Date: Tue, 22 Oct 2002 22:56:53 -0400 From: Don Bowman <don@sandvine.com> To: Don Bowman <don@sandvine.com>, "'freebsd-stable@freebsd.org'" <freebsd-stable@freebsd.org>, "'freebsd-net@freebsd.org'" <freebsd-net@freebsd.org> Subject: RE: panic with ipfw / dummynet in 4.7 STABLE Message-ID: <FE045D4D9F7AED4CBFF1B3B813C8533701022D2E@mail.sandvine.com>
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> From: Don Bowman [mailto:don@sandvine.com]
> Take a 4.7 image. Using if_em (if it matters). Turn on
> bridging (em0, em2), add these ipfw rules:
...
Here's the same thing again with -g on.
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1 0xc01b1783 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:316
#2 0xc01b1bdc in poweroff_wait (junk=0xc032b319, howto=-1070420497)
at /usr/src/sys/kern/kern_shutdown.c:595
#3 0xc02cb508 in trap_fatal (frame=0xff807c84, eva=48)
at /usr/src/sys/i386/i386/trap.c:974
#4 0xc02cb199 in trap_pfault (frame=0xff807c84, usermode=0, eva=48)
at /usr/src/sys/i386/i386/trap.c:867
#5 0xc02cad37 in trap (frame={tf_fs = 1714618392, tf_es = -8388592,
tf_ds = -935985136, tf_edi = 0, tf_esi = -935921920, tf_ebp =
-8356660,
tf_isp = -8356688, tf_ebx = -1070251844, tf_edx = 1744882756,
tf_ecx = -424745920, tf_eax = 0, tf_trapno = 12, tf_err = 0,
tf_eip = -1071223279, tf_cs = 8, tf_eflags = 66054, tf_esp =
-935921920,
tf_ss = -935921920}) at /usr/src/sys/i386/i386/trap.c:466
#6 0xc0266e11 in acquire_lock (lk=0xc03540bc) at machine/globals.h:114
#7 0xc026af24 in softdep_update_inodeblock (ip=0xc836f700, bp=0xd49e0184,
waitfor=0) at /usr/src/sys/ufs/ffs/ffs_softdep.c:3813
#8 0xc0265f45 in ffs_update (vp=0xe6aee440, waitfor=0)
at /usr/src/sys/ufs/ffs/ffs_inode.c:106
#9 0xc026e357 in ffs_sync (mp=0xc82af600, waitfor=2, cred=0xc2066700,
p=0xc0382120) at /usr/src/sys/ufs/ffs/ffs_vfsops.c:1025
#10 0xc01e29bf in sync (p=0xc0382120, uap=0x0)
at /usr/src/sys/kern/vfs_syscalls.c:576
#11 0xc01b151e in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:235
#12 0xc01b1bdc in poweroff_wait (junk=0xc032b319, howto=-1070420497)
at /usr/src/sys/kern/kern_shutdown.c:595
#13 0xc02cb508 in trap_fatal (frame=0xff807e74, eva=1073741831)
at /usr/src/sys/i386/i386/trap.c:974
#14 0xc02cb199 in trap_pfault (frame=0xff807e74, usermode=0, eva=1073741831)
at /usr/src/sys/i386/i386/trap.c:867
#15 0xc02cad37 in trap (frame={tf_fs = -935985128, tf_es = -8388592,
tf_ds = -1071644656, tf_edi = -1039546112, tf_esi = -1039546112,
tf_ebp = -8356132, tf_isp = -8356192, tf_ebx = 1073741823,
tf_edx = 1073741823, tf_ecx = -935640092, tf_eax = 0, tf_trapno = 12,
tf_err = 0, tf_eip = -1071626907, tf_cs = 8, tf_eflags = 66054,
tf_esp = 24, tf_ss = -1039697888}) at
/usr/src/sys/i386/i386/trap.c:466
#16 0xc0204565 in dummynet_io (m=0xc209c900, pipe_nr=1, dir=2,
fwa=0xff807f34)
at /usr/src/sys/netinet/ip_dummynet.c:1103
#17 0xc020991c in ip_input (m=0xc209c900)
at /usr/src/sys/netinet/ip_input.c:459
#18 0xc0209ec7 in ipintr () at /usr/src/sys/netinet/ip_input.c:843
#19 0xc02bca91 in swi_net_next ()
(kgdb) l
1098 * this is a dummynet rule, so we expect a O_PIPE or O_QUEUE
rule
1099 */
1100 fs = locate_flowset(pipe_nr, fwa->rule);
1101 if (fs == NULL)
1102 goto dropit ; /* this queue/pipe does not exist! */
1103 pipe = fs->pipe ; <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
1104 if (pipe == NULL) { /* must be a queue, try find a matching pipe
*/
1105 for (pipe = all_pipes; pipe && pipe->pipe_nr !=
fs->parent_nr;
1106 pipe = pipe->next)
1107 ;
(kgdb) p fs
$1 = (struct dn_flow_set *) 0x3fffffff <<<<<<<< ILLEGAL VALUE
(kgdb) p pipe_nr
$6 = 1714618368
(kgdb) p/x pipe_nr
$7 = 0x66330000
(kgdb) p/x fwa
$8 = 0xff807f34
(kgdb) p/x fwa->rule
$9 = 0xc83b43c0
(kgdb) p/x *fwa->rule
$10 = {next = 0xc83c2900, next_rule = 0x0, act_ofs = 0x0, cmd_len = 0x4,
rulenum = 0x154, set = 0x0, _pad = 0x0, pcnt = 0x1, bcnt = 0x20,
timestamp = 0x3db60b9b, cmd = {{opcode = 0x29, len = 0x2, arg1 = 0x0}}}
(kgdb)
--don (don@sandvine.com www.sandvine.com)
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