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Re: loop-AES: timer softirq blocked after USB disconnect?

Hi Markus,

markus reichelt wrote:
* Matthias Kaehlcke <mkaehlcke@xxxxxxx> wrote:

i totally agree that unplugging the device without unmounting it
previously isn't how things should be done and can have side
effects.  but is it really obvious that the timer softirq isn't
executed during ~250ms because an USB device is uncleanly
unplugged?

I've had my fair share of USB fun myself, yeah.

The problem is difficult to track, you are using an old kernel. If
it's possible to use a recent kernel, I'd try that first.

i tried it with 2.6.26.3 (have some prob with USB and 2.6.27) but with the same result :(

adding more traces i see that the softirq is raised by the timer ISR but not executed

Also, the USB setup: Is the stick connected directly or via hub? What
about scheduler? PREEMPT? I'm just taking a wild guess here.

it's connected directly. PREEMPT is enabled, i'll try what happens when disabling it

The USB mailing list at linux-usb@xxxxxxxxxxxxxxx might be a better
place to ask, people there have a deeper knowledge about things that
could cause your problem. Worth a try.

thanks for the pointer, i'll give it a try

thanks for you response! 
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