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SubjectOOPS, politely run through ksymoops
This oops (and it's bretheren which followed the first one) came from a
wee little 486dx2-66 chugging along in a cute toy beowulf cluster.
She's running stock 2.2.7 and pvmd, working on diagonalizing a matrix. I
can send the source to the program "matrix_workerv2" if needed.

I ran it through ksymoops on the same node that died, here's the output.
Config is attached and I'll be here for anything else. Hope this helps...
I'll let you all know if it reoccurs with 2.2.10 and the like (well, when
that data corruption is gone for certain I'll switch over to the latest).

Options used: -V (default)
-o /lib/modules/2.2.7/ (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-M (specified)
-c 1 (default)

Unable to handle kernel NULL pointer dereference at virtual address 00000345
current->tss.cr3 = 0030b000, %cr3 = 0030b000
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c012d9dd>]
EFLAGS: 00010206
eax: 00000345 ebx: 00000000 ecx: c07a2000 edx: 00000345
esi: c07a3fa8 edi: 00000003 ebp: 00000000 esp: c07a3f54
ds: 0018 es: 0018 ss:0018
Process matrix_workerv2 (pid: 3312, process nr: 24, stackpage=c07a3000)
stack: c0512cb8 00000000 00000000 00000345 c07a2000 7fffffff c0741000 c0741000
c012de31 00000004 c07a3fa8 c07a3fa4 c07a2000 00000000 00000000 bffffbc8
c04d5620 c07a3fa8 00000014 c0512ca0 7fffffff c0512ca0 c0512ca4 c0512ca8
Call Trace: [<c012de31>] [<c0107c12>] [<c010002b>]
Code: 8b 00 8b 4c 24 10 85 0c 98 06 0f 8b 46 0c 09 0c 98 45 c7 44
>>EIP: c012d9dd <__pollwait+29d/dd0>
Trace: c012de31 <__pollwait+6f1/dd0>
Trace: c0107c12 <dump_thread+1432/2640>
Trace: c010002b Before first symbol
Code: c012d9dd <__pollwait+29d/dd0> 00000000 <_EIP>: <===
Code: c012d9dd <__pollwait+29d/dd0> 0: 8b 00 movl (%eax),%eax <===
Code: c012d9df <__pollwait+29f/dd0> 2: 8b 4c 24 10 movl 0x10(%esp,1),%ecx
Code: c012d9e3 <__pollwait+2a3/dd0> 6: 85 0c 98 testl %ecx,(%eax,%ebx,4)
Code: c012d9e6 <__pollwait+2a6/dd0> 9: 06 pushl %es
Code: c012d9e7 <__pollwait+2a7/dd0> a: 0f 8b 46 0c 09 jnp cc1be633 <END_OF_CODE+b1b2b33/????>
Code: c012d9ec <__pollwait+2ac/dd0> f: 0c
Code: c012d9ed <__pollwait+2ad/dd0> 10: 98 cwtl
Code: c012d9ee <__pollwait+2ae/dd0> 11: 45 incl %ebp
Code: c012d9ef <__pollwait+2af/dd0> 12: c7 44 00 00 00 movl $0x0,0x0(%eax,%eax,1)
Code: c012d9f4 <__pollwait+2b4/dd0> 17: 00 00 00
Unable to handle kernel NULL pointer dereference at virtual address 00000114
current->tss.cr3 = 007eb000, %cr3 = 007eb000
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c012d9dd>]
EFLAGS: 00010202
eax: 00000114 ebx: 00000000 ecx: c074cde0 edx: 00000000
esi: c041dfa8 edi: 00000003 ebp: 00000000 esp: c041df54
ds: 0018 es: 0018 ss: 0018
