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Subject2.4.1 oops.
One-line Summary: Denied services on the machine.  Lack of responsiveness

Detailed Summary: Server remained responsive but did not provide service.
I was able to ping the machine and telnet to open ports but no data was
sent back on these open ports. As far as current connections were
concerned, i was not able to break out of my current process but i was
able to send data (enter, etc).

Keywords: Kernel, memory

Kernel version: Linux version 2.4.1 (root@crazy.hick.org) (gcc version
2.95.2 20000220 (Debian GNU/Linux)) #1 Sat Feb 3 12:57:48 CST 2001

Trigger: unsure.

Environment:

ver_linux output:

-- Versions installed: (if some fields are empty or look
-- unusual then possibly you have very old versions)
Linux crazy.hick.org 2.4.1 #1 Sat Feb 3 12:57:48 CST 2001 i586 unknown
Kernel modules 2.1.85
Gnu C 2.95.2
Gnu Make 3.79.1
Binutils 2.9.5.0.16
Linux C Library 2.2.1
Dynamic linker ldd (GNU libc) 2.2.1
Linux C++ Library 2.7.2
Procps 2.0.2
Mount 2.7l
Net-tools 2.01
Console-tools 0.2.1
Sh-utils 1.16
Modules Loaded


CPU Information:

processor : 0
vendor_id : AuthenticAMD
cpu family : 5
model : 8
model name : AMD-K6(tm) 3D processor
stepping : 12
cpu MHz : 350.807
cache size : 64 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr mce cx8 pge mmx syscall 3dnow
k6_mtrr
bogomips : 699.59

Module information:

No modules.

IO Ports and IO mem:

0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
02f8-02ff : serial(set)
0376-0376 : ide1
03c0-03df : vga+
03f6-03f6 : ide0
03f8-03ff : serial(set)
0cf8-0cff : PCI conf1
5000-50ff : VIA Technologies, Inc. VT82C586B ACPI
d000-dfff : PCI Bus #01
e000-e00f : VIA Technologies, Inc. Bus Master IDE
e400-e41f : VIA Technologies, Inc. UHCI USB
e400-e41f : usb-uhci
e800-e87f : 3Com Corporation 3c905B 100BaseTX [Cyclone]
e800-e87f : eth0

00000000-0009fbff : System RAM
0009fc00-0009ffff : System RAM
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000f0000-000fffff : System ROM
00100000-05ffffff : System RAM
00100000-002396b1 : Kernel code
002396b2-002aa417 : Kernel data
e0000000-e3ffffff : VIA Technologies, Inc. VT82C597 [Apollo VP3]
e5000000-e500007f : 3Com Corporation 3c905B 100BaseTX [Cyclone]
ffff0000-ffffffff : reserved


PCI information:

00:00.0 Host bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3] (rev
04)
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 16
Region 0: Memory at e0000000 (32-bit, prefetchable) [size=64M]
Capabilities: [a0] AGP version 1.0
Status: RQ=7 SBA+ 64bit- FW- Rate=x1,x2
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>

00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3 AGP]
(prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fff00000-000fffff
Prefetchable memory behind bridge: fff00000-000fffff
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-

00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586/A/B PCI-to-ISA [Apollo
VP] (rev 47)
Subsystem: VIA Technologies, Inc. MVP3 ISA Bridge
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop-
ParErr- Stepping+ SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0

00:07.1 IDE interface: VIA Technologies, Inc. VT82C586 IDE [Apollo] (rev
06) (prog-if 8a [Master SecP PriP])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 64
Region 4: I/O ports at e000 [size=16]

00:07.2 USB Controller: VIA Technologies, Inc. VT82C586B USB (rev 02)
(prog-if 00 [UHCI])
Subsystem: Unknown device 0925:1234
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 64, cache line size 08
Interrupt: pin D routed to IRQ 11
Region 4: I/O ports at e400 [size=32]

00:07.3 Host bridge: VIA Technologies, Inc. VT82C586B ACPI (rev 10)
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-

00:0a.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone]
(rev 30)
Subsystem: 3Com Corporation 3C905B Fast Etherlink XL 10/100
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 64 (2500ns min, 2500ns max), cache line size 08
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at e800 [size=128]
Region 1: Memory at e5000000 (32-bit, non-prefetchable) [size=128]
Expansion ROM at e4000000 [disabled] [size=128K]
Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
PME(D0-,D1+,D2+,D3hot+,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-


SCSI information:

No SCSI drives.


