The patch titled
Subject: rapidio/tsi721: fix incorrect detection of address translation condition
has been added to the -mm tree. Its filename is
rapidio-tsi721-fix-incorrect-detection-of-address-translation-condition.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/rapidio-tsi721-fix-incorrect-detection-of-address-translation-condition.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/rapidio-tsi721-fix-incorrect-detection-of-address-translation-condition.patch
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------------------------------------------------------
From: Alexandre Bounine <alexandre.bounine@xxxxxxx>
Subject: rapidio/tsi721: fix incorrect detection of address translation condition
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@xxxxxxx
Signed-off-by: Alexandre Bounine <alexandre.bounine@xxxxxxx>
Cc: Matt Porter <mporter@xxxxxxxxxxxxxxxxxxx>
Cc: Andre van Herk <andre.van.herk@xxxxxxxxxxxxxxxxxxxxxxxxx>
Cc: Barry Wood <barry.wood@xxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> [4.6+]
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/rapidio/devices/tsi721.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/rapidio/devices/tsi721.c~rapidio-tsi721-fix-incorrect-detection-of-address-translation-condition drivers/rapidio/devices/tsi721.c
--- a/drivers/rapidio/devices/tsi721.c~rapidio-tsi721-fix-incorrect-detection-of-address-translation-condition
+++ a/drivers/rapidio/devices/tsi721.c
@@ -1161,7 +1161,7 @@ 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 -mm which might be from alexandre.bounine@xxxxxxx are
rapidio-documentation-mport_cdev-add-missing-parameter-description.patch
rapidio-tsi721-fix-incorrect-detection-of-address-translation-condition.patch
rapidio-rio_cm-use-memdup_user-instead-of-duplicating-code.patch
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