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* RE: Problem with TLB mcheck!
@ 2006-05-31  4:18 ` Zhan, Rongkai
  0 siblings, 0 replies; 6+ messages in thread
From: Zhan, Rongkai @ 2006-05-31  4:18 UTC (permalink / raw)
  To: art, linux-mips

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Hi,

 

Please see: http://www.linux-mips.org/archives/linux-mips/2005-04/msg00026.html

 

Best Regards,

Mark. Zhan

---------------------------------------

Wind River System, Inc. China Beijing Office

     Tel: +86 010 64398185/86/87 Ext. 16

Mobile: +86 139 1097 7353

    Fax: +86 64398189

E-Mail: rongkai.zhan@windriver.com

---------------------------------------

-----Original Message-----
From: linux-mips-bounce@linux-mips.org [mailto:linux-mips-bounce@linux-mips.org] On Behalf Of art
Sent: Wednesday, May 31, 2006 11:42 AM
To: linux-mips@linux-mips.org
Subject: Problem with TLB mcheck!

 

Sorry for resending, but I find out that I wasn't subscribed!

I use 2.6.16 kernel from linux-mips.org (from tarrball).

When I execute:

# cat /bin/busybox > box

Got mcheck at 800f9b68

Cpu 0

$ 0   : 00000000 10008400 c00216bc c00316bc

$ 4   : c00116bc 00004000 00000005 00008000

$ 8   : c00356bc c003d6bc c00016bc 00010000

$12   : 0000000f 00008000 00007fff 00007fff

$16   : 00000003 8024da80 00000008 c0000000

$20   : 00000000 803d7000 8118c000 80240000

$24   : 0000000f 00000000

$28   : 81200000 81201b80 00001000 800f9c0c

Hi    : 0000000b

Lo    : 5555555b

epc   : 800f9b68 zlib_deflateInit2_+0x184/0x200     Not tainted

ra    : 800f9c0c zlib_deflateInit_+0x28/0x34

Status: 10208403    KERNEL EXL IE

Cause : 00800060

PrId  : 0001800b

Hi    : 0000000b

Pagemask: ffffffff

EntryHi : c0000096

EntryLo0: 0000a05f

EntryLo1: 0000a09f

 

Index:  3 pgmask=4kb va=00468000 asid=96

                        [pa=00378000 c=3 d=0 v=1 g=0]

                        [pa=00000000 c=0 d=0 v=0 g=0]

 

Index:  6 pgmask=4kb va=7fa0a000 asid=96

                        [pa=012f7000 c=3 d=1 v=1 g=0]

                        [pa=01244000 c=3 d=1 v=1 g=0]

 

Index:  7 pgmask=4kb va=004f0000 asid=96

                        [pa=012f4000 c=3 d=1 v=1 g=0]

                        [pa=00000000 c=0 d=0 v=0 g=0]

 

Index: 10 pgmask=4kb va=0046e000 asid=96

                        [pa=00310000 c=3 d=0 v=1 g=0]

                        [pa=00311000 c=3 d=0 v=1 g=0]

 

Index: 11 pgmask=4kb va=0046a000 asid=96

                        [pa=0030c000 c=3 d=0 v=1 g=0]

                        [pa=00000000 c=0 d=0 v=0 g=0]

 

Index: 15 pgmask=4kb va=0048c000 asid=96

                        [pa=0032e000 c=3 d=0 v=1 g=0]

                        [pa=0032f000 c=3 d=0 v=1 g=0]

 

 

Code: 00684021  00055880  ae33001c <ae640038> a272001d  ae740018 

ae6e002c  ae6f004c  ae660050

Kernel panic - not syncing: Caught Machine Check exception - caused

by multiple matching entries in the TLB.

 

This thig happens, as I noted, when work with relatively big amounts

of memory ( more than 10-60Kb). busybox for example 700Kb

 

 

-- 

Best regards,

 art                            mailto:art@sigrand.ru

 

 

 


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^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: Fwd: Re[2]: Problem with TLB mcheck!
@ 2006-05-26 12:37 Maciej W. Rozycki
  2006-05-30 13:19 ` art
  0 siblings, 1 reply; 6+ messages in thread
From: Maciej W. Rozycki @ 2006-05-26 12:37 UTC (permalink / raw)
  To: art; +Cc: linux-mips

On Fri, 26 May 2006, art wrote:

> Hello Maciej, thanks for answer! when it is at first time it is wery
> important :)!

 No problem.

> Information about kernel sources (how can I forgot this!!):
>    Version: linux-2.6.12-rc1-mipscvs-20050403 (this is tar-s full
>    name). So I think this kernel is from linux-mips cvs repositary.
>    It was downloaded from http://www.student.tue.nl/Q/t.f.a.wilms/adm5120/

 Please retry with the head of the GIT tree at: "http://linux-mips.org/" 
-- it's more than a year worth of fixes!  The Ralf's patch has already 
been included there.

