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SubjectPROBLEM: kernel oops with Linux 2.2.16 shortly after misc cronjob start

1. Kernel oopses after cronjob starts

2. I recently noticed that my maschine crashes exactly on cronjob times.
It seems to me that it is mainly caused (because it happened 2 times at 4 o clock) by
the mandrake security scripts i installed (msec-0.9-14mdk) - after some network failure
(eg router going crazy or ircd crashing) between 1 and 4 o clock the included portscan(I! asume)
triggers the kernel oops. Perhaps another thing that may urge this is portsentry 1.0 that
keeps lots of ports open for scandetection.

4. Linux version 2.2.16 (root@keule.aii.at) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #2 Fri Jun 9 23:08:15 CEST 2000
The kernel includes the openwall patch.
IPV6 is enabled but not used(afaik)

5.
OOPS:
---
Dec 18 01:00:10 keule kernel: Unable to handle kernel paging request at virtual address 050b80c0
Dec 18 01:00:10 keule kernel: current->tss.cr3 = 00101000, %%cr3 = 00101000
Dec 18 01:00:10 keule kernel: *pde = 00000000
Dec 18 01:00:10 keule kernel: Oops: 0000
Dec 18 01:00:10 keule kernel: CPU: 0
Dec 18 01:00:10 keule kernel: EIP: 0010:[dput+14/328]
Dec 18 01:00:10 keule kernel: EFLAGS: 00010286
Dec 18 01:00:10 keule kernel: eax: c50b813c ebx: 050b80c0 ecx: c50b8fc0 edx: c50b81bc
Dec 18 01:00:10 keule kernel: esi: 050b80c0 edi: c50b80c0 ebp: 00000001 esp: c09fff5c
Dec 18 01:00:10 keule kernel: ds: 0018 es: 0018 ss: 0018
Dec 18 01:00:10 keule kernel: Process sh (pid: 23902, process nr: 101, stackpage=c09ff000)
Dec 18 01:00:10 keule kernel: Stack: c0123d4a c50b80c0 c6b6aec0 00000000 c50b80c0 c0124df7 c6b6aec0 c6b6aec0
Dec 18 01:00:10 keule kernel: c6b6aec0 c0123da6 c6b6aec0 00200087 00000000 c7395be0 c0116311 c6b6aec0
Dec 18 01:00:10 keule kernel: c7395be0 c09fe000 0021e57c 00000000 bffffde8 00000000 c09fe000 c011646b
Dec 18 01:00:10 keule kernel: Call Trace: [__fput+62/72] [fput+23/72] [filp_close+82/92] [do_exit+297/628] [sys_exit+15/16] [system_call+52/56]

---
Jan 3 04:02:35 keule kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000012
Jan 3 04:02:35 keule kernel: current->tss.cr3 = 05e34000, %%cr3 = 05e34000
Jan 3 04:02:35 keule kernel: *pde = 077cc067
Jan 3 04:02:35 keule kernel: *pte = 00000000
Jan 3 04:02:35 keule kernel: Oops: 0002
Jan 3 04:02:35 keule kernel: CPU: 0
Jan 3 04:02:35 keule kernel: EIP: 0010:[prune_dcache+126/300]
Jan 3 04:02:35 keule kernel: EFLAGS: 00010282
Jan 3 04:02:35 keule kernel: eax: c3930300 ebx: c2c05248 ecx: 00000012 edx: c2c05260
Jan 3 04:02:35 keule kernel: esi: c2c05228 edi: c2c05220 ebp: 000000e0 esp: c67a1e90
Jan 3 04:02:35 keule kernel: ds: 0018 es: 0018 ss: 0018
Jan 3 04:02:35 keule kernel: Process slocate (pid: 4127, process nr: 58, stackpage=c67a1000)
Jan 3 04:02:35 keule kernel: Stack: c01d0124 00001006 c67a1ed0 00000000 00001006 c0130be7 fffff0d9 00001006
Jan 3 04:02:35 keule kernel: 00000000 c01eedf8 c01d0124 c01eedf8 c7962800 c5694330 c569437c 00000000
Jan 3 04:02:35 keule kernel: c67a1ed0 c67a1ed0 c0130c4e 00001006 00000000 c01eedf8 c01d0124 c01eedf8
Jan 3 04:02:35 keule kernel: Call Trace: [try_to_free_inodes+199/264] [grow_inodes+30/384] [get_new_inode+173/280] [get_new_inode+185/280] [iget+88/96] [ext2_lookup+84/124] [real_lookup+79/160]
Jan 3 04:02:35 keule kernel: [lookup_dentry+296/488] [__namei+40/88] [sys_newlstat+14/96] [system_call+52/56]
Jan 3 04:02:35 keule kernel: Code: 89 01 89 56 38 89 56 3c 83 7f 1c 01 0f 94 c0 31 c9 88 c1 89
---
Dec 20 19:11:58 keule kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000025
Dec 20 19:11:58 keule kernel: current->tss.cr3 = 00c1d000, %%cr3 = 00c1d000
Dec 20 19:11:58 keule kernel: *pde = 0204d067
Dec 20 19:11:58 keule kernel: *pte = 00000000
Dec 20 19:11:58 keule kernel: Oops: 0000
Dec 20 19:11:58 keule kernel: CPU: 0
Dec 20 19:11:58 keule kernel: EIP: 0010:[max_select_fd+78/188]
Dec 20 19:11:58 keule kernel: EFLAGS: 00010a13
Dec 20 19:11:58 keule kernel: eax: 00000025 ebx: 00000000 ecx: c41bfee4 edx: 00000000
Dec 20 19:11:58 keule kernel: esi: 00000010 edi: 00000005 ebp: 00000001 esp: c41bff08
Dec 20 19:11:58 keule kernel: ds: 0018 es: 0018 ss: 0018
Dec 20 19:11:58 keule kernel: Process proxyper (pid: 22976, process nr: 58, stackpage=c41bf000)
Dec 20 19:11:58 keule kernel: c012df22 00000005 c41bff70 c41bff6c 00000000 bfffefbc c41bffc0 bfffefa0
Dec 20 19:11:58 keule kernel: c73cf92c c7fec400 00000004 00000001 00000006 c41bff70 00000001 c41be000
Dec 20 19:11:58 keule kernel: Call Trace: [sys_select+1014/1360] [old_select+86/104] [system_call+52/56]
Dec 20 19:11:58 keule kernel: Code: 0b 14 98 89 d0 8b 55 08 0b 04 9a 21 44 24 10 74 50 8b 07 f7
---


