1;
398 while (off > 0) {
399 KASSERT(m != NULL, ("m_copym, offset > size of mbuf chain"));
400 if (off < m->m_len)
401 break;
402 off -= m->m_len;
403 m = m->m_next;
404 }
(kgdb) quit
--
WBR,
Davidenko Alexandr
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