by I have run a RedHat 6.1 box a couple of months without any problem, but
a few days ago it becomes unstable. I thought that it was a hardware
problem so I changed the disk to an identical machine, but it didn't
work. Then I installed a new box from scratch and copied the
configuration files to the new PC, it worked well for a week and then
began to fail again. Any ideas?
Here are some of the messages that appears in my log.
Dec 16 19:33:54 term1 kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000000 Dec 16 19:33:54 term1 kernel:
current->tss.cr3 = 0769e000, %cr3 = 0769e000 Dec 16 19:33:54 term1
kernel:
*pde = 00000000 Dec 16 19:33:54 term1 kernel: Oops: 0002
Dec 16 19:33:54 term1 kernel: CPU: 0
Dec 16 19:33:54 term1 kernel: EIP: 0010:[sprintf+1168/4696]
Dec 16 19:33:54 term1 kernel: EFLAGS: 00010246
Dec 16 19:33:54 term1 kernel: eax: 00000000 ebx: c76c8000 ecx:
00000006 edx: bfffe998
Dec 16 19:33:54 term1 kernel: esi: bfffe980 edi: 00000000 ebp:
fffffff2 esp: c76c9f90
Dec 16 19:33:54 term1 kernel: ds: 0018 es: 0018 ss: 0018
Dec 16 19:33:54 term1 kernel: Process ypserv (pid: 277, process nr: 8,
stackpage=c76c9000)
Dec 16 19:33:54 term1 kernel: Stack: c76c8000 00001000 00000000
bfffea04 00000000 c76c8000 c0404960 c0129623
Dec 16 19:33:54 term1 kernel: c0404960 c76c8000 bfffe9a4
00000009 c01095a8 bfffe980 bfffe930 4012e1b4
Dec 16 19:33:54 term1 kernel: 00001000 00000000 bfffea04
0000005a 0000002b 0000002b 0000005a 400eec7d
Dec 16 19:33:54 term1 kernel: Call Trace: [sys_newfstat+115/124]
[system_call+52/56]
Dec 16 19:33:54 term1 kernel: Code: f3 ab 58 59 c1 e1 02 e9 27 18 f4 ff
51 50 31 c0 f3 ab 58 59
Dec 16 19:33:55 term1 ypbind[295]: 200.10.228.228: RPC: Unable to
receive; errno = Connection refused
Dec 7 16:32:49 term10 kernel: Unable to handle kernel paging request
at virtual address 75ff04c6
Dec 7 16:32:49 term10 kernel: current->tss.cr3 = 05ffd000, %cr3 =
05ffd000
Dec 7 16:32:49 term10 kernel: *pde = 00000000
Dec 7 16:32:49 term10 kernel: Oops: 0002
Dec 7 16:32:49 term10 kernel: CPU: 0
Dec 7 16:32:49 term10 kernel: EIP: 0010:[make_request+1070/1384]
Dec 7 16:32:49 term10 kernel: EFLAGS: 00010002
Dec 7 16:32:49 term10 kernel: eax: ffffffff ebx: 00000002 ecx:
c0232f23 edx: c0001680
Dec 7 16:32:49 term10 kernel: esi: 00000002 edi: c00016e0 ebp:
c60f5f6c esp: c60f5f40
Dec 7 16:32:49 term10 kernel: ds: 0018 es: 0018 ss: 0018
Dec 7 16:32:49 term10 kernel: Process update (pid: 637, process nr:
49, stackpage=c60f5000)
Dec 7 16:32:49 term10 kernel: Stack: c60f5fb4 00000003 00000080
00000002 0301aa00 0000000c 00000246 00000080
Dec 7 16:32:49 term10 kernel: 000000aa 00000000 00000002
00000001 c0176274 00000003 00000001 c00016e0
Dec 7 16:32:49 term10 kernel: c0221ba0 0000000d 00000002
00000008 00000400 c0126f27 00000001 00000001
Dec 7 16:32:49 term10 kernel: Call Trace: [ll_rw_block+400/520]
[sync_old_buffers+215/400] [sys_bdflush+44/124] [system_call+52/56]
Dec 7 16:32:49 term10 kernel: Code: ff 83 c4 04 ff 75 ec 9d e9 21 01
00 00 90 8b 49 30 85 c9 0f
Dec 8 09:40:57 term1 kernel: Unable to handle kernel paging request at
virtual address 8c57fa20
Dec 8 09:40:57 term1 kernel: current->tss.cr3 = 00101000, %cr3 =
00101000
Dec 8 09:40:57 term1 kernel: *pde = 00000000
Dec 8 09:40:57 term1 kernel: Oops: 0002
Dec 8 09:40:57 term1 kernel: CPU: 0
Dec 8 09:40:57 term1 kernel: EIP: 0010:[<c000a600>]
