Messages in this thread | | | Date | Thu, 14 Mar 2013 21:51:11 +0100 | From | Soeren Moch <> | Subject | Re: [PATCH] USB: EHCI: fix for leaking isochronous data |
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On 14.03.2013 21:32, Alan Stern wrote: > On Thu, 14 Mar 2013, Soeren Moch wrote: > >>>> I added a debug message to >>>> drivers/usb/host/ehci-sched.c:itd_urb_transaction() to log the >>>> allocation flags, see log below. >>> >>> But it looks like you didn't add a message to end_free_itds(), so we >>> don't know when the memory gets deallocated. And you didn't print out >>> the values of urb, num_itds, and i, or the value of itd (so we can >>> match up allocations against deallocations). >> >> OK, I will implement this more detailed logging. But with several >> allocations per second and runtime of several hours this will result in >> a very long logfile. > > If the memory really is being leaked here in some sort of systematic > way, we may be able to see it in your debugging output after a few > seconds. >
OK, here are the first seconds of the log. But the buffer exhaustion usually occurs after several hours of runtime...
Soeren Moch
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