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Date:      Fri, 9 Aug 2002 21:41:38 -0400
From:      Scott Lambert <lambert@lambertfam.org>
To:        FreeBSD-STABLE@FreeBSD.org
Subject:   panics after upgrading to -STABLE Aug 9, 2002
Message-ID:  <20020810014138.GA354@laptop.lambertfam.org>

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I've been getting regular panics today after CVSuping and following the 
UPDATING procedure.  I think all of the panics are happening as various 
network apps are tearing down their connections.  I've had it trap while
in the kernel on the behalf of fetchmail, ppp, and nfsd (when I kill -9'd
nfsd to try to make sure I wouldn't panic during a buildkernel, and during
a shutdown.). 

This happened with both my LAPTOP kernel and the GENERIC kernel.

Last kernel built before today :
Aug  9 11:55:25 laptop /kernel: FreeBSD 4.6-STABLE #25: Mon Aug  5 18:37:34 EDT 2002
Aug  9 11:55:25 laptop /kernel: root@laptop.lambertfam.org:/usr/obj/usr/src/sys/LAPTOP

Kernel with problems : 
Aug  9 15:39:09 laptop /kernel: FreeBSD 4.6-STABLE #26: Fri Aug  9 14:56:21 EDT 2002
Aug  9 15:39:09 laptop /kernel: root@laptop.lambertfam.org:/usr/obj/usr/src/sys/LAPTOP

And I am now running a kernel, LAPTOP, built after cvsuping with 
date=2002.08.09.00.00.00

I have survived a shutdown -r with this kernel and have now checked my
mail several times.  On the basis of that, :-), I'm going to claim that
this kernel is ok.

I suspect that the tcpip related changes today are to blame for my problems.

This is what happened on the first reload to the new kernel:

Aug  9 15:39:19 laptop /kernel: Linux ELF exec handler installed
Aug  9 15:42:26 laptop /kernel:
Aug  9 15:42:26 laptop /kernel:
Aug  9 15:42:26 laptop /kernel: Fatal trap 12: page fault while in kernel mode
Aug  9 15:42:26 laptop /kernel: fault virtual address   = 0x0
Aug  9 15:42:26 laptop /kernel: fault code              = supervisor read, page not present
Aug  9 15:42:26 laptop /kernel: instruction pointer     = 0x8:0xc0181804
Aug  9 15:42:26 laptop /kernel: stack pointer           = 0x10:0xc028d808
Aug  9 15:42:26 laptop /kernel: frame pointer           = 0x10:0xc028d810
Aug  9 15:42:26 laptop /kernel: code segment            = base 0x0, limit 0xfffff, type 0x1b
Aug  9 15:42:26 laptop /kernel: = DPL 0, pres 1, def32 1, gran 1
Aug  9 15:42:26 laptop /kernel: processor eflags        = interrupt enabled, resume, IOPL = 0
Aug  9 15:42:26 laptop /kernel: current process         = Idle
Aug  9 15:42:26 laptop /kernel: interrupt mask          = net
Aug  9 15:42:26 laptop /kernel: trap number             = 12
Aug  9 15:42:26 laptop /kernel: panic: page fault
Aug  9 15:42:26 laptop /kernel:
Aug  9 15:42:26 laptop /kernel: syncing disks...
Aug  9 15:42:26 laptop /kernel:
Aug  9 15:42:26 laptop /kernel: Fatal trap 12: page fault while in kernel mode
Aug  9 15:42:26 laptop /kernel: fault virtual address   = 0x30
Aug  9 15:42:26 laptop /kernel: fault code              = supervisor read, page not present
Aug  9 15:42:26 laptop /kernel: instruction pointer     = 0x8:0xc01e7cd4
Aug  9 15:42:26 laptop /kernel: stack pointer           = 0x10:0xc028d628
Aug  9 15:42:26 laptop /kernel: frame pointer           = 0x10:0xc028d630
Aug  9 15:42:26 laptop /kernel: code segment            = base 0x0, limit 0xfffff, type 0x1b
Aug  9 15:42:26 laptop /kernel: = DPL 0, pres 1, def32 1, gran 1
Aug  9 15:42:26 laptop /kernel: processor eflags        = interrupt enabled, resume, IOPL = 0
Aug  9 15:42:26 laptop /kernel: current process         = Idle
Aug  9 15:42:26 laptop /kernel: interrupt mask          = net bio cam
Aug  9 15:42:26 laptop /kernel: trap number             = 12
Aug  9 15:42:26 laptop /kernel: panic: page fault
Aug  9 15:42:26 laptop /kernel: Uptime: 30s
Aug  9 15:42:26 laptop /kernel: Automatic reboot in 15 seconds - press a key on the console to abort
Aug  9 15:42:26 laptop /kernel: Rebooting...

This is the last trap, with the GENERIC kernel, before I got the 2002.08.09.00.00.00 
LAPTOP kernel built.

Aug  9 21:00:17 laptop syslogd: exiting on signal 15
Aug  9 21:03:16 laptop /kernel:
Aug  9 21:03:16 laptop /kernel:
Aug  9 21:03:16 laptop /kernel: Fatal trap 12: page fault while in kernel mode
Aug  9 21:03:16 laptop /kernel: fault virtual address   = 0x0
Aug  9 21:03:16 laptop /kernel: fault code              = supervisor read, page not present
Aug  9 21:03:16 laptop /kernel: instruction pointer     = 0x8:0xc0204e38
Aug  9 21:03:16 laptop /kernel: stack pointer           = 0x10:0xdac1ad8c
Aug  9 21:03:16 laptop /kernel: frame pointer           = 0x10:0xdac1ad94
Aug  9 21:03:16 laptop /kernel: code segment            = base 0x0, limit 0xfffff, type 0x1b
Aug  9 21:03:16 laptop /kernel: = DPL 0, pres 1, def32 1, gran 1
Aug  9 21:03:16 laptop /kernel: processor eflags        = interrupt enabled, resume, IOPL = 0
Aug  9 21:03:16 laptop /kernel: current process         = 118 (nfsd)
Aug  9 21:03:16 laptop /kernel: interrupt mask          = net tty
Aug  9 21:03:16 laptop /kernel: trap number             = 12
Aug  9 21:03:16 laptop /kernel: panic: page fault
Aug  9 21:03:16 laptop /kernel:
Aug  9 21:03:16 laptop /kernel: syncing disks... 7
Aug  9 21:03:16 laptop /kernel: done
Aug  9 21:03:16 laptop /kernel: Uptime: 15m24s
Aug  9 21:03:16 laptop /kernel: Automatic reboot in 15 seconds - press a key on the console to abort
Aug  9 21:03:16 laptop /kernel: --> Press a key on the console to reboot,
Aug  9 21:03:16 laptop /kernel: --> or switch off the system now.
Aug  9 21:03:16 laptop /kernel: Rebooting...

Rather than copy and paste all of the dmesg and trap information into
this message, I'm going to upload my messages logs to :

http://www.lambertfam.org/~lambert/laptop/messages/

This URL:
http://www.lambertfam.org/~lambert/laptop/

has all the gory details of the configuration of this system.

The machine seems to be able to run as long as I want it to as long as I
don't hit the network.  I have done three buildkernel with it while the
bad kernels were on it.  Some network apps don't seem to bother it.  I
was able to cvsup a couple of times.  First to see if I had cvsuped mid
commit and secondly to back my tree up to midnight.

-- 
Scott Lambert                    KC5MLE                       Unix SysAdmin
lambert@lambertfam.org      

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