Other information:

At this time I have no other specific information. If more detail
is needed please contact me. I've attached the ksymoops output as
well, although I'm not sure if I ran it correctly. I've included the
syslog output as well as something strange that I noticed:

Feb 9 10:11:26 crazy kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000020
Feb 9 10:11:26 crazy kernel: printing eip:
Feb 9 10:11:26 crazy kernel: c013ecec
Feb 9 10:11:26 crazy kernel: *pde = 00000000
Feb 9 10:11:26 crazy kernel: Oops: 0000
Feb 9 10:11:26 crazy kernel: CPU: 0
Feb 9 10:11:26 crazy kernel: EIP: 0010:[find_inode+28/72]
Feb 9 10:11:26 crazy kernel: EFLAGS: 00010217
Feb 9 10:11:26 crazy kernel: eax: 00000000 ebx: 00000000 ecx:
0000001a edx: 0000003b
Feb 9 10:11:26 crazy kernel: esi: 00000000 edi: 00000000 ebp:
000e283b esp: c548de88
Feb 9 10:11:26 crazy kernel: ds: 0018 es: 0018 ss: 0018
Feb 9 10:11:26 crazy kernel: Process cpp (pid: 16906, stackpage=c548d000)
Feb 9 10:11:26 crazy kernel: Stack: 000e283b c11e01d8 000e283b c5fcd600
c013f0b1 c5fcd600 000e283b c11e01d8
Feb 9 10:11:26 crazy kernel: 00000000 00000000 000e283b c146c960
c079fb80 c552e440 c014c213 c5fcd600
Feb 9 10:11:26 crazy kernel: 000e283b 00000000 00000000 fffffff4
c079fb80 c146c960 c270e4d4 c01361db
Feb 9 10:11:26 crazy kernel: Call Trace: [iget4+69/204]
[ext2_lookup+91/128] [real_lookup+83/196] [path_walk+1381/1964]
[open_namei+116/1408] [filp_open+51/84] [sys_open+56/180]
Feb 9 10:11:26 crazy kernel: [system_call+51/64]
Feb 9 10:11:26 crazy kernel:
Feb 9 10:11:26 crazy kernel: Code: 39 6e 20 75 ef 8b 44 24 14 39 86 8c 00
00 00 75 e3 85 ff 74
Feb 9 10:13:11 crazy kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000020
Feb 9 10:13:11 crazy kernel: printing eip:
Feb 9 10:13:11 crazy kernel: c013ecec
Feb 9 10:13:11 crazy kernel: *pde = 00000000
Feb 9 10:13:11 crazy kernel: Oops: 0000
Feb 9 10:13:11 crazy kernel: CPU: 0
Feb 9 10:13:11 crazy kernel: EIP: 0010:[find_inode+28/72]
Feb 9 10:13:11 crazy kernel: EFLAGS: 00010213
Feb 9 10:13:11 crazy kernel: eax: 00000000 ebx: 00000000 ecx:
0000001a edx: 00000873
Feb 9 10:13:11 crazy kernel: esi: 00000000 edi: 00000000 ebp:
00001053 esp: c420dc24
Feb 9 10:13:11 crazy kernel: ds: 0018 es: 0018 ss: 0018
Feb 9 10:13:11 crazy kernel: Process bash (pid: 16961,
stackpage=c420d000)
Feb 9 10:13:11 crazy kernel: Stack: 00001053 c11e4398 00001053 c5fcd600
c013f0b1 c5fcd600 00001053 c11e4398
Feb 9 10:13:11 crazy kernel: 00000000 00000000 00001053 c3dc9bc0
c5fb09c0 c5ffd620 c014c213 c5fcd600
Feb 9 10:13:11 crazy kernel: 00001053 00000000 00000000 fffffff4
c5fb09c0 c3dc9bc0 c209ba48 c01361db
Feb 9 10:13:11 crazy kernel: Call Trace: [iget4+69/204]
[ext2_lookup+91/128] [real_lookup+83/196] [path_walk+1381/1964]
[file_read_actor+0/104] [open_exec+42/192] [load_elf_binary+611/2564]
Feb 9 10:13:11 crazy kernel: [load_elf_binary+695/2564]
[load_elf_binary+0/2564] [find_proto+102/168] [fw_in+241/620]
[update_atime+68/84] [do_generic_file_read+1300/1312]
[__alloc_pages+219/720] [search_binary_handler+91/256]