Dec 8 09:40:57 term1 kernel: EFLAGS: 00010282
Dec 8 09:40:57 term1 kernel: eax: c5d7fcb0 ebx: 00000000 ecx:
c3d3a188 edx: c3d3a188
Dec 8 09:40:57 term1 kernel: esi: c3d3b800 edi: 00000002 ebp:
c7829e99 esp: c3d0bf08
Dec 8 09:40:57 term1 kernel: ds: 0018 es: 0018 ss: 0018
Dec 8 09:40:57 term1 kernel: Process nfsd (pid: 496, process nr: 34,
stackpage=c3d0b000)
Dec 8 09:40:57 term1 kernel: Stack: 02000000 c3d3b800 c3d3b800
c3d3b800 00000000 c782a13f c3d3a120 c3d3b800
Dec 8 09:40:57 term1 kernel: c3a08000 c3d3a120 c3d3a03c
c3d3a15c c3d3b800 c3d0bf70 c3a08000 c782890b
Dec 8 09:40:57 term1 kernel: c3d3b800 c3d3a120 00000000
00000000 c3d3b800 c78315a0 c3d24014 c7828423
Dec 8 09:40:57 term1 kernel: Call Trace: [<c782a13f>] [<c782890b>]
[<c78315a0>] [<c7828423>] [<c78315a0>] [<c7816354>] [<c78319a0>]
Dec 8 09:40:57 term1 kernel: [<c783152c>] [<c7828221>]
[kernel_thread+35/48]
Dec 8 09:40:57 term1 kernel: Code: 00 a4 00 c0 00 a8 00 c0 04 03 00 00
00 04 00 00 0a 00 00 00
Dec 8 19:54:30 term1 kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000000
Dec 8 19:54:30 term1 kernel: current->tss.cr3 = 07702000, %cr3 =
07702000
Dec 8 19:54:30 term1 kernel: *pde = 00000000
Dec 8 19:54:30 term1 kernel: Oops: 0002
Dec 8 19:54:30 term1 kernel: CPU: 0
Dec 8 19:54:30 term1 kernel: EIP: 0010:[sprintf+1168/4696]
Dec 8 19:54:30 term1 kernel: EFLAGS: 00010246
Dec 8 19:54:30 term1 kernel: eax: 00000000 ebx: c76fe000 ecx:
00000006 edx: bfffe998
Dec 8 19:54:30 term1 kernel: esi: bfffe980 edi: 00000000 ebp:
fffffff2 esp: c76fff90
Dec 8 19:54:30 term1 kernel: ds: 0018 es: 0018 ss: 0018
Dec 8 19:54:30 term1 kernel: Process ypserv (pid: 267, process nr: 7,
stackpage=c76ff000)
Dec 8 19:54:30 term1 kernel: Stack: c76fe000 00001000 00000000
bfffea04 00000000 c76fe000 c3b24aa0 c0129623
Dec 8 19:54:30 term1 kernel: c3b24aa0 c76fe000 bfffe9a4
0000000a c01095a8 bfffe980 bfffe930 4012e1b4
Dec 8 19:54:30 term1 kernel: 00001000 00000000 bfffea04
0000005a 0000002b 0000002b 0000005a 400eec7d
Dec 8 19:54:30 term1 kernel: Call Trace: [sys_newfstat+115/124]
[system_call+52/56]
Dec 8 19:54:30 term1 kernel: Code: f3 ab 58 59 c1 e1 02 e9 27 18 f4 ff
51 50 31 c0 f3 ab 58 59
Dec 9 02:07:18 term1 kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000000
Dec 9 02:07:18 term1 kernel: current->tss.cr3 = 032c2000, %cr3 =
032c2000
Dec 9 02:07:18 term1 kernel: *pde = 00000000
Dec 9 02:07:18 term1 kernel: Oops: 0002
Dec 9 02:07:18 term1 kernel: CPU: 0
Dec 9 02:07:18 term1 kernel: EIP: 0010:[sprintf+1168/4696]
Dec 9 02:07:18 term1 kernel: EFLAGS: 00010246
Dec 9 02:07:18 term1 kernel: eax: 00000000 ebx: c32c0000 ecx:
00000006 edx: bfffea64
Dec 9 02:07:18 term1 kernel: esi: bfffea4c edi: 00000000 ebp:
fffffff2 esp: c32c1f90
Dec 9 02:07:18 term1 kernel: ds: 0018 es: 0018 ss: 0018
Dec 9 02:07:18 term1 kernel: Process portmap (pid: 250, process nr:
13, stackpage=c32c1000)
Dec 9 02:07:18 term1 kernel: Stack: c32c0000 00001000 00000000
bfffead0 00000000 c32c0000 c7578f00 c0129623
Dec 9 02:07:18 term1 kernel: c7578f00 c32c0000 bfffea70
00000005 c01095a8 bfffea4c bfffe9fc 401041b4
Dec 9 02:07:18 term1 kernel: 00001000 00000000 bfffead0
0000005a 0000002b 0000002b 0000005a 400c4c7d
Dec 9 02:07:18 term1 kernel: Call Trace: [sys_newfstat+115/124]
[system_call+52/56]
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