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    SubjectRe: aio: compat_ioctl issue?
    Michael Tokarev <> writes:

    > Hello.
    > I just come across a situation (next in a long row :)
    > when on x86, 32bit userspace does not work with 64bit
    > kernel. This time this is about aio requests.
    > An application submits some aio job, and it is returned
    > immediately (from io_getevents()) with EINVAL error.
    > Here's what it does (it's a printf in the application -
    > actual arguments as passed to io_submit() and actual
    > result received in io_getevents()):
    > io_submit: lio_opcode=7 reqprio=0 iov=0x9cd7018{0xf5599000,4096}, niov=1, offset=0
    > io_getevents: expected 4096 got -22 (EINVAL)
    > Note that it is not io_submit() which fails (that one
    > returns success) but io_getevents(), so it has to be
    > down the pipeline somewhere.
    > Can someone comment this please? Somehow I was thinking this
    > codepath works as - I think anyway - I ran 32bit Oracle database
    > with aio support on 64bit kernel, but I may be mistaken.
    > Kernel is 2.6.33 from

    Can you post the program, please?


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