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    SubjectRe: Slab corruption after unloading a module
    Date
    > On Tue, 2006-04-18 at 10:08 +1200, zhiyi huang wrote:
    >>>
    >>>> There was no problem if I just load and unload the module. But if I
    >>>> write to the device using "ls > /dev/temp" and then unload the
    >>>> module, I would get slab corruption.
    >>>
    >>> you return different value as what has really been consumed:
    >>>
    >>>> if (*f_pos + count > MAX_DSIZE)
    >>>> count1 = MAX_DSIZE - *f_pos;
    >>>>
    >>>> if (copy_from_user (temp_dev->data+*f_pos, buf, count1)) {
    >
    > this is still buggy.. what if f_pos is huge???

    Well, if you look at my program, the complete code is like this:

    if (*f_pos > MAX_DSIZE)
    goto wrap_up;
    if (*f_pos + count > MAX_DSIZE)
    count1 = MAX_DSIZE - *f_pos;

    if (copy_from_user (temp_dev->data+*f_pos, buf, count1)) {

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