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Subject: RE: Kernel trouble?
Date: Fri, 16 Nov 2007 13:59:11 -0800
Message-ID: <BB375AF679D4A34E9CA8DFA650E2B04E06A7BC94@onstor-exch02.onstor.net>
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Thread-Topic: Kernel trouble?
Thread-Index: Acgom5LyuTDLS3fxSCGArA9Jm0jgXQAABdpw
References: <BB375AF679D4A34E9CA8DFA650E2B04E056C91C3@onstor-exch02.onstor.net><20071116134453.7d4c64ba@ripper.onstor.net> <20071116135642.6d558605@ripper.onstor.net>
From: "Maxim Kozlovsky" <maxim.kozlovsky@onstor.com>
To: "Andy Sharp" <andy.sharp@onstor.com>,
	"Larry Scheer" <larry.scheer@onstor.com>,
	"Rendell Fong" <rendell.fong@onstor.com>

The driver does not have bugs, it writes at whatever address the caller
told it. Whoever uses it does, 0x500000f0 is not a valid address.

>-----Original Message-----
>From: Andy Sharp
>Sent: Friday, November 16, 2007 1:57 PM
>To: Larry Scheer; Rendell Fong; Maxim Kozlovsky
>Subject: Re: Kernel trouble?
>
>Or a bug in Max's new driver more likely.
>
>On Fri, 16 Nov 2007 13:44:53 -0800 Andrew Sharp <andy.sharp@onstor.com>
>wrote:
>
>> Looks like a bug in chassisd?
>>
>> On Fri, 16 Nov 2007 12:25:57 -0800 "Larry Scheer"
>> <larry.scheer@onstor.com> wrote:
>>
>> > Just thought I would pass this along...
>> >
>> > Could I have gotten cougar module installed by mistake?
>> >
>> > I see it when I do a reboot:
>> >
>> > eng216:/# CPU 0 Unable to handle kernel paging request at virtual
>> > address 500000f0, epc =3D=3D 83126d30, ra =3D=3D 83126d20
>> > Oops[#1]:
>> > Cpu 0
>> > $ 0   : 00000000 7fe23900 500000f0 00000001
>> > $ 4   : 8c337ec0 7fe23900 00000000 b00000f0
>> > $ 8   : 00000001 8c337ec0 00000000 00000000
>> > $12   : 8c41d2a0 00000004 8c337f40 00404ba8
>> > $16   : 8c41d2a0 00000004 7fe238fc 8c337f40
>> > $20   : 00000004 004016b0 2ac843e0 0053f7a8
>> > $24   : 00000000 2adad84c
>> > $28   : 8c336000 8c337eb8 7fe23870 83126d20
>> > Hi    : 000000f9
>> > Lo    : 0003a515
>> > epc   : 83126d30 write_mipsphys+0x70/0x138     Not tainted
>> > ra    : 83126d20 write_mipsphys+0x60/0x138
>> > Status: b000ef03    KERNEL EXL IE
>> > Cause : 0080000c
>> > BadVA : 500000f0
>> > PrId  : 00003440
>> > Modules linked in: autofs4 softdog
>> > Process chassis (pid: 7745, threadinfo=3D8c336000, task=3D8c1e4c00)
>> > Stack : 00000001 00000001 8d2dc188 8fa9f000 830731d0 830731a8
>> > 83070584 00000000
>> >         00000020 8c41d2a0 8fa9f000 00000007 8c41d2a0 ffffffe3
>> > 00000004 7fe238fc
>> >         83073afc 83070ae4 830606c8 00100873 00000000 2aafef10
>> > 00000000 00406f44
>> >         00000007 7fe238fc b00000f0 00000000 8300a5e0 8300a5e0
>> > 2ac843e0 7fab61fc
>> >         004d5ee8 0000002f b00000f0 00000000 00000000 b000ef00
>> > 00001069 00000000
>> >         ...
>> > Call Trace:
>> > [<83126d30>] write_mipsphys+0x70/0x138
>> > [<830731d0>] vfs_write+0xc0/0x160
>> > [<83073afc>] sys_pwrite64+0x94/0xac
>> > [<8300a5e0>] stack_done+0x20/0x3c
>> >
>> >
>> > Code: 8fa30004  3c02a000  00e21021 <ac430000> 8dc60000  00002821
>> > 8dc70004  01a04821  00cd1021
>> >
