Slab corruption after unloading a module

[Zhiyi Huang]

Hi there, I am a bit timid to post a message to the list after reading the FAQ,
but I did get a problem. When reply, please cc to my email address.
My kernel info: Linux version 2.6.8 (root@zhiyi) (gcc version 3.3.5 (Debian
1:3.3.5-8)) #1
Everytime (except the first time) I unload my module (a ram device), I got the
following message. Please just indicate if it is a kernel bug or if there is any
fix patch. At the moment I have no clue. I used kmalloc and alloc_page to
allocate memory dynamically when the ram device grows. And I freed them
when the module is unloaded of course.

Hello world from Template Module
temp device MAJOR is 253
Good bye from Template Module: 618 pages
Hello world from Template Module
temp device MAJOR is 253
Good bye from Template Module: 618 pages
Slab corruption: start=c7c12d24, len=192
Redzone: 0x5a2cf071/0x5a2cf071.
Last user: [<c01ac52d>](load_elf_interp+0xdd/0x2d0)
070: 6b 6b 6b 6b 98 2d c1 c7 98 2d c1 c7 6b 6b 6b 6b
Prev obj: start=c7c12c58, len=192
Redzone: 0x5a2cf071/0x5a2cf071.
Last user: [<c01ac52d>](load_elf_interp+0xdd/0x2d0)
000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
Next obj: start=c7c12df0, len=192
Redzone: 0x5a2cf071/0x5a2cf071.
Last user: [<00000000>](0x0)
000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b


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