Виснет сервак :(

За вчера завис сервер 2 раза, /var/log/messages показал эти 2 ошибки. подскажите плиз в чём проблема?
FedoraCore 7 , стрим + ат3
Вот ошибки:

Первая

Sep 14 18:07:02 localhost kernel: BUG: unable to handle kernel paging
request at virtual address fd90f894
Sep 14 18:07:02 localhost kernel: printing eip:
Sep 14 18:07:02 localhost kernel: c04e9529
Sep 14 18:07:02 localhost kernel: *pde = 00000000
Sep 14 18:07:02 localhost kernel: Oops: 0000 [#1]
Sep 14 18:07:02 localhost kernel: SMP
Sep 14 18:07:02 localhost kernel: last sysfs file:
/devices/system/cpu/cpu1/cpufreq/scaling_setspeed
Sep 14 18:07:02 localhost kernel: Modules linked in: autofs4 hidp
rfcomm l2cap bluetooth sunrpc ipv6 acpi_cpufreq dm_multipath video sbs
i2c_ec button battery asus_acpi ac parport_pc lp parport snd_intel8x0
snd_ac97_codec snd_ac97_bus snd_seq_dummy 8139cp snd_seq_oss
snd_seq_midi_event snd_seq snd_seq_device 8139too mii snd_pcm_oss snd_mixer_oss pcspkr
floppy snd_pcm serio_raw snd_timer snd soundcore snd_page_alloc
i2c_i801 i2c_core dm_snapshot dm_zero dm_mirror dm_mod ata_piix libata sd_mod
scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd
Sep 14 18:07:02 localhost kernel: CPU: 1
Sep 14 18:07:02 localhost kernel: EIP: 0060:[<c04e9529>] Not
tainted VLI
Sep 14 18:07:02 localhost kernel: EFLAGS: 00210296 (2.6.18-1.2798.fc6
#1)
Sep 14 18:07:02 localhost kernel: EIP is at list_del+0x9/0x6c
Sep 14 18:07:02 localhost kernel: eax: fd90f894 ebx: ed09d9e4 ecx:
ed09d908 edx: 00000001
Sep 14 18:07:02 localhost kernel: esi: f1a5beb8 edi: f1a5bea8 ebp:
00110000 esp: c85b4de8
Sep 14 18:07:02 localhost kernel: ds: 007b es: 007b ss: 0068
Sep 14 18:07:02 localhost kernel: Process httpd (pid: 21544,
ti=c85b4000 task=dafd46a0 task.ti=c85b4000)
Sep 14 18:07:02 localhost kernel: Stack: f0b55694 ed09d9b0 ed09d9b0
ed09d9b0 c0463d65 cf029ef0 ed09d9b0 ed09d9b0
Sep 14 18:07:02 localhost kernel: c045fc48 f3f12a94 d1fe4bf8
00000000 c85b4e40 c85b4e40 ed09d7b8 f3f12a40
Sep 14 18:07:02 localhost kernel: f7e91840 c04609c8 00000000
c85b4e3c 00000000 0000138e c1801b60 f3f12a40
Sep 14 18:07:02 localhost kernel: Call Trace:
Sep 14 18:07:02 localhost kernel: [<c0463d65>]
anon_vma_unlink+0x1e/0x3f
Sep 14 18:07:02 localhost kernel: [<c045fc48>] free_pgtables+0x53/0xa3
Sep 14 18:07:02 localhost kernel: [<c04609c8>] exit_mmap+0x94/0xf1
Sep 14 18:07:02 localhost kernel: [<c0422d2d>] mmput+0x34/0x7a
Sep 14 18:07:02 localhost kernel: [<c0478953>]
flush_old_exec+0x60d/0x857
Sep 14 18:07:02 localhost kernel: [<c0495e45>]
load_elf_binary+0x47b/0x1597
Sep 14 18:07:02 localhost kernel: [<c0477c39>]
search_binary_handler+0xa4/0x260
Sep 14 18:07:02 localhost kernel: [<c04794b7>] do_execve+0x158/0x1f5
Sep 14 18:07:02 localhost kernel: [<c0402260>] sys_execve+0x2f/0x4f
