Messages in this thread | | | Date | Fri, 8 Aug 2003 10:39:45 -0400 | From | Xiaogang Wang <> | Subject | page_alloc.c bug and heavy I/O |
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Hi,
My hardware and softare:
Asus P4P800, 2GB memory, 2.8GHZ P4 with HT enabled. On-board 3com Giga bit network card 1 parallel ata 160G maxtor disk Nvidia Gefore4 MX440-8x graphics card (Asus V9180)
Redhat 7.3, original kernel 2.4.18-3 Intel Fortran Compiler 7.1 Intel Math Kernel Library 6.0
My problem is that one of my fortran code always crashes after 10-24 hours. This code has a heavy IO. It writes out a 5MB binary file every 1 minute.
The error message in /var/log/message is: (coulson is the name of the computer)
Aug 7 21:11:29 coulson kernel: kernel BUG at page_alloc.c:226! Aug 7 21:11:29 coulson kernel: invalid operand: 0000 Aug 7 21:11:29 coulson kernel: nfsd lockd sunrpc binfmt_misc sr_mod soundcore parport_pc lp parport autofs 3c ....
the line number with page_alloc.c varies for different crases (not always 226).
This code also had a heavy IO. Specifically, it writes out a 5MB file every 1 minute.
I have done a couple of tests to try to find the cause, but without success so far.
1) I have rmmod the 3com2000.0 network driver. The driver source is downloaded from asus website, and compiled by me. The crash still occurs.
2) I heard of Nvidia binary driver can cause page_alloc.c kernel bug. I do have a Nvidia Gefore4 MX440-8x graphics card (Asus V9180), but I did not use Nvidia binary driver. Instead I used the vesa driver coming with redhat 7.3. Nevertheless, I changed to an old pci ATI rage graphics card. But the crash still occurs.
3) when the crash occurs, my local X is up and running. I have not tried the case with local X shutdown.
I also got the same crash when I run the code on a second computer with the same hw and sw. This makes the hw defect less likely to be the cause.
I am thinking to recompile a new kernel. But now I focus on if it is caused by some uncompatible module drivers.
I would appreciate your inputs on this. Please cc your answer to me. I am not on the list.
Xiaogang
------------------------------------------------ Dr Xiaogang Wang Departement de chimie Universite de Montreal C.P. 6128, succursale Centre-ville Montreal (Quebec) H3C 3J7
Tel. (514) 3436111 ext 3947 (office) FAX (514) 3437586 (office) e-mail: xiaogang.wang@umontreal.ca homepage: http://www.esi.umontreal.ca/~wangx ------------------------------------------------
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