  Maciej

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: Problem with TLB mcheck!
@ 2006-05-24 12:45 Maciej W. Rozycki
  2006-05-26 11:40 ` Re[2]: " art
  0 siblings, 1 reply; 6+ messages in thread
From: Maciej W. Rozycki @ 2006-05-24 12:45 UTC (permalink / raw)
  To: art, Ralf Baechle; +Cc: linux-mips

On Wed, 24 May 2006, art wrote:

> Hello linux community!
> Please CC to me personaly, because I'am not subsribed yet.
> 
> I am relatively new Linux kernel (just work with some network adapter
> drivers) and my english is poor, so excuse me if something wrong.
> I work with Infineon ADM5120 chip (MIPS32 processor, little endian,
> using tlb), setting embedded Linux on it.
> Almost everything is work now (I port some drivers). But there is big
> problem ( sg16lan is my network driver module):
> 
> [4294714.623000] sg16lan.c: shdsl_interrupt wake up dsl0
> [4294714.627000] sg16lan.c: shdsl_interrupt wake up dsl0
> [4294714.628000] Got mcheck at c0096604
> [4294714.628000] Cpu 0
> [4294714.628000] $ 0   : 00000000 10008400 00000000 00000000
> [4294714.628000] $ 4   : c0098384 c00aa26c 00000001 00000001
> [4294714.628000] $ 8   : 81261fe0 00008400 00000000 80318000
> [4294714.628000] $12   : 0000000c 00 00000078 00000000
> [4294714.628000] $16   : 000000d1 0000aea8 8038a220 8038a000
> [4294714.628000] $20   : 80323420 80030000 00000002 8038a220
> [4294714.628000] $24   : 00000000 802c0000
> [4294714.628000] $28   : 81260000 81261e60 00003fde c0096604
> [4294714.628000] Hi    : 00000280
> [4294714.628000] Lo    : 00000230
> [4294714.628000] epc   : c0096604 store_download+0x424/0x4fc [sg16lan]     Not tainted
> [4294714.628000] ra    : c0096604 store_download+0x424/0x4fc [sg16lan]
> [4294714.628000] Status: 10208403    KERNEL EXL IE
> [4294714.628000] Cause : 00800060
> [4294714.628000] PrId  : 0001800b
> [4294714.628000]
> [4294714.628000] Index:  4 pgmask=4kb va=c0094000 asid=b2
> [4294714.628000]                        [pa=003d4000 c=3 d=1 v=1 g=1]
> [4294714.628000]                        [pa=003d5000 c=3 d=1 v=1 g=1]
> [4294714.628000]
> [4294714.628000] Kernel panic - not syncing: Caught Machine Check exception - caused by multiple matching entries in the TLB.
> [4294714.628000]
> 
> Panic occures when I work with big memory arrays (about 100Kb), when load firmware in the insmod-ed
> driver. BUT! if driver is staticaly compiled in kernel all is ok.
> I have try loading with two variants:
> 1. request_firmware call (it allocates memory with valloc)
> 2. ioctl call (it allocate memory with kalloc).
> The same thing (if driver insmoded - panic, if staticaly compiled -
> all work correctly).
> 
> IMHO this is Memory Management subsystem problem, because ported
> driver is work fine on x86 processor and can not be reason of the
> problem. But I can be wrong!
> Where can I look and whom ask the questions??
> 
> I woud be thankful for any help.
> Thanks anyway, Artem

 The "linux-mips" mailing list (as cc-ed in this response) is a better 
place to ask such questions.

 You haven't included some important information, such as the version 
number of your Linux kernel and where you got your sources from.  Without 
that bit all I can say is there is something wrong with handling of the 
TLB.

 Ralf, BTW -- shouldn't we report the Index, EntryHi and possibly EntryLo* 
registers in show_regs() if the cause is a machine check?  I think it 
would be useful and these registers shouldn't have been corrupted since 
the triggering tlbw* instruction.  A call to show_code() could be useful 
too, to determine which kind of TLB exception has been taken originally.  

  Maciej

^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2006-05-31 11:18 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2006-05-31  4:18 Problem with TLB mcheck! Zhan, Rongkai
2006-05-31  4:18 ` Zhan, Rongkai
2006-05-31  4:42 ` Re[2]: " art
2006-05-31 11:18   ` Maciej W. Rozycki
  -- strict thread matches above, loose matches on Subject: below --
2006-05-26 12:37 Fwd: " Maciej W. Rozycki
2006-05-30 13:19 ` art
2006-05-24 12:45 Maciej W. Rozycki
2006-05-26 11:40 ` Re[2]: " art

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