Process pvmd3 (pid: 3311, process nr: 27, stackpage=c041d000)
Stack: c05125c8 00000000 00000000 00000114 c041c000 00000b5c 00000000 c0277000
c012de31 0000000a c041dfa8 c041dfc4 c041c000 00000000 bffffbe4 bffffd08
c041c000 c041dfa8 00000014 c05125b0 00000b69 c05125b0 c05125b4 c05125b8
Call Trace: [<c012de31>] [<c0107c14>] [<c010002b>]
Code: 8b 00 8b 4c 24 10 85 0c 98 06 0f 8b 46 0c 09 0c 98 45 c7 44
>>EIP: c012d9dd <__pollwait+29d/dd0>
Trace: c012de31 <__pollwait+6f1/dd0>
Trace: c0107c14 <dump_thread+1434/2640>
Trace: c010002b Before first symbol
Code: c012d9dd <__pollwait+29d/dd0> 00000000 <_EIP>: <===
Code: c012d9dd <__pollwait+29d/dd0> 0: 8b 00 movl (%eax),%eax <===
Code: c012d9df <__pollwait+29f/dd0> 2: 8b 4c 24 10 movl 0x10(%esp,1),%ecx
Code: c012d9e3 <__pollwait+2a3/dd0> 6: 85 0c 98 testl %ecx,(%eax,%ebx,4)
Code: c012d9e6 <__pollwait+2a6/dd0> 9: 06 pushl %es
Code: c012d9e7 <__pollwait+2a7/dd0> a: 0f 8b 46 0c 09 jnp cc1be633 <END_OF_CODE+b1b2b33/????>
Code: c012d9ec <__pollwait+2ac/dd0> f: 0c
Code: c012d9ed <__pollwait+2ad/dd0> 10: 98 cwtl
Code: c012d9ee <__pollwait+2ae/dd0> 11: 45 incl %ebp
Code: c012d9ef <__pollwait+2af/dd0> 12: c7 44 00 00 00 movl $0x0,0x0(%eax,%eax,1)
Code: c012d9f4 <__pollwait+2b4/dd0> 17: 00 00 00
Unable to handle kernel NULL pointer dereference at virtual address 00000345
current->tss.cr3 = 004d2000, %cr3 = 004d2000
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c012d9dd>]
EFLAGS: 00010206
eax: 00000345 ebx: 00000000 ecx: c01e95c0 edx: 00000345
esi: c04ddfa8 edi: 00000002 ebp: 00000000 esp: c04ddf54
ds: 0018 es: 0018 ss: 0018
Process syslogd (pid: 203, process nr: 11, stackpage=c04dd001
Stack: c0098700 00000000 00000007 00000345 c04dc000 7fffffff 00000000 c06b8000
c012de31 00000003 c04ddfa8 c04ddfa4 c04dc000 00000000 00000000 00000400
bffff6d8 c04ddfa8 00000280 c0098400 7fffffff c0098400 c0098480 c0098500
Call Trace: [<c012de31>] [<c0107c14>]
Code: 8b 00 8b 4c 24 10 85 0c 98 06 0f 8b 46 0c 09 0c 98 45 c7 44
>>EIP: c012d9dd <__pollwait+29d/dd0>
Trace: c012de31 <__pollwait+6f1/dd0>
Trace: c0107c14 <dump_thread+1434/2640>
Code: c012d9dd <__pollwait+29d/dd0> 00000000 <_EIP>: <===
Code: c012d9dd <__pollwait+29d/dd0> 0: 8b 00 movl (%eax),%eax <===
Code: c012d9df <__pollwait+29f/dd0> 2: 8b 4c 24 10 movl 0x10(%esp,1),%ecx
Code: c012d9e3 <__pollwait+2a3/dd0> 6: 85 0c 98 testl %ecx,(%eax,%ebx,4)
Code: c012d9e6 <__pollwait+2a6/dd0> 9: 06 pushl %es
Code: c012d9e7 <__pollwait+2a7/dd0> a: 0f 8b 46 0c 09 jnp cc1be633 <END_OF_CODE+b1b2b33/????>
Code: c012d9ec <__pollwait+2ac/dd0> f: 0c
Code: c012d9ed <__pollwait+2ad/dd0> 10: 98 cwtl
Code: c012d9ee <__pollwait+2ae/dd0> 11: 45 incl %ebp
Code: c012d9ef <__pollwait+2af/dd0> 12: c7 44 00 00 00 movl $0x0,0x0(%eax,%eax,1)
Code: c012d9f4 <__pollwait+2b4/dd0> 17: 00 00 00

