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    SubjectRe: BUG? "Call fasync() functions without the BKL" is racy

    >> I wonder if we need FASYNC at all. This could be gotten implicitely by
    >> looking at the fasync_list
    > Only if socket.

    But the helpers used by the character drivers add it too I think.

    > Serioulsy, I think the best (partial, yes) fix for now is to restore
    > lock_kernel() in setfl() and change ioctl_fioxxx() accordingly.
    > At least this protect us from tty too.

    For 2.6.28 I agree.

    > Not that I think this is very good idea though ;)

    The lock bit sounds reasonable.


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