Hi,
I'm having this error several times a month on a heavy loaded production NFS server with RAID0:
Unable to handle kernel NULL pointer dereference at virtual address 00000020
printing eip:
f884488e
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[raid0:__insmod_raid0_O/lib/modules/2.4.27-1-686/kernel/drivers/md+-235378/96] Not tainted
EFLAGS: 00010202
eax: f884d6a0 ebx: efd32600 ecx: 00000000 edx: 00000020
esi: efd32600 edi: c2825f5c ebp: 00001ee2 esp: c2825f1c
ds: 0018 es: 0018 ss: 0018
Process kswapd (pid: 4, stackpage=c2825000)
Stack: efd32600 efd32600 c0153734 efd32600 efd32608 c015379d efd32600 f421cc28
c0150018 c3581408 c35817c0 c35817c8 00000000 c0153a24 c2825f5c 00015d9c
efd32428 f50ebdc8 000001d0 0000003c 00000015 c025d478 c0153bb4 00015d9c
Call Trace: [clear_inode+196/224] [dispose_list+77/176] [__get_lease+488/608] [prune_icache+100/464] [shrink_icache_memory+36/64]
[try_to_free_pages_zone+143/256] [kswapd_balance_pgdat+102/176] [kswapd_balance+40/64] [kswapd+152/185] [_stext+0/64] [arch_kernel_thread+46/64]
[kswapd+0/185]
Code: ff 0a 0f 94 c0 84 c0 75 44 ba ff ff ff ff 89 93 8c 01 00 00
<5>__alloc_pages: 0-order allocation failed (gfp=0xf0/0)
I'm running 2.4.27 compiled with Debian Sid options from the
kernel-image-2.4.27-1-686 package.
Is this a bug in raid0.c ?
Is there a way to fix this?
Thanks.
--
Cyril Bouthors
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