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Subjectkernel BUG at /usr/src/linux-2.5.30/include/linux/dcache.h:261!

I get following BUG() while trying to "rmmod" qlogic driver on 2.5.30.
Is this a known problem ? Any ideas to fix it ?


kernel BUG at /usr/src/linux-2.5.30/include/linux/dcache.h:261!
invalid operand: 0000
CPU: 0
EIP: 0010:[<c0160d0f>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: 00000000 ebx: f67ff7c0 ecx: f67f44fc edx: c3c3d220
esi: f67f44fc edi: f67ff7c0 ebp: ffffffd9 esp: db46de90
ds: 0018 es: 0018 ss: 0018
Stack: f67f44a0 c0160d95 f67ff7c0 f67ff7e8 f67ff7c0 f67ff7e8 f8860700 c016157e
f69a7e80 f67ff7c0 f88607e0 f88607e0 0000000f c01948f5 f8860878 c03179a0
c031b508 f88607e0 c015fef5 f88607e0 f88607e0 c0309fec f88607e0 c0309ffc
Call Trace: [<c0160d95>] [<c016157e>] [<c01948f5>] [<c015fef5>] [<c020c52f>]
[<f89ac8a0>] [<c01e870a>] [<f899444a>] [<f89ac8a0>] [<c011859e>] [<c0117992>]
Code: 0f 0b 05 01 00 db 2a c0 f0 ff 03 f0 fe 0d 80 0e 38 c0 0f 88

>>EIP; c0160d0f <d_unhash+f/70> <=====
Trace; c0160d95 <driverfs_rmdir+25/90>
Trace; c016157e <driverfs_remove_dir+8e/b2>
Trace; c01948f5 <put_device+65/82>
Trace; c015fef5 <driverfs_remove_partitions+65/a0>
Trace; c020c52f <sd_detach+af/110>
Trace; f89ac8a0 <END_OF_CODE+385cf3c4/????>
Trace; c01e870a <scsi_unregister_host+21a/4e0>
Trace; f899444a <END_OF_CODE+385b6f6e/????>
Trace; f89ac8a0 <END_OF_CODE+385cf3c4/????>
Trace; c011859e <free_module+1e/d0>
Trace; c0117992 <sys_delete_module+122/250>
Trace; c0107173 <syscall_call+7/b>
Code; c0160d0f <d_unhash+f/70>
00000000 <_EIP>:
Code; c0160d0f <d_unhash+f/70> <=====
0: 0f 0b ud2a <=====
Code; c0160d11 <d_unhash+11/70>
2: 05 01 00 db 2a add $0x2adb0001,%eax
Code; c0160d16 <d_unhash+16/70>
7: c0 (bad)
Code; c0160d17 <d_unhash+17/70>
8: f0 ff 03 lock incl (%ebx)
Code; c0160d1a <d_unhash+1a/70>
b: f0 fe 0d 80 0e 38 c0 lock decb 0xc0380e80
Code; c0160d21 <d_unhash+21/70>
12: 0f 88 00 00 00 00 js 18 <_EIP+0x18> c0160d27 <d_unhash+27/70>

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