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SubjectCrash due to kernel bug

The RH7.1 system with 2.4.2 kernel crashed and the /var/log/messages had
this report.

Nov 4 08:55:19 mercury kernel: kernel BUG at inode.c:527!
Nov 4 08:55:19 mercury kernel: invalid operand: 0000
Nov 4 08:55:19 mercury kernel: CPU: 0
Nov 4 08:55:19 mercury kernel: EIP: 0010:[prune_icache+148/272]
Nov 4 08:55:19 mercury kernel: EIP: 0010:[<c0146954>]
Nov 4 08:55:19 mercury kernel: EFLAGS: 00010286
Nov 4 08:55:19 mercury kernel: eax: 0000001b ebx: c94b00e8 ecx: fffffffe
edx: 00000000
Nov 4 08:55:19 mercury kernel: esi: c94b00e0 edi: c899cde8 ebp: c147bf98
esp: c147bf74
Nov 4 08:55:19 mercury kernel: ds: 0018 es: 0018 ss: 0018
Nov 4 08:55:19 mercury kernel: Process kswapd (pid: 4,
stackpage=c147b000)
Nov 4 08:55:19 mercury kernel: Stack: c0214b5b c0214c3e 0000020f 00000132
c94b0
2c8 cd246de8 00010f00 00000004
Nov 4 08:55:19 mercury kernel: 00000020 00000004 c0146a05 000002b0
c012cba6 00000004 00000004 c144be6c

proc/modules
tulip 38096 2 (autoclean)
8139too 16480 1 (autoclean)
usb-uhci 20848 0 (unused)
usbcore 49632 1 [usb-uhci]
sd_mod 11808 0 (unused)
scsi_mod 94304 1 [sd_mod]

/proc/cpuinfo

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 5
model name : Pentium II (Deschutes)
stepping : 2
cpu MHz : 400.915
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov
pat p
se36 mmx fxsr
bogomips : 799.53


What could be the reason for this crash.?


regards,
Nagamani.
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