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    SubjectRe: 2.1.94 still locks up hard after a few minutes
    Bevan Schroeder wrote:
    >
    > On Thu, 9 Apr 1998, Linus Torvalds wrote:
    >
    > > This bug is definitely due to the changes in device locking. The
    > > machine doesn't actually really die, and the system works fine
    > > _except_ that all IO to a certain controller will block forever

    > I just got a hard lockup in 2.1.94 under minimal load (just X) which
    > froze mouse, network, keyboard, etc... Nothing unusual going on at
    > the time... Only happened once so far.

    It's probably still the same problem. The problem is related to a lock
    contention on block devices. For SCSI drivers anyway, whether the scsi
    driver interrupt routine calls the scsi_done() function with interrupts
    enabled or disabled and whether the driver uses a global cli(); for locking
    in the queue routine will determine if the machine is dead, or just the disk
    subsystem is dead.

    --

    Doug Ledford <dledford@dialnet.net>
    Opinions expressed are my own, but
    they should be everybody's.

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