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Date: Mon, 14 Aug 1995 16:40:40 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199508140640.QAA23880@godzilla.zeta.org.au>
To: fn@pain.csrv.uidaho.edu, j@uriah.heep.sax.de
Subject: Re: procfs problems in -current?
Cc: current@freebsd.org
Sender: current-owner@freebsd.org
Precedence: bulk

>...
>#10 0xf01a4423 in trap (frame={tf_es = -260374512, tf_ds = 16, tf_edi = 0, 
>      tf_esi = -260316288, tf_ebp = -272630680, tf_isp = -272630748, 
>      tf_ebx = 0, tf_edx = -260316172, tf_ecx = -260278528, tf_eax = 0, 
>      tf_trapno = 12, tf_err = -260374528, tf_eip = -260297713, 
>      tf_cs = -272695288, tf_eflags = 66118, tf_esp = -260316288, 
>      tf_ss = -260864512}) at ../../i386/i386/trap.c:299
>#11 0xf019a821 in calltrap ()
>#12 0xf07c4f4a in end ()
>#13 0xf0127678 in lookup (ndp=0xefbffe50) at ../../kern/vfs_lookup.c:490
>#14 0xf012704e in namei (ndp=0xefbffe50) at ../../kern/vfs_lookup.c:147
>...

>Frames #11 and #12 both displayed bogusly as ``end ()'' in DDB.

Unbogusly?

>This should be the exact trap location.  I think the ``end + ...''
>means it has been executing code from the data/bss instead of the text
>segment.

It probably means that lkm code from the heap was being executed.  It's
hard to debug such code, so I never use lkms :-).

Bruce