-V

*************************
* Vasilios F. Hoffman *
* Physics Unix Admin *
* Wesleyan University *
* www.con.wesleyan.edu *
*************************
Hi! I'm a .signature virus! copy me into your .signature file to help me
spread!
#
# Automatically generated by make menuconfig: don't edit
#

#
# Code maturity level options
#
# CONFIG_EXPERIMENTAL is not set

#
# Processor type and features
#
# CONFIG_M386 is not set
CONFIG_M486=y
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
# CONFIG_M686 is not set
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
# CONFIG_MATH_EMULATION is not set
# CONFIG_MTRR is not set
# CONFIG_SMP is not set

#
# Loadable module support
#
CONFIG_MODULES=y
# CONFIG_MODVERSIONS is not set
CONFIG_KMOD=y

#
# General setup
#
CONFIG_NET=y
# CONFIG_PCI is not set
# CONFIG_MCA is not set
# CONFIG_VISWS is not set
CONFIG_SYSVIPC=y
# CONFIG_BSD_PROCESS_ACCT is not set
CONFIG_SYSCTL=y
CONFIG_BINFMT_AOUT=y
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=y
# CONFIG_PARPORT is not set
# CONFIG_APM is not set

#
# Plug and Play support
#
# CONFIG_PNP is not set

#
# Block devices
#
CONFIG_BLK_DEV_FD=y
CONFIG_BLK_DEV_IDE=y
# CONFIG_BLK_DEV_HD_IDE is not set
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_BLK_DEV_IDECD=y
# CONFIG_BLK_DEV_IDETAPE is not set
# CONFIG_BLK_DEV_IDEFLOPPY is not set
# CONFIG_BLK_DEV_IDESCSI is not set
CONFIG_BLK_DEV_CMD640=y
CONFIG_BLK_DEV_CMD640_ENHANCED=y
# CONFIG_IDE_CHIPSETS is not set
CONFIG_BLK_DEV_LOOP=m
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_MD is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_BLK_DEV_XD is not set
CONFIG_PARIDE_PARPORT=y
# CONFIG_PARIDE is not set
# CONFIG_BLK_DEV_HD is not set

#
# Networking options
#
CONFIG_PACKET=y
CONFIG_NETLINK=y
# CONFIG_RTNETLINK is not set
# CONFIG_NETLINK_DEV is not set
# CONFIG_FIREWALL is not set
# CONFIG_FILTER is not set
CONFIG_UNIX=y
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
# CONFIG_IP_PNP is not set
# CONFIG_IP_ROUTER is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
# CONFIG_IP_ALIAS is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_INET_RARP is not set
# CONFIG_SKB_LARGE is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set

