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Date:      Sat, 15 Jul 1995 20:57:06 -0500 (CDT)
From:      Mike Pritchard <mpp@legarto.minn.net>
To:        current@freebsd.org
Subject:   current kernel panics at boot
Message-ID:  <199507160157.UAA00287@mpp.minn.net>

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I am unable to boot a -current kernel (supped within the
last 1/2 hour).  It panics at boot time right after the probes 
complete with the following message:

panic: vm_page_alloc: offset not page aligned

The panic is within a #DIAGNOSTIC ifdef block.  The last good kernel 
I have was built from sources supped sometime during the morning on 
7/13, and that kernel does contain the new vm changes.

Here is a traceback from the dump.  I don't have time right now
to examine this any further.

Reading symbol data from /usr/var/crash/kernel.12...done.
IdlePTD 2c2000
panic: vm_page_alloc: offset not page aligned
current pcb at 1ea420
(kgdb) bt
#0  boot (arghowto=256) (../../i386/i386/machdep.c line 867)
867	(../../i386/i386/machdep.c)
#1  0xf01185f5 in panic ()
#2  0xf01a46fc in vm_page_alloc (object=(vm_object_t) 0xf07a0500, offset=0x0000201c, page_req=0) (../../vm/vm_page.c line 553)
#3  0xf019dbeb in vm_fault (map=(vm_map_t) 0xf07bd300, vaddr=0xefc0001c, fault_type=2, change_wiring=0) (../../vm/vm_fault.c line 314)
#4  0xf01b1dcb in trap_pfault (frame=(struct trapframe *) 0xefbfffbc, usermode=1) (../../i386/i386/trap.c line 586)
#5  0xf01b199b in trap (frame={tf_es = 39, tf_ds = 39, tf_edi = 2945024, tf_esi = -272638256, tf_ebp = -272638356, tf_isp = -272629788, tf_ebx = 8408, tf_edx = 1, tf_ecx = 0, tf_eax = 1, tf_trapno = 12, tf_err = 4, tf_eip = 30117, tf_cs = 31, tf_eflags = 66182, tf_esp = -272638404, tf_ss = 39}) (../../i386/i386/trap.c line 221)
(kgdb) 


The first bad kernel I have is from sup run at 03:00 CST today (7/15),
so whatever broke this probably went in between then and sometime
during the morning on 7/13, although it could very well be the
big vm change.
-- 
Mike Pritchard
mpp@legarto.minn.net
"Go that way.  Really fast.  If something gets in your way, turn"



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