Sep 14 18:07:02 localhost kernel: [<c0404013>] syscall_call+0x7/0xb
Sep 14 18:07:02 localhost kernel: DWARF2 unwinder stuck at
syscall_call+0x7/0xb
Sep 14 18:07:02 localhost kernel: Leftover inexact backtrace:
Sep 14 18:07:02 localhost kernel: =======================
Sep 14 18:07:02 localhost kernel: Code: 8d 46 04 e8 86 00 00 00 8d 4b
0c 8b 51 04 8d 46 0c 83 c4 14 5b 5e 5f e9 72 00 00 00 89 c3 eb e8 90 90
53 89 c3 83 ec 0c 8b 40 04 <8b> 00 39 d8 74 1c 89 5c 24 04 89 44 24 08
c7 04 24 14 1c 64 c0
Sep 14 18:07:02 localhost kernel: EIP: [<c04e9529>] list_del+0x9/0x6c
SS:ESP 0068:c85b4de8
Sep 14 18:07:02 localhost kernel: <3>BUG: sleeping function called
from invalid context at kernel/rwsem.c:20
Sep 14 18:07:02 localhost kernel: in_atomic():0, irqs_disabled():1
Sep 14 18:07:02 localhost kernel: [<c04051db>] dump_trace+0x69/0x1af
Sep 14 18:07:02 localhost kernel: [<c0405339>]
show_trace_log_lvl+0x18/0x2c
Sep 14 18:07:02 localhost kernel: [<c04058ed>] show_trace+0xf/0x11
Sep 14 18:07:02 localhost kernel: [<c04059ea>] dump_stack+0x15/0x17
Sep 14 18:07:02 localhost kernel: [<c0439446>] down_read+0x12/0x20
Sep 14 18:07:02 localhost kernel: [<c0431601>]
blocking_notifier_call_chain+0xe/0x29
Sep 14 18:07:02 localhost kernel: [<c04275e8>] do_exit+0x1b/0x776
Sep 14 18:07:02 localhost kernel: [<c040588e>] die+0x29d/0x2c2
Sep 14 18:07:02 localhost kernel: [<c061519d>]
do_page_fault+0x408/0x4db
Sep 14 18:07:02 localhost kernel: [<c0404b85>] error_code+0x39/0x40
Sep 14 18:07:02 localhost kernel: DWARF2 unwinder stuck at
error_code+0x39/0x40
Sep 14 18:07:02 localhost kernel: Leftover inexact backtrace:
Sep 14 18:07:02 localhost kernel: [<c04e9529>] list_del+0x9/0x6c
Sep 14 18:07:02 localhost kernel: [<c0463d65>]
anon_vma_unlink+0x1e/0x3f
Sep 14 18:07:02 localhost kernel: [<c045fc48>] free_pgtables+0x53/0xa3
Sep 14 18:07:02 localhost kernel: [<c04609c8>] exit_mmap+0x94/0xf1
Sep 14 18:07:02 localhost kernel: [<c0422d2d>] mmput+0x34/0x7a
Sep 14 18:07:02 localhost kernel: [<c0478953>]
flush_old_exec+0x60d/0x857
Sep 14 18:07:02 localhost kernel: [<c046f9ce>] vfs_read+0x118/0x157
Sep 14 18:07:02 localhost kernel: [<c0477ecb>] kernel_read+0x37/0x48
Sep 14 18:07:02 localhost kernel: [<c0495e45>]
load_elf_binary+0x47b/0x1597
Sep 14 18:07:02 localhost kernel: [<c046efda>] do_sync_read+0xc1/0xfb
Sep 14 18:07:02 localhost kernel: [<c0457ae7>]
__alloc_pages+0x6d/0x2aa
Sep 14 18:07:02 localhost kernel: [<c04959ca>]
load_elf_binary+0x0/0x1597
Sep 14 18:07:02 localhost kernel: [<c0477c39>]
search_binary_handler+0xa4/0x260
Sep 14 18:07:02 localhost kernel: [<c04794b7>] do_execve+0x158/0x1f5
Sep 14 18:07:02 localhost kernel: [<c0402260>] sys_execve+0x2f/0x4f
Sep 14 18:07:02 localhost kernel: [<c0404013>] syscall_call+0x7/0xb
Sep 14 18:07:02 localhost kernel: =======================


