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Re: booting with NFS root

To: "Yoichi Yuasa" <yoichi_yuasa@tripeaks.co.jp>
Subject: Re: booting with NFS root
From: "Roman Mashak" <mrv@corecom.co.kr>
Date: Fri, 26 May 2006 11:40:01 +0900
Cc: <linux-mips@linux-mips.org>
Fl-build: Fidolook 2002 (SL) 6.0.2800.86 - 14/6/2003 22:16:25
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <001101c6805e$4c4f62b0$9d0ba8c0@mrv> <20060526103840.79fe5ec5.yoichi_yuasa@tripeaks.co.jp>
Sender: linux-mips-bounce@linux-mips.org
Hello, Yoichi

and thanks for reply.

YY> <snip>
??>> Freeing unused kernel memory: 104k freed
??>> do_cpu invoked from kernel context! in traps.c::do_cpu, line 676:

YY> This error is coprocessor unusable exception.
May this be caused by hardware error/bug ?

??>> $0 : 00000000 9004a000 2ab03fe0 2ab03fe0 2ab01560 00000000 00000ae0
??>> 00000ae0 $8 : 00000020 2ab01fe0 2ab01520 00001000 00000019 00000080
??>> 811d7b18 00000c62 $16: 2ab010c0 811d7c58 87f8cfe0 00000003 00000080
??>> 2ab01520 87f841a0 00000001 $24: 00000000 00000080
??>> 811d6000 811d7ba0 2aaa8000 8015f414 Hi : 00000000 Lo : 00000000 epc
??>> : 80256e14    Not tainted

YY> The exception program counter is 0x80256e14 .
YY> You can check instructions(0x80256e14 and before) in your kernel
YY> object.
I ran 'objdump -d /tftpboot/vmlinux | grep -B7 ^80256e14' and got the following:

80256df8:       732f6330        0x732f6330
80256dfc:       64347000        daddiu  s4,at,28672
80256e00:       63636973        daddi   v1,k1,26995
80256e04:       732f6330        0x732f6330
80256e08:       64357000        daddiu  s5,at,28672
80256e0c:       63636973        daddi   v1,k1,26995
80256e10:       732f6330        0x732f6330
80256e14:       64367000        daddiu  s6,at,28672

But I'm not good in MIPS assembling. Does this give you some clue?

??>> Status: 9004a003
??>> Cause : 1000002c
??>> PrId  : 000034c1
??>> Process init (pid: 1, stackpage=811d6000)
??>> Stack:    8015f8a8 8015f9a8 87f71180 8012b2fc 00000000 80135330

With best regards, Roman Mashak. E-mail: mrv@corecom.co.kr


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