#
# SCSI support
#
# CONFIG_SCSI is not set

#
# Network device support
#
CONFIG_NETDEVICES=y
# CONFIG_ARCNET is not set
CONFIG_DUMMY=m
# CONFIG_EQUALIZER is not set
CONFIG_NET_ETHERNET=y
CONFIG_NET_VENDOR_3COM=y
CONFIG_EL1=m
CONFIG_EL2=m
CONFIG_ELPLUS=m
CONFIG_EL3=m
CONFIG_3C515=m
CONFIG_VORTEX=m
CONFIG_LANCE=m
CONFIG_NET_VENDOR_SMC=y
CONFIG_WD80x3=m
CONFIG_ULTRA=m
CONFIG_ULTRA32=m
CONFIG_SMC9194=m
CONFIG_NET_VENDOR_RACAL=y
CONFIG_NI52=m
CONFIG_NI65=m
CONFIG_NET_ISA=y
CONFIG_AT1700=m
CONFIG_E2100=m
CONFIG_DEPCA=m
CONFIG_EWRK3=m
CONFIG_EEXPRESS=m
CONFIG_FMV18X=m
CONFIG_HPLAN_PLUS=m
CONFIG_HPLAN=m
CONFIG_HP100=m
CONFIG_NE2000=m
CONFIG_SK_G16=y
# CONFIG_NET_EISA is not set
# CONFIG_NET_POCKET is not set
# CONFIG_FDDI is not set
# CONFIG_DLCI is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set
# CONFIG_NET_RADIO is not set
# CONFIG_TR is not set
# CONFIG_HOSTESS_SV11 is not set
# CONFIG_COSA is not set
# CONFIG_RCPCI is not set
# CONFIG_WAN_DRIVERS is not set
# CONFIG_LAPBETHER is not set
# CONFIG_X25_ASY is not set

#
# Amateur Radio support
#
# CONFIG_HAMRADIO is not set

#
# ISDN subsystem
#
# CONFIG_ISDN is not set

#
# Old CD-ROM drivers (not SCSI, not IDE)
#
# CONFIG_CD_NO_IDESCSI is not set

#
# Character devices
#
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_SERIAL=y
CONFIG_SERIAL_CONSOLE=y
# CONFIG_SERIAL_EXTENDED is not set
# CONFIG_SERIAL_NONSTANDARD is not set
CONFIG_UNIX98_PTYS=y
CONFIG_UNIX98_PTY_COUNT=256
CONFIG_MOUSE=y

#
# Mice
#
# CONFIG_ATIXL_BUSMOUSE is not set
# CONFIG_BUSMOUSE is not set
# CONFIG_MS_BUSMOUSE is not set
CONFIG_PSMOUSE=y
CONFIG_82C710_MOUSE=y
# CONFIG_PC110_PAD is not set
# CONFIG_QIC02_TAPE is not set
# CONFIG_WATCHDOG is not set
# CONFIG_NVRAM is not set
# CONFIG_RTC is not set

#
# Video For Linux
#
# CONFIG_VIDEO_DEV is not set

#
# Joystick support
#
# CONFIG_JOYSTICK is not set
# CONFIG_DTLK is not set

#
# Ftape, the floppy tape device driver
#
# CONFIG_FTAPE is not set

#
# Filesystems
#
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_FAT_FS is not set
# CONFIG_MSDOS_FS is not set
# CONFIG_UMSDOS_FS is not set
# CONFIG_VFAT_FS is not set
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
# CONFIG_MINIX_FS is not set
# CONFIG_NTFS_FS is not set
# CONFIG_HPFS_FS is not set
CONFIG_PROC_FS=y
CONFIG_DEVPTS_FS=y
# CONFIG_ROMFS_FS is not set
CONFIG_EXT2_FS=y
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set

#
# Network File Systems
#
# CONFIG_CODA_FS is not set
CONFIG_NFS_FS=y
# CONFIG_NFSD_SUN is not set
CONFIG_SUNRPC=y
CONFIG_LOCKD=y
# CONFIG_SMB_FS is not set
# CONFIG_NCP_FS is not set

#
# Partition Types
#
# CONFIG_BSD_DISKLABEL is not set
# CONFIG_MAC_PARTITION is not set
# CONFIG_SMD_DISKLABEL is not set
# CONFIG_SOLARIS_X86_PARTITION is not set
CONFIG_NLS=y

#
# Native Language Support
#
# CONFIG_NLS_CODEPAGE_437 is not set
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_1 is not set
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set

#
# Console drivers
#
CONFIG_VGA_CONSOLE=y
# CONFIG_VIDEO_SELECT is not set

#
# Sound
#
# CONFIG_SOUND is not set

#
# Kernel hacking
#
CONFIG_MAGIC_SYSRQ=y
\
 
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