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Subject2.2.15 Oops question
Date
Hello Gurus,
I am stuck with the following problem and am hoping someone can give
me a pointer as to what may be going on here. I have a driver that talks to
ISA registers in the 0xCA2 - 0x0CAB range. Right now I have the driver do
nothing expect register as a char dev and probe the registers and then do
nothing (to reduce the problem spot). Even after I rmmod the driver I see
these Oops messages (for anything as simple as ls or cat
etc - anything accessing the file system). Initially I though it was because
I was leaving the /dev entry even after
I rmmod'ed the driver, but I have seen it even after removing the node. Is
this a known issue that was fixed in
a subsequent patch? Does leaving the /dev/ node entry after removing a
driver leave a dangling reference of some sort? Thanks for your help.

Aug 29 04:22:04 linwood46 kernel: Unable to handle kernel paging request at
virtual address 80c73464
Aug 29 04:22:04 linwood46 kernel: current->tss.cr3 = 0047c000, %cr3 =
0047c000
Aug 29 04:22:04 linwood46 kernel: *pde = 00000000
Aug 29 04:22:04 linwood46 kernel: Oops: 0000
Aug 29 04:22:04 linwood46 kernel: CPU: 0
Aug 29 04:22:04 linwood46 kernel: EIP: 0010:[find_inode+26/56]
Aug 29 04:22:04 linwood46 kernel: EFLAGS: 00010287
Aug 29 04:22:04 linwood46 kernel: eax: 80c733fc ebx: 0001a068 ecx:
c0230288 edx: 80c733fc
Aug 29 04:22:04 linwood46 kernel: esi: c7d7b600 edi: 0001a068 ebp:
c7d7b600 esp: c7ef7ee0
Aug 29 04:22:04 linwood46 kernel: ds: 0018 es: 0018 ss: 0018
Aug 29 04:22:04 linwood46 kernel: Process gawk (pid: 874, process nr: 67,
stackpage=c7ef7000)
Aug 29 04:22:04 linwood46 kernel: Stack: c0130965 c7d7b600 0001a068 c0230288
0001a068 c0aee740 c7f3c770 c7f3c7bc
Aug 29 04:22:04 linwood46 kernel: c013d36c c7d7b600 0001a068 c0aee740
c7f3c770 c7ef7f54 c3e51428 c012afb2
Aug 29 04:22:04 linwood46 kernel: c7f3c770 c0aee740 c7ef7f54 00000000
c0aa900a 00000001 c012b17a c08b11a0
Aug 29 04:22:04 linwood46 kernel: Call Trace: [iget+49/96]
[ext2_lookup+84/124] [real_lookup+74/112] [lookup_dentry+294/496]
[open_namei+102/848] [filp_open+68/240] [sys_open+54/148]
Aug 29 04:22:04 linwood46 kernel: [system_call+52/56]
Aug 29 04:22:04 linwood46 kernel: Code: 39 70 68 75 0d 39 58 18 75 08 ff 40
1c eb 0b 8d 76 00 8b 12

Mahendra

Mahendra Ramachandran
Intel MS: CO5-201 (503)677-6967


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