[PATCH] USB: EHCI: fix for leaking isochronous data
From: Soeren Moch <hidden>
Date: 2013-03-14 20:51:57
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On 14.03.2013 21:32, Alan Stern wrote:
On Thu, 14 Mar 2013, Soeren Moch wrote:quoted
quoted
quoted
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 -------------- next part -------------- A non-text attachment was scrubbed... Name: syslog.gz Type: application/x-gzip Size: 24383 bytes Desc: not available URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20130314/e5ab1a24/attachment-0001.bin>