----- Original Message -----
From: <dte...@freebsd.org>
To: "'Ian Lepore'" <free...@damnhippie.dyndns.org>
Cc: <freebsd-hackers@freebsd.org>; <dte...@freebsd.org>
Sent: Wednesday, January 16, 2013 12:56 AM
Subject: RE: kgzip(1) is broken
-----Original Message-----
From: Ian Lepore [mailto:free...@damnhippie.dyndns.org]
Sent: Tuesday, January 15, 2013 4:43 PM
To: Devin Teske
Cc: dte...@freebsd.org; freebsd-hackers@freebsd.org
Subject: RE: kgzip(1) is broken
On Tue, 2013-01-15 at 16:10 -0800, Devin Teske wrote:
>
> > -----Original Message-----
> > From: Devin Teske [mailto:devin.te...@fisglobal.com] On Behalf Of
> > dte...@freebsd.org
> > Sent: Tuesday, January 15, 2013 3:10 PM
> > To: 'Ian Lepore'
> > Cc: freebsd-hackers@freebsd.org; dte...@freebsd.org
> > Subject: RE: kgzip(1) is broken
> >
> >
> >
> > > -----Original Message-----
> > > From: Ian Lepore [mailto:free...@damnhippie.dyndns.org]
> > > Sent: Tuesday, January 15, 2013 3:05 PM
> > > To: dte...@freebsd.org
> > > Cc: freebsd-hackers@freebsd.org
> > > Subject: Re: kgzip(1) is broken
> > >
> > > On Tue, 2013-01-15 at 13:27 -0800, dte...@freebsd.org wrote:
> > > > Hello,
> > > >
> > > > I have been sad of-late because kgzip(1) no longer produces a usable
> kernel.
> > > >
> > > > All versions of 9.x suffer this.
> > > >
> > > > And somewhere between 8.3-RELEASE-p1 and 8.3-RELEASE-p5 this
recently
> > > broke in
> > > > the 8.x series.
> > > >
> > > > I haven't tried the 7 series lately, but if whatever is making the
rounds
> > gets
> > > > MFC'd that far back, I expect the problem to percolate there too.
> > > >
> > > > The symptom is that the machine reboots immediately and unexpectedly
the
> > > moment
> > > > the kernel is executed by the loader.
> > > >
> > > > This is quite troubling and I am looking for someone to help find the
> > culprit. I
> > > > don't know where to start looking.
> > >
> > > Here are some possible candidates from the things that were MFC'd to 8
> > > in that timeframe. I haven't looked at what these do, they're just
> > > changes that affect files related to booting.
> > >
> > > r233211
> > > r233377
> > > r233469
> > > r234563
> > >
> >
> > Thanks Ian!
> >
> > I'll test each one individually to see if regressing any one (or all)
> addresses
> > the problem.
>
> Progress...
>
> Looks like I found the culprit.
>
> Turns out it's a back-ported bxe(4) driver (back-ported from 9 -- where
kgzip
> seems to never work).
>
> I wonder why back-porting bxe(4) from stable/9 to releng/8.3 would cause
kgzip
> to produce non-working kernels.
>
Yeah, it'll be interesting to see how a device driver can lead to "the
machine reboots immediately and unexpectedly the moment the kernel is
executed by the loader," which I took to mean "before seeing the
copyright or anything."
Indeed... loader throws up the syms and upon execution *KABOOM* (screen goes
black and back to POST)
The copyright never appears.
> I'm emailing the maintainers (davidch + other Broadcom folk)
The current dossier is even more interesting... the back-ported driver (with
zero modifications mind you from stable/9 to stable/8) exhibits memory failures
(example below), and causes terminals to become wedged when attempting to (for
example) scp a file over an existing configured network (igb-based -- presumably
unrelated to bxe but in practice loading bxe causes igb to misbehave).
$ ifconfig bxe0 inet 192.168.1.5/24
bxe0: ../../../dev/bxe/if_bxe.c(10939): Memory allocation failure! Cannot fill
fp[00] RX chain.
bxe0: ../../../dev/bxe/if_bxe.c(3921): NIC initialization failed, aborting!
$ ifconfig bxe1 inet 192.168.1.6/24
bxe1: ../../../dev/bxe/if_bxe.c(10939): Memory allocation failure! Cannot fill
fp[00] RX chain.
bxe1: ../../../dev/bxe/if_bxe.c(3921): NIC initialization failed, aborting!
(as expected, also sent mail off to maintainers w/respect to above notes/errors)
Sounds like you may be out of mbufs which is easy, on a box with 4 igb's simply
booting without tuning with cause this so, if you have igb's and bxe's this
could be your cause.
Try adding the following to loader.conf and see if it helps:-
kern.ipc.nmbclusters=51200
Regards
Steve
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