Date: Sun, 27 Jun 2010 18:30:04 GMT From: Shant Kassardjian <pookme@hotmail.com> To: freebsd-ipfw@FreeBSD.org Subject: RE: amd64/148157: IPFW in kernel nat BUG found in FreeBSD 8.1-PRERELEASE Message-ID: <201006271830.o5RIU4vC093836@freefall.freebsd.org>
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The following reply was made to PR amd64/148157; it has been noted by GNATS.
From: Shant Kassardjian <pookme@hotmail.com>
To: <yanefbsd@gmail.com>
Cc: <freebsd-gnats-submit@freebsd.org>
Subject: RE: amd64/148157: IPFW in kernel nat BUG found in FreeBSD
8.1-PRERELEASE
Date: Sun, 27 Jun 2010 18:25:25 +0000
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> Date: Sun=2C 27 Jun 2010 00:04:16 -0700
> Subject: Re: amd64/148157: IPFW in kernel nat BUG found in FreeBSD 8.1-P=
RERELEASE
> From: yanefbsd@gmail.com
> To: pookme@hotmail.com
> CC: freebsd-gnats-submit@freebsd.org
>=20
> Hi Shant=2C
> Please bottom post from here on out.
>=20
> On Sat=2C Jun 26=2C 2010 at 11:47 PM=2C Shant Kassardjian <pookme@hotmail=
.com> wrote:
> > Hi Garrett=2C
> >
> >
> > I just tried to perform a kernel dump with dumpdev=3D"YES" and had no l=
uck=2C I
> > keep getting:
>=20
> dumpdev=3D"<blah>" always appears to fail to me as well (contrary to
> what others have claimed). Try doing the following after booting up:
>=20
> dumpon `awk '$3 =3D=3D swap { print $1 }'`
>=20
> Then you'll be able to reproduce the problem and grab the resulting
> kernel core dump.
Hi Garrett=2C
I still can't get it to dump. Perhaps it's because my system does not have =
any swap space allocated?
Here's what I added in my /etc/rc.conf to simulate an swap device:
dumpdev=3D"YES"
dumpdir=3D"/home/crash/"
swapfile=3D"/home/crash/swap0"
Then I ran:
core# sh /tmp/ipfw_test =
~
00001 nat 100 ip from any to any via em0
ipfw nat 100 config ip 192.168.1.104 redirect_port tcp 172.25.1.1:22 22
core# dumpon `awk '$3 =3D=3D swap { print $1 }'` =
~
Fatal trap 12: page fault while in kernel mode
cpuid =3D 0=3B apic id =3D 00
fault virtual address =3D 0xc
fault code =3D supervisor write data=2C page not present
instruction pointer =3D 0x20:0xffffffff801d5cd6
stack pointer =3D 0x28:0xffffff8074fbc370
frame pointer =3D 0x28:0xffffff8074fbc620
code segment =3D base 0x0=2C limit 0xfffff=2C type 0x1b
=3D DPL 0=2C pres 1=2C long 1=2C def32 0=2C gran 1
processor eflags =3D interrupt enabled=2C resume=2C IOPL =3D 0
current process =3D 1818 (sshd)
trap number =3D 12
panic: page fault
cpuid =3D 0
Uptime: 2m36s
Cannot dump. Device not defined or unavailable.
Automatic reboot in 15 seconds - press a key on the console to abort
I'm still getting the "Cannot dump" error message=2C any idea what I can do=
next?
Many thanks.
Shant K
>=20
> > Cannot dump. Device not defined or unavailable.
> >
> > my custom kernel is set to disable:
> >
> >
> > #options KTRACE # ktrace(1) support
> >
> > #options KDTRACE_FRAME # Ensure frames are compiled in
> > #options KDTRACE_HOOKS # Kernel DTrace hooks
> >
> > must recompile kernel to enable tracing?
>=20
> No.
>=20
> > I'm currently using the intel pro 1000 chipset / em0 driver=2C I've bee=
n
> > experiencing all sorts of network stability problems for a while now(ev=
er
> > since I upgrade to stable a month ago). It looks like the em0 driver fo=
r
> > amd64 needs alot of work however a couple of days ago when I recompiled=
my
> > box to the latest stable 8.1-prerelease I saw alot of improvments and m=
y
> > ipfw/dummynet firewall seems to be running stable with no crashes/locku=
ps so
> > far...
> >
> >
> > It is very easy for me to replicate the in nat kernel problem=2C i just=
cant
> > get a dump to provide you the additional info.
