From: Alan Stern <stern@rowland.harvard.edu>
Date: Thu, 16 Apr 2009 19:37:28 +0000 (-0400)
Subject: USB: g_file_storage: fix use-after-free bug when closing files
X-Git-Tag: v2.6.30-rc4~54^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=82a10a81c853be3859b3d222db0f372ee8d2eaa2;p=pandora-kernel.git

USB: g_file_storage: fix use-after-free bug when closing files

This patch (as1231) fixes a use-after-free bug in g_file_storage.  A
device's name may not be available after the device is unregistered,
even if the device structure itself is still allocated.  Since
close_backing_file() prints a LUN's name for debugging, it shouldn't
be called after the LUN has been unregistered.

That whole area needed to be cleaned up; the backing files were
getting closed in a couple of different places.  The patch fixes
things so that they get closed in just one place, as part of the
unbind procedure, immediately before the LUN is unregistered.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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