Feb 9 10:13:11 crazy kernel: [do_execve+405/488]
[sys_execve+47/96] [system_call+51/64]
Feb 9 10:13:11 crazy kernel:
Feb 9 10:13:11 crazy kernel: Code: 39 6e 20 75 ef 8b 44 24 14 39 86 8c 00
00 00 75 e3 85 ff 74
Feb 9 10:14:01 crazy kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000020
Feb 9 10:14:01 crazy kernel: printing eip:
Feb 9 10:14:01 crazy kernel: c013ecec
Feb 9 10:14:01 crazy kernel: *pde = 00000000
Feb 9 10:14:01 crazy kernel: Oops: 0000
Feb 9 10:14:01 crazy kernel: CPU: 0
Feb 9 10:14:01 crazy kernel: EIP: 0010:[find_inode+28/72]
Feb 9 10:14:01 crazy kernel: EFLAGS: 00010217
Feb 9 10:14:01 crazy kernel: eax: 00000000 ebx: 00000000 ecx:
0000001a edx: 0000003b
Feb 9 10:14:01 crazy kernel: esi: 00000000 edi: 00000000 ebp:
000f489b esp: c456bebc
Feb 9 10:14:01 crazy kernel: ds: 0018 es: 0018 ss: 0018
Feb 9 10:14:01 crazy kernel: Process cron (pid: 193, stackpage=c456b000)
Feb 9 10:14:01 crazy kernel: Stack: 000f489b c11e01d8 000f489b c5fcd600
c013f0b1 c5fcd600 000f489b c11e01d8
Feb 9 10:14:01 crazy kernel: 00000000 00000000 000f489b c39a1520
c5f58080 c5ffd7a0 c014c213 c5fcd600
Feb 9 10:14:01 crazy kernel: 000f489b 00000000 00000000 fffffff4
c5f58080 c39a1520 c21f3800 c01361db
Feb 9 10:14:01 crazy kernel: Call Trace: [iget4+69/204]
[ext2_lookup+91/128] [real_lookup+83/196] [path_walk+1381/1964]
[getname+91/152] [__user_walk+60/88] [sys_stat64+22/120]
Feb 9 10:14:01 crazy kernel: [system_call+51/64]
Feb 9 10:14:01 crazy kernel:
Feb 9 10:14:01 crazy kernel: Code: 39 6e 20 75 ef 8b 44 24 14 39 86 8c 00
00 00 75 e3 85 ff 74
Feb 9 10:15:29 crazy sendmail[16972]: f19GFOv16972:
from=<owner-pen-test@SECURITYFOCUS.COM>, size=5194, class=0, nrcpts=1,
msgid=<471ADE9820DCD411A46
E00B0D079F2830AB1E1@Xnetexch>, proto=ESMTP, daemon=MTA,
relay=lists.securityfocus.com [66.38.151.7]
Feb 9 10:16:30 crazy sendmail[127]: rejecting connections on daemon MTA:
load average: 12
Feb 9 10:16:30 crazy sendmail[127]: rejecting connections on daemon MSA:
load average: 12
Feb 9 10:16:45 crazy sendmail[127]: rejecting connections on daemon MTA:
load average: 12
Feb 9 10:16:45 crazy sendmail[127]: rejecting connections on daemon MSA:
load average: 12
Feb 9 10:17:00 crazy sendmail[127]: rejecting connections on daemon MTA:
load average: 13
Feb 9 10:17:00 crazy sendmail[127]: rejecting connections on daemon MSA:
load average: 13
Feb 9 10:17:15 crazy sendmail[127]: rejecting connections on daemon MTA:
load average: 13
Feb 9 10:17:15 crazy sendmail[127]: rejecting connections on daemon MSA:
load average: 13
Feb 9 10:17:30 crazy sendmail[127]: rejecting connections on daemon MTA:
load average: 14
Feb 9 10:17:30 crazy sendmail[127]: rejecting connections on daemon MSA:
load average: 14
Feb 9 10:17:45 crazy sendmail[127]: rejecting connections on daemon MTA:
load average: 14
Feb 9 10:17:45 crazy sendmail[127]: rejecting connections on daemon MSA:
load average: 14
Feb 9 10:18:00 crazy sendmail[127]: rejecting connections on daemon MTA:
load average: 14
..... and so on.....


