Problem with TLB mcheck!
Hello Maciej, thanks for answer! when it is at first time it is wery important :)!
Wednesday, May 24, 2006, 7:45:26 PM, you wrote:
MWR> The "linux-mips" mailing list (as cc-ed in this response) is a better MWR> place to ask such questions.
MWR> You haven't included some important information, such as the version MWR> number of your Linux kernel and where you got your sources from. Without MWR> that bit all I can say is there is something wrong with handling of the MWR> TLB.
MWR> Ralf, BTW -- shouldn't we report the Index, EntryHi and possibly EntryLo* MWR> registers in show_regs() if the cause is a machine check? I think it MWR> would be useful and these registers shouldn't have been corrupted since MWR> the triggering tlbw* instruction. A call to show_code() could be useful MWR> too, to determine which kind of TLB exception has been taken originally.
MWR> Maciej
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/
Here is mcheck with respect to your patch:
[4294701.476000] Got mcheck at 8011c818 [4294701.476000] Hi : 00000000 [4294701.476000] Pagemask: ffffffff [4294701.476000] EntryHi : c008a013 [4294701.476000] EntryLo0: 0000f25f [4294701.476000] EntryLo1: 0000ff9f [4294701.476000] [4294701.476000] Cpu 0 [4294701.476000] $ 0 : 00000000 10008400 00000000 802b17ac [4294701.476000] $ 4 : 802b13ac 00000400 c008ac00 80353d6c [4294701.476000] $ 8 : 10008400 1000001f 80393000 fffffff8 [4294701.476000] $12 : 802b0000 802b0000 00000001 ffffffff [4294701.476000] $16 : 00000400 802b17ab 80353d6c 00000020 [4294701.476000] $20 : 80353e38 81144800 00000400 802b13ac [4294701.476000] $24 : 00000006 0048ce30 [4294701.476000] $28 : 80352000 80353c70 7faf5d98 8011ce94 [4294701.476000] Hi : 00000000 [4294701.476000] Lo : 000c3500 [4294701.476000] epc : 8011c818 vsnprintf+0x54/0x6bc Not tainted [4294701.476000] ra : 8011ce94 vscnprintf+0x14/0x30 [4294701.476000] Status: 10208402 KERNEL EXL [4294701.476000] Cause : 00800060 [4294701.476000] PrId : 0001800b [4294701.476000] [4294701.476000] Index: 0 pgmask=4kb va=0050a000 asid=13 [4294701.476000] [pa=00000000 c=0 d=0 v=0 g=0] [4294701.476000] [pa=00379000 c=3 d=1 v=1 g=0] [4294701.476000] [4294701.476000] Index: 1 pgmask=4kb va=7faf4000 asid=13 [4294701.476000] [pa=00000000 c=0 d=0 v=0 g=0] [4294701.476000] [pa=0031b000 c=3 d=1 v=1 g=0] [4294701.476000] [4294701.476000] Index: 2 pgmask=4kb va=0048a000 asid=13 [4294701.476000] [pa=011bc000 c=3 d=0 v=1 g=0] [4294701.476000] [pa=011bd000 c=3 d=0 v=1 g=0] [4294701.476000] [4294701.476000] Index: 5 pgmask=4kb va=00492000 asid=13 [4294701.476000] [pa=011c4000 c=3 d=0 v=1 g=0] [4294701.476000] [pa=011c5000 c=3 d=0 v=1 g=0] [4294701.476000] [4294701.476000] Index: 6 pgmask=4kb va=004ee000 asid=13 [4294701.476000] [pa=0028a000 c=3 d=0 v=1 g=0] [4294701.476000] [pa=011f7000 c=3 d=1 v=1 g=0] [4294701.476000] [4294701.476000] Index: 7 pgmask=4kb va=0048c000 asid=13 [4294701.476000] [pa=011be000 c=3 d=0 v=1 g=0] [4294701.476000] [pa=011bf000 c=3 d=0 v=1 g=0] [4294701.476000] [4294701.476000] Index: 8 pgmask=4kb va=004f0000 asid=13 [4294701.476000] [pa=00322000 c=3 d=1 v=1 g=0] [4294701.476000] [pa=00000000 c=0 d=0 v=0 g=0] [4294701.476000] [4294701.476000] Index: 9 pgmask=4kb va=00480000 asid=13 [4294701.476000] [pa=011b0000 c=3 d=0 v=1 g=0] [4294701.476000] [pa=011b1000 c=3 d=0 v=1 g=0] [4294701.476000] [4294701.476000] Index: 10 pgmask=4kb va=00488000 asid=13 [4294701.476000] [pa=011b8000 c=3 d=0 v=1 g=0] [4294701.476000] [pa=011b9000 c=3 d=0 v=1 g=0] [4294701.476000] [4294701.476000] Index: 11 pgmask=4kb va=7faf6000 asid=13 [4294701.476000] [pa=00357000 c=3 d=1 v=1 g=0] [4294701.476000] [pa=00000000 c=0 d=0 v=0 g=0] [4294701.476000] [4294701.476000] Index: 12 pgmask=4kb va=00478000 asid=13 [4294701.476000] [pa=00000000 c=0 d=0 v=0 g=0] [4294701.476000] [pa=011a9000 c=3 d=0 v=1 g=0] [4294701.476000] [4294701.476000] Index: 13 pgmask=4kb va=c008c000 asid=13 [4294701.476000] [pa=003ff000 c=3 d=1 v=1 g=1] [4294701.476000] [pa=01200000 c=3 d=1 v=1 g=1] [4294701.476000] [4294701.476000] Index: 14 pgmask=4kb va=004aa000 asid=13 [4294701.476000] [pa=00286000 c=3 d=0 v=1 g=0] [4294701.476000] [pa=00287000 c=3 d=0 v=1 g=0] [4294701.476000] [4294701.476000] Index: 15 pgmask=4kb va=00508000 asid=13 [4294701.476000] [pa=0031c000 c=3 d=1 v=1 g=0] [4294701.476000] [pa=00000000 c=0 d=0 v=0 g=0] [4294701.476000] [4294701.476000] [4294701.476000] Code: 0222102b 14400034 00000000 <80c60000> 14c00014 02e08021 0230102b 10400021 00001821 [4294701.476000] Caught Machine Check exception - caused by multiple matching entries in the TLB
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Best regards, art mailto:[email protected]
Quoted 2 lines · art
Hello Maciej, thanks for answer! when it is at first time it is wery important :)!
No problem.
Quoted 4 lines
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
Hello Maciej,
Friday, May 26, 2006, 7:37:19 PM, you wrote:
Quoted 2 lines · art
Quoted 2 lines
Hello Maciej, thanks for answer! when it is at first time it is wery important :)!
MWR> No problem.
Quoted 4 lines
Quoted 4 lines
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/
MWR> Please retry with the head of the GIT tree at: "http://linux-mips.org/" MWR> -- it's more than a year worth of fixes! The Ralf's patch has already MWR> been included there.
MWR> Maciej
I have try 2.6.16 kernel from linux-mips.org (from tarrball). You recomend newest kernel, but I get stable, thinking it would be more robust.But have same situation :(. 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.
Signature · 2 lines
Best regards, art mailto:[email protected]