Re: BUG: [2.4.18+] IDE Race Condition

[Ross Biro]

The net effect of this race condition and the other one I spotted is 
that you may see some interesting messages in your log file and you can 
detect the race condition if you look for it hard enough.  I don't 
currently see any bad effects.

    Ross

Ross Biro wrote:

>
> There is at least one more IDE race condition in 2.4.18 and 
> 2.4.21-pre3. Basically the interrupt for the controller being serviced 
> is left on while setting up the next command.  I'm not sure how much 
> trouble it can cause but it does lead to some interesting stack traces.
>
> The condition
> if (masked_irq && hwif->irq != masked_irq)
> in ide_do_request should be replaced with
> if (!masked_irq || hwif->irq != masked_irq)
> in two places.
>