Patch "rapidio/tsi721: fix incorrect detection of address translation condition" has been added to the 4.7-stable tree

Patch "rapidio/tsi721: fix incorrect detection of address translation condition" has been added to the 4.7-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    rapidio/tsi721: fix incorrect detection of address translation condition

to the 4.7-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     rapidio-tsi721-fix-incorrect-detection-of-address-translation-condition.patch
and it can be found in the queue-4.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From b30069291dc7f9b9a073c33d619818fe4a8e50de Mon Sep 17 00:00:00 2001
From: Alexandre Bounine <alexandre.bounine@idt.com>
Date: Thu, 1 Sep 2016 16:15:18 -0700
Subject: rapidio/tsi721: fix incorrect detection of address translation condition

From: Alexandre Bounine <alexandre.bounine@idt.com>

commit b30069291dc7f9b9a073c33d619818fe4a8e50de upstream.

Fix incorrect condition to identify involvment of a address translation
mechanism.

This bug results in NULL pointer kernel crash dump in cases when mapping
of inbound RapidIO address range is requested within existing aprture.

Link: http://lkml.kernel.org/r/20160901173144.2983-1-alexandre.bounine@idt.com
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com>
Cc: Barry Wood <barry.wood@idt.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/rapidio/devices/tsi721.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/rapidio/devices/tsi721.c
+++ b/drivers/rapidio/devices/tsi721.c
@@ -1148,7 +1148,7 @@ static int tsi721_rio_map_inb_mem(struct
 		} else if (ibw_start < (ib_win->rstart + ib_win->size) &&
 			   (ibw_start + ibw_size) > ib_win->rstart) {
 			/* Return error if address translation involved */
-			if (direct && ib_win->xlat) {
+			if (!direct || ib_win->xlat) {
 				ret = -EFAULT;
 				break;
 			}


Patches currently in stable-queue which might be from alexandre.bounine@idt.com are

queue-4.7/rapidio-tsi721-fix-incorrect-detection-of-address-translation-condition.patch