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Date:      Fri, 29 Oct 1999 16:46:57 -0700 (PDT)
From:      FengYue <fengyue@bluerose.windmoon.nu>
To:        freebsd-isp@FreeBSD.ORG
Subject:   FreebSD bug or defect RAM/motherboard?
Message-ID:  <Pine.BSF.4.10.9910291635380.12359-100000@bluerose.windmoon.nu>
In-Reply-To: <199910292032.PAA92238@ns1.cioe.com>

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Hi Guys, thanks for the input on "FreeBSD & MySQL" topic.  Here comes
another problem:

I recently purchased this PIII-600mhz with 128MB RAM + a ASUS P3BF
motherboard + adaptec 2940U2W controller and two IBM 10K disks.  I
installed FreeBSD3.3-stable on it, well, the ftp install
program was once core dumped (signal 11) for some reasons, but it went ok
after retry. So now I started to use the machine and it constantly crashs.
The crash usually kicks in after a process exit.  Below is the crash
dump that I happened to catch:

IdlePTD 2686976
initial pcb at 223a50
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0x80004
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc01d5af6
stack pointer           = 0x10:0xcaffaf18
frame pointer           = 0x10:0xcaffaf30
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 2 (pagedaemon)
interrupt mask          = net tty bio cam 
trap number             = 12
panic: page fault

#0  boot (howto=256) at ../../kern/kern_shutdown.c:285
#1  0xc01446f8 in at_shutdown (
    function=0xc02054ba <__set_sysinit_set_sym_memdev_sys_init+1050>, 
    arg=0xcaff2d00, queue=-889213220) at ../../kern/kern_shutdown.c:446
#2  0xc01d7245 in trap_fatal ()
#3  0xc01d6f23 in trap_pfault ()
#4  0xc01d6bc6 in trap ()
#5  0xc01d5af6 in pmap_changebit (pa=47714304, bit=32, setem=0)
    at ../../i386/i386/pmap.c:624
#6  0xc01d5d2f in pmap_clear_reference (pa=47714304)
    at ../../i386/i386/pmap.c:3204
#7  0xc01bdb05 in vm_pageout_scan () at ../../vm/vm_pageout.c:746
#8  0xc01be662 in vm_pageout () at ../../vm/vm_pageout.c:1382
#9  0xc01372e2 in kproc_start (udata=0xc021b028) at
../../kern/init_main.c:303
#10 0xc01cd99a in fork_trampoline ()

-----

Does it sound like a detect RAM to those of you who can read the dump?

Thanks!



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