=20
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<BR><BR>>=3B Date: Sun=2C 27 Jun 2010 00:04:16 -0700<BR>>=3B Subject: R=
e: amd64/148157: IPFW in kernel nat BUG found in FreeBSD 8.1-PRERELEASE<BR=
>>=3B From: yanefbsd@gmail.com<BR>>=3B To: pookme@hotmail.com<BR>>=3B=
CC: freebsd-gnats-submit@freebsd.org<BR>>=3B <BR>>=3B Hi Shant=2C<BR>&=
gt=3B Please bottom post from here on out.<BR>>=3B <BR>>=3B On Sat=
=2C Jun 26=2C 2010 at 11:47 PM=2C Shant Kassardjian <=3Bpookme@hotmail.co=
m>=3B wrote:<BR>>=3B >=3B Hi Garrett=2C<BR>>=3B >=3B<BR>>=3B &g=
t=3B<BR>>=3B >=3B I just tried to perform a kernel dump with dumpdev=3D=
"YES" and had no luck=2C I<BR>>=3B >=3B keep getting:<BR>>=3B <BR>>=
=3B dumpdev=3D"<=3Bblah>=3B" always appears to fail to me as well (cont=
rary to<BR>>=3B what others have claimed). Try doing the following after =
booting up:<BR>>=3B <BR>>=3B dumpon `awk '$3 =3D=3D swap { print $1 }'`=
<BR>>=3B <BR>>=3B Then you'll be able to reproduce the problem and grab=
the resulting<BR>>=3B kernel core dump.<BR><BR><BR>Hi Garrett=2C<BR><BR>=
<BR>I still can't get it to dump. Perhaps it's because my system does not h=
ave any swap space allocated?<BR><BR><BR>Here's what I added in my /etc/rc.=
conf to simulate an swap device:<BR><BR><BR>dumpdev=3D"YES"<BR>dumpdir=3D"/=
home/crash/"<BR>swapfile=3D"/home/crash/swap0"<BR><BR>Then I ran:<BR><BR>co=
re# sh /tmp/ipfw_test =
~<BR>00001 nat 100 ip from any to any via em0<BR>ipfw nat 100 config ip 19=
2.168.1.104 redirect_port tcp 172.25.1.1:22 22<BR>core# dumpon `awk '$3 =3D=
=3D swap { print $1 }'` ~<BR><BR><BR>Fatal=
trap 12: page fault while in kernel mode<BR>cpuid =3D 0=3B apic id =3D 00<=
BR>fault virtual address =3D 0xc<BR>fault code =3D superviso=
r write data=2C page not present<BR>instruction pointer =3D 0x20:0xffff=
ffff801d5cd6<BR>stack pointer =3D 0x28:0xffffff8074fbc370<BR>fram=
e pointer =3D 0x28:0xffffff8074fbc620<BR>code segment =
=3D base 0x0=2C limit 0xfffff=2C type 0x1b<BR> =3D D=
PL 0=2C pres 1=2C long 1=2C def32 0=2C gran 1<BR>processor eflags =
=3D interrupt enabled=2C resume=2C IOPL =3D 0<BR>current process =
=3D 1818 (sshd)<BR>trap number =3D 12<BR>panic: page fault<BR>c=
puid =3D 0<BR>Uptime: 2m36s<BR>Cannot dump. Device not defined or unavailab=
le.<BR>Automatic reboot in 15 seconds - press a key on the console to abort=
<BR><BR><BR>I'm still getting the "Cannot dump" error message=2C any idea w=
hat I can do next?<BR><BR><BR>Many thanks.<BR>Shant K<BR><BR>>=3B <BR>>=
=3B >=3B Cannot dump. Device not defined or unavailable.<BR>>=3B >=3B=
<BR>>=3B >=3B my custom kernel is set to disable:<BR>>=3B >=3B<BR>&=
gt=3B >=3B<BR>>=3B >=3B #options KTRACE # ktrace(1) support<BR>>=3B=
>=3B<BR>>=3B >=3B #options KDTRACE_FRAME # Ensure frames are compile=
d in<BR>>=3B >=3B #options KDTRACE_HOOKS # Kernel DTrace hooks<BR>>=
=3B >=3B<BR>>=3B >=3B must recompile kernel to enable tracing?<BR>>=
=3B <BR>>=3B No.<BR>>=3B <BR>>=3B >=3B I'm currently using the inte=
l pro 1000 chipset / em0 driver=2C I've been<BR>>=3B >=3B experiencing =
all sorts of network stability problems for a while now(ever<BR>>=3B >=
=3B since I upgrade to stable a month ago). It looks like the em0 driver fo=
r<BR>>=3B >=3B amd64 needs alot of work however a couple of days ago wh=
en I recompiled my<BR>>=3B >=3B box to the latest stable 8.1-prerelease=
I saw alot of improvments and my<BR>>=3B >=3B ipfw/dummynet firewall s=
eems to be running stable with no crashes/lockups so<BR>>=3B >=3B far..=
.<BR>>=3B >=3B<BR>>=3B >=3B<BR>>=3B >=3B It is very easy for me=
to replicate the in nat kernel problem=2C i just cant<BR>>=3B >=3B get=
a dump to provide you the additional info.<BR> <br /><hr />Ente=
r for a chance to get your town photo on Bing.ca! <a href=3D'http://go.micr=
osoft.com/?linkid=3D9734383' target=3D'_new'>Submit a Photo Now! </a></body=
>
</html>=
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