[2.6.27.5] kernel panic (unable to handle paging request)

[Sascha Biberhofer]

When running 2.6.27.5 I'm experiencing kernel panics after some random
amount of time. I'm not quite sure what triggers them, the first time it
happened after 5 days uptime, the second time after 1 day, always doing
the same random stuff. I've copied the Oops message from screen by hand 
(at least the readable part of it):

  [<c03c7339>] schedule+0x149/0x270
  [<c02f8967>] sys_send+0x37/0x40
  [<c02f9aa8>] sys_socketcall+0x1d8/0x2c0
  [<c0221c60>] copy_to_user+0x30/0x60
  [<c0102f01>] sysenter_do_call+0x12/0x25

Code: 24 10 89 d6 89 5c 24 08 89 6c 24 14 89 c7 8b 4c 24 18 9c 5b fa 8b
90 80 00 00 00 8b a8 90 00 00 00 85 d2 74 35 8b 80 8c 00 00 00 <8b> 04
82 89 87 80 00 00 00 53 9d 31 c0 c1 ee 0f 85 d2 0f 95 c0

EIP: [<c015a6b4>] kmem_cache_alloc+0x34/0xa0 SS:ESP 0068:d7013a00
---[ end trace 629cc3bb84dd2447 ]---

Fixing recursive fault but reboot is needed!
BUG: unable to handle kernel paging request at ff9f9042
IP: [<c015b525>] __kmalloc_track_caller+0x45/0xf0
*pde=00000000
Oops: 0000 [#3]
Pid: 0, comm: swapper Tainted: G     D  (2.6.27.5 #0)
EIP: 0060:[<c015b525>] EFLAGS: 00010086 CPU: 0
EIP is at __kmalloc_track_caller+0x45/0xf0
EAX: 00000000 EBX: 00000286 ECX: 0000000b EDX: ff9f9042
ESI: 00000020 EDI: c0498fde EBP: 00000800 ESP: c04a1ea0
 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
Process swapper (pid: 0, ti=c04a0000 task=c0470300 task.ti=c04a0000)
Stack: 00000282 df8849c0 c02fed79 df89f3c0 00000680 00000020 c0498aa8
       c02fea05 00000000 8000061c df823360 df823360 0000003c c02fed79
       ffffffff c027204e 00000000 df9520f8 8000061c df8849c0 df823360
       0000003c c02731a3 d5c8df60

Call Trace:
  [<c02fed79>] dev_alloc_skb+0x19/0x30
  [<c02fea05>] __alloc_skb+0x55/0x120
  [<c02fed79>] dev_alloc_skb+0x19/0x30
  [<c027204e>] nv_alloc_rx+0x3e/0x170
  [<c02731a3>] nv_napi_poll+0x403/0x603
  [<c030596f>] net_rx_action+0x5f/0xf0
  [<c011fe22>] __do_softirq+0x42/0x90
  [<c011fe97>] do_doftirq+0x27/0x30
  [<c0120185>] irq_exit+0x45/0x60
  [<c010f0d0>] smp_apic_timer_interrupt+0x40/0x80
  [<c01038fc>] apic_timer_interrupt+0x28/0x30
  [<c0118f61>] finish_task_switch+0x21/0x70
  [<c03c7339>] schedule+0x149/0x270
  [<c0134f7d>] tick_nohz_restart_sched_tick+0xd/0x150
  [<c0101b27>] cpu_idle+0x67/0x70

Code: 89 4c 24 08 77 70 e8 f2 ff ff 89 c7 83 ff 10 76 34 9c 5b fa 8b 97
80 00 00 00 8b af 90 00 00 00 85 d2 74 8b 87 8c 00 00 00 <8b> 04 82 89
87 80 00 00 00 53 9d 31 c0 cd ee 0f 85 d2 0f 95 c0

EIP: [<c015b525>] __kmalloc_track_caller+0x45/0xf0 SS:ESP 0068:c04a1ea0
Kernel panic - not syncing: Fatal exception in interrupt.


It looks like many things are going wrong at once.
I'm now back running 2.6.27.4 which is and has been runing fine. 
The machine itself is an AMD Athlon XP 2000+ with an ASUS A7N8X (having
an nfroce2 chipset) with 512 MB RAM and some Geforce TI 4800 iirc. 
Any help with this issue is really appreciated. 

greetings
 Sascha Biberhofer

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