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Date:      Wed, 2 Aug 1995 11:44:50 +0200 (MET DST)
From:      Thomas Graichen <graichen@omega.physik.fu-berlin.de>
To:        bugs@freebsd.org
Subject:   please ...
Message-ID:  <199508020944.LAA08964@julia.physik.fu-berlin.de>

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... can anybody look at our problem i posted a week before - here is the post
again - the debug kernel and kernel crash dump can be found at:

  julia.physik.fu-berlin.de:/pub/freebsd/crash

or in my homedir at freefall for all who have an account there

  ~graichen/crash

it's all gzip'ed -9 - ok and here is the report again - it would be very nice
if someone may take a look at the debugging stuff at the above places - many
many thanks in advance - t

 -----------------------------------------------------------------------------

hello

here is now some more detailed information about my xdm-nfs-kernel crashes -
at first again the description (FreeBSD 2.0.5-RELEASE - but happend since the
january snaps - and maybe before - but i started with FreeBSD here in january):

* the system crashes then i log in (but not if root does this - it's
home is not mounted via nfs) - it only happens sometimes - but if - it will
happen at any i try to login after the system has rebooted after that panic -
loging in as root and doing a "su - myusername" then logout and login as me
works then

* /var/log/messages says:
julia /kernel: Fatal trap 12: page fault while in kernel mode
julia /kernel: fault virtual address    = 0x38
julia /kernel: fault code               = supervisor read, page not present
julia /kernel: instruction pointer      = 0x8:0xf01274e2
julia /kernel: code segment             = base 0x0, limit 0xfffff, type 0x1b
julia /kernel:                  = DPL 0, pres 1, def32 1, gran 1
julia /kernel: processor eflags = interrupt enabled, resume, IOPL = 3
julia /kernel: current process          = 180 (xdm)
julia /kernel: interrupt mask           = 
julia /kernel: panic: page fault
julia /kernel: 
julia /kernel: syncing disks... 31 31 30 27 20 13 2 done
julia /kernel: 
julia /kernel: dumping to dev 1, offset 98304
julia /kernel: dump 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

* nm /kernel says:
f0123bb0 F vfs_syscalls.o
f0127060 F vfs_vnops.o
f0148820 F vm_fault.o

* gdb -k kernel.0 vmcore.0 says:
root@julia /var/crash # gdb -k kernel.0 vmcore.0
GDB is free software and you are welcome to 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.
GDB 4.13 (i386-unknown-freebsd), 
Copyright 1994 Free Software Foundation, Inc...
IdlePTD 185000
current pcb at 17eba0
panic: page fault
#0  boot (arghowto=256) at ../../i386/i386/machdep.c:870
870                             dumppcb.pcb_ptd = rcr3();
(kgdb) where
#0  boot (arghowto=256) at ../../i386/i386/machdep.c:870
#1  0xf010d413 in panic (fmt=0xf015af4c "page fault")
    at ../../kern/subr_prf.c:128
#2  0xf015b9fe in trap_fatal (frame=0xefbffdd0) at ../../i386/i386/trap.c:688
#3  0xf015b570 in trap_pfault (frame=0xefbffdd0, usermode=0)
    at ../../i386/i386/trap.c:610
#4  0xf015b237 in trap (frame={tf_es = 825098256, tf_ds = 806879248, 
      tf_edi = -261435264, tf_esi = 0, tf_ebp = -272630112, 
      tf_isp = -272630280, tf_ebx = 0, tf_edx = 2147483647, 
      tf_ecx = -2147483648, tf_eax = 0, tf_trapno = 12, tf_err = -261488640, 
      tf_eip = -267225886, tf_cs = 8, tf_eflags = 78470, tf_esp = 0, 
      tf_ss = -272629868}) at ../../i386/i386/trap.c:290
#5  0xf0154981 in calltrap ()
#6  0xf01245e3 in open (p=0xf06ae600, uap=0xefbfff94, retval=0xefbfff8c)
    at ../../kern/vfs_syscalls.c:636
#7  0xf015bbe7 in syscall (frame={tf_es = -272695257, tf_ds = -272695257, 
      tf_edi = -272643812, tf_esi = -272643812, tf_ebp = -272644964, 
      tf_isp = -272629788, tf_ebx = 135798880, tf_edx = -1, tf_ecx = 98560, 
      tf_eax = 5,

* you may get kernel.0 and vmcore.0 together with my config-file JULIA and the
3 files i've changed from the standard 2.0.5-RELEASE source-tree (minor
changes: kern_sysctrl.c - netscape uname-patch, if_ether.c - commented the
logging of "arp info overwritten ..." out, lkm.h - the actual one from current
which avoids the kernel crashes while loading a misc module, loading it again
and unloading it) via ftp from (all compressed with gzip -9):

  julia.physik.fu-berlin.de:/pub/freebsd/crash

* if you have any questions - please send me a mail - i'll try to give you any
information you need - i really would like to fix this problem - because we
depend on the fix

thanks in advance - t

 _______________________________________________________||_____________________
                                                  __||
 Perfection is reached, not when there is no  __||       thomas graichen
 longer anything to add, but when there   __||      freie universitaet berlin
 is no longer anything to take away   __||              fachbereich physik
                                  __||
 - Antoine de Saint-Exupery - __||
 ___________________________||____email: graichen@omega.physik.fu-berlin.de____



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