Dec 16 13:19:34 keule kernel: Unable to handle kernel paging request at virtual address 38c4a693
Dec 16 13:19:34 keule kernel: current->tss.cr3 = 04285000, %%cr3 = 04285000
Dec 16 13:19:34 keule kernel: *pde = 00000000
Dec 16 13:19:34 keule kernel: Oops: 0000
Dec 16 13:19:34 keule kernel: CPU: 0
Dec 16 13:19:34 keule kernel: EIP: 0010:[iput+24/508]
Dec 16 13:19:34 keule kernel: EFLAGS: 00010206
Dec 16 13:19:34 keule kernel: eax: 38c4a67b ebx: 00000000 ecx: c71870b0 edx: c01cd694
Dec 16 13:19:34 keule kernel: esi: c4d140e0 edi: c1ee62a0 ebp: bfffe4f0 esp: c542bf50
Dec 16 13:19:34 keule kernel: ds: 0018 es: 0018 ss: 0018
Dec 16 13:19:34 keule kernel: Process ftps (pid: 30881, process nr: 87, stackpage=c542b000)
Dec 16 13:19:34 keule kernel: Stack: c1ee62a0 c0149cf7 c4d140e0 c4d14ee0 c014a0a5 c4d14f7c c32aee60 c0123d2b
Dec 16 13:19:34 keule kernel: c4d14ee0 c32aee60 c32aee60 00000000 c1ee62a0 c0124df7 c32aee60 c32aee60
Dec 16 13:19:34 keule kernel: c32aee60 c0123da6 c32aee60 00000004 c32aee60 fffffff7 c0123e0d c32aee60
Dec 16 13:19:34 keule kernel: Call Trace: [sock_release+75/80] [sock_close+53/60] [__fput+31/72] [fput+23/72] [filp_close+82/92] [sys_close+93/104] [system_call+52/56]
Dec 16 13:19:34 keule kernel: Code: 8b 40 18 85 c0 74 02 89 c3 85 db 74 0d 8b 43 08 85 c0 74 06


7.
7.1
Red Hat Linux release 6.1 (Cartman)
vixie-cron-3.0.1-39
crontabs-1.7-7

The server uses 3 eth devices - access is limited by firewall
services are mainly
ssh,http,ircd,mysql,simap(stunnel),smtp



ls /etc/cron.daily/:
---
./ logrotate* rdate.cron* tmpwatch*
../ makewhatis.cron* slocate.cron* webalizer.cron*
---

/etc/crontab:
---
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/

# run-parts
01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily
22 4 * * 0 root run-parts /etc/cron.weekly
42 4 1 * * root run-parts /etc/cron.monthly
# Mandrake-Security : if you remove this comment, remove the next line too.
0 0 * * * root /etc/security/msec/cron-sh/security.sh
---

7.2
processor : 0
vendor_id : GenuineIntel
cpu family : 5
model : 2
model name : Pentium 75 - 200
stepping : 12
cpu MHz : 166.095
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : yes
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr mce cx8
bogomips : 330.96

7.3
cat /proc/modules
3c509 5812 1 (autoclean)


--
Sebastian Wenzler
InnNet GmbH Internet-Services
http://www.InnNet.de
Gewerbering 12
D-83549 Eiselfing
Tel. 08071/9233-0
Fax 08071/9233-29
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