kmalloc returns same address

From: gopan (gop_kumar_at_hotmail.com)
Date: 12/17/04

  • Next message: Loic Domaigne: "ANN: DCE/RPC 1.1 for modern linux platforms!" 
    Date: 17 Dec 2004 03:51:52 -0800

    >2. The next time I run it, I get the same addr returned by kmalloc.

    >Dec 15 12:23:55 localhost kernel: Start of module
    >Dec 15 12:23:55 localhost kernel: memhead: f19ecdc0 << kmalloc for
    the
    >head

    >Dec 15 12:23:55 localhost kernel: MALLOC_DMA: ptr: f19ecdc0
    ^^^^^^^^^
    >kmalloc for the user requested space returns the same
    >addr as in the last line

               I believe you have some how corrupted the data structures
    maintained by the slab allocator when you loaded the module first
    time. I have seem similar stuff happening when we do a double free.

    Gop

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