From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx148.postini.com [74.125.245.148]) by kanga.kvack.org (Postfix) with SMTP id 844926B0037 for ; Thu, 14 Mar 2013 16:32:47 -0400 (EDT) Date: Thu, 14 Mar 2013 16:32:46 -0400 (EDT) From: Alan Stern Subject: Re: [PATCH] USB: EHCI: fix for leaking isochronous data In-Reply-To: <51421B89.6020308@web.de> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Soeren Moch Cc: Arnd Bergmann , USB list , Jason Cooper , Andrew Lunn , Sebastian Hesselbarth , linux-mm@kvack.org, Kernel development list , linux-arm-kernel@lists.infradead.org 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. Alan Stern -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org