Вторая

Sep 14 19:25:21 localhost kernel: list_del corruption. next->prev
should be dda0d5a0, but was fda0d5a0
Sep 14 19:25:21 localhost kernel: ------------[ cut here ]------------
Sep 14 19:25:21 localhost kernel: kernel BUG at lib/list_debug.c:70!
Sep 14 19:25:21 localhost kernel: invalid opcode: 0000 [#1]
Sep 14 19:25:21 localhost kernel: SMP
Sep 14 19:25:21 localhost kernel: last sysfs file:
/devices/system/cpu/cpu1/cpufreq/scaling_setspeed
Sep 14 19:25:21 localhost kernel: Modules linked in: autofs4 hidp
rfcomm l2cap bluetooth sunrpc ipv6 acpi_cpufreq dm_multipath video sbs
i2c_ec button battery asus_acpi ac parport_pc lp parport snd_intel8x0
snd_ac97_codec snd_ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event
snd_seq snd_seq_device floppy snd_pcm_oss snd_mixer_oss snd_pcm 8139cp
snd_timer 8139too mii snd soundcore snd_page_alloc i2c_i801 serio_raw
i2c_core pcspkr dm_snapshot dm_zero dm_mirror dm_mod ata_piix libata sd_mod
scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd
Sep 14 19:25:21 localhost kernel: CPU: 1
Sep 14 19:25:21 localhost kernel: EIP: 0060:[<c04e9568>] Not
tainted VLI
Sep 14 19:25:21 localhost kernel: EFLAGS: 00210286 (2.6.18-1.2798.fc6
#1)
Sep 14 19:25:21 localhost kernel: EIP is at list_del+0x48/0x6c
Sep 14 19:25:21 localhost kernel: eax: 00000048 ebx: dda0d5a0 ecx:
c067e1d0 edx: 00200082
Sep 14 19:25:21 localhost kernel: esi: efaf97f8 edi: efaf97e8 ebp:
4401d000 esp: eb1cfde8
Sep 14 19:25:21 localhost kernel: ds: 007b es: 007b ss: 0068
Sep 14 19:25:21 localhost kernel: Process httpd (pid: 13757,
ti=eb1cf000 task=f1cbd7b0 task.ti=eb1cf000)
Sep 14 19:25:21 localhost kernel: Stack: c0641c62 dda0d5a0 fda0d5a0
dda0d56c c0463d65 dda0d5c0 dda0d56c dda0d56c
Sep 14 19:25:21 localhost kernel: c045fc48 00000000 44000000
00000000 eb1cfe40 eb1cfe40 df4e4224 f7c9e2c0
Sep 14 19:25:21 localhost kernel: e41d6a80 c04609c8 00000000
eb1cfe3c 00000000 000012ff c1801b60 f7c9e2c0
Sep 14 19:25:21 localhost kernel: Call Trace:
Sep 14 19:25:21 localhost kernel: [<c0463d65>]
anon_vma_unlink+0x1e/0x3f
Sep 14 19:25:21 localhost kernel: [<c045fc48>] free_pgtables+0x53/0xa3
Sep 14 19:25:21 localhost kernel: [<c04609c8>] exit_mmap+0x94/0xf1
Sep 14 19:25:21 localhost kernel: [<c0422d2d>] mmput+0x34/0x7a
Sep 14 19:25:21 localhost kernel: [<c0478953>]
flush_old_exec+0x60d/0x857
Sep 14 19:25:21 localhost kernel: [<c0495e45>]
load_elf_binary+0x47b/0x1597
Sep 14 19:25:21 localhost kernel: [<c0477c39>]
search_binary_handler+0xa4/0x260
Sep 14 19:25:21 localhost kernel: [<c04794b7>] do_execve+0x158/0x1f5
Sep 14 19:25:21 localhost kernel: [<c0402260>] sys_execve+0x2f/0x4f
Sep 14 19:25:21 localhost kernel: [<c0404013>] syscall_call+0x7/0xb
Sep 14 19:25:21 localhost kernel: DWARF2 unwinder stuck at
syscall_call+0x7/0xb
Sep 14 19:25:21 localhost kernel: Leftover inexact backtrace:
Sep 14 19:25:21 localhost kernel: =======================
Sep 14 19:25:21 localhost kernel: Code: c0 e8 4b c2 f3 ff 0f 0b 41 00
51 1c 64 c0 8b 03 8b 40 04 39 d8 74 1c 89 5c 24 04 89 44 24 08 c7 04 24
62 1c 64 c0 e8 26 c2 f3 ff <0f> 0b 46 00 51 1c 64 c0 8b 13 8b 43 04 89
42 04 89 10 c7 43 04
Sep 14 19:25:21 localhost kernel: EIP: [<c04e9568>] list_del+0x48/0x6c
SS:ESP 0068:eb1cfde8

Можно попробовать следующее:
- погонять память memtest'ом и погреть процессор (все ядра сразу) cpuburn'ом например
- проверьте винт smart'ом - возможно проблемы на месте swap-раздела

Код:

smartctl -t long

- выключите CPU frequency scaling - он включен судя по модулю

Код:

acpi_cpufreq

и по

Код:

last sysfs file: /devices/system/cpu/cpu1/cpufreq/scaling_setspeed

- настройте lm_sensors и посмотрите на температуры и вольтажи. Если процессор intel - он обычно по дефолту ругается в dmesg о перегреве.
- обновите ядро через yum
- обновите систему через yum, если это возможно.