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    SubjectRe: [BUG] AS-ioscheduler: kernel panic at as_exit_queue
    On Thu, Jan 08 2009, ???? ?? wrote:
    > Hi Nick & Jens,
    > I met a Kernel Panic with AS, the panic pc is at as_exit_queue, and panic
    > when the function check whether the fifo_list[REQ_SYNC] and
    > fifo_list[REQ_ASYNC] are empty or not, it would Panic if the lists are not
    > empty.
    > The k-panic happened when I plugged out my Micro-SD memory card
    > from my phone, the log has been attached onto this mail.
    > I guess there may be some conflicts between AS and Hot-plug
    > mechanism, so I read the code of AS code by code to find anything
    > suspicious. I find that AS might does not consider that do any operations
    > to the fifo_lists when the device driver try to exit its elevator, so there
    > is possibility that when device try to exit, the fifo_lists are not empty,
    > and happen kernel panic, though the possibility is really really very
    > small:).
    > Unfortunately, I have met such k-panic more than two times, so I
    > think I should get your suggestions first, and then try to do some works
    > for this problem:) Look forward for your reply:)
    > My Linux version : 2.6.25

    Please try a newer version, I _think_ this was fixed in sd. CC'ing
    Pierre, just in case.

    Jens Axboe

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      Last update: 2009-01-09 09:09    [W:0.021 / U:2.192 seconds]
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