linux-kernel - Re: request_firmware API exhaust memory

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Message-ID: <x2qac3eb2511004280123gd6143cd3ge641825089865172@mail.gmail.com>
Date:	Wed, 28 Apr 2010 10:23:05 +0200
From:	Kay Sievers <kay.sievers@...y.org>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	dhowells@...hat.com, Tomas Winkler <tomasw@...il.com>,
	Greg KH <greg@...ah.com>,
	Johannes Berg <johannes@...solutions.net>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Emmanuel Grumbach <egrumbach@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: request_firmware API exhaust memory

On Tue, Apr 27, 2010 at 15:34, Kay Sievers <kay.sievers@...y.org> wrote:
> On Tue, Apr 27, 2010 at 14:43, David Woodhouse <dwmw2@...radead.org> wrote:
>> This untested patch attempts to put the page array into the 'struct
>> firmware' so that we can free it from release_firmware().
>
> Looks good. Seems to work without problems and without leaking memory.
>
> Misses only the member in the struct firmware though. :)

Thomas, any chance to test David's patch, if that solves the issues you've seen?

Just add the missing line:

--- a/include/linux/firmware.h
+++ b/include/linux/firmware.h
@@ -12,6 +12,7 @@
 struct firmware {
        size_t size;
        const u8 *data;
+       struct page **pages;
 };


Thanks,
Kay
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