weird 5.1 crash

From: Branko F. Gračnar <bfg_at_noviforum.si>
Date: Sat, 19 Jul 2003 22:41:31 +0200
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oday my 5.1-RELEASE (i386) died by panic.

panic message was:

Syncing disks, buffers remaining...
Fatal trap 12: page fault while in kernel mode
fault code: supervisor read, page not present
instruction pointer: 0xc01b5737
panic: spin lock sched lock held by 0xc151e850 for > 5 sec
panic: spin lock sched lock held by 0xc151e850 for > 5 sec
panic: spin lock sched lock held by 0xc151e850 for > 5 sec
panic: spin lock sched lock held by 0xc151e850 for > 5 sec
panic: spin lock sched lock held by 0xc151e850 for > 5 sec

Machine was up for 40 days without cousing trouble.

Hardware:

- - 2 pentium3 1266 mhz
- - 512 MB ram
- - promise sx6000 disk controller with raid5 array
- - 6 ibm ide disks

I'm using ULE scheduler.

Any ideas?

my kernel config file:

- -- snip --
machine         i386
ident           MYMACHINE

cpu             I686_CPU
device          ata
device          atadisk
device          atapicd
device          atkbd
device          atkbdc
device          bpf
device          ether
device          fdc
device          fxp
device          isa
device          loop
device          md
device          miibus
device          npx
device          pci
device          psm
device          pst
device          pty
device          random
device          sc
device          sio
device          splash
device          tun
device          vga
options         COMPAT_LINUX
options         DIRECTIO
options         INCLUDE_CONFIG_FILE
options         ROOTDEVNAME=\"ufs:pst0s1a\"
options         SC_DISABLE_REBOOT
options         APIC_IO
options         ATA_STATIC_ID
options         CD9660
options         COMPAT_43
options         COMPAT_FREEBSD4
options         FFS
options         INET
options         KTRACE
options         NFSCLIENT
options         NFSSERVER
options         SCHED_ULE
options         SMP
options         SOFTUPDATES
options         SYSVMSG
options         SYSVSEM
options         SYSVSHM
options         UFS_ACL
options         UFS_DIRHASH
options         _KPOSIX_PRIORITY_SCHEDULING

- -- snip --
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Received on Sat Jul 19 2003 - 11:44:17 UTC

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