From: Petr Vandrovec <petr@vandrovec.name>
Date: Thu, 10 Nov 2016 21:57:14 +0000 (-0800)
Subject: Fix USB CB/CBI storage devices with CONFIG_VMAP_STACK=y
X-Git-Tag: v3.2.85~41
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=19b2b6a14c3321617628e6ae5903d6e521dd7ff2;p=pandora-kernel.git

Fix USB CB/CBI storage devices with CONFIG_VMAP_STACK=y

commit 2ce9d2272b98743b911196c49e7af5841381c206 upstream.

Some code (all error handling) submits CDBs that are allocated
on the stack.  This breaks with CB/CBI code that tries to create
URB directly from SCSI command buffer - which happens to be in
vmalloced memory with vmalloced kernel stacks.

Let's make copy of the command in usb_stor_CB_transport.

Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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