Sorry if this has been directed at the wrong E-mail address. Please let
me know if you have any idea on what might be causing this.

Thanks,

Matt Miller
mmiller@hick.org
ksymoops 2.3.7 on i586 2.4.1. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.1/ (default)
-m /System.map (specified)

No modules in ksyms, skipping objects
Warning (read_lsmod): no symbols in lsmod, is /proc/modules a valid lsmod file?
Feb 9 10:11:26 crazy kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000020
Feb 9 10:11:26 crazy kernel: c013ecec
Feb 9 10:11:26 crazy kernel: *pde = 00000000
Feb 9 10:11:26 crazy kernel: Oops: 0000
Feb 9 10:11:26 crazy kernel: CPU: 0
Feb 9 10:11:26 crazy kernel: EIP: 0010:[find_inode+28/72]
Feb 9 10:11:26 crazy kernel: EFLAGS: 00010217
Feb 9 10:11:26 crazy kernel: eax: 00000000 ebx: 00000000 ecx: 0000001a edx: 0000003b
Feb 9 10:11:26 crazy kernel: esi: 00000000 edi: 00000000 ebp: 000e283b esp: c548de88
Feb 9 10:11:26 crazy kernel: ds: 0018 es: 0018 ss: 0018
Feb 9 10:11:26 crazy kernel: Process cpp (pid: 16906, stackpage=c548d000)
Feb 9 10:11:26 crazy kernel: Stack: 000e283b c11e01d8 000e283b c5fcd600 c013f0b1 c5fcd600 000e283b c11e01d8
Feb 9 10:11:26 crazy kernel: 00000000 00000000 000e283b c146c960 c079fb80 c552e440 c014c213 c5fcd600
Feb 9 10:11:26 crazy kernel: 000e283b 00000000 00000000 fffffff4 c079fb80 c146c960 c270e4d4 c01361db
Feb 9 10:11:26 crazy kernel: Call Trace: [iget4+69/204] [ext2_lookup+91/128] [real_lookup+83/196] [path_walk+1381/1964] [open_namei+116/1408] [filp_open+51/84] [sys_open+56/180]
Feb 9 10:11:26 crazy kernel: Code: 39 6e 20 75 ef 8b 44 24 14 39 86 8c 00 00 00 75 e3 85 ff 74
Using defaults from ksymoops -t elf32-i386 -a i386
Error (pclose_local): Oops_decode pclose failed 0xffffffff

Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: 39 6e 20 cmp %ebp,0x20(%esi)
Code; 00000003 Before first symbol
3: 75 ef jne fffffff4 <_EIP+0xfffffff4> fffffff4 <END_OF_CODE+3fce417c/????>
Code; 00000005 Before first symbol
5: 8b 44 24 14 mov 0x14(%esp,1),%eax
Code; 00000009 Before first symbol
9: 39 86 8c 00 00 00 cmp %eax,0x8c(%esi)
Code; 0000000f Before first symbol
f: 75 e3 jne fffffff4 <_EIP+0xfffffff4> fffffff4 <END_OF_CODE+3fce417c/????>
Code; 00000011 Before first symbol
11: 85 ff test %edi,%edi
Code; 00000013 Before first symbol
13: 74 00 je 15 <_EIP+0x15> 00000015 Before first symbol


1 warning and 1 error issued. Results may not be reliable.
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